Best airline from Seattle to Detroit
Most punctual on this route
91.89% on time across 149 flights · 0% cancelled
Alaska Airlines is close enough behind (90%) that the two are effectively tied — pick on schedule and price.
Every airline on SEA to DTW, ranked
| # | Airline | Flights | On time | Cancelled | Grade |
|---|---|---|---|---|---|
| 1 | Delta Air Lines | 149 | 91.89% | 0% | A |
| 2 | Alaska Airlines | 60 | 90% | 0% | — |
Why this is worth checking per route
An airline's overall punctuality is an average across everywhere it flies, and averages hide the thing you are booking. A carrier can be middling nationally and the best option on this particular pair of airports — because of which slots it holds, what time of day it schedules, and which aircraft feeds the flight.
Punctuality is one dimension of a good airline and not the one most people would name first. It is, though, the only one measured the same way for everybody and published by someone with no stake in the answer. Full SEA to DTW record → · Best time of year to fly it →