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

Calgary (YYC) was the most common stop: 62% of momondo users choosing one-stop flights on this route connected there.

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

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

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

Flights via Calgary (YYC) offer the lowest average round-trip price of C$ 357.

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

Toronto (YYZ) has the shortest average layover time for this route: 1h 41m.

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 69% 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.

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

Flights connecting via Toronto (YYZ) have the shortest average one-way travel time: 8h 15m.

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 March 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$ 270 Cheap Flights from Montreal to Seattle in 2026

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Find the cheapest flights from Montreal to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 a.m. - 2:19 p.m.

YUL

SEA

10h 19m

1 stop

3:10 p.m. - 7:05 a.m.

SEA

YUL

12h 55m

1 stop

C$ 431WestJet

Sun, 5 Apr - Thu, 9 Apr

7:30 a.m. - 9:40 a.m.

YUL

SEA

29h 10m

1 stop

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

SEA

YUL

8h 30m

1 stop

C$ 454WestJet

Sat, 25 Apr - Fri, 1 May

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

YUL

SEA

15h 00m

2 stops

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

SEA

YUL

8h 30m

1 stop

C$ 460WestJet

Thu, 7 May - Thu, 14 May

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

YUL

SEA

15h 00m

2 stops

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

SEA

YUL

8h 30m

1 stop

C$ 461WestJet

Wed, 13 May - Sat, 23 May

4:15 p.m. - 2:19 p.m.

YUL

SEA

25h 04m

1 stop

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

SEA

YUL

8h 30m

1 stop

C$ 462WestJet

Mon, 20 Apr - Sun, 26 Apr

8:00 p.m. - 6:45 p.m.

YUL

SEA

25h 45m

1 stop

10:30 a.m. - 12:25 a.m.

SEA

YUL

10h 55m

2 stops

C$ 464WestJet

Sat, 25 Apr - Fri, 1 May

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

YUL

SEA

15h 00m

2 stops

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

SEA

YUL

8h 30m

1 stop

C$ 467WestJet

Wed, 20 May - Tue, 2 Jun

7:30 p.m. - 2:19 p.m.

YUL

SEA

21h 49m

1 stop

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

SEA

YUL

8h 30m

1 stop

C$ 468WestJet

Wed, 8 Apr - Wed, 29 Apr

7:30 p.m. - 2:19 p.m.

YUL

SEA

21h 49m

1 stop

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

SEA

YUL

8h 30m

1 stop

C$ 469WestJet

Wed, 8 Apr - Wed, 29 Apr

8:00 p.m. - 6:45 p.m.

YUL

SEA

25h 45m

1 stop

10:30 a.m. - 12:25 a.m.

SEA

YUL

10h 55m

2 stops

C$ 471WestJet

Sat, 25 Apr - Sat, 2 May

WestJet flights from Montreal to Seattle

Our best WestJet deals on Montreal to Seattle flight tickets

WestJet

5 Apr

YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl

10h 19m

1 stop

SEA2:19 p.m.Seattle/Tacoma Intl

9 Apr

SEA3:10 p.m.Seattle/Tacoma Intl

12h 55m

1 stop

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

C$ 431

WestJet

5 Apr

YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl

10h 19m

1 stop

SEA2:19 p.m.Seattle/Tacoma Intl

9 Apr

SEA3:10 p.m.Seattle/Tacoma Intl

12h 55m

1 stop

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

C$ 434

WestJet

25 Apr

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

29h 10m

1 stop

SEA9:40 a.m.Seattle/Tacoma Intl

1 May

SEA7:35 p.m.Seattle/Tacoma Intl

8h 30m

1 stop

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

C$ 454

Delta flights from Montreal to Seattle

Our best Delta deals on Montreal to Seattle flight tickets

Delta

18 Apr

YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl

12h 40m

2 stops

SEA4:40 p.m.Seattle/Tacoma Intl

25 Apr

SEA8:50 a.m.Seattle/Tacoma Intl

11h 36m

2 stops

YUL11:26 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 545

Delta

31 Mar

YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl

8h 18m

1 stop

SEA12:18 p.m.Seattle/Tacoma Intl

9 Jun

SEA11:25 a.m.Seattle/Tacoma Intl

9h 34m

1 stop

YUL11:59 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 919

Delta

5 Apr

YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl

8h 18m

1 stop

SEA12:18 p.m.Seattle/Tacoma Intl

9 Jun

SEA11:10 p.m.Seattle/Tacoma Intl

16h 44m

2 stops

YUL6:54 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 936

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sun 5/4

7:00 a.m.-2:19 p.m.

1 stop10h 19m

Seattle/Tacoma Intl

Thu 9/4

3:10 p.m.-7:05 a.m.

1 stop12h 55m

C$ 431

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 25/4

7:30 a.m.-9:40 a.m.

1 stop29h 10m

Seattle/Tacoma Intl

Fri 1/5

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

1 stop8h 30m

C$ 454

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 7/5

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

2 stops15h 00m

Seattle/Tacoma Intl

Thu 14/5

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

1 stop8h 30m

C$ 460

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 13/5

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

2 stops15h 00m

Seattle/Tacoma Intl

Sat 23/5

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

1 stop8h 30m

C$ 461

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Mon 20/4

4:15 p.m.-2:19 p.m.

1 stop25h 04m

Seattle/Tacoma Intl

Sun 26/4

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

1 stop8h 30m

C$ 462

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 25/4

8:00 p.m.-6:45 p.m.

1 stop25h 45m

Seattle/Tacoma Intl

Fri 1/5

10:30 a.m.-12:25 a.m.

2 stops10h 55m

C$ 464

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 20/5

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

2 stops15h 00m

Seattle/Tacoma Intl

Tue 2/6

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

1 stop8h 30m

C$ 467

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 8/4

7:30 p.m.-2:19 p.m.

1 stop21h 49m

Seattle/Tacoma Intl

Wed 29/4

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

1 stop8h 30m

C$ 468

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 8/4

7:30 p.m.-2:19 p.m.

1 stop21h 49m

Seattle/Tacoma Intl

Wed 29/4

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

1 stop8h 30m

C$ 469

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 25/4

8:00 p.m.-6:45 p.m.

1 stop25h 45m

Seattle/Tacoma Intl

Sat 2/5

10:30 a.m.-12:25 a.m.

2 stops10h 55m

C$ 471

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 cheapest month to fly to Seattle?

If you aren’t able to travel to Seattle during the month of March, then flying in August is also cheap. Prices for this month can be found on momondo for an average of C$ 644.

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

Our data shows that Wednesday is the least expensive day to fly to Seattle. Tickets to fly out on this day can be as low as C$ 666. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around C$ 726. 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 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$ 645 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$ 420 on momondo.

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

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

Can stopping save me money on Montreal to Seattle flights?

You could potentially save up to 27% on your flight if you consider stops on a Montreal to Seattle flight.

How have Montreal to Seattle flight prices changed over time?

As of March 2026, prices for Montreal to Seattle flights are approximately 14% 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

Fastest flight time	8h 10m
Direct flights	None

The fastest flight from Montreal to Seattle takes 8h 10m

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

Search flight deals

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 10m.
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 March 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 91.30% of the total bookings. Other popular models include Boeing 737 MAX 8 with 4.35% and Boeing 737 MAX 9 with 4.35%.
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 76% of all bookings. The subsequent popular airlines are United Airlines at 13% and WestJet at 11%.

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
American Airlines	PriceFrom C$ 256	Free Cancellation	Rating 7.1 11,491 reviews	Search American Airlines flights
Delta	PriceFrom C$ 279	Free Cancellation	Rating 7.9 8,321 reviews	Search Delta flights
WestJet	PriceFrom C$ 355	Free Cancellation	Rating 7.2 3,300 reviews	Search WestJet flights
United Airlines	PriceFrom C$ 462	Free Cancellation	Rating 7.4 9,469 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 492	Free Cancellation	Rating 7.1 10,836 reviews	Search Air Canada flights

Lynnwood

Leavenworth

SeaTac

Tacoma

Marysville

Redmond

Kirkland

Puyallup

Tukwila

Olympia

Ocean Shores

Ellensburg

Bainbridge Island

Gig Harbor

Renton

Centralia

Kent

Edmonds

Federal Way

Shelton

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$ 270

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 6/5. 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

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Our best Delta 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 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 to Seattle?

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

Can stopping save me money 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

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

Fastest flight time

Direct flights

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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