Cheap flights from Seattle to Ontario from C$ 108
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
How far in advance should I book a flight from Seattle to Region of Ontario?
When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 27 days in advance, which can save you up to 88% on flights from Seattle to Region of Ontario compared to booking the week you need them. Waiting 27 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at C$ 976. For sooner than that we have options available in the next 3 days from C$ 1,029.
What is the cheapest month to fly from Seattle to Region of Ontario?
November is one of the best times of the year to fly to Region of Ontario from Seattle. Prices for November average C$ 820 per person but you can even find prices for as low as C$ 293. The most expensive prices can be found in the month of December. Opting for a November flight can save you 5% on your journey compared to booking in December
What is the cheapest time of day to fly from SEA to ON?
When flying from Seattle to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Cheap United Airlines flights from Seattle to Ontario
Explore cheap flight options specifically provided by United Airlines for the route between Seattle and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 426,053 searches. Data last updated 30 May 2024.
Find some of the cheapest United Airlines flights travelling from Seattle to Ontario. Come back soon if you're not finding the exact deal you're looking for.
Cheap Air Canada flights from Seattle to Ontario
Explore cheap flight options specifically provided by Air Canada for the route between Seattle and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 426,053 searches. Data last updated 30 May 2024.
Browse through some of the cheapest Air Canada flights travelling from Seattle to Ontario. Ensure the flight price, dates, time, and airline match your criteria before you book.
Cheap Seattle to Ontario flights in May & June 2024
Find cheap flight options from Seattle to Ontario specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 426,053 searches. Prices were last updated on 30 May 2024.
The lowest fares we've come across on flights travelling from Seattle to Ontario in May and June 2024. Check back soon for alternative fares.
Seattle to Ontario 2024 flight deals
Discover exclusive flight deals for travel between Seattle and Ontario in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 426,053 searches. Data last updated 30 May 2024.
The lowest fares we've come across on flights travelling from Seattle to Ontario in May and June 2024. Check back soon for alternative fares.
Direct flights to Ontario from Seattle
Discover non-stop flight options from Seattle to Ontario. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 426,053 searches. Data last updated 30 May 2024.
If you're seeking options on non-stop flights from Seattle to Ontario, check out these fares. If you're looking for other options for flights from Seattle to Ontario, make sure to update the search form at the top of page.
Seattle to Ontario flights leaving soon
Find last-minute flight options from Seattle to Ontario for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 426,053 searches. Data last updated 30 May 2024.
Users seeking a last-minute flight from Seattle to Ontario should consider booking one of these fares. Tip: verify your flight details before completing your reservation.
One-way flights to Ontario from Seattle
Search for one-way flight options from Seattle to Ontario. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 426,053 searches. Data last updated 30 May 2024.
Users in need of a one-way flight from Seattle to Ontario can choose from these deals. Users can also find round-trip Seattle to Ontario flights by using the search form above.
Find flights from Seattle to Ontario within your budget
Customize your flight search to find flights from Seattle to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 426,053 searches. Data last updated 30 May 2024.
Fly from
Fly to
Budget
C$ 364 - C$ 785
Route
Depart
Return
Price
Seattle/Tacoma IntlToronto Pearson Intl
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Thu 12/9
1 stop14h 00m
Toronto Pearson Intl
Tue 24/9
1 stop17h 28m
Seattle/Tacoma IntlToronto Pearson Intl
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Tue 11/6
1 stop19h 11m
Toronto Pearson Intl
Sat 15/6
1 stop15h 12m
Seattle/Tacoma IntlToronto Pearson Intl
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Sun 1/9
2 stops12h 56m
Toronto Pearson Intl
Sat 7/9
2 stops11h 21m
Seattle/Tacoma IntlToronto Pearson Intl
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Sun 1/9
Nonstop4h 30m
Toronto Pearson Intl
Sat 7/9
Nonstop5h 22m
Seattle/Tacoma IntlToronto Pearson Intl
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Tue 12/11
Nonstop4h 41m
Toronto Pearson Intl
Sat 16/11
Nonstop5h 28m
Seattle/Tacoma IntlToronto Pearson Intl
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Wed 13/11
1 stop8h 17m
Toronto Pearson Intl
Sat 16/11
2 stops15h 52m
Seattle/Tacoma IntlMontreal Pierre Elliott Trudeau Intl
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Thu 20/6
1 stop7h 42m
Montreal Pierre Elliott Trudeau Intl
Mon 8/7
1 stop26h 27m
Seattle/Tacoma IntlToronto Pearson Intl
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Fri 9/8
1 stop8h 04m
Toronto Pearson Intl
Wed 21/8
1 stop7h 21m
Seattle/Tacoma IntlMontreal Pierre Elliott Trudeau Intl
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Mon 12/8
1 stop11h 38m
Montreal Pierre Elliott Trudeau Intl
Fri 16/8
1 stop15h 10m
No data available for this route at this time. Please check back soon.
Best time to book a flight from Seattle to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Seattle with our price prediction graph.
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated 30 May 2024.
Read through reviews of airlines operating flights from Seattle to Ontario, such as United Airlines, Air Canada and WestJet. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
Entertainment
Boarding
Overall
Crew
Food
Reviews
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
Comfort
Entertainment
Boarding
Overall
Crew
Food
Reviews
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
Comfort
Entertainment
Boarding
Overall
Crew
Food
Reviews
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
Comfort
Entertainment
Boarding
Overall
Crew
Food
Reviews
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
Comfort
Entertainment
Boarding
Overall
Crew
Food
Reviews
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
Comfort
Entertainment
Boarding
Overall
Crew
Food
Reviews
I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.
Related info for your journey
Find useful and relevant information for your journey from Seattle to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Seattle to OntarioSee prices for flight routes from nearby airports that may be better suited for you.
See prices for flight routes from nearby airports that may be better suited for you.
Top 3 airlines flying from Seattle to Ontario
Discover the top 3 airlines that operate flights from Seattle to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 426,053 searches. Data last updated 30 May 2024.
Search flights from Seattle to Ontario by cabin class
Find flights from Seattle to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Hourly flight availability from Seattle to Ontario
Find hourly flight availability from Seattle to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 May 2024.
| 17%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 56%of flight departures | Morning6 am to noon |
| 0%of flight departures | AfternoonNoon to 6 pm |
| 27%of flight departures | Evening6 pm to midnight |
Book a flight to one of these trending destinations
User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Fly with Cheapflights
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How does Cheapflights help users find flights from Seattle to Ontario?
Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Seattle to Ontario. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.
Why should you use Cheapflights to find cheap flight tickets from Seattle to Ontario?
Cheapflights simply makes it quick and affordable to book flights from Seattle to Ontario by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from Seattle to Ontario with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Ontario flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Seattle to Ontario become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!