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Cheap flights from Seattle to Quebec from C$ 255

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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YUL
21 Jul — 28 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Quebec

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Quebec
Explore the most affordable flight options available from Seattle to Quebec. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 June 2026.

Sat 26/97:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Sat 3/106:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 19/6C$ 552
Thu 1/107:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Fri 9/106:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 19/6C$ 563
Sun 20/97:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Thu 24/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 16/6C$ 565
Fri 2/107:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Mon 12/106:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 16/6C$ 566
Thu 13/85:50 a.m.
SEA
-
YUL
2 stops11h 45m
Air Canada
Wed 19/82:15 p.m.
YUL
-
SEA
2 stops11h 27m
Air Canada
Deal found 19/6C$ 567
Sat 29/87:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Sat 5/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 20/6C$ 569
Sat 3/107:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Thu 8/106:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 19/6C$ 570
Sun 20/97:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Fri 25/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 16/6C$ 573
Fri 18/97:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Mon 21/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 20/6C$ 574
Fri 18/97:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Thu 24/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 16/6C$ 576
Thu 17/97:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Thu 24/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 16/6C$ 577
Sat 3/107:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Sun 11/106:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 20/6C$ 579

Find flight deals from Seattle to Quebec

Keep the following information in mind while searching for Seattle to Quebec flight deals. Data was last updated 21 June 2026.

Round-trip from

C$ 552

One-way from

C$ 255

Popular in

December

Cheapest in

March

Average price

C$ 1,034
WestJet
  • WestJet
  • 26/9-3/10
  • 3 total stops
  • 23h 30m total
  • Seattle to Quebec
Search Deals
WestJet
  • WestJet
  • 5/9
  • 1 total stop
  • 8h 30m total
  • Seattle to Quebec
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 78 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 32 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 Seattle to Quebec 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 21 June 2026.
Use the filters below to find and compare flights from Seattle to Quebec that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 26/9

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

1 stop8h 30m

Montreal Pierre Elliott Trudeau Intl

Sat 3/10

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

2 stops15h 00m

C$ 552
Quickest round-trip

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 9/7

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

1 stop7h 00m

Ottawa

Sat 18/7

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

1 stop8h 25m

C$ 628

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 18/9

11:00 p.m.-10:40 a.m.

1 stop8h 40m

Montreal Pierre Elliott Trudeau Intl

Sat 19/9

2:20 p.m.-8:18 p.m.

1 stop8h 58m

C$ 634

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 26/9

10:58 p.m.-4:10 p.m.

1 stop14h 12m

Montreal Pierre Elliott Trudeau Intl

Tue 6/10

1:30 p.m.-10:42 p.m.

2 stops12h 12m

C$ 668

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 20/9

7:00 a.m.-5:30 p.m.

1 stop7h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 21/9

3:25 p.m.-11:36 p.m.

1 stop11h 11m

C$ 675

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 20/7

10:30 a.m.-7:05 a.m.

1 stop17h 35m

Montreal Pierre Elliott Trudeau Intl

Mon 27/7

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

1 stop16h 40m

C$ 686

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 20/8

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

1 stop11h 42m

Montreal Pierre Elliott Trudeau Intl

Tue 25/8

6:00 a.m.-10:31 a.m.

1 stop7h 31m

C$ 688

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 19/8

1:16 p.m.-8:16 a.m.

1 stop16h 00m

Montreal Pierre Elliott Trudeau Intl

Sun 23/8

7:30 a.m.-2:22 p.m.

1 stop9h 52m

C$ 691

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 25/7

7:00 a.m.-5:15 p.m.

1 stop7h 15m

Ottawa

Sat 1/8

1:20 p.m.-9:00 p.m.

1 stop10h 40m

C$ 703

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 18/8

10:30 a.m.-4:45 p.m.

2 stops27h 15m

Montreal Pierre Elliott Trudeau Intl

Tue 8/9

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

2 stops15h 00m

C$ 705

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/6

Showing 1-10 of 58 resultsSorted by cheapest first
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Best time to book a flight from Seattle to Quebec

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

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

Currently, October is the cheapest month in which you can book a flight from Seattle to Quebec (average of C$ 198). Flying from Seattle to Quebec in April is currently the most expensive (average of C$ 606). 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 Seattle to Quebec?

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

The price you pay for your flight from Seattle to Quebec may vary depending on when you book. For the best chance of a lower fare, look to book 72 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Related info for your journey

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

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

  • How long is the flight from Seattle to Quebec?

    A quick flight from Seattle to Quebec can take about 8h 30m. WestJet provides one of the quickest options available for as low as C$ 552. Airlines will cover a distance of 3663 km. This flight may include one or multiple stops.

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

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as C$ 157. Users have also found prices from C$ 243 and C$ 303 on Air Canada and United Airlines, respectively.

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

    The most popular flight routes from Seattle to Quebec are Seattle/Tacoma Intl - Montreal Pierre Elliott Trudeau Intl, Seattle/Tacoma Intl - Québec City and Seattle/Tacoma Intl - Ottawa.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Quebec 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 Seattle to Quebec?

    Currently, October is the cheapest month in which you can book a flight from Seattle to Quebec (average of C$ 198). Flying from Seattle to Quebec in April is currently the most expensive (average of C$ 606). 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

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

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

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