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Cheap flights from Quebec to Seattle from C$ 305

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 21/10. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — SEA
19 Jul — 26 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Quebec to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Quebec to Seattle
Explore the most affordable flight options available from Quebec to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 June 2026.

Fri 18/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Sun 27/97:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 18/6C$ 476
Sat 5/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Sun 13/97:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 17/6C$ 479
Thu 8/106:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Mon 12/107:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 16/6C$ 480
Fri 4/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Mon 7/97:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 14/6C$ 483
Wed 7/106:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Wed 14/107:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 14/6C$ 490
Thu 10/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Sat 19/910:30 a.m.
SEA
-
YUL
2 stops10h 55m
WestJet
Deal found 13/6C$ 493
Mon 31/86:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Sun 6/910:30 a.m.
SEA
-
YUL
2 stops10h 55m
WestJet
Deal found 17/6C$ 500
Sat 12/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Sat 3/1010:30 a.m.
SEA
-
YUL
2 stops10h 55m
WestJet
Deal found 13/6C$ 501
Wed 30/91:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Sun 4/107:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Deal found 14/6C$ 534
Mon 12/101:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Wed 14/107:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Deal found 15/6C$ 535
Tue 14/71:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Thu 16/77:35 p.m.
SEA
-
YOW
1 stop7h 00m
WestJet
Deal found 14/6C$ 539
Tue 14/71:20 p.m.
YOW
-
SEA
1 stop8h 25m
WestJet
Tue 21/77:00 a.m.
SEA
-
YOW
1 stop9h 20m
WestJet
Deal found 17/6C$ 541

Find flight deals from Quebec to Seattle

Keep the following information in mind while searching for Quebec to Seattle flight deals. Data was last updated 19 June 2026.

Round-trip from

C$ 476

One-way from

C$ 305

Popular in

April

Cheapest in

August

Average price

C$ 815
WestJet
  • WestJet
  • 18/9-27/9
  • 3 total stops
  • 23h 30m total
  • Quebec to Seattle
Search Deals
WestJet
  • WestJet
  • 21/10
  • 1 total stop
  • 8h 25m total
  • Quebec to Seattle
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 150 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (C$ 76 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Quebec 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 629,999 searches. Data last updated 19 June 2026.
Use the filters below to find and compare flights from Quebec to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 18/9

7:15 a.m.-6:45 p.m.

1 stop14h 30m

Seattle/Tacoma Intl

Sun 27/9

7:35 p.m.-7:05 a.m.

1 stop8h 30m

C$ 507

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 10/9

8:00 p.m.-9:40 a.m.

1 stop16h 40m

Seattle/Tacoma Intl

Fri 18/9

7:35 p.m.-7:05 a.m.

1 stop8h 30m

C$ 517

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 12/9

8:00 p.m.-6:45 p.m.

1 stop25h 45m

Seattle/Tacoma Intl

Sat 3/10

10:30 a.m.-12:25 a.m.

2 stops10h 55m

C$ 527

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 12/9

5:45 p.m.-6:45 p.m.

2 stops28h 00m

Seattle/Tacoma Intl

Sat 26/9

7:35 p.m.-7:05 a.m.

1 stop8h 30m

C$ 534

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 28/10

12:45 p.m.-6:38 p.m.

1 stop8h 53m

Seattle/Tacoma Intl

Sat 31/10

1:45 p.m.-11:37 p.m.

1 stop6h 52m

C$ 535

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 26/9

7:00 a.m.-4:43 p.m.

1 stop12h 43m

Seattle/Tacoma Intl

Wed 30/9

9:10 a.m.-11:57 p.m.

1 stop11h 47m

C$ 537

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 24/9

12:47 p.m.-10:02 p.m.

1 stop12h 15m

Seattle/Tacoma Intl

Tue 29/9

11:50 a.m.-11:57 p.m.

1 stop9h 07m

C$ 538

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 21/8

12:44 p.m.-11:57 p.m.

1 stop14h 13m

Seattle/Tacoma Intl

Wed 26/8

9:10 a.m.-11:52 p.m.

1 stop11h 42m

C$ 539

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 20/8

12:44 p.m.-11:57 p.m.

1 stop14h 13m

Seattle/Tacoma Intl

Fri 28/8

8:59 a.m.-11:40 p.m.

1 stop11h 41m

C$ 541

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Mon 10/8

1:20 p.m.-6:45 p.m.

1 stop8h 25m

Seattle/Tacoma Intl

Thu 13/8

10:30 a.m.-12:20 a.m.

2 stops10h 50m

C$ 551

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/6

Showing 1-10 of 48 resultsSorted by cheapest first
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Best time to book a flight from Quebec to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Quebec 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.

Cheapflights Insights

Everything you need to know about your flight from Quebec to Seattle

What is the cheapest month to book a flight from Quebec to Seattle?

Currently, June is the cheapest month in which you can book a flight from Quebec to Seattle (average of C$ 234). Flying from Quebec to Seattle in February is currently the most expensive (average of C$ 455). 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.

How much does it cost to fly round-trip from Quebec to Seattle?

How far ahead should I book a flight from Quebec to Seattle?

Booking 45 days in advance of your planned departure date is, on average, the best time to get cheap flights from Quebec to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Related info for your journey

Find useful and relevant information for your journey from Quebec 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 Quebec?

    Located just 18.4 km from the city centre, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Seattle from Quebec.

  • How long is the flight from Quebec to Seattle?

    For as low as C$ 535, WestJet can have you in Seattle from Quebec in 8h 53m. The distance from Quebec to Seattle is about 3663 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from Quebec to Seattle?

    The most popular route from Quebec to Seattle is Montreal Pierre Elliott Trudeau Intl - Seattle/Tacoma Intl. You may also consider Ottawa - Seattle/Tacoma Intl or Québec City - Seattle/Tacoma Intl.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Quebec 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.

  • What is the cheapest month to book a flight from Quebec to Seattle?

    Currently, June is the cheapest month in which you can book a flight from Quebec to Seattle (average of C$ 234). Flying from Quebec to Seattle in February is currently the most expensive (average of C$ 455). 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Kent
Leavenworth
Mukilteo
Tacoma
Renton
Cashmere
Tukwila
Olympia
Marysville
Kirkland

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Quebec to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Quebec to Seattle

Discover the top 4 airlines that operate flights from Quebec 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 629,999 searches. Data last updated 19 June 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 287AverageC$ 680FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 418AverageC$ 531FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 450AverageC$ 825FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 453AverageC$ 786FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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 Quebec to Seattle?

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 Seattle from Quebec today with Cheapflights!

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

Millions of users choose and trust Cheapflights to book the best flight deals from Quebec to Seattle for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Need flexible booking options for your flight to Seattle from Quebec? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, Cheapflights offers price alerts on Quebec to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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