Route
DTW → SEA
Detroit Metropolitan Wayne County Airport Seattle–Tacoma International Airport
How punctual is this route?
- On-time arrivals
- 72.8%
- Less than 15 minutes late
- Cancelled
- 0.7%
- Of scheduled flights
- Average delay when late
- 61 min
- Flights arriving 15+ minutes late
- Flights tracked
- 2,067
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 50%
- Air traffic control & airport 27%
- Late-arriving aircraft 20%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 89.8% | 176 |
| October 2025 | 87.3% | 159 |
| November 2025 | 72.1% | 154 |
| December 2025 | 37.7% | 164 |
| January 2026 | 68.4% | 135 |
| February 2026 | 70.7% | 125 |
| March 2026 | 47.2% | 151 |
| April 2026 | 81.9% | 155 |
| May 2026 | 75.6% | 206 |
| June 2026 | 76.6% | 209 |
| July 2026 | 77.1% | 216 |
| August 2026 | 78.7% | 217 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| Delta Air Lines | 1,518 | 71.3% | 0.8% | 62 min |
| Alaska Airlines | 549 | 76.9% | 0.4% | 57 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
DL734
26% late · 365 flights
-
DL728
23% late · 364 flights
-
DL565
38% late · 339 flights
-
AS313
25% late · 332 flights
-
DL944
33% late · 327 flights
-
DL814
10% late · 86 flights
-
AS381
7% late · 83 flights
-
AS344
26% late · 82 flights
-
DL732
26% late · 35 flights
-
AS138
57% late · 28 flights
-
AS1524
5% late · 21 flights
Reviews
No reviews yet. Be the first to review this route.