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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle from C$ 247

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 18/3. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — SEA
25 Feb — 4 Mar1
1 adult

The best prices from Montreal Pierre Elliott Trudeau Intl to Seattle/Tacoma Intl are usually found in October or January, booked 37 days in advance, depart on a Wednesday or Friday and return on a Sunday

Cheap flight deals from Pierre Elliott Trudeau Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Pierre Elliott Trudeau Intl (YUL) to Seattle (SEA). 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 20 February 2025.

Round-trip from

C$ 425

One-way from

C$ 247

Popular in

December

Cheapest in

October

Average price

C$ 760

Good round-trip deal

C$ 642 or less

Good one-way deal

C$ 401 or less
18/3-25/3
  • 18/3-25/3
  • 6 total stops
  • 58h 04m total
  • Montreal to Seattle
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18/3
  • 18/3
  • 3 total stops
  • 22h 13m total
  • Montreal to Seattle
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Highest demand for flights based on searches. 3% potential increase in price (C$ 39 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 25 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Montreal Pierre Elliott Trudeau Intl to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Montreal Pierre Elliott Trudeau Intl to Seattle/Tacoma Intl.
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Find flight deals from Pierre Elliott Trudeau Intl to Seattle

Cheapest flights from Pierre Elliott Trudeau Intl to Seattle
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2025.

Tue 18/31:30 p.m.YUL - SEA
3 stops22h 13mMultiple Airlines
Tue 25/39:48 a.m.SEA - YUL
3 stops35h 51mMultiple Airlines
Deal found 19/2C$ 425
Fri 23/57:00 a.m.YUL - SEA
1 stop8h 58mWestJet
Mon 26/57:05 a.m.SEA - YUL
1 stop14h 38mWestJet
Deal found 19/2C$ 573
Tue 8/46:05 a.m.YUL - SEA
2 stops13h 45mDelta
Thu 10/47:10 a.m.SEA - YUL
2 stops13h 28mDelta
Deal found 19/2C$ 611
Fri 14/31:25 p.m.YUL - SEA
1 stop8h 00mAir Canada
Tue 18/36:05 a.m.SEA - YUL
1 stop8h 18mAir Canada
Deal found 19/2C$ 682
Fri 11/48:05 a.m.YUL - SEA
2 stops20h 03mUnited Airlines
Mon 14/47:33 p.m.SEA - YUL
2 stops11h 55mUnited Airlines
Deal found 19/2C$ 737
Tue 18/34:00 p.m.YUL - SEA
1 stop9h 05mAmerican Airlines
Mon 24/312:59 a.m.SEA - YUL
1 stop10h 51mAmerican Airlines
Deal found 19/2C$ 747

Find flights from Pierre Elliott Trudeau Intl to Seattle within your budget

Customize your flight search to find flights from Pierre Elliott Trudeau Intl to Seattle 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 20 February 2025.

Fly from

Pierre Elliott Trudeau Intl

Fly to

Seattle

Route

Depart

Return

Price

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 18/3

1:30 p.m.-8:43 a.m.

3 stops22h 13m

Seattle/Tacoma Intl

Tue 25/3

9:48 a.m.-12:39 a.m.

3 stops35h 51m

C$ 425

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 23/5

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

1 stop8h 58m

Seattle/Tacoma Intl

Mon 26/5

7:05 a.m.-12:43 a.m.

1 stop14h 38m

C$ 573

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 8/4

6:05 a.m.-4:50 p.m.

2 stops13h 45m

Seattle/Tacoma Intl

Thu 10/4

7:10 a.m.-11:38 p.m.

2 stops13h 28m

C$ 611

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 14/3

1:25 p.m.-6:25 p.m.

1 stop8h 00m

Seattle/Tacoma Intl

Tue 18/3

6:05 a.m.-5:23 p.m.

1 stop8h 18m

C$ 682

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 11/4

8:05 a.m.-1:08 a.m.

2 stops20h 03m

Seattle/Tacoma Intl

Mon 14/4

7:33 p.m.-10:28 a.m.

