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Cheap flights from Quebec to Seattle from C$ 250

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 27/8. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — SEA
4 Sep — 11 Sep1
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 5 August 2026.

Mon 14/912:25 p.m. -
2 stops9h 20m
Mon 21/97:35 p.m. -
1 stop7h 00m
Deal found 31/7C$ 448
Sat 26/96:45 a.m. -
2 stops15h 00m
Sat 3/107:35 p.m. -
1 stop8h 30m
Deal found 3/8C$ 450
Tue 15/96:45 a.m. -
2 stops15h 00m
Tue 22/97:35 p.m. -
1 stop8h 30m
Deal found 4/8C$ 464
Thu 3/96:45 a.m. -
2 stops15h 00m
Thu 10/97:35 p.m. -
1 stop8h 30m
Deal found 3/8C$ 465
Thu 3/912:25 p.m. -
2 stops11h 35m
Thu 10/97:35 p.m. -
1 stop7h 00m
Deal found 3/8C$ 467
Sat 5/96:45 a.m. -
2 stops15h 00m
Sun 13/97:35 p.m. -
1 stop8h 30m
Deal found 3/8C$ 467
Sat 26/912:25 p.m. -
2 stops9h 20m
Sat 3/107:35 p.m. -
1 stop7h 00m
Deal found 2/8C$ 472
Fri 25/912:25 p.m. -
2 stops24h 15m
Sat 3/107:35 p.m. -
1 stop7h 00m
Deal found 2/8C$ 474
Wed 30/91:20 p.m. -
1 stop8h 25m
Sun 4/107:35 p.m. -
1 stop7h 00m
Deal found 31/7C$ 476
Sat 26/96:45 a.m. -
2 stops15h 00m
Wed 30/910:30 a.m. -
2 stops10h 55m
Deal found 3/8C$ 478
Fri 25/98:00 p.m. -
1 stop16h 40m
Sun 4/107:35 p.m. -
1 stop8h 30m
Deal found 3/8C$ 481
Thu 3/95:30 p.m. -
1 stop19h 10m
Fri 11/97:35 p.m. -
1 stop8h 30m
Deal found 3/8C$ 482

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 5 August 2026.

Round-trip from

C$ 448

One-way from

C$ 250

Popular in

April

Cheapest in

September

Average price

C$ 647
WestJet
  • WestJet
  • 14/9-21/9
  • 3 total stops
  • 16h 20m total
  • Quebec to Seattle
Search Deals
WestJet
  • WestJet
  • 27/8
  • 2 total stops
  • 9h 20m total
  • Quebec to Seattle
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 163 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 August 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 5 August 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

Sat 26/9

9:45 a.m.-6:52 p.m.

1 stop12h 07m

Seattle/Tacoma Intl

Sat 3/10

11:14 p.m.-2:40 p.m.

1 stop12h 26m

C$ 509
Quickest round-trip

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 16/9

6:00 p.m.-10:47 p.m.

1 stop7h 47m

Seattle/Tacoma Intl

Wed 23/9

10:50 a.m.-12:39 a.m.

1 stop10h 49m

C$ 545

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 20/8

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

1 stop12h 00m

Seattle/Tacoma Intl

Fri 28/8

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

1 stop11h 42m

C$ 548

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sun 6/9

6:10 a.m.-4:07 p.m.

1 stop12h 57m

Seattle/Tacoma Intl

Fri 11/9

3:30 p.m.-8:16 a.m.

1 stop13h 46m

C$ 548

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 1/9

8:15 p.m.-9:00 p.m.

1 stop27h 45m

Seattle/Tacoma Intl

Fri 25/9

7:35 p.m.-5:35 a.m.

1 stop7h 00m

C$ 551

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 20/8

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

1 stop12h 00m

Seattle/Tacoma Intl

Tue 25/8

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

1 stop11h 42m

C$ 557

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 25/9

5:45 p.m.-9:40 a.m.

2 stops18h 55m

Seattle/Tacoma Intl

Sat 3/10

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

1 stop8h 30m

C$ 558

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 29/10

7:00 a.m.-9:39 p.m.

1 stop17h 39m

Seattle/Tacoma Intl

Sun 1/11

8:40 a.m.-12:25 a.m.

2 stops12h 45m

C$ 559

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 20/8

6:45 a.m.-9:00 p.m.

2 stops17h 15m

Seattle/Tacoma Intl

Fri 28/8

7:00 a.m.-12:25 a.m.

2 stops14h 25m

C$ 561

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 3/9

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

1 stop12h 00m

Seattle/Tacoma Intl

Sat 26/9

12:00 p.m.-11:44 p.m.

1 stop8h 44m

C$ 566

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/8

Showing 1-10 of 50 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, September is the cheapest month in which you can book a flight from Quebec to Seattle (average of C$ 627). Flying from Quebec to Seattle in June is currently the most expensive (average of C$ 838). 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?

Airfare is below average for this route at the moment.
Quebec to Seattle flights typically cost between C$ 599 and C$ 863 in September.
The cheapest round-trip price found within the last 5 days was C$ 450 on WestJet (26 Sep-3 Oct).

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

Booking 44 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$ 545, WestJet can have you in Seattle from Quebec in 7h 47m. 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, September is the cheapest month in which you can book a flight from Quebec to Seattle (average of C$ 627). Flying from Quebec to Seattle in June is currently the most expensive (average of C$ 838). 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
Lynnwood
Ellensburg
Tukwila
Olympia
Marysville
Federal Way
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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Edmonton to Spokane flights
Sault Ste Marie to Seattle flights
Pearson Intl to Pasco flights
Thunder Bay to Portland flights
Victoria to Portland flights
St John to Portland flights
Winnipeg to Portland flights

Top 5 airlines flying from Quebec to Seattle

Discover the top 5 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 5 August 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 286AverageC$ 749FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 416AverageC$ 534FlexibilityNo cancel feeOn-time60%
Search WestJet flights
American AirlinesCheapestC$ 427AverageC$ 634FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapestC$ 433AverageC$ 827FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 505AverageC$ 876FlexibilityNo cancel feeOn-time69%
Search United Airlines 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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