Route profile
JAX→PHL
Flight reliability, delays and best times to fly from Jacksonville to Philadelphia, 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 22% of comparable major US routes (4,598 compared)
Calculated from 4,846 flights. How this is calculated
JAX → PHL arrives on time 79.0% of the time; the return trip, PHL → JAX, arrives on time 75.9% of the time, a 3.0-point gap between the two directions of the same city pair.
JAX → PHL spends 23.5 minutes on the ground on a 742-mile trip: 14.6 minutes from pushback to wheels-up at JAX and 8.9 minutes from touchdown to gate at PHL.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What sets this route apart
Where JAX to PHL differs most from similar routes by hour, weekday, month and airline, July 2023 – July 2026.
JAX to PHL struggles most at 3 PM: 59.0% of its flights scheduled then arrive on time, 13.7 points behind the 72.7% on routes of similar length at the same hour. Against all other routes the gap is 13.7 points.
JAX to PHL is at its best against routes of similar length for flights scheduled at 6 PM: 77.0% arrive on time, 9.2 points ahead of the 67.8% those routes manage at that hour. Against all other routes the gap is 8.4 points.
March is kinder to JAX to PHL than to routes of similar length: 83.2% on time against 78.2%, 5 points better. Against all other routes the gap is 5.3 points.
American Airlines does better on JAX to PHL than on its routes of similar length: 78.8% on time here, 73.9% there, 4.9 points apart. Against all other routes the gap is 3.7 points.
JAX to PHL against comparable routes
July 2023 – July 2026| Measure | This route | Compared with | Them | Gap | Flights behind it |
|---|---|---|---|---|---|
| Hour: 3 PM departures | 59.0% | routes of similar length | 72.7% | −13.7 pts | 144 here, 120,179 there |
| Hour: 6 PM departures | 77.0% | routes of similar length | 67.8% | +9.2 pts | 252 here, 141,201 there |
| Month: March | 83.2% | routes of similar length | 78.2% | +5.0 pts | 387 here, 172,975 there |
| Airline: American Airlines | 78.8% | routes of similar length | 73.9% | +4.9 pts | 2,278 here, 329,771 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 JAX → PHL flights are cancelled
July 2023 – July 2026
JAX → PHL cancelled 114 of 4,846 scheduled flights — about 1 in every 43. The reason filed most often was extreme weather, 77.2% of the cancellations coded on this route — about 1 in every 55 scheduled flights.
Share of cancellations
Of 114 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.
88 cancellations, 77.2% of the total.
Crew, maintenance, aircraft cleaning, baggage or fueling: what BTS counts as within the carrier’s own control.
22 cancellations, 19.3% of the total.
Airport capacity, air traffic control flow programs, heavy traffic and ordinary bad weather. A system decision, not the airline’s.
4 cancellations, 3.5% 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.
114 coded cancellations were recorded on JAX → PHL; the section appears from 50.
When it goes wrong
July 2023 – July 2026
56 min late
against a median of 8 min early
JAX → PHL has an average that understates its risk: a typical arrival is 8 min early, but the worst tenth are 64 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 PHL after arriving from JAX.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 34% | Likely to miss |
| 45 min | 21% | High risk |
| 60 min | 15% | High risk |
| 90 min | 9.4% | Some risk |
| 120 min | 6.4% | 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 2.35% of the time and diverts 0.02% of the time, which a late arrival never shows up in.
Chance of missing is the share of 4,731 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 56 minutes late (90th-percentile gate arrival delay), over 4,846 operations.
Any other layover length: connection checker.
Best time to fly
JAX → PHL flights departing 5–9 AM arrived on time 88.9% of the time, against 63.5% for 3–6 PM departures, a gap of 25.4 percentage points.
