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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 → PHX
Every airline with at least 200 flights on this route, over the route's reporting period.
No side is clearly ahead of the rest on any of the 4 rates measured; the best figures are too close to call: Delta Air Lines and SkyWest Airlines on 2, Southwest Airlines and SkyWest Airlines on 1, Alaska Airlines and Delta Air Lines on 1.
| Metric | Alaska Airlines | Delta Air Lines | Southwest Airlines | SkyWest Airlines |
|---|---|---|---|---|
| On-time arrival · too close to call | 77.1% | 85.1% (best, but too close to call) | 72.4% | 83.3% (too close to call with the best) |
| Cancellation rate · too close to call | 0.89% | 0.50% | 0.35% (too close to call with the best) | 0.17% (best, but too close to call) |
| Severe delay (60+ min) · too close to call | 3.7% (best, but too close to call) | 4.4% (too close to call with the best) | 5.4% | 5.3% |
| Average arrival delay | 4 min | 0 min (best) | 9 min | 6 min |
| Median arrival delay | -2 min | -8 min (best) | 1 min | -6 min |
| Departure on-time · too close to call | 79.4% | 86.5% (best, but too close to call) | 68.1% | 84.8% (too close to call with the best) |
| Flights analyzed | 9,137 | 5,416 | 3,110 | 1,776 |
A check mark and green mark the best figure in a row (higher for on-time rates, lower for delays and cancellations) when it is clearly better than every other side’s: a two-proportion test against each, on that side’s flight count, at about 95% confidence. When it is not, the row says “too close to call” and a “≈” marks the sides that cannot be told apart from the best figure. Average and median delay carry no sample-error estimate here, so they are marked by the printed figure alone.
SEA → PHX (Seattle to Phoenix · 1,107 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 → PHX route page shows the route’s own trend.