Which layover airport offers the lowest fares from Montreal to Seattle?

Flights via Calgary (YYC) offer the lowest average round-trip price of C$ 575.

Which layover airport has the shortest connection time from Montreal to Seattle?

Toronto (YYZ) has the shortest average layover time for this route: 1h 37m.

What is the cheapest airline that flies from Montreal to Seattle/Tacoma Intl?

WestJet, Delta, and American Airlines are the most popular carriers operating from Montreal to Seattle/Tacoma Intl

Which layover airport has the shortest travel time from Montreal to Seattle?

Flights connecting via Vancouver (YVR) have the shortest average one-way travel time: 8h 12m.

Which airlines fly to Seattle?

Air Canada, WestJet and United Airlines are the top three most popular airlines that fly to Seattle from Montreal according to our data. Air Canada is the first choice among our users, with 61% of people opting to fly with this airline when travelling to Seattle. Keep in mind that there are 4 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular layover for flights between Montreal and Seattle?

Vancouver (YVR) was the most common stop: 69% of momondo users choosing one-stop flights on this route connected there.

When did momondo last update prices for flights from Montreal to Seattle/Tacoma Intl Airport?

Prices for flights from Montreal to Seattle/Tacoma Intl Airport are updated daily.

How many operators does momondo search for flights from Montreal to Seattle/Tacoma Intl Airport?

There are 4 operators available for flights from Montreal to Seattle/Tacoma Intl Airport as of October 2026.

How old do you have to be to fly from Montreal to Seattle/Tacoma Intl Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montreal to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

C$ 330 Cheap Flights from Montreal to Seattle in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Montreal to Seattle

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

4:15 p.m. - 1:40 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

24h 25m1 stop Calgary

2:30 p.m. - 2:50 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

21h 20m1 stop Calgary

C$ 592WestJet

Fri, 29 Jan - Thu, 4 Feb

12:50 p.m. - 10:04 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

12h 14m1 stop Detroit Metropolitan Wayne County

8:30 a.m. - 11:48 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

12h 18m1 stop Atlanta Hartsfield-Jackson

C$ 603Delta

Wed, 2 Dec - Wed, 9 Dec

12:08 p.m. - 8:31 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

11h 23m1 stop Chicago O'Hare Intl

9:15 a.m. - 10:48 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

10h 33m1 stop Philadelphia

C$ 603American Airlines

Thu, 3 Dec - Wed, 9 Dec

6:00 a.m. - 3:03 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

12h 03m1 stop Detroit Metropolitan Wayne County

9:50 a.m. - 11:33 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

10h 43m1 stop Detroit Metropolitan Wayne County

C$ 603Delta

Thu, 10 Dec - Mon, 14 Dec

2:24 p.m. - 11:09 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

11h 45m1 stop Charlotte Douglas

11:59 p.m. - 11:30 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

8h 31m1 stop Chicago O'Hare Intl

C$ 607American Airlines

Thu, 10 Dec - Tue, 5 Jan

6:45 a.m. - 1:40 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

33h 55m2 stops Toronto Pearson Intl Calgary

2:30 p.m. - 2:50 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

21h 20m1 stop Calgary

C$ 618WestJet

Fri, 29 Jan - Thu, 4 Feb

7:30 a.m. - 2:37 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

10h 07m1 stop Vancouver Intl

3:15 p.m. - 7:10 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

12h 55m2 stops Vancouver Intl Calgary

C$ 668Air Canada

Wed, 18 Nov - Tue, 1 Dec

2:25 p.m. - 9:57 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

10h 32m2 stops Winnipeg Vancouver Intl

7:05 p.m. - 9:25 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

11h 20m2 stops Vancouver Intl Toronto Pearson Intl

C$ 670Air Canada

Wed, 18 Nov - Tue, 1 Dec

9:15 a.m. - 11:33 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

17h 18m2 stops Washington, D.C. Dulles Intl San Francisco

7:27 p.m. - 2:00 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

15h 33m2 stops San Francisco Chicago O'Hare Intl

C$ 690United Airlines

Wed, 4 Nov - Sat, 7 Nov

4:45 p.m. - 11:07 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

9h 22m1 stop Chicago O'Hare Intl

8:09 a.m. - 7:48 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

8h 39m1 stop Washington, D.C. Dulles Intl

C$ 690United Airlines

Wed, 4 Nov - Sat, 7 Nov

Cheap last-minute flights

Enter your travel dates to find the best prices.

