Route · PWM → DTW · 2020–2025 BTS data
Portland to Detroit
The PWM–DTW corridor (Portland, ME → Detroit, MI) runs ahead of the national average, served by 17 carriers across roughly 668 miles.
Data updated 2026-06-13
- 86.6%
- On-time
- +7.6 pts
- vs US avg
- 101 min
- Delay when late
- 3,850
- Flights
Cancelled
0.8%
Best Month
Oct 2025 93%
Worst Month
Jul 2025 64%
Distance
668 mi
Carriers
17
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 | 4 | 0 | 0 | DL |
| Sep 2025 | 60 | 9 | 0 | 0 | DL |
| Aug 2025 | 61 | 16 | 1 | 0 | DL |
| Jul 2025 | 58 | 21 | 0 | 1 | YX,DL |
| Jun 2025 | 58 | 14 | 1 | 0 | DL,YX |
| May 2025 | 56 | 6 | 0 | 0 | DL,YX |
| Jan 2025 | 35 | 11 | 0 | 0 | OO |
| Dec 2024 | 61 | 10 | 1 | 0 | OO,YX |
| Nov 2024 | 76 | 12 | 0 | 2 | OO,9E |
| Oct 2024 | 85 | 26 | 0 | 0 | OO |
| Sep 2024 | 84 | 11 | 0 | 0 | YX,OO |
| Aug 2024 | 82 | 12 | 0 | 0 | YX,9E |
| Jul 2024 | 83 | 16 | 0 | 0 | DL,YX |
| Jun 2024 | 72 | 16 | 1 | 0 | DL,YX |
| May 2024 | 31 | 7 | 1 | 0 | DL |
| Apr 2024 | 30 | 1 | 1 | 0 | DL |
| Mar 2024 | 31 | 2 | 0 | 0 | 9E,DL |
| Jan 2024 | 31 | 5 | 3 | 0 | 9E |
| Dec 2023 | 32 | 4 | 0 | 1 | OO,9E |
| Nov 2023 | 56 | 4 | 0 | 0 | 9E |
| Oct 2023 | 62 | 6 | 0 | 0 | 9E |
| Sep 2023 | 60 | 12 | 1 | 0 | 9E,DL |
Cancellation Rate
0.8%
11 of 1,341 flights
Diversion Rate
0.3%
4 of 1,341 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 →DTW - Detroit
Full on-time, delay-cause, and seasonal performance for Detroit, MI.
Destination airport →Compare the two airports
See PWM and DTW 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–DTW.
Routes with a similar on-time rate
What the Data Says About PWM to DTW
Portland to Detroit (PWM to DTW) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86.6% on-time rate across 3,850 flights, with delays that do happen averaging 100.6 minutes. The corridor runs roughly 668 miles and is served by 17 carriers. Over the most recent 24 months, 11 of 1,341 flights were cancelled (0.8%) and 4 diverted (0.3%).
The monthly split is wide on this route: Oct 2025 posted the strongest performance at 93% on-time, while Jul 2025 came in at just 64% - a 30-point swing worth factoring into travel timing.
Frequently Asked Questions
How often are flights delayed from PWM to DTW? ▼
What is the cancellation rate for PWM to DTW? ▼
How far is the flight from PWM to DTW? ▼
When is the best time to fly from PWM to DTW? ▼
Flight Guides
Tips and data-driven advice for choosing reliable routes.
Explore PlainFlights
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.