New calculation
Flight distance & time
Ontario International Airport → Seattle Tacoma International Airport
ONTSEA
- Distance
- 1,540 km · 956 mi
- Flight time
- 02h 40m
- CO₂ per passenger
- 138 kg
This Ontario International Airport → Seattle Tacoma International Airport route is 1,540 km (956 mi) end to end. The estimated flight time is 02h 40m, and a passenger's share of CO₂ works out at roughly 138 kg.
See the reverse route: Seattle Tacoma International Airport → Ontario International Airport
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Your route
- FromONTOntario International AirportOntario, California
- ToSEASeattle Tacoma International AirportSeattle, Washington
Flight map
Track your lifetime distance flown across every trip.
Route service
Average daily flights~5 flights/day
Airlines on this route
ATIDelta Air LinesFrontier AirlinesSolarius Aviation
Common questions
Ontario International Airport to Seattle Tacoma International Airport FAQ
How far is Ontario International Airport from Seattle Tacoma International Airport?
Ontario International Airport (ONT) and Seattle Tacoma International Airport (SEA) are 1,540 km (956 mi) apart, measured along the great-circle route.
How long is the flight from Ontario International Airport to Seattle Tacoma International Airport?
A direct ONT–SEA flight covers the distance in about 02h 40m, though the exact time shifts with aircraft type and winds.
How much CO₂ does a flight from Ontario International Airport to Seattle Tacoma International Airport produce?
A passenger's share of CO₂ on the ONT–SEA route is roughly 138 kg.
Which airlines fly from Ontario International Airport to Seattle Tacoma International Airport?
ATI, Delta Air Lines, Frontier Airlines, Solarius Aviation operate scheduled service between ONT and SEA.
Flight distance and time are estimates for ideal conditions — actual figures vary with aircraft type, routing and weather.
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