12:44 p.m. - 11:52 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

14h 08m1 stop Atlanta Hartsfield-Jackson

11:40 p.m. - 11:37 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

8h 57m1 stop Atlanta Hartsfield-Jackson

C$ 731Delta

Wed, 28 Oct - Tue, 17 Nov

12:44 p.m. - 10:03 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

12h 19m1 stop Atlanta Hartsfield-Jackson

8:25 a.m. - 11:48 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

12h 23m1 stop Atlanta Hartsfield-Jackson

C$ 731Delta

Wed, 28 Oct - Wed, 18 Nov

8:15 a.m. - 6:32 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

13h 17m2 stops Edmonton Vancouver Intl

8:40 a.m. - 11:34 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

11h 54m2 stops Vancouver Intl Calgary

C$ 770Air Canada

Fri, 23 Oct - Wed, 18 Nov

2:20 p.m. - 10:47 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

11h 27m2 stops Edmonton Vancouver Intl

3:15 p.m. - 7:10 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

12h 55m2 stops Vancouver Intl Calgary

C$ 770Air Canada

Sat, 24 Oct - Tue, 17 Nov

12:30 p.m. - 10:37 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

13h 07m2 stops Chicago O'Hare Intl Los Angeles

9:45 p.m. - 3:26 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

14h 41m2 stops Charlotte Douglas Philadelphia

C$ 786American Airlines

Wed, 28 Oct - Thu, 26 Nov

5:34 p.m. - 12:36 a.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

10h 02m1 stop Chicago O'Hare Intl

9:45 p.m. - 3:26 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

14h 41m2 stops Charlotte Douglas Philadelphia

C$ 786American Airlines

Wed, 28 Oct - Thu, 26 Nov

8:30 a.m. - 8:56 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

15h 26m1 stop Washington, D.C. Reagan-National

2:30 p.m. - 10:17 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

16h 47m1 stop Chicago O'Hare Intl

C$ 900United Airlines

Tue, 27 Oct - Sat, 21 Nov

5:50 p.m. - 9:47 a.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

18h 57m1 stop Denver Intl

5:05 a.m. - 5:10 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

9h 05m1 stop Denver Intl

C$ 950United Airlines

Mon, 26 Oct - Tue, 17 Nov

5:15 p.m. - 2:40 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

24h 25m1 stop Calgary

2:30 p.m. - 12:30 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

31h 00m2 stops Calgary Toronto Pearson Intl

C$ 1,157WestJet

Mon, 26 Oct - Wed, 18 Nov

5:15 p.m. - 2:40 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

24h 25m1 stop Calgary

2:30 p.m. - 12:30 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

31h 00m2 stops Calgary Toronto Pearson Intl

C$ 1,168WestJet

Mon, 26 Oct - Tue, 17 Nov

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WestJet flights from Montreal to Seattle

