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Cheap flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport from C$ 181

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YUL
10 Jun — 17 Jun1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl are usually found in October or May, booked 76 days in advance, depart on a Friday or Thursday and return on a Wednesday

Cheap flight deals from Seattle to Pierre Elliott Trudeau Intl

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Pierre Elliott Trudeau Intl
Explore the most affordable flight options available from Seattle to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 May 2026.

Sat 11/77:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Tue 14/76:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 11/5C$ 427
Sun 19/77:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Sun 26/76:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 10/5C$ 431
Sat 25/77:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Tue 28/76:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 10/5C$ 443
Sun 19/77:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Mon 27/78:00 p.m.
YUL
-
SEA
1 stop16h 40m
WestJet
Deal found 10/5C$ 446
Mon 13/77:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Wed 22/78:00 p.m.
YUL
-
SEA
1 stop16h 40m
WestJet
Deal found 7/5C$ 451
Sun 19/77:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Wed 29/77:15 a.m.
YUL
-
SEA
1 stop14h 30m
WestJet
Deal found 10/5C$ 458
Mon 24/87:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Mon 31/86:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 6/5C$ 459
Tue 28/77:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Tue 4/88:00 p.m.
YUL
-
SEA
1 stop16h 40m
WestJet
Deal found 7/5C$ 462
Tue 18/87:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Thu 20/88:00 p.m.
YUL
-
SEA
1 stop28h 00m
WestJet
Deal found 7/5C$ 464
Tue 30/67:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Mon 6/78:00 p.m.
YUL
-
SEA
1 stop16h 40m
WestJet
Deal found 11/5C$ 465
Sat 1/810:30 a.m.
SEA
-
YUL
2 stops10h 55m
WestJet
Sat 8/86:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 10/5C$ 466

Find flight deals from Seattle to Pierre Elliott Trudeau Intl

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Pierre Elliott Trudeau Intl (YUL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 May 2026.

Round-trip from

C$ 427

One-way from

C$ 181

Popular in

January

Cheapest in

October

Average price

C$ 764
WestJet
  • WestJet
  • 11/7-14/7
  • 3 total stops
  • 23h 30m total
  • Seattle to Montreal
Search Deals
WestJet
  • WestJet
  • 10/8
  • 1 total stop
  • 8h 30m total
  • Seattle to Montreal
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 233 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 54 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Pierre Elliott Trudeau Intl 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, Cheapflights users made 629,999 searches. Data last updated 11 May 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

Cheapest round-trip

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 26/8

10:30 a.m.-11:45 p.m.

1 stop10h 15m

Montreal Pierre Elliott Trudeau Intl

Mon 31/8

7:15 a.m.-6:45 p.m.

1 stop14h 30m

C$ 495

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 12/7

7:00 a.m.-4:45 p.m.

2 stops30h 45m

Montreal Pierre Elliott Trudeau Intl

Thu 23/7

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

2 stops15h 00m

C$ 509

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 11/9

10:30 a.m.-11:45 p.m.

1 stop10h 15m

Montreal Pierre Elliott Trudeau Intl

Tue 15/9

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

2 stops15h 00m

C$ 513

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 1/7

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

2 stops10h 55m

Montreal Pierre Elliott Trudeau Intl

Sat 18/7

5:45 p.m.-9:40 a.m.

2 stops18h 55m

C$ 518

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 28/9

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

2 stops10h 55m

Montreal Pierre Elliott Trudeau Intl

Wed 30/9

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

2 stops15h 00m

C$ 580

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 1/6

10:30 a.m.-6:20 p.m.

2 stops28h 50m

Montreal Pierre Elliott Trudeau Intl

Sun 7/6

6:45 a.m.-9:40 a.m.

2 stops29h 55m

C$ 784

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 23/6

7:00 a.m.-4:45 p.m.

2 stops30h 45m

Montreal Pierre Elliott Trudeau Intl

Sun 28/6

7:15 a.m.-9:40 a.m.

1 stop29h 25m

C$ 848
Quickest round-trip

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 28/5

8:00 a.m.-7:45 p.m.

1 stop8h 45m

Montreal Pierre Elliott Trudeau Intl

Mon 1/6

9:15 a.m.-3:55 p.m.

1 stop9h 40m

C$ 857

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 24/5

7:00 a.m.-5:30 p.m.

1 stop7h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 27/5

9:45 a.m.-8:53 p.m.

2 stops14h 08m

C$ 864

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 2/6

5:30 a.m.-6:53 p.m.

2 stops10h 23m

Montreal Pierre Elliott Trudeau Intl

Sat 6/6

2:29 p.m.-11:59 p.m.

2 stops12h 30m

C$ 879

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/5

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Best time to book a flight from Seattle to Pierre Elliott Trudeau Intl

Have a flexible travel schedule? Discover the best time to fly to Pierre Elliott Trudeau Intl from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport

How far ahead should I book a flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

The price you pay for your flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 74 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

Currently, October is the cheapest month in which you can book a flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 682). Flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport in January is currently the most expensive (average of C$ 1,370). 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 Pierre Elliott Trudeau Intl Airport?

Related info for your journey

Find useful and relevant information for your journey from Seattle to Pierre Elliott Trudeau Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Montreal Pierre Elliott Trudeau Intl?

    Seattle/Tacoma Intl (SEA), located 18.4 km from the city centre, is the airport you fly out of when you book flights from Seattle to Montreal Pierre Elliott Trudeau Intl. 0 airlines have flights from Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl on a regular basis. Booking flights from Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl should not be difficult; the airport handles an average of 0 outbound flights to Montreal Pierre Elliott Trudeau Intl per day.

  • How long is the flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

    Departing from Seattle to Montreal Pierre Elliott Trudeau Intl Airport will take you 10h 15m. The distance from Seattle to Montreal Pierre Elliott Trudeau Intl Airport is about 3663 km.

  • What are the cheapest airlines to fly from Seattle to Montreal Pierre Elliott Trudeau Intl Airport one-way?

    One-way options have recently been found by users for as low as C$ 152 on WestJet. Other airlines that offer cheap prices include Air Canada from C$ 235 and United Airlines from C$ 313 one-way.

  • Can I find deals for flights from Seattle to Pierre Elliott Trudeau Intl that include hotel bookings?

    Yes. In addition to deals on Seattle to Pierre Elliott Trudeau Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Pierre Elliott Trudeau Intl?

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

  • Can I find deals for business class flights from Seattle to Pierre Elliott Trudeau Intl?

    Yes. Cheapflights offers flight deals from Seattle to Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl Airport?

    Currently, October is the cheapest month in which you can book a flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 682). Flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport in January is currently the most expensive (average of C$ 1,370). 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

Travelling to a place near Montreal Pierre Elliott Trudeau Intl Airport?

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

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Alternative routes for Seattle to Pierre Elliott Trudeau Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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How does Cheapflights help users find flights from Seattle to Pierre Elliott Trudeau Intl?

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Why should you use Cheapflights to find cheap flight tickets from Seattle to Pierre Elliott Trudeau Intl?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Seattle to Pierre Elliott Trudeau Intl.

Can Cheapflights find flights from Seattle to Pierre Elliott Trudeau Intl with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Pierre Elliott Trudeau Intl flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Seattle to Pierre Elliott Trudeau Intl become cheaper?

Yes, Cheapflights offers price alerts on Seattle to Pierre Elliott Trudeau Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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