SJU Airport: 76.2% on time, worst at 10 PM

SJU right now

Live conditions where a permitted source publishes them, and the historical record where none does.

No disruption reported

Aviation weather is not currently a factor.

Departures at this hour

88.6% leave on time

05:00–05:59 local · 4,909 departures on record

Typical taxi out15 min

Median arrival8 min early

Cancelled1.3%

When flights run late in this hour, most of the delay is attributed to the airline.

Historical pattern for SJU from US DOT BTS — not a live reading.

Aviation weatherVFR

79°F · wind 0 kt

Minimal operational impact. Conditions are not a notable factor for operations right now.

Updated 08:56 UTC

Forecast issued 05:40Z.

Updated 05:40 UTC

Aircraft seen now

On the field0

Airborne within 15 NM0

Departed in the last hour0

Arrived in the last hour0

Below 10,000 ft, so aircraft overflying at cruise are not counted. These are observations, not an operational status: a count is a floor, since receiver coverage varies and a movement between two samples can be missed.

Updated 08:59 UTC

Aircraft observations from ADSB.lol (opens in a new tab) (Katia Esposito and contributing feeders), under the ODbL 1.0 (opens in a new tab). Derived data.

FlyerIntel shows live values only where a permitted source provides them. Sections without data are left empty rather than estimated.

Airport reliability

Departures from SJU, July 2023 – July 2026.

Airport Reliability Score

58/ 100Fair

Better than 18% of major US airports covered by FlyerIntel (64 compared)

Calculated from 109,598 flights. How this is calculated

Departures arriving on time

76.2%

81,921 of 107,563 completed

Cancellation rate

1.39%

1,523 cancelled

Median arrival delay

-5 min

Average 11.2 min

Severe delays

8.8%

Arrived 60+ minutes late

Delay when late

81 min

Average, when 15+ min late

Departures analyzed

109,598

109,607 arrivals

Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026

What stands out

How this airport compares to others like it, not just to itself.

Weather is still the leading cause at this airport, but a smaller share of it than 96% of 61 comparable airports; cancellations here spread across causes more evenly.

Weather accounts for 45.0% of coded cancellations at this airport, against 59.9% across every covered airport.

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Ranked against every other airport with the same kind of figure and at least 61 in the comparison.

Why flights are cancelled at SJU

Every cancellation carries a reason code filed by the airline that operated the flight. Departures, July 2023 – July 2026.

Extreme weather accounts for 43.5% of cancelled departures from SJU — about 1 in every 165 scheduled departures. That is 16 points lower than the 59.5% recorded across every airport FlyerIntel covers.

Share of cancellations

Weather43.5%

Airline37.4%

Air traffic17.8%

Security1.2%

Of 1,523 cancelled departures carrying a reason code.

What each reason means

Extreme weather1 in 165

Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.

663 cancellations, 43.5% of the total.

The airline1 in 192

Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.

570 cancellations, 37.4% of the total.

The air traffic system1 in 404

Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.

271 cancellations, 17.8% of the total.

Security1 in 5,768

A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.

19 cancellations, 1.2% of the total.

1,523 of 109,598 scheduled departures from SJU were cancelled. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.

Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026 · Reason codes are each airline’s own filing, not an independent finding of fault. Shown for airports with at least 500 coded cancellations; 1,523 were recorded at SJU.

Why flights run late at SJU

Where US DOT attributed the delay minutes on departures from SJU.

Late-arriving aircraft47.8%

the inbound aircraft was late, so this flight started late

The airline36.5%

crew, maintenance, boarding and fueling, all within the carrier’s control

Air traffic control14.3%

airspace and airport capacity, including weather-driven flow control

Weather1.3%

weather severe enough to stop this flight specifically

Security0.1%

screening or terminal security incidents

Share of the delay minutes US DOT attributed to each cause for departures from SJU. Only delays of 15 minutes or more are attributed.

