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Cheap flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport from C$ 221

SEA — YUL
23 Oct — 30 Oct1
1 adult
1 adult, Economy, 0 bags

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

Tue 20/107:35 p.m. -
1 stop8h 30m
Fri 23/108:00 p.m. -
1 stop25h 45m
Deal found 18/9C$ 454
Wed 21/107:35 p.m. -
1 stop8h 30m
Wed 28/106:45 a.m. -
2 stops10h 55m
Deal found 21/9C$ 457
Fri 23/107:35 p.m. -
1 stop8h 30m
Thu 29/106:45 a.m. -
2 stops34h 55m
Deal found 18/9C$ 497
Thu 22/107:35 p.m. -
1 stop8h 30m
Thu 29/105:15 p.m. -
1 stop24h 25m
Deal found 21/9C$ 503
Thu 22/107:35 p.m. -
1 stop8h 30m
Wed 28/105:34 p.m. -
1 stop10h 02m
Deal found 22/9C$ 524
Thu 22/107:35 p.m. -
1 stop8h 30m
Wed 28/107:30 a.m. -
1 stop10h 07m
Deal found 22/9C$ 527
Sat 24/1010:30 a.m. -
1 stop10h 15m
Thu 29/105:15 p.m. -
1 stop24h 25m
Deal found 22/9C$ 549

Find flight deals from Seattle to Pierre Elliott Trudeau Intl

Round-trip from

C$ 454

One-way from

C$ 221

Popular in

January

Cheapest in

October

Average price

C$ 985
WestJet
  • WestJet
  • 20/10-23/10
  • 2 total stops
  • 34h 15m total
  • Seattle to Montreal
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WestJet
  • WestJet
  • 21/10-31/12
  • 1 total stop
  • 17h 35m total
  • Seattle to Montreal
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 229 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 54 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.

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Route

Depart

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Price

Cheapest round-trip

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Thu 5/11

11:25 a.m.-11:25 p.m.

1 stop9h 00m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 277
Quickest round-trip

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Tue 19/1

6:00 a.m.-3:59 p.m.

1 stop6h 59m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 277

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Mon 4/1

9:20 p.m.-11:44 a.m.

1 stop11h 24m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 277

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Mon 26/10

11:59 p.m.-3:27 p.m.

2 stops12h 28m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 284

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Sat 10/10

7:35 p.m.-7:15 a.m.

2 stops32h 40m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 351

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Wed 7/10

8:25 a.m.-11:22 p.m.

1 stop11h 57m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 351

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Mon 30/11

11:45 p.m.-11:36 a.m.

1 stop8h 51m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 361

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Thu 5/11

2:30 p.m.-4:30 p.m.

3 stops23h 00m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-9:00 p.m.

Nonstop0h 00m

C$ 381

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Sun 8/11

6:00 a.m.-5:38 p.m.

1 stop8h 38m

Montreal Pierre Elliott Trudeau Intl

Sat 14/11

7:00 a.m.-4:38 p.m.

1 stop12h 38m

C$ 634

SeattleMontreal

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

SEAYUL

Seattle/Tacoma Intl

Sun 8/11

6:00 a.m.-5:38 p.m.

1 stop8h 38m

Montreal Pierre Elliott Trudeau Intl

Fri 13/11

7:00 a.m.-4:38 p.m.

1 stop12h 38m

C$ 634

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/9

Showing 1-10 of 19 resultsSorted by cheapest first
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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

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 36 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$ 832). Flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport in January is currently the most expensive (average of C$ 1,408). 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?

Airfare is below average for this route at the moment.

Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights typically cost between C$ 776 and C$ 1,201 in October.
The cheapest round-trip price found within the last 5 days was C$ 454 on WestJet (20 Oct-23 Oct).

Related info for your journey

  • 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 8h 38m. 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$ 136 on WestJet. Other airlines that offer cheap prices include Air Canada from C$ 291 and United Airlines from C$ 300 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$ 832). Flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport in January is currently the most expensive (average of C$ 1,408). 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
Dorval
Trois-Rivières
Brossard
Sherbrooke
Longueuil
Cornwall
Boucherville
Bromont
Magog
Montebello
Saint-Jean-sur-Richelieu
Drummondville
North Hatley
Saint-Sauveur
Louiseville

Browse thousands of different options on Cheapflights for your next trip

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