Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Seattle to Montreal from C$ 154

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Montreal departing on 15/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Seattle to Montreal

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
WestJet Logo
8:00 p.m. - 9:40 a.m.
YUL
-
SEA
16h 40m
1 stop
C$ 387WestJet
Sat, 23 May - Thu, 28 May
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
WestJet Logo
8:00 p.m. - 9:40 a.m.
YUL
-
SEA
16h 40m
1 stop
C$ 388WestJet
Fri, 22 May - Wed, 27 May
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
WestJet Logo
8:00 p.m. - 9:40 a.m.
YUL
-
SEA
16h 40m
1 stop
C$ 396WestJet
Fri, 29 May - Mon, 1 Jun
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
WestJet Logo
8:00 p.m. - 9:40 a.m.
YUL
-
SEA
16h 40m
1 stop
C$ 397WestJet
Fri, 22 May - Thu, 28 May
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
WestJet Logo
8:00 p.m. - 9:40 a.m.
YUL
-
SEA
16h 40m
1 stop
C$ 406WestJet
Fri, 29 May - Mon, 1 Jun
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
WestJet Logo
7:25 p.m. - 9:40 a.m.
YUL
-
SEA
17h 15m
2 stops
C$ 408WestJet
Fri, 8 May - Sat, 16 May
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
WestJet Logo
8:00 p.m. - 9:40 a.m.
YUL
-
SEA
16h 40m
1 stop
C$ 425WestJet
Fri, 22 May - Wed, 27 May
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
WestJet Logo
7:25 p.m. - 6:45 p.m.
YUL
-
SEA
26h 20m
2 stops
C$ 426WestJet
Fri, 29 May - Mon, 1 Jun
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
WestJet Logo
7:25 p.m. - 9:40 a.m.
YUL
-
SEA
17h 15m
2 stops
C$ 434WestJet
Fri, 22 May - Wed, 27 May
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
WestJet Logo
7:25 p.m. - 9:40 a.m.
YUL
-
SEA
17h 15m
2 stops
C$ 436WestJet
Fri, 22 May - Wed, 27 May

WestJet flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport

Our best WestJet deals on Seattle to Montreal Pierre Elliott Trudeau Intl Airport flight tickets
WestJet
23 May
SEA7:35 p.m.Seattle/Tacoma Intl
8h 25m
1 stop
YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl
28 May
YUL8:00 p.m.Montreal Pierre Elliott Trudeau Intl
16h 40m
1 stop
SEA9:40 a.m.Seattle/Tacoma Intl
C$ 387
WestJet
22 May
SEA7:35 p.m.Seattle/Tacoma Intl
8h 25m
1 stop
YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl
27 May
YUL8:00 p.m.Montreal Pierre Elliott Trudeau Intl
16h 40m
1 stop
SEA9:40 a.m.Seattle/Tacoma Intl
C$ 388
WestJet
29 May
SEA7:35 p.m.Seattle/Tacoma Intl
8h 25m
1 stop
YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl
1 Jun
YUL8:00 p.m.Montreal Pierre Elliott Trudeau Intl
16h 40m
1 stop
SEA9:40 a.m.Seattle/Tacoma Intl
C$ 396

Air Canada flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport

Our best Air Canada deals on Seattle to Montreal Pierre Elliott Trudeau Intl Airport flight tickets
Air Canada
18 Feb
SEA5:50 a.m.Seattle/Tacoma Intl
8h 10m
1 stop
YUL5:00 p.m.Montreal Pierre Elliott Trudeau Intl
20 Feb
YUL1:25 p.m.Montreal Pierre Elliott Trudeau Intl
8h 51m
1 stop
SEA7:16 p.m.Seattle/Tacoma Intl
C$ 718
Air Canada
16 Feb
SEA8:00 p.m.Seattle/Tacoma Intl
7h 44m
1 stop
YUL6:44 a.m.Montreal Pierre Elliott Trudeau Intl
22 Feb
YUL8:00 a.m.Montreal Pierre Elliott Trudeau Intl
17h 16m
1 stop
SEA10:16 p.m.Seattle/Tacoma Intl
C$ 765
Air Canada
16 Feb
SEA5:45 a.m.Seattle/Tacoma Intl
10h 29m
2 stops
YUL7:14 p.m.Montreal Pierre Elliott Trudeau Intl
22 Feb
YUL3:10 p.m.Montreal Pierre Elliott Trudeau Intl
10h 06m
1 stop
SEA10:16 p.m.Seattle/Tacoma Intl
C$ 972

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport 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, momondo users made 96,600 searches. Data last updated 4 February 2026.
Use the filters below to find and compare flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 23/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

Montreal Pierre Elliott Trudeau Intl

Thu 28/5

8:00 p.m.-9:40 a.m.

