Cheap flights from Seattle (SEA) to Ontario from $90
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 6/18. 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?
Users have found that booking a flight from Seattle to Region of Ontario at least 27 days early can save you up to 88% on average compared to booking a flight this week. If booking 27 days before your flight isn’t an option for you, users have found flights from Seattle to Region of Ontario for as little as $713 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 $752 for flights departing within the next 3 days.
What is the cheapest month to fly from Seattle to Region of Ontario?
Our data shows that January tends to be the cheapest month to fly to Region of Ontario from Seattle. Users have commonly found prices around $604 for the month, but tickets can be as low as $198. Due to multiple factors, prepare for potentially higher prices in July.
When is the cheapest time to fly from Seattle to Region of Ontario (SEA - ON)?
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Region of Ontario as you normally would.
Cheap Alaska Airlines flights from Seattle to Ontario
Explore cheap flight options specifically provided by Alaska 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 2,749,864 searches. Data last updated May 8, 2024.
Take a look at some of the lowest-priced Alaska Airlines flights heading 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 2,749,864 searches. Data last updated May 8, 2024.
Some of the best deals we've found on Air Canada flights traveling 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 2,749,864 searches. Prices were last updated on May 8, 2024.
Scroll through some of the best deals on flights from Seattle to Ontario in 2024. Check back in a little while for more flight options.
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 2,749,864 searches. Data last updated May 8, 2024.
Scroll through some of the best deals on flights from Seattle to Ontario in 2024. Check back in a little while for more flight options.
Non-stop 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 2,749,864 searches. Data last updated May 8, 2024.
For a shorter flight, select one of these non-stop flights from Seattle to Ontario. Those looking to potentially save on 1 or 2-stop flights from Seattle to Ontario should utilize the search form at the the top of the 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 2,749,864 searches. Data last updated May 8, 2024.
Check out these flights departing soon from Seattle to Ontario. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
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 2,749,864 searches. Data last updated May 8, 2024.
If you're seeking multiple options on one-way flights from Seattle to Ontario, be sure to check out these deals, which are updated often. Users in need of a round-trip flight from Seattle to Ontario instead should update the search form at the top of page.
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 2,749,864 searches. Data last updated May 8, 2024.
Fly from
Fly to
Budget
$233 - $418
Route
Depart
Return
Price
Seattle/Tacoma IntlToronto Pearson Intl
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Tue 6/4
1 stop18h 00m
Toronto Pearson Intl
Tue 6/11
1 stop15h 12m
Seattle/Tacoma IntlToronto Pearson Intl
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Thu 6/6
1 stop18h 07m
Toronto Pearson Intl
Thu 6/13
1 stop15h 12m
Seattle/Tacoma IntlToronto Pearson Intl
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Sat 6/1
1 stop12h 46m
Toronto Pearson Intl
Tue 6/4
1 stop15h 12m
Seattle/Tacoma IntlToronto Pearson Intl
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Sat 6/1
1 stop18h 00m
Toronto Pearson Intl
Tue 6/4
1 stop15h 12m
Seattle/Tacoma IntlToronto Kitchener-Waterloo
SEA - YKF
SEAYKF
Seattle/Tacoma Intl
Fri 8/2
1 stop8h 02m
Toronto Kitchener-Waterloo
Wed 8/14
1 stop9h 41m
Seattle/Tacoma IntlToronto Pearson Intl
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Mon 5/27
Nonstop4h 40m
Toronto Pearson Intl
Mon 6/10
Nonstop5h 15m
Seattle/Tacoma IntlToronto Pearson Intl
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Sat 8/3
Nonstop4h 40m
Toronto Pearson Intl
Sat 8/17
1 stop9h 25m
Seattle/Tacoma IntlToronto Pearson Intl
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Sat 8/24
Nonstop4h 40m
Toronto Pearson Intl
Sun 9/8
1 stop8h 29m
Seattle/Tacoma IntlToronto Pearson Intl
SEA - YYZ
SEAYYZ
Seattle/Tacoma Intl
Sun 5/26
1 stop6h 39m
Toronto Pearson Intl
Sun 6/9
1 stop8h 50m
No data available for this route at this time. Please check back soon.
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 May 8, 2024.
Read through reviews of airlines operating flights from Seattle to Ontario, such as Alaska Airlines, Air Canada and United Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Boarding
Comfort
Crew
Entertainment
Overall
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.
Food
Boarding
Comfort
Crew
Entertainment
Overall
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.
Food
Boarding
Comfort
Crew
Entertainment
Overall
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.
Food
Boarding
Comfort
Crew
Entertainment
Overall
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.
Food
Boarding
Comfort
Crew
Entertainment
Overall
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.
Food
Boarding
Comfort
Crew
Entertainment
Overall
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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 6 airlines flying from Seattle to Ontario
Discover the top 6 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 2,749,864 searches. Data last updated May 8, 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 May 8, 2024.
| 1%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 72%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
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Seattle to Ontario?
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!
Why should you use Cheapflights to find cheap flight tickets from Seattle to Ontario?
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!
Can Cheapflights find flights from Seattle to Ontario with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Seattle to Ontario, users can toggle the no change fees filter when performing a flight search.
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!