Showing Southwest only (incl. its regional partners)All airlines ×
18 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines
No nonstop, and no clear pattern: the best connection reaches Seattle on time 77% of the time.
Flights, best and worst
Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
No Southwest flight on this route ran 150+ times in the year.
Nonstops by airline and airport
Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
| Southwest | MCI | SEA | – | 72%few flights | 0.0% | 18 | Not flying now |
Alternatives with one stop
All connections →| SouthwestDetails → | MCI 05:55 → DEN 06:45WN 2545 | 1h 00m Denver | DEN 07:45 → SEA 09:45WN 1713 | 5h 50m | 91% | 77% |
| SouthwestDetails → | MCI 06:55 → DEN 07:45WN 2546 | 2h 20m Denver | DEN 10:05 → SEA 12:05WN 3051 | 7h 10m | 100% | 76% |
| SouthwestDetails → | MCI 05:50 → PHX 06:35WN 2578 | 2h 00m Phoenix | PHX 08:35 → SEA 11:40WN 3330 | 7h 50m | 100% | 72% |
About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON