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

Vancouver (YVR) was the most common stop: 70% of momondo users choosing one-stop flights on this route connected there.

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

Flights via Calgary (YYC) offer the lowest average round-trip price of C$ 565.

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

Toronto (YYZ) has the shortest average layover time for this route: 1h 39m.

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.

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

WestJet is the most popular carrier operating from Montreal to Seattle/Tacoma Intl

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 5 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

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 5 operators available for flights from Montreal to Seattle/Tacoma Intl Airport as of September 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$ 247 Cheap Flights from Montreal to Seattle in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Montreal to Seattle

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

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

15h 00m2 stops Toronto Pearson Intl Calgary

7:35 p.m. - 7:05 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

8h 30m1 stop Calgary

C$ 400WestJet

Tue, 13 Oct - Tue, 20 Oct

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

15h 00m2 stops Toronto Pearson Intl Calgary

7:35 p.m. - 7:05 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

8h 30m1 stop Calgary

C$ 408WestJet

Tue, 13 Oct - Thu, 22 Oct

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

10h 07m1 stop Vancouver Intl

8:15 a.m. - 8:33 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

9h 18m1 stop Vancouver Intl

C$ 441Air Canada

Fri, 8 Jan - Sat, 16 Jan

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

10h 07m1 stop Vancouver Intl

8:40 a.m. - 7:35 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

7h 55m1 stop Vancouver Intl

C$ 461Air Canada

Tue, 10 Nov - Sat, 21 Nov

5:34 p.m. - 12:11 a.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

9h 37m1 stop Chicago O'Hare Intl

8:20 a.m. - 9:42 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

10h 22m1 stop Philadelphia

C$ 481American Airlines

Wed, 23 Sep - Tue, 29 Sep

7:00 a.m. - 8:48 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

16h 48m2 stops Newark San Francisco

8:00 a.m. - 7:38 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

8h 38m1 stop Washington, D.C. Dulles Intl

C$ 539United Airlines

Wed, 20 Jan - Tue, 26 Jan

7:00 a.m. - 6:09 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

14h 09m2 stops Newark Denver Intl

5:07 a.m. - 9:17 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

13h 10m2 stops Denver Intl Chicago O'Hare Intl

C$ 539United Airlines

Wed, 20 Jan - Tue, 26 Jan

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

15h 00m2 stops Toronto Pearson Intl Calgary

8:40 a.m. - 8:43 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

9h 03m1 stop Vancouver Intl

C$ 541Multiple Airlines

Thu, 22 Oct - Mon, 26 Oct

12:59 p.m. - 10:01 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

12h 02m1 stop Philadelphia

11:59 p.m. - 3:24 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

12h 25m2 stops Chicago O'Hare Intl Philadelphia

C$ 548American Airlines

Tue, 23 Feb - Tue, 2 Mar

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

15h 00m2 stops Toronto Pearson Intl Calgary

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$ 557Multiple Airlines

Fri, 23 Oct - Sun, 1 Nov

Cheap last-minute flights

Enter your travel dates to find the best prices.

