Ontario (ONT) to Seattle (SEA) September 2, 2025 Flight Schedule

Flight Ontario(ONT) to Seattle(SEA)
CHANGE DIRECTION

LA/Ontario International Airport Seattle-Tacoma International Airport
ONT : Ontario , United States SEA : Seattle , United States
UTC-7(DST) UTC-7(DST)

Ontario to Seattle Flight Schedule(September 2, 2025)

Flight from Ontario(ONT) to Seattle(SEA) is operated by 4 airlines : Delta Air Lines (DL),Alaska Airlines (AS), (),Frontier Airlines (F9). You can check flight schedules, flight duration, and aircraft types.

Change Direction(SEA to ONT)

Ontario (ONT) to Seattle (SEA) Flight Schedule

LastUpdate : 2025/09/01 06:00

Flight Schedule on September 2, 2025 , Direct flight departure from Ontario with all airlines , flight number, flight duration, aircraft type.

September 2025
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Change Direction(SEA to ONT)
Flight Number / Airline Departure Time Arrival Time Flight Duration Operating Days Aircraft Type Airfare / Tickets
AS1091
Alaska Airlines
06:00 08:45 2h45m
-T----- (Sep 2)
737-900 (WL) Trip.com PRICES HIS Prices Expedia PRICES skyticket PRICES
Codeshare flight
DL4042
Delta Air Lines
06:00 08:48 2h48m
-T----- (Sep 2)
E175 (WL) Trip.com PRICES HIS Prices Expedia PRICES skyticket PRICES
Codeshare flight
AS1111
Alaska Airlines
11:39 14:22 2h43m
-T----- (Sep 2)
737-800 (WL) Trip.com PRICES HIS Prices Expedia PRICES skyticket PRICES
Codeshare flight
DL1566
Delta Air Lines
11:40 14:25 2h45m
-T----- (Sep 2)
A220-100 Trip.com PRICES HIS Prices Expedia PRICES skyticket PRICES
Codeshare flight
AS1119
Alaska Airlines
15:06 17:46 2h40m
-T----- (Sep 2)
737-900 (WL) Trip.com PRICES HIS Prices Expedia PRICES skyticket PRICES
Codeshare flight
F92275
Frontier Airlines
17:03 19:53 2h50m
-T----- (Sep 2)
A320neo Trip.com PRICES HIS Prices Expedia PRICES skyticket PRICES
Codeshare flight
DL4031
Delta Air Lines
18:05 20:50 2h45m
-T----- (Sep 2)
E175 (WL) Trip.com PRICES HIS Prices Expedia PRICES skyticket PRICES
Codeshare flight
Change Direction(SEA to ONT)
Flight schedules as of September 01, 2025, 06:00 AM(OAG data). Schedules may change without notice, so please check with airlines before booking. Refer to FlyTeam's terms of use before proceeding. Some airlines and flight numbers may not be displayed.

FAQ : Ontario to Seattle

How many airlines fly from Ontario to Seattle ?
As of September 2, 2025, 4 airlines operate direct flights from Ontario (ONT) to Seattle (SEA) : Delta Air Lines , Alaska Airlines , , Frontier Airlines.
How far is it from Ontario to Seattle?
The distance between Ontario (ONT) to Seattle (SEA) is approximately 960 miles(1,540km) by air.
What is the time difference between Ontario to Seattle?
There is no time difference between LA/Ontario International Airport(Ontario) and Seattle-Tacoma International Airport(Seattle).Ontario is currently observing daylight saving time (DST) from March 9, 2025 to November 2, 2025.Seattle is currently observing daylight saving time (DST) from March 9, 2025 to November 2, 2025.