1 stop16h 40m

C$ 387

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 22/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

Montreal Pierre Elliott Trudeau Intl

Wed 27/5

8:00 p.m.-9:40 a.m.

1 stop16h 40m

C$ 388

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 29/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

Montreal Pierre Elliott Trudeau Intl

Mon 1/6

8:00 p.m.-9:40 a.m.

1 stop16h 40m

C$ 396

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 22/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

Montreal Pierre Elliott Trudeau Intl

Thu 28/5

8:00 p.m.-9:40 a.m.

1 stop16h 40m

C$ 397

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 29/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

Montreal Pierre Elliott Trudeau Intl

Mon 1/6

8:00 p.m.-9:40 a.m.

1 stop16h 40m

C$ 406

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 8/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

Montreal Pierre Elliott Trudeau Intl

Sat 16/5

7:25 p.m.-9:40 a.m.

2 stops17h 15m

C$ 408

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 22/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

Montreal Pierre Elliott Trudeau Intl

Wed 27/5

8:00 p.m.-9:40 a.m.

1 stop16h 40m

C$ 425

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 29/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

Montreal Pierre Elliott Trudeau Intl

Mon 1/6

7:25 p.m.-6:45 p.m.

2 stops26h 20m

C$ 426

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 22/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

Montreal Pierre Elliott Trudeau Intl

Wed 27/5

7:25 p.m.-9:40 a.m.

2 stops17h 15m

C$ 434

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 22/5

7:35 p.m.-7:00 a.m.

1 stop8h 25m

Montreal Pierre Elliott Trudeau Intl

Wed 27/5

7:25 p.m.-9:40 a.m.

2 stops17h 15m

C$ 436

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Montreal from

How to get the cheapest flight ticket from Seattle to Montreal Pierre Elliott Trudeau Intl Airport

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

What is the cheapest month to fly to Montreal Pierre Elliott Trudeau Intl Airport?

The month of May is, on average, the cheapest month to fly to Montreal Pierre Elliott Trudeau Intl Airport from Seattle, with most prices found around C$ 505. The month of June is another great option to travel to Montreal Pierre Elliott Trudeau Intl Airport, with average flight prices from Seattle averaging around C$ 639.

What is the cheapest day to depart on your flight to Montreal Pierre Elliott Trudeau Intl Airport?

The cheapest day to depart on your flight to Montreal Pierre Elliott Trudeau Intl Airport is on a Friday when prices can be found for as low as C$ 658. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 1,360.

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

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

How far in advance should I book a flight to Montreal Pierre Elliott Trudeau Intl Airport?

You are more likely to see cheaper flights to Montreal Pierre Elliott Trudeau Intl Airport from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Montreal Pierre Elliott Trudeau Intl Airport for around C$ 812 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montreal Pierre Elliott Trudeau Intl Airport from Seattle for as low as C$ 481 on momondo.

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

There is only 1 cabin class available to choose from on Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau 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 Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights?

You could potentially save up to 63% on your flight if you consider stops on a Seattle to Montreal Pierre Elliott Trudeau Intl Airport flight.

How have Seattle to Montreal Pierre Elliott Trudeau Intl Airport flight prices changed over time?

As of February 2026, prices for Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights are approximately 59% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Montreal Pierre Elliott Trudeau Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Montreal Pierre Elliott Trudeau Intl Airport (SEA to YUL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport

Fastest flight time

5h 07m

Direct flights

Every day
The fastest flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport takes 5h 07m
Direct flights go from Seattle to Montreal Pierre Elliott Trudeau Intl Airport every day.
Search flight deals

  • How far is Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl by plane?

    A flight from Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl will travel around 3660.5 km. Flights usually cover this in 5h 07m, depending on flying conditions and air traffic around both airports.

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport.

  • What documentation or ID do you need to fly to Montreal Pierre Elliott Trudeau Intl Airport?

    The travel and health documents required for your trip to Montreal Pierre Elliott Trudeau Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Montreal Pierre Elliott Trudeau Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

Travelling to a place near Montreal?

Book flights to Montreal if you plan to visit one of these locations
Laval
Trois-Rivières
Montebello
Sherbrooke
Brossard
Longueuil
Cornwall
Dorval
Boucherville
North Hatley
Magog
Saint-Sauveur
Drummondville
Bromont
Saint-Jean-sur-Richelieu
Sutton
Waterloo

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Montreal for you.

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

Yes. momondo allows you to filter the results for Seattle to Montreal flights to just show those with flexible booking policies.

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

Once you have performed a search for Seattle to Montreal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Seattle to Montreal now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Montreal and let you know when they change.

An easier way to manage your Montreal Pierre Elliott Trudeau Intl Airport 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 6/3
Fri 13/3
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Montreal