Route profile
PHL→JAX
Flight reliability, delays and best times to fly from Philadelphia to Jacksonville, 742 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 19% of comparable major US routes (4,598 compared)
Calculated from 4,846 flights. How this is calculated · What counts as on time
PHL → JAX arrives on time 75.9% of the time; the return trip, JAX → PHL, arrives on time 79.0% of the time, a 3.0-point gap between the two directions of the same city pair.
PHL → JAX spends 30.3 minutes on the ground on a 742-mile trip: 22.8 minutes from pushback to wheels-up at PHL and 7.5 minutes from touchdown to gate at JAX.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What stands out
This route has stayed remarkably steady year over year, a smaller swing than 97% of 5,368 comparable routes.
76.2% on time over the most recent 12 months (2025-08 to 2026-07), against 76.4% in the 12 months before (2024-08 to 2025-07), virtually unchanged.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Ranked against every other route with the same kind of figure and at least 5,368 in the comparison.
What sets this route apart
Where PHL to JAX differs most from similar routes by hour, weekday, month and airline, July 2023 – July 2026.
PHL to JAX struggles most at 5 AM: 80.2% of its flights scheduled then arrive on time, 12 points behind the 92.2% on routes of similar length at the same hour. Against all other routes the gap is 12 points.
PHL to JAX is at its best against routes of similar length for flights scheduled at 11 AM: 88.3% arrive on time, 6.5 points ahead of the 81.8% those routes manage at that hour. Against all other routes the gap is 7.3 points.
Saturday is the day PHL to JAX slips furthest against routes of similar length, 74.2% on time where they average 79.0%, 4.8 points lower. Against all other routes the gap is 4.9 points.
In August, PHL to JAX runs 7 points below routes of similar length, 69.1% on time to 76.1%. Against all other routes the gap is 7.4 points.
PSA Airlines does better on PHL to JAX than on its routes of similar length: 83.4% on time here, 76.4% there, 7 points apart. Against all other routes the gap is 7.7 points.
PHL to JAX against comparable routes
July 2023 – July 2026| Measure | This route | Compared with | Them | Gap | Flights behind it |
|---|---|---|---|---|---|
| Hour: 5 AM departures | 80.2% | routes of similar length | 92.2% | −12.0 pts | 131 here, 64,517 there |
| Hour: 11 AM departures | 88.3% | routes of similar length | 81.8% | +6.5 pts | 171 here, 132,301 there |
| Weekday: Saturday | 74.2% | routes of similar length | 79.0% | −4.8 pts | 648 here, 264,789 there |
| Month: August | 69.1% | routes of similar length | 76.1% | −7.0 pts | 391 here, 175,101 there |
| Airline: PSA Airlines | 83.4% | routes of similar length | 76.4% | +7.0 pts | 1,156 here, 21,717 there |
Each comparison pools the flights of other routes, with this route’s own left out. Similar length means within 15% of this route’s 742 miles, with at least 5 such routes. A bucket is set against the most comparable group that has enough flights: similar length, then the same origin (at least 3 routes), then all other routes. Hours, weekdays and months appear only where both sides have 120 completed flights, and airlines where both have 600. The gap must be at least 2 points and 2 standard errors, and only the largest gap each way is kept per measure. These are differences in the flights counted, not causes.
Why PHL → JAX flights are cancelled
July 2023 – July 2026
PHL → JAX cancelled 101 of 4,846 scheduled flights — about 1 in every 48. The reason filed most often was extreme weather, 77.2% of the cancellations coded on this route — about 1 in every 62 scheduled flights.
Share of cancellations
Of 101 cancelled departures carrying a reason code.
What each reason means
Conditions the carrier judged severe enough to stop the flight: a blizzard, a hurricane, a line of thunderstorms.
78 cancellations, 77.2% of the total.
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
21 cancellations, 20.8% of the total.
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
2 cancellations, 2.0% of the total.
A terminal evacuation, a security breach, screening equipment failure, or screening queues over 29 minutes.
0 cancellations, 0.0% of the total.
Reason codes are the operating airline’s own filing with US DOT, not an independent finding of fault. Ordinary bad weather is filed under air traffic, so weather’s full share is larger than its bar.
101 coded cancellations were recorded on PHL → JAX; the section appears from 50.
When it goes wrong
July 2023 – July 2026
62 min late
against a median of 7 min early
PHL → JAX has an average that understates its risk: a typical arrival is 7 min early, but the worst tenth are 69 minutes worse than that. If the trip has something unmissable at the end of it, the median is the wrong number to plan against.
Percentiles over 4,846 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at JAX after arriving from PHL.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 36% | Likely to miss |
| 45 min | 23% | High risk |
| 60 min | 17% | High risk |
| 90 min | 10% | Some risk |
| 120 min | 6.5% | Some risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 2.08% of the time and diverts 0.12% of the time, which a late arrival never shows up in.
