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Enter a route to see every airline that flies it with enough flights, side by side on the same metrics, from the same source.
Airlines on SEA → MCI
Every airline with at least 200 flights on this route, over the route's reporting period.
Alaska Airlines is clearly ahead on 1 of 4 rates; the other 3 are too close to call.
| Metric | Alaska Airlines | Delta Air Lines |
|---|---|---|
| On-time arrival · too close to call | 78.9% | 79.1% |
| Cancellation rate · too close to call | 0.67% | 1.34% |
| Severe delay (60+ min) | 4.0% (better) | 8.4% |
| Average arrival delay | 3 min (better) | 5 min |
| Median arrival delay | -4 min | -7 min (better) |
| Departure on-time · too close to call | 81.2% | 78.4% |
| Flights analyzed | 2,384 | 1,122 |
A check mark and green mark the better figure in a row (higher for on-time rates, lower for delays and cancellations) when the gap is larger than chance would produce: a two-proportion test on each side’s flight count, at about 95% confidence. “Too close to call” rows differ by less than that. Average and median delay carry no sample-error estimate here, so they are marked by the printed figure alone.
SEA → MCI (Seattle to Kansas City · 1,489 mi): July 2023 – July 2026. FlyerIntel keeps one total per airline for the route, not the dates each airline started or stopped flying it, so an airline that flew the route for only part of that time is measured over that part.
Source: FlyerIntel analysis of US DOT BTS data · Airlines with fewer than 200 flights on this route are left out.
Month by month
There is no month-by-month chart for these airlines. FlyerIntel keeps monthly figures for each route and for each airline across its whole network, but not for one airline on one route. The SEA → MCI route page shows the route’s own trend.