8:00 p.m. - 9:40 a.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

16h 40m1 stop Calgary

7:35 p.m. - 7:05 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

8h 30m1 stop Calgary

C$ 443WestJet

Tue, 15 Sep - Tue, 22 Sep

7:15 a.m. - 6:45 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

14h 30m1 stop Calgary

7:35 p.m. - 7:05 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

8h 30m1 stop Calgary

C$ 444WestJet

Sat, 12 Sep - Fri, 18 Sep

8:00 p.m. - 9:40 a.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

16h 40m1 stop Calgary

7:35 p.m. - 1:57 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

15h 22m1 stop Calgary

C$ 657Multiple Airlines

Sat, 12 Sep - Fri, 18 Sep

7:30 a.m. - 2:17 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

9h 47m1 stop Vancouver Intl

3:00 p.m. - 7:10 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

13h 10m2 stops Vancouver Intl Calgary

C$ 658Air Canada

Tue, 15 Sep - Tue, 22 Sep

9:45 a.m. - 5:52 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

11h 07m2 stops Chicago O'Hare Intl Denver Intl

7:00 a.m. - 10:06 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

12h 06m2 stops Houston George Bush Intcntl Newark

C$ 665United Airlines

Tue, 15 Sep - Tue, 22 Sep

6:10 a.m. - 7:15 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

16h 05m1 stop Chicago O'Hare Intl

5:20 p.m. - 8:16 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

11h 56m1 stop San Francisco

C$ 665United Airlines

Tue, 15 Sep - Tue, 22 Sep

1:10 p.m. - 9:39 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

11h 29m2 stops Ottawa Toronto Pearson Intl

3:00 p.m. - 7:10 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

13h 10m2 stops Vancouver Intl Calgary

C$ 669Air Canada

Tue, 15 Sep - Tue, 22 Sep

7:15 a.m. - 6:45 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

14h 30m1 stop Calgary

10:59 p.m. - 7:05 a.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

29h 06m2 stops Vancouver Intl Calgary

C$ 746Multiple Airlines

Sun, 13 Sep - Sun, 20 Sep

12:31 p.m. - 9:52 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

12h 21m2 stops Chicago O'Hare Intl Dallas/Fort Worth

6:18 a.m. - 9:42 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

12h 24m2 stops Chicago O'Hare Intl Philadelphia

C$ 815American Airlines

Tue, 15 Sep - Tue, 22 Sep

7:00 a.m. - 1:44 p.m.YUL Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl

9h 44m1 stop Atlanta Hartsfield-Jackson

8:59 a.m. - 11:50 p.m.SEA Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl

11h 51m1 stop Atlanta Hartsfield-Jackson

C$ 891Delta

Fri, 11 Sep - Tue, 15 Sep

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WestJet flights from Montreal to Seattle

Our best WestJet deals on Montreal to Seattle flight tickets

WestJet

13 Oct

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

15h 00m

2 stops

SEA6:45 p.m.Seattle/Tacoma Intl

20 Oct

SEA7:35 p.m.Seattle/Tacoma Intl

8h 30m

1 stop

YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 400

WestJet

13 Oct

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

15h 00m

2 stops

SEA6:45 p.m.Seattle/Tacoma Intl

22 Oct

SEA7:35 p.m.Seattle/Tacoma Intl

8h 30m

1 stop

YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 408

WestJet

7 Oct

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

15h 00m

2 stops

SEA6:45 p.m.Seattle/Tacoma Intl

14 Oct

SEA7:35 p.m.Seattle/Tacoma Intl

8h 30m

1 stop

YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 417

Air Canada flights from Montreal to Seattle

Our best Air Canada deals on Montreal to Seattle flight tickets

Air Canada

8 Jan

YUL7:30 a.m.Montreal Pierre Elliott Trudeau Intl

10h 07m

1 stop

SEA2:37 p.m.Seattle/Tacoma Intl

16 Jan

SEA8:15 a.m.Seattle/Tacoma Intl

9h 18m

1 stop

YUL8:33 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 441

Air Canada

10 Nov

YUL7:30 a.m.Montreal Pierre Elliott Trudeau Intl

10h 07m

1 stop

SEA2:37 p.m.Seattle/Tacoma Intl

21 Nov

SEA8:40 a.m.Seattle/Tacoma Intl

7h 55m

1 stop

YUL7:35 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 461

Air Canada

20 Jan

YUL8:45 a.m.Montreal Pierre Elliott Trudeau Intl

8h 52m

1 stop

SEA2:37 p.m.Seattle/Tacoma Intl

26 Jan

SEA8:15 a.m.Seattle/Tacoma Intl

8h 20m

1 stop

YUL7:35 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 483

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

Tue 13/10

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

2 stops15h 00m

Seattle/Tacoma Intl

Tue 20/10

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

1 stop8h 30m

C$ 400

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 13/10

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

2 stops15h 00m

Seattle/Tacoma Intl

Thu 22/10

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

1 stop8h 30m

C$ 408

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 8/1

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

1 stop10h 07m

Seattle/Tacoma Intl

Sat 16/1

8:15 a.m.-8:33 p.m.