Chance of missing is the share of 4,739 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 62 minutes late (90th-percentile gate arrival delay), over 4,846 operations.
Any other layover length: connection checker.
Best time to fly
PHL → JAX flights departing 9 AM–12 PM arrived on time 86.1% of the time, against 66.8% for 6–9 PM departures, a gap of 19.3 percentage points.
By departure window
By departure hour
- 12 AM to 4 AM: too few flights to score
- 5 AM: 80.2% on time from 131 flights
- 6 AM: 85.1% on time from 148 flights
- 7 AM: too few flights to score
- 8 AM: 86.6% on time from 523 flights
- 9 AM: 84.7% on time from 554 flights
- 10 AM: 87.4% on time from 271 flights
- 11 AM: 88.3% on time from 174 flights
- 12 PM: 78.0% on time from 182 flights
- 1 PM: 74.6% on time from 247 flights
- 2 PM: too few flights to score
- 3 PM: 76.2% on time from 396 flights
- 4 PM: 65.9% on time from 721 flights
- 5 PM: too few flights to score
- 6 PM: 65.2% on time from 560 flights
- 7 PM: 70.6% on time from 542 flights
- 8 PM: 59.6% on time from 153 flights
- 9 PM to 11 PM: too few flights to score
Departure windows with fewer than 120 flights are not scored.
Why PHL → JAX runs late
July 2023 – July 2026
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for PHL → JAX. Only delays of 15 minutes or more are attributed. What the five causes mean
Late-arriving aircraft is the largest cause on PHL → JAX, at 50.1%: flights here mostly leave late because the plane came in late, and the day shows it: 9 AM–12 PM departures arrived on time 86.1% of the time and 6–9 PM departures 66.8%.
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| American Airlines | 2,311 | 72.1% | 1.56% | -5 min | 11.9% |
| PSA Airlines | 1,190 | 83.4% | 2.61% | -10 min | 7.9% |
| Frontier Airlines | 1,157 | 74.5% | 2.68% | -7 min | 10.8% |
American Airlines flew 49.6% of the 4,658 flights listed. Frontier Airlines cancelled 2.68% of its flights here against 1.56% for American Airlines.
PSA Airlines arrived on time 11.3 percentage points more often than American Airlines on this route.
Weekly and seasonal patterns
By day of week
Wednesday is historically the most reliable day and Sunday the least, a gap of 7.7 percentage points.
By month
- Jan: 73.0%
- Feb: 82.3%
- Mar: 78.8%
- Apr: 81.2%
- May: 72.8%
- Jun: 73.0%
- Jul: 63.8%
- Aug: 69.1%
- Sep: 82.5%
- Oct: 81.8%
- Nov: 84.6%
- Dec: 73.6%
July is historically the weakest month and November the strongest, a spread of 20.8 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 63.6% from 121 flights
- August 2023: 77.8% from 122 flights
- September 2023: too few flights to score (118)
- October 2023: 83.3% from 122 flights
- November 2023: too few flights to score (116)
- December 2023: too few flights to score (118)
- January 2024: too few flights to score (111)
- February 2024: 90.2% from 122 flights
- March 2024: 74.3% from 154 flights
- April 2024: 81.2% from 139 flights
- May 2024: 63.6% from 143 flights
- June 2024: 77.1% from 135 flights
- July 2024: 63.1% from 126 flights
- August 2024: 59.2% from 135 flights
- September 2024: 86.3% from 140 flights
- October 2024: 89.7% from 150 flights
- November 2024: 95.4% from 130 flights
- December 2024: 78.2% from 133 flights
- January 2025: too few flights to score (104)
- February 2025: too few flights to score (113)
- March 2025: 80.0% from 126 flights
- April 2025: 79.8% from 165 flights
- May 2025: 71.6% from 145 flights
- June 2025: 63.3% from 151 flights
- July 2025: 65.6% from 143 flights
- August 2025: 70.8% from 145 flights
- September 2025: too few flights to score (117)
- October 2025: 71.6% from 135 flights
- November 2025: too few flights to score (112)
- December 2025: too few flights to score (119)
- January 2026: too few flights to score (116)
- February 2026: too few flights to score (102)
- March 2026: too few flights to score (115)
- April 2026: 83.1% from 137 flights
- May 2026: 82.7% from 151 flights
- June 2026: 78.6% from 162 flights
- July 2026: 62.8% from 153 flights
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 76.2% against 76.4% in the 12 months before — broadly unchanged.
Data and methodology
Calculated by FlyerIntel from 4,846 PHL → JAX flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed