Cheap flights from Seattle to Ontario (SEA - ONT) from $39

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Ontario. Check prices with Cheapflights to find a great deal for your trip.

Users have found that booking a flight from Seattle to Ontario at least 61 days early can save you up to 96% on average compared to booking a flight this week. If booking 61 days before your flight isn’t an option for you, users have found flights from Seattle to Ontario for as little as $377 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $538 for flights departing within the next 3 days.

Flights from Seattle to Ontario lean towards being more expensive in June. Prices are generally better when you fly from Seattle to Ontario in January, with the cheapest ticket starting at $158.

A simple way to save on the total cost of your ticket is to fly from Seattle to Ontario in the morning. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight at noon.

Booking a flight from Seattle/Tacoma Intl (SEA) to Ontario (ONT) is your only option if you wish to fly from Seattle to Ontario. On a typical day, there are 13 flights from Seattle/Tacoma Intl to Ontario, all of which are around 2h 28m for a nonstop flight. You can also purchase a plane ticket from 7 airlines when you book a flight from Seattle/Tacoma Intl to Ontario.

Yes, there are multiple flights from Seattle to Ontario for under $100. The cheapest flight booked recently is on Frontier for just $78, but on average you can expect to pay $91.

Cheapflights has at least 20 direct flights from Seattle to Ontario under $100. A good price for a nonstop flight from Seattle to Ontario is less than $144.

There are currently 20+ open flights from Seattle to Ontario within the next 7 days for less than $100.

You can find nonstop flights on the following days: Sunday, Monday, Tuesday, Thursday, Friday, Saturday.

This flight path from Seattle/Tacoma Intl to Ontario was viewed by 23 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

Travelers can expect 21 flights from Seattle to Ontario on average per day.
Early Morning (Midnight to 6am) - 5% of flight departures
Morning (6am - Noon) - 10% of flight departures
Afternoon (Noon - 6pm) - 29% of flight departures
Evening (6pm - Midnight) - 57% of flight departures

A quick flight from Seattle to Ontario can take about 2h 30m. Frontier provides one of the quickest options available for as low as $78. The distance from Seattle to Ontario is about 962 mi. Both multi-stop and nonstop flights can be found to your destination and back.

Our cheapest airline available from Seattle to Ontario is Frontier. Our recent data shows that you can find tickets from as low as $78 on this airline. An additional option worth looking into is Alaska Airlines, starting at $108. Frontier is priced at 71% lower than the current average price of a flight leaving 3 months from now.

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $39. Users have also found prices from $57 and $79 on Alaska Airlines and American Airlines, respectively.

Undisclosed Carrier, American Airlines and Alaska Airlines are the most popular airlines when flying from Seattle to Ontario.

Before booking your flight to Ontario from Seattle, check out the most reliable airlines to get you to your destination on time: SkyWest Airlines (85%), Delta (80%), KLM( 77%).

Looking at all options, your cheapest flight can be booked for $69. While the most popular route (Seattle/Tacoma Intl - Ontario) can be booked for $83 on average our data indicates $146 when flying from Seattle to Ontario.

SEA stands for Seattle/Tacoma Intl Airport, while ONT stands for Ontario Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ontario from Seattle today with Cheapflights!

Cheapflights helps you find that perfect flight to Ontario from Seattle by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Need flexible booking options for your flight to Ontario from Seattle? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Yes, Cheapflights has a feature called Price Alert, which essentially offers users the ability to be notified when flight prices change. Track prices for your flight to Ontario from Seattle today and book when you’re ready!