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Cheap flights from Seattle to Montreal from C$ 316

SEA — YMQ
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Montreal

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Montreal

Fri 27/116:00 a.m. -
1 stop10h 47m
Thu 3/128:45 a.m. -
1 stop8h 52m
Deal found 26/10C$ 683
Mon 23/113:15 p.m. -
2 stops12h 55m
Tue 1/128:05 a.m. -
2 stops13h 17m
Deal found 26/10C$ 685
Fri 4/1210:10 a.m. -
2 stops10h 24m
Thu 10/121:05 p.m. -
2 stops11h 52m
Deal found 29/10C$ 699
Mon 23/113:15 p.m. -
2 stops12h 55m
Mon 30/116:15 p.m. -
1 stop18h 17m
Deal found 26/10C$ 720

Find flight deals from Seattle to Montreal

Round-trip from

C$ 666

One-way from

C$ 316

Popular in

June

Cheapest in

March

Average price

C$ 815
Air Canada
  • Air Canada
  • 18/2-22/2
  • 4 total stops
  • 26h 12m total
  • Seattle to Montreal
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9/12-31/12
  • 9/12-31/12
  • 2 total stops
  • 12h 46m total
  • Seattle to Montreal
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 197 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 29 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seattle to Montreal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Fri 11/12

5:54 p.m.-1:18 p.m.

1 stop16h 24m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 336

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Fri 11/12

11:39 p.m.-3:26 p.m.

2 stops12h 47m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 340
Quickest round-trip

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Fri 25/12

11:42 a.m.-11:49 p.m.

1 stop9h 07m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 343

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Sun 20/12

9:30 a.m.-11:29 p.m.

1 stop10h 59m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 343

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Tue 1/12

9:50 a.m.-11:33 p.m.

1 stop10h 43m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 343

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Fri 27/11

10:03 a.m.-7:00 a.m.

1 stop17h 57m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 357

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Mon 23/11

6:30 a.m.-9:42 p.m.

1 stop12h 12m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 368

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Fri 27/11

6:09 a.m.-9:26 p.m.

2 stops12h 17m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 373

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Sun 3/1

11:44 p.m.-2:00 p.m.

1 stop11h 16m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 380

SeattleMontreal

SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl

SEAYUL

Seattle/Tacoma Intl

Sat 14/11

9:45 p.m.-12:23 p.m.

2 stops11h 38m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 387

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/10

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from Seattle to Montreal

Have a flexible travel schedule? Discover the best time to fly to Montreal from Seattle with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

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

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

Currently, March is the cheapest month in which you can book a flight from Seattle to Montreal (average of C$ 653). Flying from Seattle to Montreal in December is currently the most expensive (average of C$ 1,129). 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 Montreal?

Airfare is below average for this route at the moment.
Seattle to Montreal flights typically cost between C$ 783 and C$ 996 in February.
The cheapest round-trip price found within the last 5 days was C$ 666 on Air Canada (18 Feb-22 Feb).

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

Booking 55 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Montreal. 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

  • What airport do you fly from for flights from Seattle to Montreal?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Montreal. On average, Seattle/Tacoma Intl has 0 outbound flights to Montreal per day from 0 airlines. Seattle/Tacoma Intl is conveniently located just 18.4 km from Seattle’s city centre.

  • How long is the flight from Seattle to Montreal?

    Delta can get you from Seattle to Montreal in just under 13h 19m. Your travel time can differ by up to . Airlines will cover a distance of 3663 km.

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

    The cheapest airlines for a one-way flight from Seattle to Montreal are WestJet (C$ 135), Air Canada (C$ 290), and United Airlines (C$ 299).

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Seattle to Montreal (average of C$ 653). Flying from Seattle to Montreal in December is currently the most expensive (average of C$ 1,129). 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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By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Montreal from Seattle.

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Need flexible booking options for your flight to Montreal 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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