HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from Seattle (SEA) to Ontario from $98

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 9/17. 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.
SEA — YYZ
Jun 18 — Jun 251
From?
To?
Tue 6/18
Tue 6/25
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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 103% 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 $734 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 $810 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 November tends to be the cheapest month to fly to Region of Ontario from Seattle. Users have commonly found prices around $591 for the month, but tickets can be as low as $213. Due to multiple factors, prepare for potentially higher prices in December.

What is the cheapest time of day to fly from SEA to 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 Seattle to Ontario flights in June & July 2024

Find cheap flight options from Seattle to Ontario specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,214,720 searches. Prices were last updated on June 13, 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.
Mon 7/89:49 pmSEA - YYZ
1 stop29h 46mMultiple Airlines
Sun 7/147:30 amYYZ - SEA
1 stop10h 16mMultiple Airlines
Deal found 6/12$287
Thu 7/115:15 pmSEA - YYZ
1 stop10h 27mMultiple Airlines
Thu 7/1812:00 pmYYZ - SEA
2 stops15h 35mMultiple Airlines
Deal found 6/13$291
Mon 7/89:49 pmSEA - YYZ
1 stop29h 46mMultiple Airlines
Thu 7/1111:59 amYYZ - SEA
2 stops15h 36mMultiple Airlines
Deal found 6/12$292
Sat 7/136:29 pmSEA - YYZ
1 stop26h 30mMultiple Airlines
Fri 7/198:00 amYYZ - SEA
2 stops16h 38mMultiple Airlines
Deal found 6/12$293
Thu 7/115:15 pmSEA - YYZ
1 stop10h 27mMultiple Airlines
Thu 7/1811:00 amYYZ - SEA
1 stop9h 22mMultiple Airlines
Deal found 6/13$301
Tue 7/99:49 amSEA - YYZ
1 stop17h 46mMultiple Airlines
Fri 7/128:00 pmYYZ - SEA
1 stop19h 26mMultiple Airlines
Deal found 6/12$304
Tue 7/99:49 amSEA - YYZ
1 stop17h 46mMultiple Airlines
Sun 7/147:30 amYYZ - SEA
1 stop10h 16mMultiple Airlines
Deal found 6/12$307
Tue 7/2310:10 pmSEA - YYZ
3 stops28h 35mMultiple Airlines
Tue 8/610:25 pmYYZ - SEA
2 stops20h 50mMultiple Airlines
Deal found 6/11$310
Thu 7/256:22 pmSEA - YYZ
1 stop9h 21mMultiple Airlines
Mon 7/2910:25 pmYYZ - SEA
2 stops20h 50mMultiple Airlines
Deal found 6/13$320

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 3,214,720 searches. Data last updated June 13, 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.
Tue 9/176:37 pmSEA - YYZ
1 stop8h 58mMultiple Airlines
Tue 9/248:00 pmYYZ - SEA
1 stop17h 48mMultiple Airlines
Deal found 6/11$227
Tue 9/176:37 pmSEA - YYZ
1 stop8h 58mMultiple Airlines
Tue 9/248:00 pmYYZ - SEA
1 stop17h 48mMultiple Airlines
Deal found 6/13$232
Fri 9/69:14 amSEA - YYZ
2 stops17h 52mMultiple Airlines
Tue 9/1012:20 pmYYZ - SEA
1 stop9h 41mMultiple Airlines
Deal found 6/13$256
Mon 8/197:51 pmSEA - YYZ
1 stop23h 54mMultiple Airlines
Tue 8/2711:15 amYYZ - SEA
1 stop14h 16mMultiple Airlines
Deal found 6/12$259
Wed 9/1111:30 amSEA - YYZ
1 stop16h 13mMultiple Airlines
Sat 9/1412:20 pmYYZ - SEA
1 stop9h 41mMultiple Airlines
Deal found 6/11$263
Sat 9/2811:30 amSEA - YYZ
1 stop16h 05mMultiple Airlines
Sat 10/510:50 amYYZ - SEA
1 stop11h 11mMultiple Airlines
Deal found 6/12$274
Mon 8/129:45 pmSEA - YYZ
1 stop23h 00mMultiple Airlines
Wed 8/2811:15 amYYZ - SEA
1 stop14h 16mMultiple Airlines
Deal found 6/12$275
Wed 10/211:30 amSEA - YYZ
1 stop16h 07mMultiple Airlines
Wed 10/910:50 amYYZ - SEA
1 stop11h 11mMultiple Airlines
Deal found 6/11$281
Wed 9/119:14 amSEA - YYZ
2 stops17h 52mMultiple Airlines
Sat 9/1412:20 pmYYZ - SEA
1 stop9h 41mMultiple Airlines
Deal found 6/11$282