Our best WestJet deals on Montreal to Seattle flight tickets

WestJet

29 Jan

YUL4:15 p.m.Montreal Pierre Elliott Trudeau Intl

24h 25m

1 stop

SEA1:40 p.m.Seattle/Tacoma Intl

4 Feb

SEA2:30 p.m.Seattle/Tacoma Intl

21h 20m

1 stop

YUL2:50 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 592

WestJet

29 Jan

YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl

33h 55m

2 stops

SEA1:40 p.m.Seattle/Tacoma Intl

4 Feb

SEA2:30 p.m.Seattle/Tacoma Intl

21h 20m

1 stop

YUL2:50 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 618

WestJet

1 Dec

YUL4:15 p.m.Montreal Pierre Elliott Trudeau Intl

24h 25m

1 stop

SEA1:40 p.m.Seattle/Tacoma Intl

7 Dec

SEA2:30 p.m.Seattle/Tacoma Intl

21h 20m

1 stop

YUL2:50 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 621

American Airlines flights from Montreal to Seattle

Our best American Airlines deals on Montreal to Seattle flight tickets

American Airlines

3 Dec

YUL12:08 p.m.Montreal Pierre Elliott Trudeau Intl

11h 23m

1 stop

SEA8:31 p.m.Seattle/Tacoma Intl

9 Dec

SEA9:15 a.m.Seattle/Tacoma Intl

10h 33m

1 stop

YUL10:48 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 603

American Airlines

10 Dec

YUL2:24 p.m.Montreal Pierre Elliott Trudeau Intl

11h 45m

1 stop

SEA11:09 p.m.Seattle/Tacoma Intl

5 Jan

SEA11:59 p.m.Seattle/Tacoma Intl

8h 31m

1 stop

YUL11:30 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 607

American Airlines

4 Dec

YUL12:08 p.m.Montreal Pierre Elliott Trudeau Intl

11h 23m

1 stop

SEA8:31 p.m.Seattle/Tacoma Intl

11 Dec

SEA9:15 a.m.Seattle/Tacoma Intl

10h 33m

1 stop

YUL10:48 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 611

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 29/1

4:15 p.m.-1:40 p.m.

1 stop24h 25m

Seattle/Tacoma Intl

Thu 4/2

2:30 p.m.-2:50 p.m.

1 stop21h 20m

C$ 592

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 2/12

12:50 p.m.-10:04 p.m.

1 stop12h 14m

Seattle/Tacoma Intl

Wed 9/12

8:30 a.m.-11:48 p.m.

1 stop12h 18m

C$ 603

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 3/12

12:08 p.m.-8:31 p.m.

1 stop11h 23m

Seattle/Tacoma Intl

Wed 9/12

9:15 a.m.-10:48 p.m.

1 stop10h 33m

C$ 603

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 10/12

6:00 a.m.-3:03 p.m.

1 stop12h 03m

Seattle/Tacoma Intl

Mon 14/12

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

1 stop10h 43m

C$ 603

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 10/12

2:24 p.m.-11:09 p.m.

1 stop11h 45m

Seattle/Tacoma Intl

Tue 5/1

11:59 p.m.-11:30 a.m.

1 stop8h 31m

C$ 607

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 29/1

6:45 a.m.-1:40 p.m.

2 stops33h 55m

Seattle/Tacoma Intl

Thu 4/2

2:30 p.m.-2:50 p.m.

1 stop21h 20m

C$ 618

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 18/11

7:30 a.m.-2:37 p.m.

1 stop10h 07m

Seattle/Tacoma Intl

Tue 1/12

3:15 p.m.-7:10 a.m.

2 stops12h 55m

C$ 668

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 18/11

2:25 p.m.-9:57 p.m.

2 stops10h 32m

Seattle/Tacoma Intl

Tue 1/12

7:05 p.m.-9:25 a.m.

2 stops11h 20m

C$ 670

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 4/11

9:15 a.m.-11:33 p.m.

2 stops17h 18m

Seattle/Tacoma Intl

Sat 7/11

7:27 p.m.-2:00 p.m.

2 stops15h 33m

C$ 690

Quickest round-trip

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 4/11

4:45 p.m.-11:07 p.m.

1 stop9h 22m

Seattle/Tacoma Intl

Sat 7/11

8:09 a.m.-7:48 p.m.

1 stop8h 39m

C$ 690

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Montreal to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Montreal and Seattle?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 622 to C$ 976.
The lowest price recently found on this route was C$ 592.

What is the cheapest month to fly to Seattle?

If you aren’t able to travel to Seattle during the month of October, then flying in September is also cheap. Prices for this month can be found on momondo for an average of C$ 617.

What is the cheapest day to depart on your flight to Seattle?

Our data shows that Friday is the least expensive day to fly to Seattle. Tickets to fly out on this day can be as low as C$ 643. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around C$ 977. These prices are subject to change though, so be sure to set up a Price Alert for flights to Seattle.

What is the cheapest Montreal to Seattle/Tacoma Intl flight route?

Fly from Montreal Pierre Elliott Trudeau Intl to Seattle/Tacoma Intl for the best Montreal - Seattle/Tacoma Intl flight prices

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

You are more likely to see cheaper flights to Seattle from Montreal when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around C$ 692 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Montreal for as low as C$ 427 on momondo.

What cabin class options are available on Montreal to Seattle flights?

There is only 1 cabin class available to choose from on Montreal to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Montreal to Seattle flight prices changed over time?

As of October 2026, prices for Montreal to Seattle flights are approximately 22% cheaper when compared to flights at the same time last year.

When to book flights from Montreal to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Montreal to Seattle according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Montreal to Seattle (YMQ to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montreal to Seattle

Best price found	C$ 330
Fastest flight time	8h 09m
Direct flights	None

The best one-way flight to Seattle from Montreal in the past 72 hours is C$ 330. The best round-trip flight deal from Montreal to Seattle found on momondo in the last 72 hours is C$ 592.

