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Cheap flights from Ontario to Seattle (SEA) from $150

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.
YYZ — SEA
Mai 24 — Mai 311
From?
To?
Fr 5/24
Fr 5/31
1 adult, Economy
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How far in advance should I book a flight from Region of Ontario to Seattle?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 51 days in advance, which can save you up to 75% on flights from Region of Ontario to Seattle compared to booking the week you need them. Waiting 51 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 $571. For sooner than that we have options available in the next 3 days from $674.

What is the cheapest month to fly from Region of Ontario to Seattle?

October can be a great time to fly to Seattle from Region of Ontario with a flight ticket averaging about $524. Cheapflights users have found deals in the month of October for as cheap as $374. The most expensive prices can be found in the month of December.

When is the cheapest time to fly from Region of Ontario to Seattle (ON - SEA)?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Region of Ontario to Seattle as you normally would.

Cheap WestJet flights from Ontario to Seattle

Explore cheap flight options specifically provided by WestJet for the route between Ontario and Seattle. 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 2,621,518 searches. Data last updated Mai 19, 2024.
Take a peek at the cheapest WestJet flights we've detected traveling from Ontario to Seattle. Make sure to double check the flight details before booking.
Fr 9/66:15 amYKF - SEA
1 stop9h 41mWestJet
Mi 9/187:00 amSEA - YKF
1 stop7h 28mWestJet
Deal found 5/17$301
Sa 9/1412:00 pmYYZ - SEA
2 stops11h 21mWestJet
Sa 11/21:50 pmSEA - YYZ
2 stops12h 55mWestJet
Deal found 5/19$305
Mi 9/183:45 pmYYZ - SEA
1 stop7h 41mWestJet
Di 11/51:50 pmSEA - YYZ
1 stop7h 27mWestJet
Deal found 5/18$306
Fr 9/2712:00 pmYYZ - SEA
2 stops11h 26mWestJet
So 9/297:00 amSEA - YYZ
2 stops13h 01mWestJet
Deal found 5/18$310
Sa 9/143:45 pmYYZ - SEA
1 stop7h 36mWestJet
Sa 11/21:50 pmSEA - YYZ
2 stops12h 55mWestJet
Deal found 5/19$311
Fr 9/208:00 amYYZ - SEA
1 stop9h 48mWestJet
Sa 9/287:00 amSEA - YYZ
1 stop7h 22mWestJet
Deal found 5/18$313
Fr 9/66:00 amYHM - SEA
1 stop9h 56mWestJet
Mi 9/187:00 amSEA - YHM
1 stop7h 13mWestJet
Deal found 5/17$314
Fr 9/136:15 amYKF - SEA
1 stop9h 41mWestJet
Mo 9/237:00 amSEA - YKF
1 stop7h 28mWestJet
Deal found 5/17$316
Sa 9/76:15 amYKF - SEA
1 stop9h 41mWestJet
Di 9/101:50 pmSEA - YKF
1 stop8h 02mWestJet
Deal found 5/18$318

Cheap American Airlines flights from Ontario to Seattle

Explore cheap flight options specifically provided by American Airlines for the route between Ontario and Seattle. 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 2,621,518 searches. Data last updated Mai 19, 2024.
Have a look at some of the cheapest available American Airlines flights departing from Ontario and landing in Seattle. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Di 8/133:45 pmYYZ - SEA
1 stop10h 12mAmerican Airlines
Mo 8/1912:18 amSEA - YYZ
1 stop9h 16mAmerican Airlines
Deal found 5/19$339
Di 8/272:40 pmYUL - SEA
1 stop11h 17mAmerican Airlines
Mi 9/46:00 amSEA - YUL
1 stop13h 38mAmerican Airlines
Deal found 5/17$393
Di 8/2711:04 amYUL - SEA
2 stops11h 35mAmerican Airlines
Mi 9/411:59 pmSEA - YUL
1 stop10h 40mAmerican Airlines
Deal found 5/17$403
Do 6/67:00 amYYZ - SEA
1 stop17h 24mAmerican Airlines
Do 6/1310:52 pmSEA - YYZ
1 stop10h 48mAmerican Airlines
Deal found 5/18$435
Do 8/292:40 pmYUL - SEA
2 stops11h 55mAmerican Airlines
So 9/112:18 amSEA - YUL
1 stop11h 41mAmerican Airlines
Deal found 5/17$437
Sa 5/2511:50 amYYZ - SEA
1 stop13h 06mAmerican Airlines
Fr 5/311:15 amSEA - YYZ
1 stop8h 27mAmerican Airlines
Deal found 5/18$498
Sa 5/251:20 pmYYZ - SEA
2 stops10h 44mAmerican Airlines
Sa 6/111:59 pmSEA - YYZ
1 stop8h 16mAmerican Airlines
Deal found 5/18$509
So 5/266:00 amYYZ - SEA
1 stop16h 31mAmerican Airlines
Sa 6/11:15 amSEA - YYZ
1 stop8h 27mAmerican Airlines
Deal found 5/19$579
Mi 5/297:29 amYUL - SEA
1 stop15h 02mAmerican Airlines
Di 6/111:14 amSEA - YUL
1 stop10h 42mAmerican Airlines
Deal found 5/18$698