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 3,214,720 searches. Data last updated June 13, 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.
Fri 6/2110:03 pmSEA - YYZ
2 stops29h 39mMultiple Airlines
Wed 8/2811:15 amYYZ - SEA
1 stop14h 16mMultiple Airlines
Deal found 6/13$352
Wed 6/197:00 amSEA - YYZ
2 stops21h 20mMultiple Airlines
Wed 8/2811:15 amYYZ - SEA
1 stop14h 16mMultiple Airlines
Deal found 6/13$364
Tue 6/187:00 amSEA - YYZ
2 stops38h 05mMultiple Airlines
Wed 8/2811:15 amYYZ - SEA
1 stop14h 16mMultiple Airlines
Deal found 6/13$365
Wed 6/197:00 amSEA - YYZ
2 stops21h 20mMultiple Airlines
Tue 9/311:15 amYYZ - SEA
1 stop23h 59mMultiple Airlines
Deal found 6/13$373
Sun 6/238:19 amSEA - YYZ
2 stops19h 18mMultiple Airlines
Wed 8/2811:15 amYYZ - SEA
1 stop14h 16mMultiple Airlines
Deal found 6/13$375
Sun 6/238:19 amSEA - YYZ
1 stop18h 16mMultiple Airlines
Wed 8/2811:15 amYYZ - SEA
1 stop14h 16mMultiple Airlines
Deal found 6/13$377
Tue 6/187:00 amSEA - YYZ
2 stops21h 20mMultiple Airlines
Tue 9/311:15 amYYZ - SEA
1 stop23h 59mMultiple Airlines
Deal found 6/13$381
Thu 6/206:50 pmSEA - YYZ
1 stop13h 55mMultiple Airlines
Wed 8/2811:15 amYYZ - SEA
1 stop14h 16mMultiple Airlines
Deal found 6/13$397
Wed 6/1910:59 pmSEA - YYZ
1 stop12h 46mMultiple Airlines
Wed 8/2811:15 amYYZ - SEA
1 stop14h 16mMultiple Airlines
Deal found 6/13$424

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 3,214,720 searches. Data last updated June 13, 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.
Tue 9/176:37 pmSEA - YYZ
1 stop8h 58mMultiple Airlines
Deal found 6/12$98
Sat 9/2811:30 amSEA - YYZ
1 stop16h 05mMultiple Airlines
Deal found 6/13$99
Mon 9/167:51 pmSEA - YYZ
1 stop23h 52mMultiple Airlines
Deal found 6/12$100
Mon 9/237:51 pmSEA - YYZ
1 stop23h 52mMultiple Airlines
Deal found 6/12$106
Sun 9/152:21 pmSEA - YYZ
1 stop13h 14mMultiple Airlines
Deal found 6/12$110
Tue 9/249:14 amSEA - YYZ
1 stop11h 42mMultiple Airlines
Deal found 6/12$113
Mon 8/197:51 pmSEA - YYZ
1 stop23h 54mMultiple Airlines
Deal found 6/12$117
Thu 9/199:14 amSEA - YYZ
2 stops17h 36mMultiple Airlines
Deal found 6/12$118
Tue 9/179:14 amSEA - YYZ
2 stops17h 56mMultiple Airlines
Deal found 6/12$119

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 3,214,720 searches. Data last updated June 13, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$227 - $492

Route

Depart

Return

Price

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 9/17

1 stop8h 58m

Toronto Pearson Intl

Tue 9/24

1 stop17h 48m

$227

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 9/17

1 stop8h 58m

Toronto Pearson Intl

Tue 9/24

1 stop17h 48m

$232

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 8/22

1 stop15h 01m

Toronto Pearson Intl

Sun 8/25

1 stop9h 46m

$332

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 8/20

Nonstop4h 30m

Toronto Pearson Intl

Sat 9/14

Nonstop5h 22m

$387

Seattle/Tacoma IntlToronto Pearson Intl

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 8/19

1 stop8h 04m

Toronto Pearson Intl

Wed 9/11

1 stop7h 35m

$411

Seattle/Tacoma IntlMontreal Pierre Elliott Trudeau Intl

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 8/1

1 stop7h 46m

Montreal Pierre Elliott Trudeau Intl

Mon 8/5

1 stop27h 36m

$414

Seattle/Tacoma IntlOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sun 6/30

