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Cheap Flights from Ontario to Seattle $143.6

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Cheapest Flights from Ontario to Seattle (ONT to SEA)

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 : Are you paying the cheapest or highest price for your ticket to Seattle?
Answer : Prices for this trip tend to change less than other flights in the United States. They can vary from $137 to $733. Prices tend to be lower the further out you book.

Question : How many days should you spend in Seattle?
Answer : The average time spent in Seattle by travelers from Ontario is five days.

Question : Will you do what it takes to get the absolute lowest-cost flight?
Answer : In April, the cheapest day to fly is Wednesday. Being flexible with your travel days garners even more savings during booking.

Question : How often are flights late from LA/Ontario International Airport (ONT) to Seattle-Tacoma International Airport (SEA)?
Answer : Passengers are currently getting to their destination on schedule 85% of the time, which ranks in the top 25% of the world. When there is a delay, it averages about half an hour.

Question : When traveling to Seattle from Ontario, how long will you be in the air?
Answer : On average, the flight time from ONT to SEA is two hours and 37 minutes.

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 shortest 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).

Question : How many departure times from LA/Ontario International Airport (ONT) to Seattle-Tacoma International Airport (SEA) are there on a daily basis?
Answer : Each day is different, but on average, you can expect to see two available departure times. Compared to the average route departing the United States with five flight times, you won't have as many choices as most.