Cheap Ontario to Seattle flights in May & June 2024

Find cheap flight options from Ontario to Seattle specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,621,518 searches. Prices were last updated on Mai 19, 2024.
Scroll through some of the best deals on flights from Ontario to Seattle in 2024. Check back in a little while for more flight options.
Sa 6/158:20 pmYYZ - SEA
1 stop15h 12mMultiple Airlines
Di 6/189:49 amSEA - YYZ
1 stop17h 46mMultiple Airlines
Deal found 5/18$319
Di 6/182:00 pmYYZ - SEA
2 stops21h 32mMultiple Airlines
Di 6/259:49 amSEA - YYZ
1 stop9h 56mMultiple Airlines
Deal found 5/18$322
Fr 6/148:00 pmYYZ - SEA
1 stop14h 57mMultiple Airlines
Mi 6/198:59 pmSEA - YYZ
1 stop30h 36mMultiple Airlines
Deal found 5/18$331
Do 5/3012:00 pmYYZ - SEA
2 stops35h 04mMultiple Airlines
Mo 6/39:40 pmSEA - YYZ
1 stop22h 07mMultiple Airlines
Deal found 5/17$332
Di 6/1112:20 pmYYZ - SEA
1 stop11h 31mMultiple Airlines
Mo 6/1710:03 pmSEA - YYZ
2 stops19h 48mMultiple Airlines
Deal found 5/18$335
Di 6/188:00 pmYYZ - SEA
1 stop15h 32mMultiple Airlines
Do 6/203:49 pmSEA - YYZ
2 stops11h 46mMultiple Airlines
Deal found 5/18$337
Mi 6/1912:31 pmYYZ - SEA
1 stop11h 09mDelta
Di 6/255:30 amSEA - YYZ
1 stop8h 12mDelta
Deal found 5/19$341
Di 6/118:00 pmYYZ - SEA
1 stop15h 32mMultiple Airlines
Do 6/2011:59 pmSEA - YYZ
1 stop8h 46mMultiple Airlines
Deal found 5/18$349
Sa 6/158:20 pmYYZ - SEA
1 stop15h 12mMultiple Airlines
Di 6/181:47 pmSEA - YYZ
2 stops13h 48mMultiple Airlines
Deal found 5/18$351

Ontario to Seattle 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,621,518 searches. Data last updated Mai 19, 2024.
Scroll through some of the best deals on flights from Ontario to Seattle in 2024. Check back in a little while for more flight options.
Fr 9/66:15 amYKF - SEA
1 stop9h 41mWestJet
Mi 9/187:00 amSEA - YKF
1 stop7h 28mWestJet
Deal found 5/17$301
Fr 9/66:00 amYHM - SEA
1 stop9h 56mWestJet
Mi 9/187:00 amSEA - YHM
1 stop7h 13mWestJet
Deal found 5/17$314
Fr 9/136:15 amYKF - SEA
1 stop9h 41mWestJet
Mo 9/237:00 amSEA - YKF
1 stop7h 28mWestJet
Deal found 5/17$316
Sa 9/76:15 amYKF - SEA
1 stop9h 41mWestJet
Di 9/101:50 pmSEA - YKF
1 stop8h 02mWestJet
Deal found 5/18$318
Fr 9/68:00 amYYZ - SEA
1 stop7h 56mWestJet
Mi 9/187:00 amSEA - YYZ
1 stop8h 07mWestJet
Deal found 5/17$318
Do 9/126:15 amYKF - SEA
1 stop9h 41mWestJet
Mo 9/167:00 amSEA - YKF
1 stop7h 28mWestJet
Deal found 5/18$319
Sa 6/158:20 pmYYZ - SEA
1 stop15h 12mMultiple Airlines
Di 6/189:49 amSEA - YYZ
1 stop17h 46mMultiple Airlines
Deal found 5/18$319
Di 8/206:30 amYYZ - SEA
1 stop9h 26mWestJet
Sa 8/247:00 amSEA - YYZ
2 stops11h 00mWestJet
Deal found 5/17$321
Di 6/182:00 pmYYZ - SEA
2 stops21h 32mMultiple Airlines
Di 6/259:49 amSEA - YYZ
1 stop9h 56mMultiple Airlines
Deal found 5/18$322

Non-stop flights to Seattle from Ontario

Discover non-stop flight options from Ontario to Seattle. 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 2,621,518 searches. Data last updated Mai 19, 2024.
Consider booking one of these non-stop flights heading from Ontario to Seattle. Search for alternative flights from Ontario to Seattle by utilizing the search form above.
Di 8/137:40 pmYYZ - SEA
Nonstop5h 18mAir Canada
Di 8/2011:10 pmSEA - YYZ
Nonstop4h 40mAir Canada
Deal found 5/19$377
So 6/23:40 pmYYZ - SEA
Nonstop5h 15mAlaska Airlines
Di 6/116:50 amSEA - YYZ
Nonstop4h 40mAlaska Airlines
Deal found 5/18$436
Di 6/188:25 amYYZ - SEA
Nonstop5h 26mAir Canada
Di 6/2511:10 pmSEA - YYZ
Nonstop4h 40mAir Canada
Deal found 5/18$438
Fr 6/73:40 pmYYZ - SEA
Nonstop5h 15mAlaska Airlines
So 6/96:50 amSEA - YYZ
Nonstop4h 40mAlaska Airlines
Deal found 5/17$439
Di 6/188:25 amYYZ - SEA
Nonstop5h 26mMultiple Airlines
Di 6/2511:10 pmSEA - YYZ
Nonstop4h 40mMultiple Airlines
Deal found 5/18$449
Di 7/237:40 pmYYZ - SEA
Nonstop5h 18mAir Canada
Mo 7/2911:10 pmSEA - YYZ
Nonstop4h 40mAir Canada
Deal found 5/18$450
Fr 5/313:40 pmYYZ - SEA
Nonstop5h 15mAlaska Airlines
So 6/96:50 amSEA - YYZ
Nonstop4h 40mAlaska Airlines
Deal found 5/19$457
Sa 6/17:40 pmYYZ - SEA
Nonstop5h 18mAir Canada
Di 6/2511:10 pmSEA - YYZ
Nonstop4h 40mAir Canada
Deal found 5/18$466
Mi 6/53:40 pmYYZ - SEA
Nonstop5h 15mAlaska Airlines
Mi 6/126:50 amSEA - YYZ
Nonstop4h 40mAlaska Airlines
Deal found 5/18$467

Ontario to Seattle flights leaving soon

Find last-minute flight options from Ontario to Seattle 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 2,621,518 searches. Data last updated Mai 19, 2024.
Book one of these great deals on flights from Ontario to Seattle. To prevent any unwanted surprises, users should verify their flight info before booking.
So 5/266:34 amYYZ - SEA
1 stop10h 41mDelta
So 6/96:00 amSEA - YYZ
1 stop12h 59mDelta
Deal found 5/19$429
Mi 5/2912:00 pmYYZ - SEA
2 stops23h 45mMultiple Airlines
Mo 6/35:05 pmSEA - YYZ
2 stops27h 21mMultiple Airlines
Deal found 5/18$434
Mi 5/297:55 amYYZ - SEA
3 stops27h 50mMultiple Airlines
Mo 6/35:05 pmSEA - YYZ
2 stops27h 21mMultiple Airlines
Deal found 5/18$442
So 5/263:40 pmYYZ - SEA
Nonstop5h 15mAlaska Airlines
So 6/96:50 amSEA - YYZ
Nonstop4h 40mAlaska Airlines
Deal found 5/19$457
Di 5/287:00 pmYYZ - SEA
2 stops20h 56mWestJet
Fr 5/317:00 amSEA - YYZ
2 stops19h 50mWestJet
Deal found 5/18$469
Mi 5/296:50 amYUL - SEA
3 stops28h 55mMultiple Airlines
Mi 6/129:28 amSEA - YUL
3 stops32h 47mMultiple Airlines
Deal found 5/18$470
So 5/263:40 pmYYZ - SEA
Nonstop5h 15mAlaska Airlines
So 6/26:50 amSEA - YYZ
Nonstop4h 40mAlaska Airlines
Deal found 5/18$475
So 5/263:20 pmYTZ - SEA
1 stop8h 56mAir Canada
So 6/27:40 amSEA - YTZ
1 stop9h 09mAir Canada
Deal found 5/18$479
So 5/263:00 pmYYZ - SEA
1 stop9h 16mAir Canada
So 6/211:10 pmSEA - YYZ
Nonstop4h 38mAir Canada
Deal found 5/18$479

One-way flights to Seattle from Ontario

Search for one-way flight options from Ontario to Seattle. 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 2,621,518 searches. Data last updated Mai 19, 2024.
Take a look at some of the best available options we've come across on one-way flights from Ontario to Seattle. For those needing a return trip from Ontario, there is a search form available above.
Di 6/188:00 pmYYZ - SEA
1 stop15h 32mMultiple Airlines
Deal found 5/19$150
Mi 10/236:15 amYKF - SEA
1 stop9h 41mWestJet
Deal found 5/18$159
Di 9/108:00 pmYYZ - SEA
1 stop17h 48mMultiple Airlines
Deal found 5/18$163
So 9/86:15 amYKF - SEA
2 stops11h 31mWestJet
Deal found 5/18$171
So 6/238:20 pmYYZ - SEA
1 stop15h 12mMultiple Airlines
Deal found 5/17$171
Mi 8/216:00 amYHM - SEA
1 stop9h 56mWestJet
Deal found 5/18$172
Di 7/98:00 pmYYZ - SEA
1 stop24h 51mMultiple Airlines
Deal found 5/17$172
Do 8/226:15 amYKF - SEA
1 stop9h 41mWestJet
Deal found 5/18$174
Mi 8/216:30 amYYZ - SEA
1 stop9h 26mWestJet
Deal found 5/18$176

Find flights from Ontario to Seattle within your budget

Customize your flight search to find flights from Ontario to Seattle 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 2,621,518 searches. Data last updated Mai 19, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$249 - $453

Route

Depart

Return

Price

Toronto Pearson IntlSeattle/Tacoma Intl

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Di 6/11

1 stop15h 32m

Seattle/Tacoma Intl

Di 6/18

1 stop17h 46m

$249

Toronto Pearson IntlSeattle/Tacoma Intl

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Mi 6/12

1 stop15h 32m

Seattle/Tacoma Intl

Di 6/18

1 stop17h 46m

$268

Toronto Kitchener-WaterlooSeattle/Tacoma Intl

YKF - SEA

YKFSEA

Toronto Kitchener-Waterloo

Fr 9/6

1 stop9h 41m

Seattle/Tacoma Intl

Mi 9/18

1 stop7h 28m

$301

Toronto Pearson IntlSeattle/Tacoma Intl

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Di 8/13

1 stop10h 12m

Seattle/Tacoma Intl

Mo 8/19

1 stop9h 16m

$339

Toronto Pearson IntlSeattle/Tacoma Intl

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Mi 6/19

1 stop11h 09m

Seattle/Tacoma Intl

Di 6/25

1 stop8h 12m

$341

Toronto Pearson IntlSeattle/Tacoma Intl

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Do 9/19

Nonstop5h 22m

Seattle/Tacoma Intl

Fr 9/27

Nonstop4h 30m

$345

Toronto Pearson IntlSeattle/Tacoma Intl

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Do 9/12

1 stop8h 15m

Seattle/Tacoma Intl

Mo 9/16

Nonstop4h 33m

$350

OttawaSeattle/Tacoma Intl

YOW - SEA

YOWSEA

Ottawa

Di 8/13

2 stops16h 59m

Seattle/Tacoma Intl

Fr 8/23

1 stop8h 34m

$420

Montreal Pierre Elliott Trudeau IntlSeattle/Tacoma Intl

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fr 6/21

1 stop14h 12m

Seattle/Tacoma Intl

Mo 7/1

1 stop7h 06m

$453

Flights are sorted by cheapest first

Deals found on 5/18

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated Mai 19, 2024.
Read reviews from past customers who have flown WestJet, American Airlines and Delta from Ontario to Seattle. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,166 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

7.3

Boarding

8.2

Overall

8.1

Food

7.3

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

Alaska Airlines
8.1
Very good
9,166 reviews
Alaska Airlines
8.1
Very good
9,166 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

7.3

Boarding

8.2

Overall

8.1

Food

7.3

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

Delta
8.0
Very good
10,635 reviews
Alaska Airlines
8.1
Very good
9,166 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

7.3

Boarding

8.2

Overall

8.1

Food

7.3

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

Aeromexico
7.6
Good
2,525 reviews
Alaska Airlines
8.1
Very good
9,166 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

7.3

Boarding

8.2

Overall

8.1

Food

7.3

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

WestJet
7.5
Good
2,897 reviews
Alaska Airlines
8.1
Very good
9,166 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

7.3

Boarding

8.2

Overall

8.1

Food

7.3

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

United Airlines
7.4
Good
10,900 reviews
Alaska Airlines
8.1
Very good
9,166 reviews
Check prices

Comfort

7.9

Crew

8.6

Entertainment

7.3

Boarding

8.2

Overall

8.1

Food

7.3

Reviews

1 / 10

There were no major issues. A bit of delay but it was understandable. It was a good experience otherwise.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Seattle. 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 into for flights to Seattle from Ontario?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Ontario to Seattle.

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

    Yes, there are multiple flights from Region of Ontario to Seattle for under $300. The cheapest flight booked recently is on Multiple Airlines for just $249, but on average you can expect to pay $296.

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

    Cheapflights has at least 20 direct flights from Region of Ontario to Seattle under $400. A good price for a nonstop flight from Region of Ontario to Seattle is less than $464.

  • Are there last-minute flights available from Region of Ontario to Seattle for under $500?

    There are currently 20+ open flights from Region of Ontario to Seattle within the next 7 days for less than $500.

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

    Nonstop flights are available for this route on the following days: Tuesday, Thursday.

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

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

  • How long is the flight from Region of Ontario to Seattle?

    WestJet can get you from Region of Ontario to Seattle in just under 9h 41m. Your travel time can differ by up to . Airlines will cover a distance of 2066 mi.

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

    $159 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air Canada and American Airlines, with prices starting from $183 and $196, respectively.

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

    When deciding which route to take from Region of Ontario to Seattle consider Toronto Pearson Intl - Seattle/Tacoma Intl, Montreal Pierre Elliott Trudeau Intl - Seattle/Tacoma Intl or Toronto Island - Seattle/Tacoma Intl as they are the most popular.

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

    Consider American Airlines, Air Canada or Alaska Airlines when booking your flight. These represent the most popular airlines when flying from Region of Ontario to Seattle.

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

    No one likes to see their flight delayed. When booking a flight from Region of Ontario to Seattle consider choosing Air Canada (49%), United Airlines (49%) or Brussels Airlines (20%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay $391 for a flight from Region of Ontario to Seattle. The cheapest flight overall is $209 while the most popular route, (Toronto Pearson Intl - Seattle/Tacoma Intl) is currently priced at $268.

  • What does YYZ to SEA mean?

    Great question - YYZ to SEA just means Toronto Pearson Intl Airport to Seattle/Tacoma Intl Airport. Now you’ll know what these unique codes when you look for flights! While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Ottawa Airport (YOW), Toronto Island Airport (YTZ), Hamilton Airport (YHM), London Airport (YXU), Toronto Kitchener-Waterloo Airport (YKF).

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

    The amount of baggage you can bring on your Ontario to Seattle 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 Ontario to Seattle with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Seattle 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 Ontario to Seattle that include hotel bookings?

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

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

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

  • Can I find deals for business class flights from Ontario to Seattle?

    Yes. Cheapflights offers flight deals from Ontario to Seattle 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 Ontario to Seattle that allow pets onboard?

    Many airlines flying from Ontario to Seattle 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 Ontario to Seattle?

    Yes, you can often find last-minute deals on Ontario to Seattle 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 Region of Ontario to Seattle flight deals updated?

    The Region of Ontario to Seattle flight deals you see on this page were last updated on 5/18.

See more FAQs

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

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Top 6 airlines flying from Ontario to Seattle

Discover the top 6 airlines that operate flights from Ontario to Seattle. 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 2,621,518 searches. Data last updated Mai 19, 2024.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$240Average$461FlexibilityNo cancel feeOn-time75%
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WestJetCheapest$374Average$568FlexibilityNo cancel feeOn-time60%
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Air CanadaCheapest$383Average$522FlexibilityNo cancel feeOn-time67%
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American AirlinesCheapest$401Average$464FlexibilityNo cancel feeOn-time71%
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DeltaCheapest$406Average$518FlexibilityNo cancel feeOn-timeN/A
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United AirlinesCheapest$413Average$586FlexibilityNo cancel feeOn-time69%
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Search flights from Ontario to Seattle by cabin class

Find flights from Ontario to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from Ontario to Seattle

Find hourly flight availability from Ontario to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated Mai 19, 2024.
1%of flight departuresEarly morningMidnight to 6 am
53%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
46%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

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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 Ontario to Seattle?

When you search for this flight from Ontario to Seattle, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Ontario to Seattle?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ontario to Seattle.

Can Cheapflights find flights from Ontario to Seattle with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Ontario to Seattle flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Ontario to Seattle become cheaper?

Not ready to book yet? You can track prices for flights from Ontario to Seattle on Cheapflights with our Price Alert feature and get notified when better prices are available.

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