1 stop8h 14m

Ottawa

Mon 7/15

1 stop17h 45m

$428

Seattle/Tacoma IntlMontreal Pierre Elliott Trudeau Intl

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 9/6

1 stop12h 40m

Montreal Pierre Elliott Trudeau Intl

Fri 9/13

2 stops15h 26m

$465

Seattle/Tacoma IntlMontreal Pierre Elliott Trudeau Intl

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 10/19

2 stops11h 54m

Montreal Pierre Elliott Trudeau Intl

Mon 10/28

Nonstop5h 59m

$492

Flights are sorted by cheapest first

Deals found on 6/11

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.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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 June 13, 2024.
Read through reviews of airlines operating flights from Seattle to Ontario, such as WestJet, Alaska Airlines and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,272 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.3

Food

7.3

Comfort

7.9

Crew

8.6

Reviews

1 / 10

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.

Alaska Airlines
8.1
Very good
9,272 reviews
Alaska Airlines
8.1
Very good
9,272 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.3

Food

7.3

Comfort

7.9

Crew

8.6

Reviews

1 / 10

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.

Delta
8.0
Very good
10,000 reviews
Alaska Airlines
8.1
Very good
9,272 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.3

Food

7.3

Comfort

7.9

Crew

8.6

Reviews

1 / 10

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.

WestJet
7.5
Good
2,824 reviews
Alaska Airlines
8.1
Very good
9,272 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.3

Food

7.3

Comfort

7.9

Crew

8.6

Reviews

1 / 10

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.

United Airlines
7.4
Good
10,000 reviews
Alaska Airlines
8.1
Very good
9,272 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.3

Food

7.3

Comfort

7.9

Crew

8.6

Reviews

1 / 10

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.

American Airlines
7.3
Good
10,000 reviews
Alaska Airlines
8.1
Very good
9,272 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.3

Food

7.3

Comfort

7.9

Crew

8.6

Reviews

1 / 10

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.

  • What airport do you fly from for flights from Seattle to Ontario?

    For a flight from Seattle to Ontario, you will be flying from Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 11.4 mi from the center of the city.

  • Can I find flights from Seattle to Region of Ontario for under $300 on Cheapflights?

    Yes, there are multiple flights from Seattle to Region of Ontario for under $300. The cheapest flight booked recently is on Multiple Airlines for just $227, but on average you can expect to pay $281.

  • Are there nonstop flights from Seattle to Region of Ontario for under $400 on Cheapflights?

    Cheapflights has at least 20 direct flights from Seattle to Region of Ontario under $400. A good price for a nonstop flight from Seattle to Region of Ontario is less than $436.

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

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

  • What days are nonstop flights available from Seattle to Region of Ontario?

    Days when nonstop flights are available for this flight are: Monday.

  • How many flights depart from Seattle to Region of Ontario on average per day?

    Travelers can expect 2 flights from Seattle to Region of Ontario on average per day.
    Evening (6pm - Midnight) - 100% of flight departures

  • What are the most popular routes from Seattle to Region of Ontario?

    The most popular route from Seattle to Region of Ontario is Seattle/Tacoma Intl - Toronto Pearson Intl. You may also consider Seattle/Tacoma Intl - Montreal Pierre Elliott Trudeau Intl or Seattle/Tacoma Intl - Toronto Kitchener-Waterloo.

  • What are the most reliable airlines from Seattle to Region of Ontario?

    The top 3 most reliable airlines when flying from Seattle to Region of Ontario are Alaska Airlines (82%), Air Canada (68%) and United Airlines (64%).

  • What are the cheapest flights from Seattle to Region of Ontario?

    Looking for the cheapest flight from Seattle to Region of Ontario? While on average our users pay $859, our data indicates the cheapest price to be $169. The most popular route (Seattle/Tacoma Intl - Toronto Pearson Intl), is priced around $227.

  • What does SEA to YYZ mean?

    This is defined as Seattle/Tacoma Intl Airport (SEA) and Toronto Pearson Intl Airport (YYZ). Codes like Toronto Pearson Intl Airport are often used to just call airports uniquely. Ottawa Airport (YOW), Hamilton Airport (YHM), Toronto Island Airport (YTZ), Toronto Kitchener-Waterloo Airport (YKF), London Airport (YXU) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from Seattle to Ontario that include extra baggage allowance?

