Ontario International Airport
Ontario · US
ONT See airport pageCheap Flights from Ontario (ONT) to Seattle (SEA)
Track fares, compare route details, and get alerted when prices from Ontario to Seattle drop again.
Typical travel time: 2h 20m
Route pattern: Usually direct
We currently track this route between Ontario (ONT) and Seattle (SEA).
This trip covers about 1,540 km and usually takes around 2h 20m.
We are still collecting live fare checks for this route. Start a free alert and we will email you as soon as prices appear.
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What we know about this route
14 · ONT
What we know about this route
Route distance
1,540 km
Typical travel time
2h 20m
Route pattern
Usually direct
Last checked
—
Popular airlines on this route
AS
Recent fares we tracked
Recent fares we tracked
No live fares tracked yet
We are still collecting live fare checks for this route. Start a free alert and we will email you as soon as prices appear.
Airport information
Airport information
Seattle–Tacoma International Airport
Seattle · US
SEA See airport page
Frequently Asked Questions
Frequently Asked Questions
How long does the trip from Ontario to Seattle usually take?
This route typically takes around 2h 20m.
How far is Ontario to Seattle by air?
The air distance between Ontario and Seattle is about 1,540 km.
Are there direct flights from Ontario to Seattle?
This route is usually flown direct.
Which airport do you leave from when flying from Ontario to Seattle?
Flights on this route usually depart from Ontario International Airport (ONT).
Which airport do you arrive at when flying from Ontario to Seattle?
Flights on this route usually arrive at Seattle–Tacoma International Airport (SEA).
Which airlines have appeared on this route?
Airlines we have seen on this route include AS.
How do alerts work for Ontario to Seattle?
Create a free alert and we will email you when we detect a cheaper fare for this route.
Can I book directly with the airline?
Yes. We surface the route insights here, and when a good fare appears you book directly with the airline or travel provider.