Route · PHL → PWM · 2020–2025 BTS data
Philadelphia to Portland
The PHL–PWM corridor (Philadelphia, PA → Portland, ME) runs ahead of the national average, served by 19 carriers across roughly 364 miles.
Data updated 2026-06-13
- 81.3%
- On-time
- +2.3 pts
- vs US avg
- 82 min
- Delay when late
- 4,615
- Flights
Cancelled
2.0%
Best Month
Nov 2023 93%
Worst Month
Aug 2024 55%
Distance
364 mi
Carriers
19
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Oct 2025 | 100 | 29 | 1 | 0 | AA,OH |
| Sep 2025 | 102 | 16 | 0 | 0 | AA |
| Aug 2025 | 119 | 31 | 1 | 0 | AA,OH |
| Jul 2025 | 112 | 36 | 5 | 0 | AA,OH |
| Jun 2025 | 94 | 40 | 2 | 0 | AA,OH |
| May 2025 | 93 | 16 | 4 | 0 | AA,OH |
| Apr 2025 | 82 | 12 | 0 | 0 | OH,AA |
| Jan 2025 | 34 | 11 | 2 | 0 | AA,OH |
| Dec 2024 | 83 | 13 | 0 | 1 | AA,OH,YX |
| Nov 2024 | 87 | 9 | 0 | 0 | YX,OH,AA |
| Oct 2024 | 96 | 16 | 0 | 0 | AA |
| Sep 2024 | 118 | 20 | 0 | 2 | OH,AA |
| Aug 2024 | 123 | 55 | 8 | 0 | AA,F9,OH |
| Jul 2024 | 111 | 40 | 5 | 0 | AA,F9,OH,YX |
| Jun 2024 | 128 | 34 | 5 | 2 | AA,F9,OH,YX |
| May 2024 | 95 | 14 | 2 | 0 | AA,F9,OH,YX |
| Apr 2024 | 39 | 8 | 1 | 0 | AA,OH,YX |
| Mar 2024 | 31 | 6 | 0 | 0 | AA |
| Jan 2024 | 31 | 4 | 1 | 0 | AA,OH |
| Dec 2023 | 33 | 1 | 0 | 1 | OH,YX |
| Nov 2023 | 60 | 4 | 0 | 0 | AA,OH,YX |
| Oct 2023 | 92 | 11 | 0 | 0 | AA |
| Sep 2023 | 88 | 25 | 3 | 1 | AA |
| Aug 2023 | 94 | 25 | 0 | 0 | AA,YX |
Cancellation Rate
2.0%
40 of 2,045 flights
Diversion Rate
0.3%
7 of 2,045 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
PHL - Philadelphia
Full on-time, delay-cause, and seasonal performance for Philadelphia, PA.
Origin airport →PWM - Portland
Full on-time, delay-cause, and seasonal performance for Portland, ME.
Destination airport →Compare the two airports
See PHL and PWM side by side on delays, cancellations, and reliability.
Open comparison tool →Similar routes
Other BTS-tracked routes with comparable performance or trip length to PHL–PWM.
Routes with a similar on-time rate
What the Data Says About PHL to PWM
4,615 tracked flights put the PHL to PWM pairing (Philadelphia to Portland) at a 81.3% on-time rate, squarely in line with the wider network. Delays that do occur run 82.1 minutes on average. Across the 364-mile route and its 19 carriers, the trailing 24 months show 2.0% cancelled and 0.3% diverted (2,045 flights sampled).
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 55% - a 38-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.