Route · DTW → PWM · 2020–2025 BTS data
Detroit to Portland
The DTW–PWM corridor (Detroit, MI → Portland, ME) runs ahead of the national average, served by 16 carriers across roughly 668 miles.
Data updated 2026-06-13
- 84.7%
- On-time
- +5.7 pts
- vs US avg
- 81 min
- Delay when late
- 3,848
- Flights
Cancelled
0.5%
Best Month
May 2025 95%
Worst Month
Dec 2024 66%
Distance
668 mi
Carriers
16
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 40 | 14 | 0 | 0 | DL,OO |
| Nov 2025 | 36 | 6 | 1 | 0 | DL |
| Oct 2025 | 61 | 5 | 0 | 0 | DL |
| Sep 2025 | 60 | 9 | 0 | 0 | DL |
| Aug 2025 | 61 | 13 | 0 | 0 | DL |
| Jul 2025 | 58 | 8 | 0 | 0 | YX,DL |
| Jun 2025 | 58 | 9 | 1 | 0 | DL,YX |
| May 2025 | 55 | 3 | 0 | 0 | DL,YX |
| Jan 2025 | 34 | 10 | 0 | 0 | OO |
| Dec 2024 | 61 | 21 | 1 | 0 | OO,YX |
| Nov 2024 | 76 | 18 | 0 | 0 | OO,9E |
| Oct 2024 | 85 | 24 | 0 | 0 | OO |
| Sep 2024 | 84 | 13 | 0 | 1 | OO |
| Aug 2024 | 82 | 9 | 0 | 0 | YX,9E |
| Jul 2024 | 83 | 15 | 0 | 0 | DL,YX |
| Jun 2024 | 72 | 13 | 1 | 2 | DL,YX |
| May 2024 | 31 | 12 | 0 | 0 | DL |
| Apr 2024 | 30 | 4 | 1 | 0 | DL |
| Mar 2024 | 31 | 4 | 0 | 0 | 9E,DL |
| Jan 2024 | 31 | 9 | 2 | 0 | 9E |
| Dec 2023 | 31 | 7 | 0 | 1 | OO,9E |
| Nov 2023 | 56 | 4 | 0 | 0 | 9E |
| Oct 2023 | 62 | 5 | 0 | 0 | 9E |
| Sep 2023 | 60 | 12 | 0 | 0 | 9E,DL |
Cancellation Rate
0.5%
7 of 1,338 flights
Diversion Rate
0.3%
4 of 1,338 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
DTW - Detroit
Full on-time, delay-cause, and seasonal performance for Detroit, MI.
Origin airport →PWM - Portland
Full on-time, delay-cause, and seasonal performance for Portland, ME.
Destination airport →Compare the two airports
See DTW 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 DTW–PWM.
Routes with a similar on-time rate
What the Data Says About DTW to PWM
Bureau of Transportation Statistics records show Detroit to Portland (DTW to PWM) running a 84.7% on-time rate over 3,848 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 81.2 minutes. The 668-mile corridor is served by 16 carriers, and over the last 24 months 0.5% of 1,338 flights were cancelled, 0.3% diverted.
The monthly split is wide on this route: May 2025 posted the strongest performance at 95% on-time, while Dec 2024 came in at just 66% - a 29-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from DTW to PWM? ▼
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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.