Of the 23,402 departures from SJU that left 15 or more minutes late and have a known inbound aircraft, 68% followed a flight that landed 15 or more minutes late. The other 32% left late even though the aircraft had come in on time or early. Across the 64 covered airports that share runs from 47% to 73%, with a median of 62%; SJU’s is the 8th highest.

The late flight is the one the same aircraft flew into SJU just before, found from the tail number in the DOT file. Airlines and hours differ from one airport to the next, so this describes the departures from SJU and does not rate the airport.

An airport is only partly the author of its own delays. Late-arriving aircraft describes the national schedule arriving here more than anything about this airfield. Air traffic control covers airspace and airport capacity, which is where a congested airport shows up; only the airline category sits squarely inside the carriers’ own operation. How differently they run it is further down this page.

Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026

What weather costs at SJU

Departures from SJU by the weather at the airport in the hour they were scheduled to leave, July 2023 – July 2026.

2.2% of scheduled departures from SJU left in an hour of bad weather. 1.5% of them were cancelled, against 1.4% in normal conditions, and 69.5% of the ones that flew arrived on time, against 76.4%. Those hours held 2% of all cancelled departures.

Cancellations were highest in heavy rain hours: 2.7% of 596 departures.

Airlines filed 44% of SJU’s coded cancellations under extreme weather. By the weather at the airport in the scheduled hour, 2% of cancelled departures were in bad-weather hours. A code is the airline’s stated reason and an hour’s weather is what the airport reported, so the two need not match.

By weather

Scheduled departures, July 2023 – July 2026

Cancellation and on-time rates at SJU by the weather at the airport in the scheduled departure hour
Weather at the airport	Departures	Cancelled	Left on time	Arrived on time	Avg. departure delay
Normal conditionsVFR with no thunderstorm, snow or ice, fog, heavy rain or high wind	103,68096.2% of all	1.4%	76.1%	76.4%	17.1 min
Any bad weatherIFR or LIFR, or a thunderstorm, snow or ice, fog, heavy rain or high wind	2,3332.2% of all	1.5%	71.0%	69.5%6.9 points below normal	22.6 min
MVFRceiling 1,000 to 3,000 feet or visibility 3 to 5 miles	2,0421.9% of all	1.5%	73.8%	71.8%4.6 points below normal	19.9 min
IFRceiling 500 to 999 feet or visibility 1 to under 3 miles	1,0281.0% of all	1.1%	71.8%	68.5%7.9 points below normal	22.0 min
Thunderstorma thunderstorm reported at the airport	1,2091.1% of all	1.0%	65.1%	65.3%11.1 points below normal	26.9 min
Heavy rainheavy rain reported at the airport	5960.6% of all	2.7%1.9 times normal	74.4%	69.5%6.9 points below normal	22.6 min
High windwind of 25 knots or more, or gusts of 30 knots or more	2270.2% of all	2.6%1.9 times normal	69.5%	66.1%10.3 points below normal	22.0 min
Low visibilityvisibility under 3 miles	1,0641.0% of all	1.0%	71.8%	68.0%8.4 points below normal	22.2 min

A departure is counted in every row its hour fits, so the rows overlap and do not add up. Left on time is a departure under 15 minutes late, and arrived on time an arrival under 15 minutes late; cancelled is the share of scheduled departures. Rows with fewer than 120 departures are not scored. Too few departures to score: LIFR (49), fog (15), low ceiling (41).

This is the weather reported at SJU in the hour a flight was scheduled to leave. It leaves out the weather at the destination and on the way, weather that arrived after the scheduled time, and anything else that goes wrong in a bad hour. An hour takes the worst conditions any report in it gave. Weather was matched to 98.4% of the airport’s scheduled departures; the rest left in hours with no report, or at a scheduled time the flight records cannot place exactly. Bad-weather hours are compared with normal hours at the same airport, not with what the same flights would have done in a clear sky: they also fall more often in some seasons and at some times of day.

Source: FlyerIntel analysis of US DOT BTS flight records and Iowa Environmental Mesonet weather reports · July 2023 – July 2026 · Where the weather comes from, and its limits. All covered airports side by side: What Weather Costs Each Airport.