1 stop9h 18m

C$ 441

Quickest round-trip

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 10/11

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

1 stop10h 07m

Seattle/Tacoma Intl

Sat 21/11

8:40 a.m.-7:35 p.m.

1 stop7h 55m

C$ 461

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 23/9

5:34 p.m.-12:11 a.m.

1 stop9h 37m

Seattle/Tacoma Intl

Tue 29/9

8:20 a.m.-9:42 p.m.

1 stop10h 22m

C$ 481

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 20/1

7:00 a.m.-8:48 p.m.

2 stops16h 48m

Seattle/Tacoma Intl

Tue 26/1

8:00 a.m.-7:38 p.m.

1 stop8h 38m

C$ 539

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 20/1

7:00 a.m.-6:09 p.m.

2 stops14h 09m

Seattle/Tacoma Intl

Tue 26/1

5:07 a.m.-9:17 p.m.

2 stops13h 10m

C$ 539

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 22/10

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

2 stops15h 00m

Seattle/Tacoma Intl

Mon 26/10

8:40 a.m.-8:43 p.m.

1 stop9h 03m

C$ 541

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 23/2

12:59 p.m.-10:01 p.m.

1 stop12h 02m

Seattle/Tacoma Intl

Tue 2/3

11:59 p.m.-3:24 p.m.

2 stops12h 25m

C$ 548

MontrealSeattle

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

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 23/10

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

2 stops15h 00m

Seattle/Tacoma Intl

Sun 1/11

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

2 stops12h 55m

C$ 557

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$ 549 to C$ 760.
The lowest price recently found on this route was C$ 400.

What is the cheapest month to fly to Seattle?

If you aren’t able to travel to Seattle during the month of March, then flying in April is also cheap. Prices for this month can be found on momondo for an average of C$ 636.

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$ 688. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around C$ 1,290. 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$ 693 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$ 419 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 September 2026, prices for Montreal to Seattle flights are approximately 18% 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$ 247
Fastest flight time	7h 47m
Direct flights	None

The best one-way flight to Seattle from Montreal in the past 72 hours is C$ 247. The best round-trip flight deal from Montreal to Seattle found on momondo in the last 72 hours is C$ 400.

The fastest flight from Montreal to Seattle takes 7h 47m

There are no direct flights from Montreal to Seattle. There are no popular flight routes from Montreal to Seattle.

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 7h 47m.
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 5 operators available for flights from Montreal to Seattle/Tacoma Intl Airport as of September 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 59% of all bookings. The subsequent popular airlines are WestJet at 24%, Delta at 9%, and United Airlines at 8%.

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$ 280	Free Cancellation	Rating 7.8 8,554 reviews	Search Delta flights
WestJet	PriceFrom C$ 408	Free Cancellation	Rating 7.2 3,447 reviews	Search WestJet flights
American Airlines	PriceFrom C$ 419	Free Cancellation	Rating 7.1 12,046 reviews	Search American Airlines flights
United Airlines	PriceFrom C$ 496	Free Cancellation	Rating 7.4 10,190 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 499	Free Cancellation	Rating 7.1 11,603 reviews	Search Air Canada flights

Leavenworth

Lynnwood

SeaTac

Kirkland

Redmond

Tacoma

Marysville

Tukwila

Woodinville

Olympia

Puyallup

Bainbridge Island

Ellensburg

Edmonds

Chehalis

Fife

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$ 247

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 14/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Montreal to Seattle

Cheap round-trip flights

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Cheap last-minute flights

Big names, great deals

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Filter for what you want

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WestJet flights from Montreal to Seattle

Our best WestJet deals on Montreal to Seattle flight tickets

Air Canada flights from Montreal to Seattle

Our best Air Canada deals on Montreal to Seattle flight tickets

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

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.

Popular Cities in the United States

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

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According to popular flight searches on momondo this year

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