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Cheap flights from Ontario to Seattle
Round-trip
Economy
Flight information for Ontario to Seattle
Find info about flight duration, direct flights, and airports for your flight from Ontario to Seattle
| Best Price Found | $138 | The best flight deal from Ontario to Seattle found on momondo in the last 72 hours is $138 | |
| Fastest flight time | 2h 40m | The fastest flight from Ontario to Seattle takes 2h 40m. | |
| Direct flights | None | There are no direct flights from Ontario to Seattle. Popular non-direct route for this connection is Ontario - Seattle/Tacoma Intl. | |
| Airports in Seattle | 3 airports | There are 3 airports near Seattle: Seattle King County/Boeing (BFI), Seattle Lake Union Spb (LKE), Seattle/Tacoma Intl (SEA) |
How to get the cheapest flight ticket from Ontario to Seattle
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Seattle?
April
The cheapest time of year to fly to Seattle from Ontario is April. Most expensive is July
What is the cheapest day to fly to Seattle?
Wednesday
The cheapest day of the week is typically Wednesday. The most expensive is typically Sunday
When is the cheapest time to fly to Seattle?
at noon
Ontario to Seattle flights are approximately 23% more expensive in the morning than at noon
What is the cheapest airline that flies to Seattle?
Frontier
Frontier, JetBlue, and Major Airline are the most popular carriers operating from Ontario to Seattle
What is the cheapest route?
Ontario - Seattle/Tacoma Intl
Fly from Ontario to Seattle/Tacoma Intl for the best Ontario - Seattle flight prices
ONT
Ontario
SEA
Seattle/Tacoma Intl
When is the cheapest time to book a flight to Seattle?
54 days before
The cheapest time to buy a flight from Ontario to Seattle is approximately 54 days to departure
60
Days before departure
0
Easily compare round-trip flights from Ontario to Seattle
Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Ontario to Seattle by changing tabs
Cheapest
Best
Quickest
Multiple Airlines
Jul 8
ONT
Ontario
2h 49m
SEA
Seattle/Tacoma Intl
Jul 11
SEA
Seattle/Tacoma Intl
5h 05m
1 stop
ONT
Ontario
$161
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Delta
Jul 8
ONT
Ontario
5h 20m
1 stop
SEA
Seattle/Tacoma Intl
Jul 9
SEA
Seattle/Tacoma Intl
5h 05m
1 stop
ONT
Ontario
$171
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Multiple Airlines
Jul 4
ONT
Ontario
5h 20m
1 stop
SEA
Seattle/Tacoma Intl
Jul 11
SEA
Seattle/Tacoma Intl
2h 32m
ONT
Ontario
$166
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Find the cheapest one-way flights from Ontario to Seattle
If you're looking for one-way flights from Ontario to Seattle, view some of our deals below provided by Delta
Cheapest
Best
Quickest
Delta
Jul 11
ONT
Ontario
5h 20m
1 stop
SEA
Seattle/Tacoma Intl
$83
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Multiple Airlines
Aug 28
ONT
Ontario
14h 57m
1 stop
SEA
Seattle/Tacoma Intl
$114
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Delta
Jul 10
ONT
Ontario
5h 20m
1 stop
SEA
Seattle/Tacoma Intl
$88
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Alternative routes for Ontario to Seattle
Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
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