$28+ Cheap flights from Seattle to Ontario (SEA - ONT)

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 6 flights from Seattle/Tacoma Intl to Ontario, all of which are around 2h 31m for a nonstop flight. You can also purchase a plane ticket from 4 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 $56, but on average you can expect to pay $133.

Cheapflights has at least 4 direct flights from Seattle to Ontario under $100. A good price for a nonstop flight from Seattle to Ontario is less than $101.

There are currently 7+ 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 71 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

Travelers can expect 29 flights from Seattle to Ontario on average per day.
Early Morning (Midnight to 6am) - 7% of flight departures
Morning (6am - Noon) - 41% of flight departures
Afternoon (Noon - 6pm) - 38% of flight departures
Evening (6pm - Midnight) - 14% of flight departures

A quick flight from Seattle to Ontario can take about 2h 28m. Frontier provides one of the quickest options available for as low as $56. The distance from Seattle to Ontario is about 962 mi. Generally, flights for this route are nonstop.

Our cheapest airline available from Seattle to Ontario is Frontier. Our recent data shows that you can find tickets from as low as $56 on this airline. Additional options worth looking into are Delta and Alaska Airlines, starting at $117 and $137 round-trip. Frontier is priced at 72% 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 $28. Users have also found prices from $59 and $61 on Delta and Alaska Airlines, respectively.

Before booking your flight to Ontario from Seattle, check out the most reliable airlines to get you to your destination on time: Air France (100%), Horizon Air (100%), Aeromexico( 100%).

Looking at all options, your cheapest flight can be booked for $47. While the most popular route (Seattle/Tacoma Intl - Ontario) can be booked for $56 on average our data indicates $251 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.

The amount of baggage you can bring on your Seattle to Ontario flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Yes, Cheapflights allows you to browse and filter Seattle to Ontario flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

Yes. In addition to deals on Seattle to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Ontario.

Yes. Cheapflights offers flight deals from Seattle to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Many airlines flying from Seattle to Ontario offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Yes, you can often find last-minute deals on Seattle to Ontario flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

The Seattle to Ontario flight deals you see on this page were last updated on 10/31.

Currently, September is the cheapest month in which you can book a flight from Seattle to Ontario (average of $236). Flying from Seattle to Ontario in December is currently the most expensive (average of $288). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.