Route · PWM → PHL · 2020–2025 BTS data
Portland to Philadelphia
The PWM–PHL corridor (Portland, ME → Philadelphia, PA) runs ahead of the national average, served by 18 carriers across roughly 364 miles.
Data updated 2026-06-13
- 83.2%
- On-time
- +4.2 pts
- vs US avg
- 107 min
- Delay when late
- 4,607
- Flights
Cancelled
2.0%
Best Month
Nov 2023 93%
Worst Month
Aug 2024 66%
Distance
364 mi
Carriers
18
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Oct 2025 | 100 | 29 | 1 | 1 | AA,OH |
| Sep 2025 | 102 | 16 | 0 | 0 | OH,AA |
| Aug 2025 | 119 | 26 | 1 | 0 | AA,OH |
| Jul 2025 | 112 | 34 | 5 | 0 | AA,OH |
| Jun 2025 | 93 | 28 | 3 | 1 | AA,OH |
| May 2025 | 93 | 26 | 4 | 0 | AA,OH |
| Apr 2025 | 81 | 17 | 0 | 0 | OH,AA |
| Jan 2025 | 34 | 10 | 3 | 0 | AA,OH |
| Dec 2024 | 83 | 12 | 0 | 0 | AA,OH,YX |
| Nov 2024 | 87 | 7 | 0 | 0 | YX,OH,AA |
| Oct 2024 | 97 | 13 | 1 | 0 | AA |
| Sep 2024 | 118 | 21 | 0 | 0 | OH,AA |
| Aug 2024 | 122 | 42 | 7 | 0 | AA,F9,OH |
| Jul 2024 | 111 | 34 | 3 | 0 | AA,F9,OH,YX |
| Jun 2024 | 128 | 34 | 4 | 1 | AA,F9,OH,YX |
| May 2024 | 95 | 9 | 3 | 0 | AA,F9,OH,YX |
| Apr 2024 | 38 | 8 | 1 | 0 | AA,OH,YX |
| Mar 2024 | 31 | 4 | 0 | 0 | AA |
| Jan 2024 | 31 | 8 | 1 | 0 | AA,OH |
| Dec 2023 | 34 | 3 | 0 | 0 | OH,YX |
| Nov 2023 | 60 | 4 | 0 | 0 | AA,OH,YX |
| Oct 2023 | 92 | 15 | 0 | 0 | AA |
| Sep 2023 | 88 | 22 | 4 | 0 | AA |
| Aug 2023 | 93 | 24 | 0 | 0 | AA |
Cancellation Rate
2.0%
41 of 2,042 flights
Diversion Rate
0.1%
3 of 2,042 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
PWM - Portland
Full on-time, delay-cause, and seasonal performance for Portland, ME.
Origin airport →PHL - Philadelphia
Full on-time, delay-cause, and seasonal performance for Philadelphia, PA.
Destination airport →Compare the two airports
See PWM and PHL side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to PWM–PHL.
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What the Data Says About PWM to PHL
Bureau of Transportation Statistics records show Portland to Philadelphia (PWM to PHL) running a 83.2% on-time rate over 4,607 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 107.0 minutes. The 364-mile corridor is served by 18 carriers, and over the last 24 months 2.0% of 2,042 flights were cancelled, 0.1% diverted.
The monthly split is wide on this route: Nov 2023 posted the strongest performance at 93% on-time, while Aug 2024 came in at just 66% - a 28-point swing worth factoring into travel timing.
Frequently Asked Questions
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Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.