Turning aircraft around at SJU

Time on the ground between one flight and the next of the same aircraft at SJU, and what a late arrival does to the next departure, July 2023 – July 2026.

The median turn at SJU is scheduled for 65 minutes on the ground and takes 70 minutes, against 56 minutes and 63 minutes across all airports. Aircraft are given longer on the ground here than at the typical airport. The typical turn runs 5 minutes over its schedule, closer to it than the 7 minutes across all airports. 25.8% of turns here began with an aircraft that landed 15 or more minutes late, above the 18.9% for all airports.

When the aircraft landed 15 or more minutes late (21,309 turns here, 62 minutes late on average), 65% of the turns were finished in no more than the scheduled ground time, against 68% across all airports. 71% of those flights left 15 or more minutes late, against 72%. After an aircraft that landed on time, 11% did (all airports 11%).

Given the turn lengths scheduled here, the network’s rates would give 75% finished in the schedule and 64% leaving late. SJU does worse on both counts: fewer late turns are finished in the schedule and more late aircraft become late departures, so a late arrival is more likely to stay late here than the schedule alone explains. 39% of its late-inbound turns had a scheduled turn of 60 to 89 minutes, against 29% across all airports.

Turns at SJU against all airports

82,609 turns, July 2023 – July 2026

Aircraft turns at SJU against all airports: scheduled and actual time on the ground and what a late inbound aircraft does
Measure	SJU	All airports	All airports, same turn lengths
Median scheduled turn	65 min	56 min	—
Median actual turn	70 min	63 min	—
Turns that began with an aircraft 15+ minutes late	26%	19%	—
Late turns finished within the schedule	65%	68%	75%
Late inbound that left 15+ minutes late	71%	72%	64%
On-time inbound that left 15+ minutes late	11%	11%	—

The last column is the network’s rate at the turn lengths scheduled at SJU, band by band from under 30 minutes to 3 to 6 hours. A turn finishes within the schedule when the aircraft spent no more time on the ground than the schedule gave it.

A turn pairs an aircraft’s landing at SJU with its next departure from it by tail number; the aircraft is never named. These 82,609 turns are 75% of the flights that left SJU in the period; the rest are an aircraft’s first flight after a long stay, flights without a usable inbound, and cancelled flights. Ground time runs from the gate. Turns under 30 minutes are kept, but most leave late even after an on-time landing. Airlines set their own turn schedules, so this describes the airlines that fly at SJU and does not rate the airport.

Source: FlyerIntel analysis of US DOT BTS flight records · July 2023 – July 2026 · Airports side by side: Where a Late Aircraft Gets Its Time Back.

What sets SJU apart

Where SJU’s hours, months, airlines and taxi time differ most from the other airports, July 2023 – July 2026.

Flights scheduled to leave SJU at 7 AM arrive on time 90.4% of the time, 2.6 points better than the 87.8% for that hour at the other airports.

12 AM is where SJU falls furthest behind the rest: 65.9% of its 12 AM departures arrive on time, 16 points below the 81.9% for that hour elsewhere.

June treats SJU better than it treats the rest of the country: 78.4% on time against 72.9% elsewhere, 5.5 points ahead.

August is SJU’s hardest month against the field, 68.7% on time to 76.8% elsewhere, 8.1 points short.

Delta Air Lines does better out of SJU than anywhere else it flies: 86.7% on time here, 82.0% on its other departures, 4.7 points apart.

Frontier Airlines’ departures from SJU arrive on time 68.7% of the time, 3.1 points worse than the 71.8% the same airline manages at its other airports.

Taxi-out at SJU averages 15.7 minutes, 3.0 minutes less than the 18.7 minutes elsewhere.

