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Cheap flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport from C$ 186

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 14/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YUL
20 Apr — 27 Apr1
1 adult

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl are usually found in June or May, booked 27 days in advance, depart on a Sunday or Friday and return on a Friday

Cheap 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 15 April 2025.

Round-trip from

C$ 401

One-way from

C$ 186

Popular in

December

Cheapest in

June

Average price

C$ 799

Good round-trip deal

C$ 951 or less
WestJet
  • WestJet
  • 6/5-11/5
  • 2 total stops
  • 16h 36m total
  • Seattle to Montreal
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WestJet
  • WestJet
  • 14/6
  • 1 total stop
  • 7h 53m total
  • Seattle to Montreal
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 83 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 21 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl.
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Find flight deals from Seattle to Pierre Elliott Trudeau Intl

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 15 April 2025.

Tue 6/52:05 p.m.SEA - YUL
1 stop7h 38mWestJet
Sun 11/57:00 a.m.YUL - SEA
1 stop8h 58mWestJet
Deal found 14/4C$ 401
Tue 6/54:20 p.m.SEA - YUL
2 stops29h 17mMultiple Airlines
Sun 11/57:00 a.m.YUL - SEA
1 stop8h 58mMultiple Airlines
Deal found 14/4C$ 416
Fri 9/510:59 p.m.SEA - YUL
1 stop10h 22mAmerican Airlines
Sat 10/53:44 p.m.YUL - SEA
1 stop12h 01mAmerican Airlines
Deal found 14/4C$ 592
Sat 14/67:20 a.m.SEA - YUL
Nonstop5h 10mAir Canada
Thu 19/65:45 p.m.YUL - SEA
Nonstop5h 56mAir Canada
Deal found 15/4C$ 606
Fri 13/611:40 p.m.SEA - YUL
1 stop11h 01mDelta
Fri 20/67:00 a.m.YUL - SEA
1 stop9h 44mDelta
Deal found 14/4C$ 639

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 15 April 2025.
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

Seattle

Fly to

Pierre Elliott Trudeau Intl

Route

Depart

Return

Price

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 6/5

2:05 p.m.-12:43 a.m.

1 stop7h 38m

Montreal Pierre Elliott Trudeau Intl

Sun 11/5

7:00 a.m.-12:58 p.m.

1 stop8h 58m

C$ 401

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 6/5

4:20 p.m.-12:37 a.m.

2 stops29h 17m

Montreal Pierre Elliott Trudeau Intl

Sun 11/5

7:00 a.m.-12:58 p.m.

1 stop8h 58m

C$ 416

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 9/5

10:59 p.m.-12:21 p.m.

1 stop10h 22m

Montreal Pierre Elliott Trudeau Intl

Sat 10/5

3:44 p.m.-12:45 a.m.

1 stop12h 01m

C$ 592

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 14/6

7:20 a.m.-3:30 p.m.

Nonstop5h 10m

Montreal Pierre Elliott Trudeau Intl

Thu 19/6

5:45 p.m.-8:41 p.m.

Nonstop5h 56m

C$ 606

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 13/6

11:40 p.m.-1:41 p.m.

1 stop11h 01m

Montreal Pierre Elliott Trudeau Intl

Fri 20/6

7:00 a.m.-1:44 p.m.

1 stop9h 44m

C$ 639

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 14/6

1:50 p.m.-12:43 a.m.

1 stop7h 53m

C$ 186

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 29/5

10:49 a.m.-12:37 a.m.

2 stops34h 48m

C$ 198

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 11/6

6:24 p.m.-12:30 p.m.

1 stop15h 06m

C$ 243

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 9/6

7:20 a.m.-3:30 p.m.

Nonstop5h 10m

C$ 266

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sun 8/6

12:05 a.m.-4:44 p.m.

1 stop13h 39m

C$ 280

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/4

Showing 1-10 of 12 results
1
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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
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?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Pierre Elliott Trudeau Intl. Price data was last updated on 11 April 2025.

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 27 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$ 241). Flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport in July is currently the most expensive (average of C$ 312). 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.

What is the cheapest time of day to fly from SEA to YUL?

Find hourly flight availability from Seattle to Pierre Elliott Trudeau Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 April 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport as you normally would.

Rainfall in Pierre Elliott Trudeau Intl by month

Plan your trip to Pierre Elliott Trudeau Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Montreal Pierre Elliott Trudeau Intl Airport ranges from 64.0 - 111.0 mm per month. August is typically the wettest month, when rainfall can reach 111.0 mm. February is typically the driest time to visit Montreal Pierre Elliott Trudeau Intl Airport when rainfall is around 64.0 mm.

Temperature in Pierre Elliott Trudeau Intl by month

Plan your trip to Pierre Elliott Trudeau Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Montreal Pierre Elliott Trudeau Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -9.0 C).

Reviews of airlines servicing Pierre Elliott Trudeau Intl

Get insights into the airlines that provide service to Pierre Elliott Trudeau Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Pierre Elliott Trudeau Intl. Reviews last updated 15 April 2025.
Delta
8.0
Very good
7,917 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,917 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,656 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
WestJet
7.2
Good
2,805 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.0
Good
9,127 reviews
Delta
8.0
Very good
7,917 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport round-trip?

    Our cheapest airline available from Seattle to Montreal Pierre Elliott Trudeau Intl Airport is WestJet. Our recent data shows that you can find tickets from as low as C$ 401 on this airline. Additional options worth looking into are American Airlines and Air Canada, starting at C$ 592 and C$ 606 round-trip. WestJet is 48% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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$ 186 on WestJet. Other airlines that offer cheap prices include Sun Country Air from C$ 243 and Air Canada from C$ 266 one-way.

  • What are the cheapest flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

    On average you can expect to pay C$ 1,052 for a flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport. The cheapest flight overall is C$ 901 while the most popular route, (Seattle/Tacoma Intl - Montreal Pierre Elliott Trudeau Intl) is currently priced at C$ 419.

  • 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$ 241). Flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport in July is currently the most expensive (average of C$ 312). 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

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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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