The fastest flight from Montreal to Seattle takes 8h 09m

There are no direct flights from Montreal to Seattle. Popular non-direct route for this connection is Montreal Pierre Elliott Trudeau Intl Airport - Seattle/Tacoma Intl Airport.

Search flight deals

Frequently asked questions about flying from Montreal to Seattle

How far is Montreal to Seattle/Tacoma Intl by plane?
The straight-line distance from Montreal to Seattle/Tacoma Intl is 3672.5 km. In terms of flight time, this usually takes a little over 8h 09m.
When did momondo last update prices for flights from Montreal to Seattle/Tacoma Intl Airport?
Prices for flights from Montreal to Seattle/Tacoma Intl Airport are updated daily.
How many operators does momondo search for flights from Montreal to Seattle/Tacoma Intl Airport?
There are 4 operators available for flights from Montreal to Seattle/Tacoma Intl Airport as of October 2026.
How old do you have to be to fly from Montreal to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montreal to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Montreal to Seattle?
Based on momondo bookings for flights between Montreal and Seattle, the leading plane model is Airbus A220-300, making up 100.00% of the total bookings.
What is the most popular airline from Montreal to Seattle?
momondo data reveals that the most frequently booked airline on the route from Montreal to Seattle is Air Canada, representing 56% of all bookings. The subsequent popular airlines are WestJet at 25%, Delta at 10%, and United Airlines at 10%.

Best airlines flying from Montreal to Seattle

Compare and see reviews for airlines that fly from Montreal to Seattle with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom C$ 286	Free Cancellation	Rating 7.8 8,661 reviews	Search Delta flights
WestJet	PriceFrom C$ 416	Free Cancellation	Rating 7.2 3,446 reviews	Search WestJet flights
United Airlines	PriceFrom C$ 505	Free Cancellation	Rating 7.3 10,401 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 509	Free Cancellation	Rating 7.1 11,793 reviews	Search Air Canada flights

Leavenworth

SeaTac

Lynnwood

Kirkland

Tukwila

Tacoma

Redmond

Woodinville

Marysville

Puyallup

Bainbridge Island

Ellensburg

Edmonds

Chehalis

Fife

Lakewood

Renton

Shoreline

Ocean Shores

Centralia

Why use momondo?

Why should I use momondo to find a flight deal from Montreal to Seattle?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Montreal to Seattle . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Montreal to Seattle with flexible booking policies on momondo?

Flights from Montreal to Seattle with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Montreal to Seattle?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Montreal.

I’m not ready to book a flight from Montreal to Seattle right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Montreal to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Cheap flights from Montreal to Seattle from C$ 330

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montreal to Seattle departing on 26/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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WestJet flights from Montreal to Seattle

Our best WestJet deals on Montreal to Seattle flight tickets

American Airlines flights from Montreal to Seattle

Our best American Airlines deals on Montreal to Seattle flight tickets

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See travel insights to Seattle from

How to get the cheapest flight ticket from Montreal to Seattle

What is the typical price of a round-trip flight between Montreal and Seattle?

What is the cheapest month to fly to Seattle?

What is the cheapest day to depart on your flight to Seattle?

What is the cheapest Montreal to Seattle/Tacoma Intl flight route?

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

What cabin class options are available on Montreal to Seattle flights?

How have Montreal to Seattle flight prices changed over time?

What is the cheapest airline that flies from Montreal to Seattle/Tacoma Intl?

Which airlines fly to Seattle?

Which airport is the most popular layover for flights between Montreal and Seattle?

Which layover airport offers the lowest fares from Montreal to Seattle?

Which layover airport has the shortest travel time from Montreal to Seattle?

Which layover airport has the shortest connection time from Montreal to Seattle?

When to book flights from Montreal to Seattle

Cheap Montreal to Seattle (YMQ to SEA) flight deals and tips

Best price found

Fastest flight time

Direct flights

Frequently asked questions about flying from Montreal to Seattle

Best airlines flying from Montreal to Seattle

Compare and see reviews for airlines that fly from Montreal to Seattle with momondo

Travelling to a place near Seattle?

Why use momondo?

An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Washington

Fly your favourite airline to Seattle

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Seattle

List of cabin classes available on flights landing in Seattle. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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