Route Reliability
Portland → Detroit
PWM–DTW · 668 miles · Portland International Jetport to Detroit Metropolitan Wayne County Airport
- 79%
- Arrive within 15 minutes
- 8 min
- Average arrival delay
- 1.1%
- Cancelled
- 660
- Flights in the data
Data through May 2026.
Delta Air Lines is the only airline in this data on this route, arriving on time 79% of the time across 660 flights. No comparison to make.
What the data says
6–9 PM has a slight edge.
Departures between 6–9 PM arrived on time 82% of the time, against 78% between 3–6 PM.
Sunday scaries are real for this one.
PWM–DTW flights arrived on time 86% of the time on Wednesdays. On Sundays: 74%.
Trending in the right direction.
PWM–DTW flights arrived on time 85% of the time over the last three months in the data, compared with 67% in the three months before that.
Best historical flights
Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.
Top flights by on-time rate
More flights on this route
The breakdown
- Mon74%(93 flights)
- Tue79%(94 flights)
- Wed86%(92 flights)
- Thu80%(92 flights)
- Fri85%(92 flights)
- Sat76%(93 flights)
- Sun74%(95 flights)
- 9 AM–12 PM—(1 flights)
- 12–3 PM80%(360 flights)
- 3–6 PM78%(268 flights)
- 6–9 PM82%(22 flights)
Jun 75% → May 90% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 75% | 59 |
| July 2025 | 67% | 60 |
| August 2025 | 73% | 60 |
| September 2025 | 85% | 60 |
| October 2025 | 93% | 61 |
| November 2025 | 90% | 57 |
| December 2025 | 62% | 58 |
| January 2026 | 59% | 34 |
| February 2026 | 82% | 27 |
| March 2026 | 76% | 55 |
| April 2026 | 90% | 59 |
| May 2026 | 90% | 61 |
Keep nerding
Based on 660 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.