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ONT–SEA · Nonstop
Ontario (Ontario International Airport) to Seattle (Seattle-Tacoma International Airport).
The nonstop flight from Ontario (ONT) to Seattle (SEA) takes 2h 8m on average, covering about 957 miles. Across 12 flights we tracked, the fastest was 2h 2m and the slowest 2h 24m. The current schedule below is the better source for planned airline frequency.
Plan this route| Avg flight time | Distance | Route type | Fastest tracked | Airlines |
|---|---|---|---|---|
| 2h 8m | 957 mi | Nonstop | 2h 2m | 3 |
Alaska Airlines, Delta Air Lines, and Frontier Airlines operate 7-8/day flights from ONT to SEA. Terminal assignments in the captured sample are not confirmed for your flight; check the airline before travel.
| Airline | Captured frequency | Aircraft | Departures (local) |
|---|---|---|---|
| Alaska Airlines | 3-4/day | Boeing 737 · Airline terminal guide (confirm for your flight) · Seat map | 06:0212:1215:1419:2019:59 |
| Delta Air Lines | 2-3/day | Embraer E-Jet · Airline terminal guide (confirm for your flight) | 06:0011:5418:00 |
| Frontier Airlines | 1/day | Airbus A320 family · Seat map | 17:3417:44 |
Airlines seen among the 12 flights we have tracked on ONT to SEA. The sample is too small to rank carriers by share; the scheduled departures above show who flies this route most.
Methodology: figures are aggregated from 12 real flights on this route, sourced from live flight data. Updated daily as new flights are observed.
The nonstop flight from Ontario (ONT) to Seattle (SEA) takes 2h 8m on average. The fastest flight we have tracked took 2h 2m and the slowest 2h 24m.
Ontario (ONT) to Seattle (SEA) is about 957 miles by air.
Yes. Alaska Airlines, Delta Air Lines, and Frontier Airlines fly nonstop from Ontario (ONT) to Seattle (SEA), with 7-8/day departures.
Alaska Airlines, Delta Air Lines, and Frontier Airlines fly nonstop from Ontario (ONT) to Seattle (SEA).
The ONT–SEA route is flown with Airbus A320 family, Boeing 737, Embraer E-Jet.