Route Reliability
Detroit → Seattle
DTW–SEA · 1,927 miles · Detroit Metropolitan Wayne County Airport to Seattle–Tacoma International Airport
- 74%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 0.9%
- Cancelled
- 2,085
- Flights in the data
Data through May 2026.
Who flies it best
Ranked by on-time arrivals. Historical results, not predictions.
- 1.Alaska Airlines76%538 flights
- 2.Delta Air Lines74%1,547 flights
What the data says
The 6–9 AM departure wins.
DTW–SEA flights departing between 6–9 AM arrived on time 82% of the time, versus 65% between 9 AM–12 PM.
Sunday scaries are real for this one.
DTW–SEA flights arrived on time 80% of the time on Tuesdays. On Sundays: 70%.
Not much between Alaska Airlines and Delta Air Lines.
On this route they all land within 74% to 76% on time. Pick on schedule and price.
Trending in the right direction.
DTW–SEA flights arrived on time 69% of the time over the last three months in the data, compared with 61% 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
- Mon71%(301 flights)
- Tue80%(293 flights)
- Wed75%(294 flights)
- Thu77%(302 flights)
- Fri72%(302 flights)
- Sat78%(258 flights)
- Sun70%(312 flights)
- 6–9 AM82%(591 flights)
- 9 AM–12 PM65%(26 flights)
- 12–3 PM78%(360 flights)
- 3–6 PM72%(649 flights)
- 6–9 PM66%(433 flights)
- 9 PM–12 AM—(3 flights)
Jun 79% → May 78% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 79% | 217 |
| July 2025 | 77% | 223 |
| August 2025 | 84% | 212 |
| September 2025 | 90% | 176 |
| October 2025 | 87% | 158 |
| November 2025 | 73% | 154 |
| December 2025 | 40% | 162 |
| January 2026 | 71% | 133 |
| February 2026 | 72% | 123 |
| March 2026 | 47% | 144 |
| April 2026 | 83% | 155 |
| May 2026 | 78% | 205 |
Keep nerding
Based on 2,085 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.