Direct flights from Seattle to Ontario (SEA → ONT)

Distance 1,540 km (957 mi)
Est. duration 1h 49m
SEA
Seattle
Seattle Tacoma International, USA
ONT
Ontario
Ontario International Airport, USA
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Live fares · SEA → ONT

Available flights

Frontier AirlinesNon-stop
from$147
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Frequently asked questions

How far is the flight from Seattle to Ontario? The flight distance from SEA to ONT is approximately 1,540 km (957 miles).
How long is the flight from SEA to ONT? The estimated flight time from Seattle to Ontario is approximately 1h 49m.
What airlines fly from SEA to ONT? Airlines operating direct flights from Seattle to Ontario include: AS, DL, F9.

Cheapest fares Seattle → Ontario

Seattle SEA
Ontario ONT
May — June — July — August — September — October —

Related guides for this route

Sibling pages from across Flightmaps — fares, visa rules, country aggregations, and per-airline routes for Seattle → Ontario.

Cheap flights from Seattle to Ontario Cheapest month to fly to Ontario Flights from USA Flights to USA Visa-free with USA passport All airports in USA AS routes & destinations All routes by this carrier DL routes & destinations All routes by this carrier F9 routes & destinations All routes by this carrier

Try a nearby airport to Seattle

Flights to Ontario (ONT) from other airports within 350 km of Seattle. Often unlocks cheaper fares or better times.

PAE → ONT 52 km from SEA Everett → Ontario USA · 9 destinations BLI → ONT 151 km from SEA Bellingham → Ontario USA · 7 destinations YYJ → ONT 157 km from SEA Victoria → Ontario Canada · 15 destinations YVR → ONT 205 km from SEA Vancouver → Ontario Canada · 123 destinations PDX → ONT 207 km from SEA Portland → Ontario USA · 90 destinations

Or try a nearby airport to Ontario

Flights from Seattle (SEA) to other airports within 350 km of Ontario.

SEA → SNA 48 km from ONT Seattle → Santa Ana USA · 48 destinations SEA → LGB 57 km from ONT Seattle → Long Beach USA · 18 destinations SEA → BUR 71 km from ONT Seattle → Burbank USA · 31 destinations SEA → LAX 75 km from ONT Seattle → Los Angeles USA · 181 destinations SEA → VNY 84 km from ONT Seattle → Los Angeles USA · 9 destinations

Other flights from Seattle (SEA)

Albuquerque (ABQ) Amsterdam (AMS) Anchorage (ANC) Arcata (ACV) Atlanta (ATL) Austin (AUS) Baltimore (BWI) Barcelona (BCN) All 139 destinations →

Other flights from Ontario (ONT)

Atlanta (ATL) Austin (AUS) Baltimore (BWI) Boise (BOI) Charlotte (CLT) Chicago (MDW) Chicago (ORD) Dallas (DAL) All 31 destinations →