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SEA–ONT · Nonstop
Seattle (Seattle-Tacoma International Airport) to Ontario (Ontario International Airport).
The estimated flight time from Seattle (SEA) to Ontario (ONT) is about 2h 34m, covering 957 miles. Alaska Airlines, Delta Air Lines, and Frontier Airlines fly the route nonstop with 8-9/day departures, from 08:22 to 20:33 local time.
Plan this route| Est. flight time | Distance | Route type | Captured freq. | Market |
|---|---|---|---|---|
| ~2h 34m Estimated from great-circle distance — no tracked flights yet. | 957 mi | Nonstop | 8-9/day From the current provider sample; confirm live timetables before booking. | Domestic |
Alaska Airlines, Delta Air Lines, and Frontier Airlines operate 8-9/day flights from SEA to ONT.
| Airline | Captured frequency | Aircraft | Departures (local) |
|---|---|---|---|
| Alaska Airlines | 4-5/day | Boeing 737 · Seat map | 08:3008:3310:2513:5014:1717:4917:5020:33 |
| Delta Air Lines | 2-3/day | Embraer E-Jet | 08:2211:5014:3019:50 |
| Frontier Airlines | 1/day | Airbus A320 family · Seat map | 12:19 |
Methodology: airline, aircraft, terminal, and departure-time details come from a full week of published airline schedules for SEA, refreshed on a rolling basis. Frequency uses 59 scheduled departures across 7 observed days; flight time is estimated from flying distance until this route has enough tracked flights for an observed average.
The estimated flight time from Seattle (SEA) to Ontario (ONT) is about 2h 34m, based on the 957-mile flying distance.
Seattle (SEA) to Ontario (ONT) is about 957 miles by air.
Yes. Alaska Airlines, Delta Air Lines, and Frontier Airlines fly nonstop from Seattle (SEA) to Ontario (ONT), with 8-9/day departures.
Alaska Airlines, Delta Air Lines, and Frontier Airlines fly nonstop from Seattle (SEA) to Ontario (ONT).
The SEA–ONT route is flown with Airbus A320 family, Boeing 737, Embraer E-Jet.