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Cheap flights from Quebec to Seattle from C$ 178

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 29/9. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — SEA
15 Oct — 22 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Quebec to Seattle

Keep the following information in mind while searching for Quebec to Seattle flight deals. Data was last updated 15 September 2025.

Round-trip from

C$ 318

One-way from

C$ 178

Popular in

December

Cheapest in

August

Average price

C$ 684

Good round-trip deal

C$ 575 or less

Good one-way deal

C$ 314 or less
WestJet
  • WestJet
  • 29/9-2/10
  • 3 total stops
  • 20h 36m total
  • Quebec to Seattle
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WestJet
  • WestJet
  • 29/9
  • 1 total stop
  • 7h 54m total
  • Quebec to Seattle
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 47 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 21 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Quebec to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Quebec to Seattle/Tacoma Intl.
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Find flight deals from Quebec to Seattle

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 15 September 2025.

Mon 29/93:35 p.m.YOW - SEA
1 stop7h 54mWestJet
Thu 2/108:40 a.m.SEA - YOW
2 stops12h 42mWestJet
Deal found 15/9C$ 318
Sat 11/107:15 p.m.YOW - SEA
2 stops20h 20mWestJet
Wed 22/101:50 p.m.SEA - YOW
1 stop7h 50mWestJet
Deal found 15/9C$ 350
Sat 11/102:45 p.m.YOW - SEA
1 stop8h 59mUnited Airlines
Wed 22/107:00 a.m.SEA - YOW
1 stop7h 06mUnited Airlines
Deal found 15/9C$ 351
Tue 30/96:33 a.m.YOW - SEA
2 stops12h 47mUnited Airlines
Tue 30/97:37 p.m.SEA - YOW
2 stops15h 27mUnited Airlines
Deal found 15/9C$ 352
Mon 29/93:35 p.m.YOW - SEA
1 stop7h 54mWestJet
Wed 1/108:40 a.m.SEA - YOW
1 stop19h 05mWestJet
Deal found 15/9C$ 358
Tue 30/910:37 a.m.YOW - SEA
2 stops15h 38mUnited Airlines
Fri 3/101:12 p.m.SEA - YOW
1 stop17h 46mUnited Airlines
Deal found 15/9C$ 359
Mon 29/95:15 a.m.YOW - SEA
1 stop8h 44mUnited Airlines
Mon 29/96:55 p.m.SEA - YOW
2 stops12h 03mUnited Airlines
Deal found 15/9C$ 361
Wed 8/105:15 a.m.YOW - SEA
2 stops19h 19mUnited Airlines
Tue 14/1010:54 p.m.SEA - YOW
1 stop9h 51mUnited Airlines
Deal found 15/9C$ 369
Mon 29/95:15 a.m.YOW - SEA
1 stop8h 44mUnited Airlines
Tue 30/911:40 p.m.SEA - YOW
2 stops10h 29mUnited Airlines
Deal found 15/9C$ 370
Fri 17/105:25 p.m.YOW - SEA
1 stop8h 05mUnited Airlines
Wed 29/103:48 p.m.SEA - YOW
2 stops15h 38mUnited Airlines
Deal found 14/9C$ 372
Thu 23/103:18 p.m.YQB - SEA
1 stop10h 12mUnited Airlines
Wed 29/1012:41 p.m.SEA - YQB
3 stops22h 32mUnited Airlines
Deal found 14/9C$ 430
Thu 23/104:14 p.m.YQB - SEA
1 stop11h 13mAmerican Airlines
Tue 28/1012:34 a.m.SEA - YQB
1 stop10h 02mAmerican Airlines
Deal found 14/9C$ 437

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 15 September 2025.
Use the filters below to find and compare flights from Quebec to Seattle that are best for you.

Fly from

Quebec

Fly to

Seattle

Route

Depart

Return

Price

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Sat 11/10

7:15 p.m.-12:35 p.m.

2 stops20h 20m

Seattle/Tacoma Intl

Wed 22/10

1:50 p.m.-12:40 a.m.