SJU against the other airports

July 2023 – July 2026

Where SJU differs most from the other covered airports, with the flights behind each figure
Measure	SJU	Elsewhere	Gap	Flights behind it
Hour: 7 AM departures	90.4%	87.8%	+2.6 pts	7,822 here, 1,209,801 elsewhere
Hour: 12 AM departures	65.9%	81.9%	−16.0 pts	1,024 here, 32,254 elsewhere
Month: June	78.4%	72.9%	+5.5 pts	9,528 here, 1,462,349 elsewhere
Month: August	68.7%	76.8%	−8.1 pts	8,850 here, 1,464,985 elsewhere
Airline: Delta Air Lines	86.7%	82.0%	+4.7 pts	10,991 here, 3,091,134 elsewhere
Airline: Frontier Airlines	68.7%	71.8%	−3.1 pts	16,322 here, 598,639 elsewhere
Taxi-out: Departures	15.7 min	18.7 min	−3.0 min	108,118 here, 17,521,991 elsewhere

"Elsewhere" is every other covered airport together, taken from the same aggregates as this page with SJU’s own flights removed (for airlines, that airline’s flights from all its other airports). Hours, months and airlines appear only where both sides have at least 120 completed flights (airlines 500) and the gap is at least 2 points and 2 standard errors; only the largest gap in each direction is shown. The taxi figure is weighted by departures and has no error estimate, so it appears from 2 minutes.

Best time to fly from SJU

On-time arrival rate by scheduled local departure time: each weekday and hour, and averaged over the week.

Flights departing 5–9 AM arrived on time 88.1% of the time, against 68.1% for 3–6 PM departures — a gap of 20.0 percentage points.

By day and hour

On-time arrival rate for each weekday and scheduled departure hour, in local time.

Wednesday 7–8 AM was the most reliable slot at SJU (91.6% on time, 1,083 flights) and Sunday 7–8 PM the least (61.6%, 621 flights).

Hour of departure matters more than day of the week: hourly averages sit a typical 8.2 points from the airport-wide rate, weekday averages 1.5 points.

On-time arrival rate at SJU by weekday and scheduled departure hour, local time. Each button reads out one slot.
Hour	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
12 AM–1 AM
1 AM–2 AM
2 AM–3 AM
3 AM–4 AM
4 AM–5 AM
5 AM–6 AM
6 AM–7 AM
7 AM–8 AM
8 AM–9 AM
9 AM–10 AM
10 AM–11 AM
11 AM–12 PM
12 PM–1 PM
1 PM–2 PM
2 PM–3 PM
3 PM–4 PM
4 PM–5 PM
5 PM–6 PM
6 PM–7 PM
7 PM–8 PM
8 PM–9 PM
9 PM–10 PM
10 PM–11 PM

On-time rate, % · stronger color, fewer on time

50–59
60–69
70–79
80–89
90–99

Fewer than 120 flights, not scored
Most reliable slot
Least reliable slot

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · On time is arrival within 15 minutes of schedule. Cells round to whole percentages; the table shows one decimal.

Best and worst slots are named only among slots with 500+ flights, and only when the gap is larger than sampling error. Departures after 11 PM (261 flights) are not drawn: no slot in those hours has enough flights to score.

