Route Reliability
Seattle → Detroit
SEA–DTW · 1,927 miles · Seattle–Tacoma International Airport to Detroit Metropolitan Wayne County Airport
- 84%
- Arrive within 15 minutes
- 0 min
- Average arrival delay
- 0.9%
- Cancelled
- 2,081
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Delta Air Lines85%1,544 flights
- 2.Alaska Airlines82%537 flights
What the data says
Morning-you made the right choice.
SEA–DTW flights departing between 6–9 AM arrived on time 90% of the time, versus 79% between 12–3 PM.
Sunday scaries are real for this one.
SEA–DTW flights arrived on time 90% of the time on Tuesdays. On Sundays: 80%.
Delta Air Lines has a slight edge here.
Delta Air Lines arrived on time 85% of the time on this route; Alaska Airlines managed 82%.
Ticking up lately.
SEA–DTW flights arrived on time 89% of the time over the last three months in the data, compared with 84% 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
- Mon86%(299 flights)
- Tue90%(293 flights)
- Wed86%(290 flights)
- Thu85%(301 flights)
- Fri80%(305 flights)
- Sat85%(257 flights)
- Sun80%(308 flights)
- 3–6 AM89%(78 flights)
- 6–9 AM90%(562 flights)
- 9 AM–12 PM83%(502 flights)
- 12–3 PM79%(132 flights)
- 3–6 PM86%(218 flights)
- 9 PM–12 AM81%(561 flights)
Jun 83% → May 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 83% | 217 |
| July 2025 | 77% | 221 |
| August 2025 | 76% | 212 |
| September 2025 | 85% | 176 |
| October 2025 | 92% | 157 |
| November 2025 | 89% | 152 |
| December 2025 | 80% | 162 |
| January 2026 | 83% | 131 |
| February 2026 | 89% | 124 |
| March 2026 | 90% | 146 |
| April 2026 | 90% | 155 |
| May 2026 | 87% | 200 |
Keep nerding
Based on 2,081 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.