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Cheap flights from Washington to Montreal Pierre Elliott Trudeau Intl Airport from C$ 145

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 29/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YUL
28 Feb — 7 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Washington to Pierre Elliott Trudeau Intl

Enter your travel dates to find the best prices.

Cheapest flights from Washington to Pierre Elliott Trudeau Intl
Explore the most affordable flight options available from Washington to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 January 2026.

Sun 17/57:35 p.m.
SEA
-
YUL
1 stop8h 25m
WestJet
Wed 20/55:30 p.m.
YUL
-
SEA
1 stop19h 10m
WestJet
Deal found 27/1C$ 386
Thu 30/47:35 p.m.
SEA
-
YUL
1 stop8h 25m
WestJet
Sun 3/58:00 p.m.
YUL
-
SEA
1 stop16h 40m
WestJet
Deal found 27/1C$ 388
Thu 7/57:35 p.m.
SEA
-
YUL
1 stop8h 25m
WestJet
Tue 12/58:00 p.m.
YUL
-
SEA
1 stop16h 40m
WestJet
Deal found 27/1C$ 390
Sat 2/57:35 p.m.
SEA
-
YUL
1 stop8h 25m
WestJet
Wed 6/57:15 a.m.
YUL
-
SEA
1 stop14h 30m
WestJet
Deal found 27/1C$ 391
Fri 1/57:35 p.m.
SEA
-
YUL
1 stop8h 25m
WestJet
Mon 4/57:15 a.m.
YUL
-
SEA
1 stop14h 30m
WestJet
Deal found 27/1C$ 395
Thu 30/47:35 p.m.
SEA
-
YUL
1 stop8h 25m
WestJet
Mon 4/57:15 a.m.
YUL
-
SEA
1 stop14h 30m
WestJet
Deal found 27/1C$ 400
Fri 22/57:35 p.m.
SEA
-
YUL
1 stop8h 25m
WestJet
Wed 27/58:00 p.m.
YUL
-
SEA
1 stop16h 40m
WestJet
Deal found 27/1C$ 413
Fri 29/57:35 p.m.
SEA
-
YUL
1 stop8h 25m
WestJet
Mon 1/68:00 p.m.
YUL
-
SEA
1 stop16h 40m
WestJet
Deal found 28/1C$ 419
Fri 15/52:30 p.m.
PDX
-
YUL
1 stop13h 30m
WestJet
Tue 26/57:15 a.m.
YUL
-
PDX
1 stop9h 35m
WestJet
Deal found 28/1C$ 458
Wed 13/52:30 p.m.
PDX
-
YUL
1 stop13h 30m
WestJet
Tue 26/57:15 a.m.
YUL
-
PDX
1 stop9h 35m
WestJet
Deal found 28/1C$ 466
Wed 13/55:00 a.m.
PDX
-
YUL
2 stops16h 40m
Multiple Airlines
Tue 26/57:15 a.m.
YUL
-
PDX
1 stop9h 35m
Multiple Airlines
Deal found 28/1C$ 516
Sat 16/512:27 p.m.
PDX
-
YUL
2 stops32h 18m
Multiple Airlines
Tue 26/57:15 a.m.
YUL
-
PDX
1 stop9h 35m
Multiple Airlines
Deal found 28/1C$ 524

Find flight deals from Washington to Pierre Elliott Trudeau Intl

Keep the following information in mind while searching for Washington to Pierre Elliott Trudeau Intl flight deals. Data was last updated 29 January 2026.

Round-trip from

C$ 386

One-way from

C$ 145

Popular in

December

Cheapest in

September

Average price

C$ 854
WestJet
  • WestJet
  • 17/5-20/5
  • 2 total stops
  • 27h 35m total
  • Washington to Montreal
Search Deals
WestJet
  • WestJet
  • 29/4
  • 1 total stop
  • 8h 25m total
  • Washington to Montreal
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 104 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington 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 29 January 2026.
Use the filters below to find and compare flights from Washington to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.