1 stop7h 50m

C$ 350

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Sat 11/10

2:45 p.m.-8:44 p.m.

1 stop8h 59m

Seattle/Tacoma Intl

Wed 22/10

7:00 a.m.-5:06 p.m.

1 stop7h 06m

C$ 351

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 1/10

6:33 a.m.-3:45 p.m.

1 stop12h 12m

Seattle/Tacoma Intl

Wed 1/10

6:55 p.m.-9:58 a.m.

2 stops12h 03m

C$ 352

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 30/9

6:33 a.m.-4:20 p.m.

2 stops12h 47m

Seattle/Tacoma Intl

Tue 30/9

7:37 p.m.-2:04 p.m.

2 stops15h 27m

C$ 352

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 30/9

10:37 a.m.-11:15 p.m.

2 stops15h 38m

Seattle/Tacoma Intl

Fri 3/10

6:55 p.m.-9:58 a.m.

2 stops12h 03m

C$ 359

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Wed 1/10

6:33 a.m.-3:45 p.m.

1 stop12h 12m

Seattle/Tacoma Intl

Fri 3/10

1:12 p.m.-9:58 a.m.

1 stop17h 46m

C$ 359

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 30/9

7:29 p.m.-9:59 a.m.

2 stops17h 30m

Seattle/Tacoma Intl

Sat 4/10

10:54 p.m.-11:45 a.m.

1 stop9h 51m

C$ 359

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Thu 2/10

2:48 p.m.-10:17 p.m.

1 stop10h 29m

Seattle/Tacoma Intl

Fri 3/10

1:12 p.m.-9:58 a.m.

1 stop17h 46m

C$ 359

OttawaSeattle

YOW - SEA

YOWSEA

Ottawa

Tue 30/9

6:33 a.m.-11:15 p.m.

2 stops19h 42m

Seattle/Tacoma Intl

Wed 1/10

6:00 a.m.-4:43 p.m.

1 stop7h 43m

C$ 359

Québec CitySeattle

YQB - SEA

YQBSEA

Québec City

Thu 23/10

3:18 p.m.-10:30 p.m.

1 stop10h 12m

Seattle/Tacoma Intl

Wed 29/10

12:41 p.m.-2:13 p.m.

3 stops22h 32m

C$ 430

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/9

Showing 1-10 of 47 results
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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, January is the cheapest month in which you can book a flight from Quebec to Seattle (average of C$ 262). Flying from Quebec to Seattle in December is currently the most expensive (average of C$ 353). 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.

What is the cheapest time of day to fly from QC to SEA?

Find hourly flight availability from Quebec to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 September 2025.

When flying from Quebec to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Quebec to Seattle

Explore weekly flight availability from Quebec to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 15 September 2025.

The most flights from CAQC to SEA are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

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$ 351, WestJet can have you in Seattle from Quebec in 8h 59m. The distance from Quebec to Seattle is about 3529 km. 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 fly from Quebec to Seattle one-way?

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at C$ 178. United Airlines flights start at C$ 218 while deals on Air Canada start at C$ 247 one-way.

  • 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.

  • What are the cheapest flights from Quebec to Seattle?

    While on average a flight from Quebec to Seattle is generally C$ 691, our data shows the cheapest flight currently is C$ 303. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - Seattle/Tacoma Intl), you can expect to pay C$ 421 for that flight.

  • 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, January is the cheapest month in which you can book a flight from Quebec to Seattle (average of C$ 262). Flying from Quebec to Seattle in December is currently the most expensive (average of C$ 353). 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
Leavenworth
SeaTac
Tukwila
Tacoma
Bothell
Cashmere
Renton
Olympia
Marysville
Lynnwood

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Alternative routes for Quebec to Seattle

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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 15 September 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 313AverageC$ 654FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapestC$ 368AverageC$ 643FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 368AverageC$ 559FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 370AverageC$ 658FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 497AverageC$ 624FlexibilityNo cancel feeOn-timeN/A
Search Delta 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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