Route · BWI → PWM · 2020–2025 BTS data
Baltimore to Portland
The BWI–PWM corridor (Baltimore, MD → Portland, ME) runs behind the national average, served by 1 carrier across roughly 452 miles.
Data updated 2026-06-13
- 75.9%
- On-time
- -3.1 pts
- vs US avg
- 52 min
- Delay when late
- 7,227
- Flights
Cancelled
1.0%
Best Month
Feb 2025 91%
Worst Month
Jul 2025 55%
Distance
452 mi
Carriers
1
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 108 | 23 | 0 | 0 | WN |
| Nov 2025 | 107 | 18 | 0 | 0 | WN |
| Oct 2025 | 123 | 18 | 0 | 0 | WN |
| Sep 2025 | 121 | 15 | 0 | 0 | WN |
| Aug 2025 | 135 | 25 | 0 | 0 | WN |
| Jul 2025 | 123 | 55 | 5 | 0 | WN |
| Jun 2025 | 119 | 42 | 0 | 0 | WN |
| May 2025 | 115 | 28 | 0 | 0 | WN |
| Apr 2025 | 107 | 19 | 0 | 0 | WN |
| Mar 2025 | 94 | 16 | 0 | 1 | WN |
| Feb 2025 | 92 | 8 | 4 | 1 | WN |
| Jan 2025 | 97 | 16 | 1 | 0 | WN |
| Dec 2024 | 106 | 27 | 0 | 0 | WN |
| Nov 2024 | 106 | 24 | 0 | 0 | WN |
| Oct 2024 | 124 | 17 | 0 | 0 | WN |
| Sep 2024 | 120 | 27 | 1 | 0 | WN |
| Aug 2024 | 124 | 38 | 2 | 0 | WN |
| Jul 2024 | 124 | 41 | 0 | 1 | WN |
| Jun 2024 | 117 | 39 | 2 | 0 | WN |
| May 2024 | 93 | 38 | 1 | 0 | WN |
| Apr 2024 | 90 | 22 | 5 | 1 | WN |
| Mar 2024 | 92 | 24 | 1 | 0 | WN |
| Feb 2024 | 83 | 13 | 0 | 0 | WN |
| Jan 2024 | 91 | 27 | 5 | 0 | WN |
Cancellation Rate
1.0%
27 of 2,611 flights
Diversion Rate
0.2%
4 of 2,611 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
BWI - Baltimore
Full on-time, delay-cause, and seasonal performance for Baltimore, MD.
Origin airport →PWM - Portland
Full on-time, delay-cause, and seasonal performance for Portland, ME.
Destination airport →Compare the two airports
See BWI 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 BWI–PWM.
Routes with a similar on-time rate
What the Data Says About BWI to PWM
The Baltimore to Portland corridor (BWI to PWM) posts a 75.9% on-time rate on the lower edge of the average band, based on 7,227 tracked flights. Late flights run 51.8 minutes behind on average. 1 carrier cover the 452-mile route; over the last 24 months, 27 of 2,611 flights were cancelled (1.0%) and 0.2% diverted.
The monthly split is wide on this route: Feb 2025 posted the strongest performance at 91% on-time, while Jul 2025 came in at just 55% - a 36-point swing worth factoring into travel timing.
Frequently Asked Questions
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Flight Guides
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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.