View as tableHide table

On-time arrival rate (%) with flights beneath, by scheduled departure hour and weekday at SJU. A dash means fewer than 120 flights, which are not scored.
Hour	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday	Sunday
12 AM–1 AM	57.4% on time160 flights	68.2% on time158 flights	63.4% on time138 flights	72.2% on time145 flights	65.5% on time150 flights	66.4% on time153 flights	68.5% on time149 flights
1 AM–2 AM	72.9% on time283 flights	69.7% on time261 flights	73.7% on time270 flights	75.5% on time264 flights	71.4% on time274 flights	71.6% on time287 flights	75.8% on time274 flights
2 AM–3 AM	75.9% on time229 flights	78.4% on time201 flights	84.1% on time202 flights	86.4% on time219 flights	74.4% on time249 flights	83.6% on time218 flights	80.1% on time232 flights
3 AM–4 AM	78.4% on time276 flights	71.5% on time266 flights	81.9% on time213 flights	86.2% on time230 flights	78.9% on time258 flights	81.7% on time267 flights	79.8% on time252 flights
4 AM–5 AM	75.6% on time127 flights	88.9% on time120 flights	107 flights, too few to score	88.1% on time120 flights	111 flights, too few to score	83.2% on time133 flights	78.0% on time123 flights
5 AM–6 AM	85.8% on time729 flights	86.5% on time622 flights	89.2% on time607 flights	87.8% on time719 flights	86.5% on time743 flights	89.3% on time726 flights	87.1% on time763 flights
6 AM–7 AM	86.0% on time1,403 flights	86.5% on time1,171 flights	85.6% on time1,150 flights	87.7% on time1,312 flights	87.9% on time1,383 flights	87.0% on time1,286 flights	86.7% on time1,368 flights
7 AM–8 AM	89.6% on time1,163 flights	89.2% on time1,099 flights	91.6% on time1,083 flights	91.0% on time1,135 flights	91.1% on time1,133 flights	90.3% on time1,105 flights	90.1% on time1,223 flights
8 AM–9 AM	86.2% on time545 flights	86.8% on time556 flights	89.8% on time546 flights	88.1% on time500 flights	87.7% on time530 flights	89.3% on time622 flights	85.1% on time512 flights
9 AM–10 AM	84.4% on time305 flights	86.8% on time316 flights	82.8% on time319 flights	82.6% on time313 flights	85.2% on time294 flights	85.2% on time343 flights	87.0% on time406 flights
10 AM–11 AM	81.3% on time560 flights	84.0% on time429 flights	82.3% on time424 flights	80.5% on time511 flights	84.0% on time520 flights	81.3% on time551 flights	83.2% on time518 flights
11 AM–12 PM	81.5% on time622 flights	76.3% on time520 flights	81.5% on time528 flights	78.9% on time610 flights	79.4% on time626 flights	80.9% on time589 flights	80.6% on time640 flights
12 PM–1 PM	78.4% on time726 flights	80.0% on time681 flights	81.0% on time708 flights	80.1% on time731 flights	76.2% on time766 flights	78.9% on time850 flights	75.5% on time720 flights
1 PM–2 PM	75.8% on time1,168 flights	77.0% on time1,164 flights	76.2% on time1,146 flights	73.6% on time1,165 flights	77.4% on time1,174 flights	74.7% on time1,288 flights	75.4% on time1,199 flights
2 PM–3 PM	75.0% on time1,274 flights	76.2% on time1,208 flights	76.6% on time1,180 flights	74.7% on time1,253 flights	75.7% on time1,261 flights	70.5% on time1,424 flights	72.7% on time1,289 flights
3 PM–4 PM	69.0% on time1,273 flights	73.6% on time1,280 flights	71.8% on time1,245 flights	67.4% on time1,303 flights	71.9% on time1,267 flights	62.6% on time1,513 flights	65.6% on time1,340 flights
4 PM–5 PM	65.4% on time1,163 flights	69.7% on time1,011 flights	74.9% on time1,033 flights	65.6% on time1,180 flights	68.7% on time1,195 flights	62.5% on time1,346 flights	64.9% on time1,186 flights
5 PM–6 PM	69.0% on time1,027 flights	71.3% on time872 flights	75.9% on time879 flights	65.3% on time1,013 flights	70.4% on time1,028 flights	65.1% on time1,112 flights	64.1% on time1,134 flights
6 PM–7 PM	68.9% on time913 flights	73.1% on time834 flights	74.0% on time886 flights	70.9% on time836 flights	73.1% on time942 flights	64.8% on time1,040 flights	68.2% on time862 flights
7 PM–8 PM	67.4% on time644 flights	72.9% on time583 flights	75.6% on time584 flights	70.6% on time644 flights	69.0% on time680 flights	65.3% on time680 flights	61.6% on time621 flights
8 PM–9 PM	62.2% on time665 flights	73.4% on time557 flights	69.0% on time569 flights	67.1% on time669 flights	66.6% on time645 flights	65.9% on time626 flights	63.4% on time675 flights
9 PM–10 PM	65.6% on time489 flights	70.2% on time362 flights	68.7% on time363 flights	65.7% on time470 flights	65.1% on time509 flights	66.4% on time461 flights	63.2% on time525 flights
10 PM–11 PM	62.7% on time233 flights	61.5% on time138 flights	63.2% on time160 flights	67.5% on time211 flights	64.4% on time244 flights	65.7% on time189 flights	57.1% on time256 flights

