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ONT (Ontario) to SEA (Seattle) Flights $143.6

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Cheap ONT to SEA Flights

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from Ontario to Seattle (ONT to SEA)

Question : How much should a trip from Ontario (ONT) to Seattle (SEA) cost?
Answer : Ranging anywhere from $167 to $997, prices for ONT to SEA do fluctuate a lot more than the majority of routes in the United States. The further out you book a route, the more likely you are to save.

Question : Who's offering the cheapest round-trip flight to Seattle-Tacoma International Airport (SEA) over the coming months?
Answer : Prices are hitting as high as $997 over the next three months when flying to SEA from ONT. Check out Alaska Airlines, as they have been booking customers at just $167.

Question : About how long is the flight from Ontario to Seattle?
Answer : Flying from ONT to SEA typically takes about two hours and 37 minutes.

Question : Should you take that vacation to Seattle in the next 30 days?
Answer : As of Jun 19th, the cheapest day to fly from Ontario to Seattle is Jun 20th. Tickets are currently being sold for $167, which is 42% below the average price for this route.

Question : Is there a day of the week that has more departure times to choose from than other days?
Answer : With two total flight time options, Saturday provides the most flexibility from ONT to SEA. Note that the day with the most flight time options for all flights departing from the United States is Sunday with 5,738.

Question : How often is the Ontario International Airport (ONT) to Seattle-Tacoma International Airport (SEA) route delayed?
Answer : This particular route gets passengers to Seattle-Tacoma International Airport on time 85% of the time, which puts it in the top 25% of the world. If a flight is delayed, though, expect an average of 25 minutes added to your flight time.

Question : If speed is all that matters, how can you get from ONT to SEA as quickly as possible?
Answer : If you're able to take the fastest direct flight (which is offered by Alaska Airlines), you will be able to leave ONT at 11:00 AM PDT and get to SEA at 1:36 PM PDT (two hours and 36 minutes).