By departure window
By departure hour
- 12 AM to 5 AM: too few flights to score
- 6 AM: 91.8% on time from 272 flights
- 7 AM: 88.9% on time from 818 flights
- 8 AM: 81.4% on time from 129 flights
- 9 AM: 85.9% on time from 287 flights
- 10 AM: 88.1% on time from 790 flights
- 11 AM: 85.3% on time from 178 flights
- 12 PM to 1 PM: too few flights to score
- 2 PM: 81.4% on time from 262 flights
- 3 PM: 59.0% on time from 155 flights
- 4 PM: 60.0% on time from 416 flights
- 5 PM: 66.3% on time from 716 flights
- 6 PM: 77.0% on time from 258 flights
- 7 PM to 8 PM: too few flights to score
- 9 PM: 68.1% on time from 148 flights
- 10 PM: 71.8% on time from 138 flights
- 11 PM: too few flights to score
Why JAX → PHL 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 JAX → PHL. Only delays of 15 minutes or more are attributed.
Late-arriving aircraft is the largest cause on JAX → PHL, at 54.4%: flights here mostly leave late because the plane came in late, and the day shows it: 5–9 AM departures arrived on time 88.9% of the time and 3–6 PM departures 63.5%.
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 | 2,316 | 78.8% | 1.64% | -6 min | 8.3% |
| PSA Airlines | 1,194 | 81.4% | 3.52% | -12 min | 10.9% |
| Frontier Airlines | 1,156 | 74.7% | 2.68% | -6 min | 11.6% |
American Airlines flew 49.6% of the 4,666 flights listed. PSA Airlines cancelled 3.52% of its flights here against 1.64% for American Airlines.
PSA Airlines arrived on time 6.7 percentage points more often than Frontier Airlines on this route.
Flights on this route
Flight numbers with at least 600 operations here and still on the schedule.
| Flight | Scheduled | Operations | On time |
|---|---|---|---|
| AA709 American Airlines | 7:00 AM | 620 | 89.1% |
Weekly and seasonal patterns
By day of week
Wednesday is historically the most reliable day and Monday the least, a gap of 6.5 percentage points.
By month
- Jan: 80.6%
- Feb: 81.1%
- Mar: 83.2%
- Apr: 84.5%
- May: 78.2%
- Jun: 72.3%
- Jul: 65.0%
- Aug: 72.6%
- Sep: 83.8%
- Oct: 86.0%
- Nov: 87.1%
- Dec: 79.5%
July is historically the weakest month and November the strongest, a spread of 22.1 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 69.5% from 120 flights
- August 2023: 83.9% from 122 flights
- September 2023: too few flights to score (118)
- October 2023: 86.0% 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: 87.7% from 122 flights
- March 2024: 80.3% from 154 flights
- April 2024: 84.9% from 140 flights
- May 2024: 73.9% from 143 flights
- June 2024: 74.2% from 136 flights
- July 2024: 68.5% from 127 flights
- August 2024: 66.9% from 135 flights
- September 2024: 83.5% from 140 flights
- October 2024: 91.8% from 150 flights
- November 2024: 92.3% from 130 flights
- December 2024: 80.3% from 132 flights
- January 2025: too few flights to score (104)
- February 2025: too few flights to score (113)
- March 2025: 88.0% from 126 flights
- April 2025: 80.4% from 165 flights
- May 2025: 78.0% from 145 flights
- June 2025: 68.8% from 151 flights
- July 2025: 54.6% from 142 flights
- August 2025: 68.3% from 146 flights
- September 2025: too few flights to score (117)
- October 2025: 79.7% 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 (115)
- February 2026: too few flights to score (102)
- March 2026: too few flights to score (115)
- April 2026: 89.0% from 137 flights
- May 2026: 82.6% from 151 flights
- June 2026: 73.9% from 162 flights
- July 2026: 67.6% from 153 flights
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 79.5% against 78.0% in the 12 months before — improving by 1.5 percentage points.
Data and methodology
Calculated by FlyerIntel from 4,846 JAX → PHL 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