By departure window

All days combined

5–9 AM88.1%

9 AM–12 PM81.9%

12–3 PM75.9%

3–6 PM68.1%

6–9 PM68.8%

9 PM–5 AM71.9%

By departure hour

All days combined

12 AM

3 AM

6 AM

9 AM

12 PM

3 PM

6 PM

9 PM

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Buckets with fewer than 120 flights are not scored.

International arrivals

How long passport control normally takes here, hour by hour and hall by hall. This is the arrivals queue, not departure security — and it is history, not a live wait.

At San Juan AA, SJU’s busiest hall, both passport queues run much the same: a typical 12 min on a US passport and 13 min on any other, rising to 27 min on a busy day. Where the two halls agree like this, CBP’s combined figure of 13 min is a fair summary of both — which is not true everywhere, and is why they are shown apart.

Terminal by terminal, across the day

Terminal by terminal, across the day
Terminal	US passports	US busy day	Other passports	Other busy day	Global Entry
San Juan AA	12 min	25 min	13 min	27 min	10.6% of arrivals

US passports — San Juan AA

12 AM

3 AM

6 AM

9 AM

12 PM

3 PM

6 PM

9 PM

US citizens and lawful permanent residents, who use the US-passport lanes.

All other passports — San Juan AA

12 AM

3 AM

6 AM

9 AM

12 PM

3 PM

6 PM

9 PM

Every other arriving passenger, including visa and visa-waiver travelers.

Hour by hour — San Juan AA

Hour by hour — San Juan AA
Cleared in hour	US passports	US busy day	Other passports	Other busy day	Booths open
8 AM–9 AM	4 min	14 min	2 min	15 min	2
9 AM–10 AM	6 min	14 min	6 min	15 min	3
10 AM–11 AM	6 min	17 min	4 min	14 min	3
11 AM–12 PM	10 min	23 min	14 min	29 min	4
12 PM–1 PM	9 min	21 min	10 min	24 min	4
1 PM–2 PM	9 min	21 min	12 min	27 min	5
2 PM–3 PM	12 min	22 min	11 min	21 min	6
3 PM–4 PM	17 min	27 min	17 min	28 min	6
4 PM–5 PM	17 min	28 min	19 min	33 min	6
5 PM–6 PM	14 min	26 min	16 min	30 min	5
6 PM–7 PM	20 min	31 min	17 min	30 min	5
7 PM–8 PM	18 min	31 min	18 min	32 min	6
8 PM–9 PM	17 min	28 min	16 min	31 min	6
9 PM–10 PM	10 min	22 min	8 min	25 min	5
10 PM–11 PM	16 min	25 min	16 min	25 min	6

US passports: clearing in the 6 PM–7 PM hour typically takes 20 min, against 4 min in the 8 AM–9 AM hour — 16 min between the slowest and fastest of 15 measured hours.

All other passports: clearing in the 4 PM–5 PM hour typically takes 19 min, against 2 min in the 8 AM–9 AM hour — 17 min between the slowest and fastest of 15 measured hours.

The hour is when CBP processed the passenger, not when the aircraft landed — allow for the walk from the gate. Hours with fewer than 120 days of records are not listed rather than shown as an estimate, which is why a terminal’s quietest hours are usually absent. “Busy day” is the 90th percentile: one arrival in ten is worse than that. Booths are how many CBP had open, and they follow the queue rather than prevent it — the busiest hours are staffed hardest and are still the slowest.

