Cheap flights from Seattle (SEA) to Ontario (ON)

Flight FAQs

From Seattle to Ontario

Are flight prices decreasing from Seattle to Ontario due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Seattle and Ontario for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Seattle/Tacoma Intl to Ontario to control the spread of COVID-19?

Alaska Airlines and Delta are some of the many airlines that have implemented additional safety measures to control the spread of COVID-19. New policies for travelers booking flights from Seattle/Tacoma Intl to Ontario include masks being provided and required on board, daily cleaning and sanitization, use of HEPA filters, pre-flight testing for antibodies and symptoms, and socially distanced seating (for a limited time). Keep in mind that policies will vary by airline.

Which airlines flying from Seattle/Tacoma Intl to Ontario have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like Air Canada, United Airlines, and Delta flying from Seattle/Tacoma Intl to Ontario have implemented new flexible cancellation policies.

Can I find flights from Seattle to Ontario for under $200 on Cheapflights?

Yes, there are multiple flights from Seattle to Ontario for under $200. The cheapest flight booked recently is on Air Canada for just $188, but on average you can expect to pay $257.

Are there nonstop flights from Seattle to Ontario for under $300 on Cheapflights?

Cheapflights has at least 8 direct flights from Seattle to Ontario under $300. A good price for a nonstop flight from Seattle to Ontario is less than $974.

Are there last-minute flights available from Seattle to Ontario for under $400?

There are currently 20+ open flights from Seattle to Ontario within the next 7 days for less than $400.

What are the most popular airlines that fly from Seattle to Ontario?

The most popular airlines flying from Seattle to Ontario are Interjet, Major Airline and American Airlines. Something to consider prior to booking your flight.

What are the most popular routes from Seattle to Ontario?

Most travelers choose Seattle/Tacoma Intl - Toronto Pearson Intl, Seattle/Tacoma Intl - Toronto Hamilton or Seattle/Tacoma Intl - Ottawa when deciding on the best route from Seattle to Ontario.

What are the cheapest Flights from Seattle to Ontario?

Looking at all options, your cheapest flight can be booked for $243. While the most popular route (Seattle/Tacoma Intl - Toronto Pearson Intl) can be booked for $255 on average our data indicates $602 when flying from Seattle to Ontario

How long is the flight from Seattle to Ontario?

For as low as $287, United Airlines can have you in Ontario from Seattle in 4h 47m. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What are the cheapest airlines flying from Seattle to Ontario round-trip?

Our cheapest airline available from Seattle to Ontario is Air Canada. Our recent data shows that you can find tickets from as low as $188 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $266 and $274 round-trip.

What are the cheapest airlines to fly from Seattle to Ontario one-way?

$118 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Air Canada and United Airlines, with prices starting from $120 and $146, respectively.