2 stops11h 55m

C$ 737

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 18/3

4:00 p.m.-10:05 p.m.

1 stop9h 05m

Seattle/Tacoma Intl

Mon 24/3

12:59 a.m.-2:50 p.m.

1 stop10h 51m

C$ 747

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 18/3

1:30 p.m.-8:43 a.m.

3 stops22h 13m

C$ 247

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Mon 3/3

4:45 p.m.-2:21 p.m.

1 stop24h 36m

C$ 318

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 3/5

7:30 a.m.-2:13 p.m.

1 stop9h 43m

C$ 344

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 18/3

11:25 a.m.-8:50 p.m.

2 stops12h 25m

C$ 379

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/2

Showing 1-10 of 12 results
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Best time to book a flight from Pierre Elliott Trudeau Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Pierre Elliott Trudeau Intl 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.

Travel insights for flights from Pierre Elliott Trudeau Intl to Seattle

Get recent, data-driven insights about flights from Pierre Elliott Trudeau Intl to Seattle including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Pierre Elliott Trudeau Intl to Seattle. Price data was last updated on 14 February 2025.

The best time to book flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle is 37 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle (average of C$ 262). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle in April is currently the most expensive (average of C$ 382). 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 YUL to SEA?

Find hourly flight availability from Pierre Elliott Trudeau Intl to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 February 2025.

It’s typically best to fly out from Montreal Pierre Elliott Trudeau Intl Airport to Seattle in the evening. Doing so could potentially save you 53% on the flight price compared to flying in the afternoon, which is usually more expensive.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 mm per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, 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 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated 20 February 2025.
Delta
8.0
Very good
8,227 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,227 reviews
Delta
8.0
Very good
8,227 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,768 reviews
Delta
8.0
Very good
8,227 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,227 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

WestJet
7.2
Good
2,801 reviews
Delta
8.0
Very good
8,227 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air Canada
7.0
Good
8,748 reviews
Delta
8.0
Very good
8,227 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Pierre Elliott Trudeau Intl to Seattle. 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 into for flights to Seattle from Montreal Pierre Elliott Trudeau Intl?

    For a flight from Montreal Pierre Elliott Trudeau Intl to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 18.4 km from the centre of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 0 inbound flights from Montreal Pierre Elliott Trudeau Intl per day. 5 airlines have flights to Seattle/Tacoma Intl from Montreal Pierre Elliott Trudeau Intl on a regular basis.

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

    Flying on WestJet is currently your cheapest option to Seattle, with prices starting at C$ 573. Additional round-trip tickets that might be worth considering are offered by Delta and Air Canada, with the lowest prices starting at C$ 611 and C$ 682, respectively. WestJet is 22% cheaper than the average price of flights available within the next 90 days to this destination.

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

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as C$ 318. Users have also found prices from C$ 344 and C$ 379 on Air Canada and Delta, respectively.

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

    Looking for the cheapest flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle? While on average our users pay C$ 651, our data indicates the cheapest price to be C$ 398. The most popular route (Montreal Pierre Elliott Trudeau Intl - Seattle/Tacoma Intl), is priced around C$ 425.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle (average of C$ 262). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle in April is currently the most expensive (average of C$ 382). 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
SeaTac
Tukwila
Marysville
Bothell
Leavenworth
Tacoma
Olympia
Lynnwood

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Alternative routes for Pierre Elliott Trudeau Intl to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Pierre Elliott Trudeau Intl to Portland flights
Pierre Elliott Trudeau Intl to Pasco flights
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Top 5 airlines flying from Pierre Elliott Trudeau Intl to Seattle

Discover the top 5 airlines that operate flights from Pierre Elliott Trudeau Intl to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 20 February 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 407AverageC$ 646FlexibilityNo cancel feeOn-time60%
Search WestJet flights
DeltaCheapestC$ 522AverageC$ 696FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 545AverageC$ 747FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapestC$ 563AverageC$ 750FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 585AverageC$ 768FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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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 Pierre Elliott Trudeau Intl to Seattle.

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

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

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from Pierre Elliott Trudeau Intl today and book when prices fit your budget.

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