    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.

  • Can I find deals on flights from Seattle to Ontario with specific airlines?

    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.

  • Can I find deals for flights from Seattle to Ontario that include hotel bookings?

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

  • How can I find direct flights from Seattle to Ontario?

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

  • Can I find deals for business class 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.

  • Can I find deals for flights from Seattle to Ontario that allow pets onboard?

    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.

  • Can I find deals on last-minute flights from Seattle to Ontario?

    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.

  • How recently were the Seattle to Region of Ontario flight deals updated?

    The Seattle to Region of Ontario flight deals you see on this page were last updated on 6/13.

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

    The most popular airlines flying from Seattle to Region of Ontario are American Airlines, Air Canada and Alaska Airlines. Something to consider prior to booking your flight.

  • What is the cheapest month to book a flight from Seattle to Region of Ontario?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Region of Ontario (average of $237). Flying from Seattle to Region of Ontario in July is currently the most expensive (average of $380). 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.

See more FAQs

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 Ontario
See prices for flight routes from nearby airports that may be better suited for you.

Seattle to Pearson Intl flights
Seattle to Calgary flights
Seattle to Vancouver Intl flights
Seattle to Pierre Elliott Trudeau Intl flights
Portland to Vancouver Intl flights
Seattle to Kitchener-Waterloo flights
Portland to Calgary flights
Portland to Pearson Intl flights
Seattle to Hamilton flights
Seattle to Toronto Island flights
Seattle to Edmonton flights
Seattle to Québec City flights
Portland to Pierre Elliott Trudeau Intl flights
Seattle to Victoria flights
Seattle to Ottawa flights
Seattle to Winnipeg flights
Spokane to Vancouver Intl flights
Seattle to Kelowna flights
Spokane to Pearson Intl flights
Portland to Toronto Island flights
Portland to Halifax flights
Seattle to Halifax flights
Portland to Québec City flights
Portland to Ottawa flights
Portland to Victoria flights
Portland to Edmonton flights
Seattle to Charlottetown flights
Portland to Winnipeg flights
Portland to Regina flights
Pasco to Vancouver Intl flights
Pasco to Pearson Intl flights
Seattle to Yellowknife flights
Portland to Kelowna flights
Seattle to St. John's flights
Seattle to Timmins flights
Seattle to Saskatoon flights
Spokane to Calgary flights
Portland to Saskatoon flights
Seattle to London flights
Portland to Comox flights
Spokane to Edmonton flights
Seattle to Regina flights
Seattle to Comox flights
Seattle to Nanaimo flights
Seattle to Kamloops flights
Portland to St. John's flights
Bellingham to Kelowna flights
Seattle to Campbell River flights
Portland to Kamloops flights
Seattle to Penticton flights

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 3,214,720 searches. Data last updated June 13, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$200Average$652FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$202Average$512FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$217Average$636FlexibilityNo cancel feeOn-time67%
WestJetCheapest$431Average$628FlexibilityNo cancel feeOn-time60%
American AirlinesCheapest$465Average$615FlexibilityNo cancel feeOn-time71%
DeltaCheapest$470Average$598FlexibilityNo cancel feeOn-timeN/A
New York to Aruba flights
Miami to San Francisco flights
Jacksonville to Miami flights
Philadelphia to Tampa flights
Orlando to Los Angeles flights
Los Angeles to Bali flights
Miami to Boston flights
Miami to Cancún flights
Orlando to Baltimore flights
Denver to Hawaii flights
Cincinnati to Chicago flights
Seattle to Cap Haitien flights

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.
First Class
Business Class
Prem Econ Class
Economy 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 June 13, 2024.
18%of flight departuresEarly morningMidnight to 6 am
52%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
30%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

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
Flights to Naxos
Flights to Urumqi
Flights to Kaunas
Flights to Hyannis Barnstable
Flights to Brainerd Crow Wing County
Flights to Figari-Sud Corse
Flights to Komatsu
Flights to Riverton
Flights to Hakodate
Flights to Trabzon
Flights to Surigao
Flights to Pellston Emmet County
Flights to Constanţa Mihail Kogalniceanu
Flights to Neiva La Marguita
Flights to Liberal
Flights to Virac
Flights to Devils Lake
Flights to Edremit/Korfez
Flights to Alghero-Fertilia
Flights to Gaziantep
Flights to Paleochori Milos
Flights to Rhinelander Oneida County
Flights to Nampula
Flights to Leh
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines