Cheap flights from Ontario to Seattle from C$ 216

This is the cheapest one-way flight price, found on 31/5. Prices may vary by date and flight preferences.
YYZ — SEA
6 Jun — 13 Jun1
Return
1 adult
Economy
From?
To?
Tue 6/6
Tue 13/6

Cheap flights from Ontario to Seattle in June, July 2023

The best prices found for Ontario to SEA flights for June, July
These are some of the best deals we've found on flights to Seattle in 2023 at this time. If these deals don't appeal to you, be sure to come back soon for more options.

Ontario to Seattle 2023 flight deals

Cheap flights to Seattle from Ontario found for this year
These are some of the best deals we've found on flights to Seattle in 2023 at this time. If these deals don't appeal to you, be sure to come back soon for more options.

Cheap United Airlines flights from Ontario to Seattle

Find some of the cheapest United Airlines flights travelling from Ontario to Seattle. Make sure to check back often as deals are often changing.

Cheap Air Canada flights from Ontario to Seattle

Take a gander at the lowest prices we've found on Air Canada flights from Ontario to Seattle. Make sure to examine the flight information before completing your reservation.

Direct flights to Seattle from Ontario

Save time with Ontario to Seattle direct flight deals
For a shorter flight, select one of these non-stop flights from Ontario to Seattle. Those looking to potentially save on 1 or 2-stop flights from Ontario to Seattle should utilize the search form at the top of the page.

Last minute flights from Ontario to Seattle

Late deals on round-trip flights to Seattle from Ontario, departing today and this week
Book one of these great deals on flights from Ontario to Seattle. It's wise to confirm all flight details are correct before booking.

One-way flights to Seattle from Ontario

The cheapest one-way flights from Ontario to Seattle
Some of the best available deals we've found on one-way flights from Ontario to Seattle. Users in need of a round-trip flight from Ontario to Seattle instead should update the search form at the top of page.

Find flights from Ontario to Seattle within your budget

Use the slider to find flights from Ontario to Seattle that fit your budget.

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C$ 361 - C$ 610

Route

Depart

Return

Price

OttawaSeattle/Tacoma Intl

YOW - SEA

YOWSEA

Ottawa

Thu 28/9

1 stop13h 04m

Seattle/Tacoma Intl

Wed 11/10

1 stop6h 55m

C$ 361

Toronto Pearson IntlSeattle/Tacoma Intl

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 20/9

1 stop14h 49m

Seattle/Tacoma Intl

Thu 28/9

1 stop7h 35m

C$ 393

Toronto Pearson IntlSeattle/Tacoma Intl

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 12/10

1 stop13h 59m

Seattle/Tacoma Intl

Mon 23/10

1 stop7h 35m

C$ 400

Toronto Pearson IntlSeattle/Tacoma Intl

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Mon 11/9

1 stop8h 59m

Seattle/Tacoma Intl

Wed 20/9

1 stop7h 35m

C$ 407

Toronto Pearson IntlSeattle/Tacoma Intl

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 19/9

1 stop8h 59m

Seattle/Tacoma Intl

Thu 21/9

1 stop7h 35m

C$ 410

Toronto Pearson IntlSeattle/Tacoma Intl

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 9/8

1 stop7h 59m

Seattle/Tacoma Intl

Wed 20/9

1 stop7h 37m

C$ 479

Toronto Pearson IntlSeattle/Tacoma Intl

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 9/8

2 stops12h 34m

Seattle/Tacoma Intl

Wed 20/9

2 stops14h 02m

C$ 485

OttawaSeattle/Tacoma Intl

YOW - SEA

YOWSEA

Ottawa

Fri 16/6

1 stop18h 27m

Seattle/Tacoma Intl

Tue 20/6

1 stop7h 48m

C$ 555

OttawaSeattle/Tacoma Intl

YOW - SEA

YOWSEA

Ottawa

Sat 26/8

1 stop8h 42m

Seattle/Tacoma Intl

Tue 29/8

1 stop12h 28m

C$ 610

Flights are sorted by cheapest first

Deals found on 31/5

Related info for your journey

Useful info, stats and facts about Ontario to Seattle flights.

Departure points for flights from Ontario to Seattle

Select to see more specific information for flights to Seattle from all departure points in Ontario

Top 6 airlines flying from Ontario to Seattle

The chart below displays the airlines Cheapflights users travelling from Ontario to Seattle choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
WestJetCheapestC$ 288AverageC$ 633FlexibilityNo cancel feeOn-time60%COVID-19 safety
Search WestJet flights
United AirlinesCheapestC$ 382AverageC$ 758FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
Air CanadaCheapestC$ 443AverageC$ 768FlexibilityNo cancel feeOn-time67%COVID-19 safety
Search Air Canada flights
DeltaCheapestC$ 467AverageC$ 686FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
American AirlinesCheapestC$ 502AverageC$ 696FlexibilityNo cancel feeOn-time71%COVID-19 safety
Search American Airlines flights
Endeavor AirlinesCheapestC$ 764AverageC$ 908FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Endeavor Airlines flights

Hourly flight availability from Ontario to Seattle

See what time of day planes typically take off from Ontario to Seattle
0%of flight departuresEarly morningMidnight to 6 am
50%of flight departuresMorning6 am to noon
50%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
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Noon
6 PM
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