Cheap flights from Ontario to Seattle

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Boston (BOS)
Seattle (SEA)
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How to find the cheapest flight from
Ontario to Seattle (SEA)

How far in advance should I book a flight from Ontario to Seattle?

Users have found that booking a flight from Ontario to Seattle at least 46 days early can save you up to 14% on average compared to booking a flight this week. If booking 46 days before your flight isn’t an option for you, users have found flights from Ontario to Seattle for as little as C$ 645 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 C$ 664 for flights departing within the next 3 days.

Cheap flights from Ontario to Seattle in April, May 2021

30 Apr - 12 May
C$ 417pp
YYZ
Toronto Pearson Intl
American Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
American Airlines
   
2 STOPS
YYZ
Toronto Pearson Intl
3 May - 8 May
C$ 422pp
YYZ
Toronto Pearson Intl
American Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
American Airlines
   
2 STOPS
YYZ
Toronto Pearson Intl
9 May - 24 May
C$ 423pp
YYZ
Toronto Pearson Intl
American Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
American Airlines
 
1 STOP
YYZ
Toronto Pearson Intl

Ontario to Seattle 2021 flight deals

22 Jun - 30 Aug
C$ 387pp
YOW
Ottawa
Air Canada
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Air Canada
 
1 STOP
YOW
Ottawa
22 Jun - 30 Aug
C$ 392pp
YOW
Ottawa
Air Canada
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Air Canada
 
1 STOP
YOW
Ottawa
26 Jun - 29 Aug
C$ 395pp
YOW
Ottawa
Air Canada
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Air Canada
 
1 STOP
YOW
Ottawa

Direct flights to Seattle from Ontario

2 Aug - 9 Aug
C$ 482pp
YYZ
Toronto Pearson Intl
Air Canada
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Air Canada
Direct
YYZ
Toronto Pearson Intl
21 Jun - 28 Jun
C$ 517pp
YYZ
Toronto Pearson Intl
Air Canada
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Air Canada
Direct
YYZ
Toronto Pearson Intl
19 Aug - 23 Aug
C$ 525pp
YYZ
Toronto Pearson Intl
United Airlines
Direct
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
United Airlines
Direct
YYZ
Toronto Pearson Intl

Last minute flights from Ontario to Seattle

22 Apr - 19 May
C$ 517pp
YYZ
Toronto Pearson Intl
American Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
American Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
22 Apr - 12 May
C$ 519pp
YYZ
Toronto Pearson Intl
American Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
American Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
22 Apr - 13 May
C$ 529pp
YYZ
Toronto Pearson Intl
American Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
American Airlines
   
2 STOPS
YYZ
Toronto Pearson Intl

One-way flights to Seattle from Ontario

2:30 a.m. - 12:47 p.m.
Delta
1 stop
13h 17m
YYZ - SEA
Delta
C$ 284
Delta
8:30 p.m. - 10:35 a.m.
Air Canada
2 stops
17h 05m
YYZ - SEA
Air Canada
C$ 329
2:10 a.m. - 4:39 a.m.
WestJet
1 stop
29h 29m
YHM - SEA
WestJet
C$ 386
WestJet

Related info for your journey

Flight FAQs

From Ontario to Seattle

Can I find flights from Ontario to Seattle for under C$ 501 on Cheapflights?

Yes, there are multiple flights from Ontario to Seattle for under C$ 501. The cheapest flight booked recently is on Air Canada for just C$ 387, but on average you can expect to pay C$ 425.

What safety measures are being taken by airlines flying from Ontario to Seattle/Tacoma Intl to control the spread of COVID-19?

Airlines globally have implemented additional safety measures to accommodate you. Delta is one of them. Some of the new policies that have been implemented to accommodate travellers flying from Ontario to Seattle/Tacoma Intl are improved sanitation, HEPA filters, mask requirements, socially-distanced seating (for a limited time), and pre-flight testing for antibodies and symptoms. Policies will vary by airline.

Which airlines flying from Ontario to Seattle/Tacoma Intl have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like Air Canada, WestJet, and United Airlines flying from Ontario to Seattle/Tacoma Intl have implemented new flexible cancellation policies.

Are there direct flights from Ontario to Seattle for under C$ 501 on Cheapflights?

Cheapflights has 7 direct flights from Ontario to Seattle under C$ 501. A good price for a direct flight from Ontario to Seattle is less than C$ 708.

Are there last-minute flights available from Ontario to Seattle for under C$ 626?

There are currently 8+ open flights from Ontario to Seattle within the next 7 days for less than C$ 626.

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

Major Airline, American Airlines and Air Canada are the most popular airlines when flying from Ontario to Seattle.

What are the most popular routes from Ontario to Seattle?

When deciding which route to take from Ontario to Seattle consider Toronto Pearson Intl - Seattle/Tacoma Intl, Toronto Island - Seattle/Tacoma Intl or Toronto Hamilton - Seattle/Tacoma Intl as they are the most popular.

What are the cheapest flights from Ontario to Seattle?

On average you can expect to pay C$ 1,238 for a flight from Ontario to Seattle. The cheapest flight overall is C$ 287 while the most popular route, (Toronto Pearson Intl - Seattle/Tacoma Intl) is currently priced at C$ 424.

How long is the flight from Ontario to Seattle?

Airlines like Air Canada, United Airlines, and Delta fly from Ontario to Seattle in about 5h 21m. The time it takes to get you to your destination can typically vary by up to 3h 15m. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What are the cheapest airlines to flying from Ontario to Seattle round-trip?

Air Canada, at C$ 388, was found to be the cheapest airline from Ontario to Seattle.Alternate airlines to your destination round-trip include American Airlines and Delta.

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

C$ 240 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Delta and American Airlines, with prices starting from C$ 245 and C$ 246, respectively.

Departure points for flights from Ontario to Seattle

Destination information for Seattle

Today's exchange rate
C$ 1 = $0.80
Average temperature for April in Seattle
16.0 °C
Avg rainfall for April in Seattle
75.0 mm

Airports servicing

Chatham-Kent (XCM)
Fort Frances (YAG)
Sault Ste Marie (YAM)
Attawapiskat (YAT)
Fort Albany (YFA)
Kingston, Ontario (YGK)

Airports servicing Seattle

Top 5 airlines flying from Ontario to Seattle

Airline Cheapest Average Flexibility On-time COVID-19 safety
Delta
C$ 271 C$ 452 No cancel fee N/A
Search Delta flights
American Airlines
C$ 163 C$ 453 No cancel fee 71%
Search American Airlines flights
WestJet
C$ 255 C$ 472 No cancel fee 60%
Search WestJet flights
United Airlines
C$ 202 C$ 514 No cancel fee 69%
Search United Airlines flights
Air Canada
C$ 219 C$ 580 No cancel fee 67%
Search Air Canada flights
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