The nonstop is quickest: Alaska CLE → SEA (5h 11m), on time 63% of the time. United via Dulles (8h 51m) is more reliable, 90%, but takes 3h 40m longer.
Time of day × airport
Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).
Pick an hour to see this route’s flights leaving then.
Airlines on this route
Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
| Alaska | 456 | 64% | 1.8% | 50 min |
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.
| AS 216 | CLE 17:32 | SEA 19:41 | 59% |
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.
| Alaska | CLE | SEA | 5h 11m | 64% | 1.8% | 456 | Flying now |
Alternatives with one stop
All connections →| SouthwestDetails → | CLE 05:30 → DEN 06:40WN 3930 | 1h 05m Denver | DEN 07:45 → SEA 09:45WN 1713 | 7h 15m | 98% | 81% |
| UnitedDetails → | CLE 08:55 → DEN 10:10UA 690 | 1h 12m Denver | DEN 11:22 → SEA 13:22UA 1424 | 7h 27m | 95% | 81% |
| UnitedDetails → | CLE 07:00 → ORD 07:36UA 490 | 1h 09m Chicago | ORD 08:45 → SEA 11:38UA 2099 | 7h 38m | 93% | 76% |
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