Fly from

Washington

Fly to

Pierre Elliott Trudeau Intl

Route

Depart

Return

Price

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 2/5

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

1 stop8h 25m

Montreal Pierre Elliott Trudeau Intl

Mon 4/5

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

1 stop14h 30m

C$ 400

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 17/5

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

1 stop8h 25m

Montreal Pierre Elliott Trudeau Intl

Wed 20/5

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

2 stops26h 20m

C$ 424

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 1/5

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

1 stop8h 25m

Montreal Pierre Elliott Trudeau Intl

Mon 4/5

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

2 stops15h 00m

C$ 424

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 23/3

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

1 stop12h 55m

Montreal Pierre Elliott Trudeau Intl

Wed 25/3

6:45 a.m.-2:19 p.m.

2 stops34h 34m

C$ 464

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 31/3

8:09 a.m.-12:38 a.m.

1 stop13h 29m

Montreal Pierre Elliott Trudeau Intl

Sun 5/4

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

1 stop10h 19m

C$ 481

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 30/4

7:35 p.m.-6:25 p.m.

2 stops19h 50m

Montreal Pierre Elliott Trudeau Intl

Sun 3/5

12:15 p.m.-9:40 a.m.

2 stops24h 25m

C$ 523

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Wed 13/5

2:30 p.m.-7:00 a.m.

1 stop13h 30m

Montreal Pierre Elliott Trudeau Intl

Sat 23/5

8:00 p.m.-1:50 p.m.

1 stop20h 50m

C$ 550

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Thu 12/3

3:15 p.m.-7:13 a.m.

2 stops12h 58m

Montreal Pierre Elliott Trudeau Intl

Tue 17/3

8:40 a.m.-6:30 p.m.

2 stops12h 50m

C$ 559

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Thu 26/2

11:59 p.m.-2:00 p.m.

1 stop11h 01m

Montreal Pierre Elliott Trudeau Intl

Wed 4/3

6:00 a.m.-6:49 p.m.

1 stop15h 49m

C$ 565

PortlandMontreal

PDX - YUL

PDXYUL

Portland

Tue 12/5

12:40 a.m.-1:44 p.m.

1 stop10h 04m

Montreal Pierre Elliott Trudeau Intl

Thu 28/5

7:00 a.m.-12:54 p.m.

1 stop8h 54m

C$ 565

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/1

Showing 1-10 of 43 results
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Best time to book a flight from Washington to Pierre Elliott Trudeau Intl

Have a flexible travel schedule? Discover the best time to fly to Pierre Elliott Trudeau Intl from Washington 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 Washington to Montreal Pierre Elliott Trudeau Intl Airport

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

Currently, May is the cheapest month in which you can book a flight from State of Washington to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 276). Flying from State of Washington to Montreal Pierre Elliott Trudeau Intl Airport in December is currently the most expensive (average of C$ 766). 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.

Related info for your journey

Find useful and relevant information for your journey from Washington 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.

  • How long is the flight from State of Washington to Montreal Pierre Elliott Trudeau Intl Airport?

    Departing from State of Washington to Montreal Pierre Elliott Trudeau Intl Airport will take you 8h 25m. Airlines will cover a distance of 3663 km. Both multi-stop and direct flights can be found to your destination and back.

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

    The cheapest airlines for a one-way flight from State of Washington to Montreal Pierre Elliott Trudeau Intl Airport are WestJet (C$ 161), Air Canada (C$ 233), and United Airlines (C$ 324).

  • What are the most popular routes from State of Washington to Montreal Pierre Elliott Trudeau Intl Airport?

    When deciding which route to take from State of Washington to Montreal Pierre Elliott Trudeau Intl Airport consider Seattle/Tacoma Intl - Montreal Pierre Elliott Trudeau Intl, Portland - Montreal Pierre Elliott Trudeau Intl or Walla Walla - Montreal Pierre Elliott Trudeau Intl as they are the most popular.

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

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

  • How can I find direct flights from Washington 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 Washington to Pierre Elliott Trudeau Intl.

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

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Montreal Pierre Elliott Trudeau Intl Airport?

    Currently, May is the cheapest month in which you can book a flight from State of Washington to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 276). Flying from State of Washington to Montreal Pierre Elliott Trudeau Intl Airport in December is currently the most expensive (average of C$ 766). 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
Sherbrooke
Cornwall
Brossard
Montebello
Boucherville
Longueuil
Drummondville
Magog
Saint-Jean-sur-Richelieu
Bromont
North Hatley
Saint-Sauveur
Louiseville

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Alternative routes for Washington 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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