Source: US Customs and Border Protection · 2024-08-28 to 2026-10-16 · These are CBP passport control waits for arriving international passengers — a different queue from TSA departure screening. CBP publishes them about two days in arrears, so every figure here describes what has been typical over 2024-08-28 to 2026-10-16, and none of it is a live queue or a forecast for your flight. US and non-US passengers are reported separately by CBP and are kept separate here, because they are separate halls. FlyerIntel publishes a terminal or an hour only where CBP filed at least 120 hourly records for it, and an hour-by-hour breakdown only where at least 6 hours clear that floor.

What to expect at SJU

How busy the airport is through the day, from scheduled departure volume.

Departures a day

97

Average across the analysis period

Busiest hour

3 PM

About 8 departures

Typical taxi-out

15.7 min

Pushback to wheels-up, on departure

Typical taxi-in

6.2 min

Touchdown to gate, on arrival

Scheduled departures by hour

12 AM

3 AM

6 AM

9 AM

12 PM

3 PM

6 PM

9 PM

The busiest hour is 3 PM, with about 8 departures a day, against roughly 2 at 9 AM.

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Taxi-out runs from gate to wheels-up, averaged over departures and weighted by hour. Taxi-in runs from touchdown to gate.

Weekly and seasonal patterns

By day of week

Mon75.4%

Tue77.8%

Wed78.8%

Thu76.2%

Fri76.9%

Sat74.2%

Sun74.5%

Wednesday is historically the most reliable day and Saturday the least, a gap of 4.6 percentage points.

By month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

August is historically the weakest month and November the strongest, a spread of 13.0 percentage points.

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026

Airlines at SJU

Departure performance by operating carrier. Regional flights are reported by the carrier that operated them, not by the mainline brand.

Airlines at SJU
Carrier	Departures	On time	Cancelled	Median delay
JetBlue B6	33,607	73.3%	1.52%	-5 min
Frontier Airlines F9	16,732	68.7%	2.16%	-2 min
American Airlines AA	13,499	77.2%	0.79%	-6 min
Spirit Airlines NK	12,230	75.0%	2.12%	-6 min
Southwest Airlines WN	12,160	80.4%	0.57%	-2 min
Delta Air Lines DL	11,146	86.7%	0.83%	-10 min
United Airlines UA	10,199	81.2%	1.22%	-8 min

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Carriers with fewer than 500 departures are not listed.

Routes from SJU

Ranked by FlyerIntel Route Reliability Score.

Most reliable

MCOOrlando60 JFKNew York59

Least reliable

JFKNew York59 MCOOrlando60

Busiest routes

Busiest routes from SJU
Destination	Flights	On time	Score
SJU → MCO Orlando	19,399	77.0%	60
SJU → JFK New York	11,345	79.0%	59

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Only routes with at least 10,000 flights are ranked.

See all 4 routes to and from SJU →

Reliability over time

On-time arrival rate for departures, by month.

24

25

26

Over the most recent 12 months (2025-08 to 2026-07), departures from SJU arrived on time 77.4% of the time, against 79.0% in the 12 months before — declining by 1.6 percentage points.

Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026

Data and sources

Historical statistics

Every historical figure on this page is calculated by FlyerIntel from US DOT Bureau of Transportation Statistics on-time performance records covering July 2023 – July 2026, comprising 109,598 departures from SJU. A flight counts as delayed when it arrives 15 or more minutes after schedule.

Full methodology · All data sources

Analysis last recomputed September 26, 2026

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Luis Muñoz Marín International Airport on-time performance, from FlyerIntel

Updates on its own as new data comes in — paste this once, nothing to maintain.

<a href="https://flyerintel.com/airports/sju/"><img src="https://flyerintel.com/badge/airport/sju/" alt="Luis Muñoz Marín International Airport on-time performance, from FlyerIntel"></a>

Live conditions

Aviation weather comes from the NOAA Aviation Weather Center. Operational events come from the FAA where available. FlyerIntel shows the age of every live value and does not display data it cannot currently retrieve.

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Latest observation for SJU: METAR TJSJ 180856Z 00000KT 10SM FEW032 26/24 A2995 RMK AO2 SLP141 T02610239 53002 $ (issued 08:56 UTC).