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.
Nonstops (seasonal or thin)
Nonstop details →| Alaska | CLE | SEA | 5h 11m | 64% | 1.8% | 456 | Flying now |
Best connections, any airlines
Ranked by chance you reach Seattle on time. Total trip = scheduled departure to arrival, layover included (Seattle is 3 h behind Cleveland). Layovers up to 4 hours. Pick a connection for the details.
| United + Alaskatwo ticketsDetails → | CLE 15:42 → LAX 17:38UA 679 | 3h 34m Los Angeles | LAX 21:12 → SEA 23:59AS 495 | 11h 17m | 99% | 91% |
| American + Deltatwo ticketsDetails → | CLE 07:36 → PHX 08:55AA 3110 | 3h 10m Phoenix | PHX 12:05 → SEA 15:18DL 2419 | 10h 42m | 97% | 90% |
| UnitedDetails → | CLE 06:00 → IAD 07:15UA 1252 | 1h 45m Dulles | IAD 09:00 → SEA 11:51UA 2101 | 8h 51m | 99% | 90% |
| UnitedDetails → | CLE 07:15 → LAX 09:12UA 776 | 2h 31m Los Angeles | LAX 11:43 → SEA 14:36UA 325 | 10h 21m | 97% | 86% |
| Southwest + Alaskatwo ticketsDetails → | CLE 06:40 → BNA 07:10WN 4568 | 2h 15m Nashville | BNA 09:25 → SEA 12:26AS 623 | 8h 46m | 100% | 85% |
| Delta + Alaskatwo ticketsDetails → | CLE 07:28 → SLC 09:30DL 2207 | 3h 21m Salt Lake City | SLC 12:51 → SEA 14:04AS 664 | 9h 36m | 96% | 84% |
| DeltaDetails → | CLE 05:35 → ATL 07:22DL 2734 | 3h 48m Atlanta | ATL 11:10 → SEA 13:38DL 648 | 11h 03m | 98% | 84% |
| UnitedDetails → | CLE 09:00 → ORD 09:34UA 1355 | 3h 56m Chicago | ORD 13:30 → SEA 16:09UA 1660 | 10h 09m | 100% | 83% |
| Tight connection: often missed | ||||||
| AmericanDetails → | CLE 11:51 → DFW 13:42AA 1680 | 51m Dallas-Fort Worth | DFW 14:33 → SEA 16:47AA 727 | 7h 56m | 67% | 37% |
| AmericanDetails → | CLE 17:12 → PHL 18:47AA 5129 · flown by PSA | 48m Philadelphia | PHL 19:35 → SEA 22:56AA 3259 | 8h 44m | 55% | 35% |
| AmericanDetails → | CLE 19:52 → DFW 21:48AA 1682 | 53m Dallas-Fort Worth | DFW 22:41 → SEA 00:57 +1AA 1487 | 8h 05m | 45% | 19% |
Same layover, different day-part
How often the first flight arrives too late to connect (45 min minimum), for one-ticket layovers of 45–80 minutes.
Delays build through the day, so an afternoon first leg eats the layover. A short connection is fine early in the morning and a gamble later on.
Mixing airlines
The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →
Regional partners count as the airline that sells them: SkyWest flying Delta Connection is one Delta ticket.
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