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

The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $149. However, be on the lookout for offers from Air Canada and American Airlines, as they are both options that can get you from Montreal Pierre Elliott Trudeau Intl Airport to Seattle for a low price.

What is the cheapest day to fly from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

Travelers seeking maximum savings on their Montreal Pierre Elliott Trudeau Intl Airport to Seattle flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

Consider Air Canada, Delta or WestJet when booking your flight. These represent the most popular airlines when flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle.

What is the cheapest day to fly round-trip from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

Travelers have found that booking a Tuesday departure is the best way to save up to 29% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

What is the cheapest month to fly from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, August can be a great choice for travel to Seattle. Flights to Seattle from Montreal Pierre Elliott Trudeau Intl Airport in August are about $528 on average during August, but can be found for as low as $254.

Most accurate provider : When it comes to deals on Montreal Pierre Elliott Trudeau Intl Airport-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Montreal Pierre Elliott Trudeau Intl Airport-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Montreal Pierre Elliott Trudeau Intl Airport-Seattle flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Montreal Pierre Elliott Trudeau Intl Airport-Seattle flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Montreal Pierre Elliott Trudeau Intl Airport-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Most people fly into Seattle/Tacoma Intl (SEA) if they book a flight to Seattle from Montreal Pierre Elliott Trudeau Intl. On average, Seattle/Tacoma Intl has 0 inbound flights from Montreal Pierre Elliott Trudeau Intl per day from 3 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

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.

$149+ Flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Pierre Elliott Trudeau Intl to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to Seattle/Tacoma Intl are usually found in October or September, booked 37 days in advance, depart on a Wednesday or Thursday and return on a Thursday

Cheap flight deals from Pierre Elliott Trudeau Intl to Seattle

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$347 (oojo)
One-way from	$149 (Kiwi.com)
Popular in	December
Cheapest in	October
Average price	$523
Good round-trip deal	$281 or less
Good one-way deal	$281 or less

Provider with most accurate pricing for Montreal Pierre Elliott Trudeau Intl-Seattle/Tacoma Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Montreal Pierre Elliott Trudeau Intl-Seattle/Tacoma Intl flights.

Search Deals

From Montreal Pierre Elliott Trudeau Intl to Seattle/Tacoma Intl

Search Deals

One-way flight from Montreal Pierre Elliott Trudeau Intl to Seattle/Tacoma Intl

Search Deals

Highest demand for flights based on searches. 4% potential increase in price ($22 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Price to beat on a round-trip flight from Montreal Pierre Elliott Trudeau Intl to Seattle/Tacoma Intl.

Search Deals

Price to beat on a one-way flight from Montreal Pierre Elliott Trudeau Intl to Seattle/Tacoma Intl.

Search Deals

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 April 22, 2025.

Tue 7/16:45 amYUL - SEA

2 stops16h 43mWestJet

Tue 7/87:35 pmSEA - YUL

1 stop26h 08mWestJet

Deal found 4/20

$347

Mon 5/56:45 amYUL - SEA

2 stops16h 57mMultiple Airlines

Fri 5/301:15 pmSEA - YUL

1 stop21h 58mMultiple Airlines

Deal found 4/21

$355

Sun 6/14:45 pmYUL - SEA

Nonstop5h 52mAir Canada

Sat 6/711:40 amSEA - YUL

1 stop10h 01mAir Canada

Deal found 4/20

$359

Tue 7/18:05 amYUL - SEA

1 stop19h 54mUnited Airlines

Tue 7/87:20 amSEA - YUL

Nonstop5h 09mUnited Airlines

Deal found 4/20

$374

Sun 6/14:45 pmYUL - SEA

Nonstop5h 52mLufthansa

Sat 6/77:20 amSEA - YUL

Nonstop5h 10mLufthansa

Deal found 4/20

$405

Sat 7/196:00 amYUL - SEA

2 stops9h 11mDelta

Sun 7/275:40 pmSEA - YUL

2 stops15h 35mDelta

Deal found 4/22

$476

Sat 6/145:29 pmYUL - SEA

1 stop19h 35mAmerican Airlines

Mon 6/1612:05 amSEA - YUL

1 stop13h 39mAmerican Airlines

Deal found 4/22

$511

Best flights from Pierre Elliott Trudeau Intl to Seattle
Discover carefully curated flight deals from Pierre Elliott Trudeau Intl to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 22, 2025.

Sat 8/305:30 pmYUL - SEA

1 stop29h 58mWestJet

Mon 9/17:05 amSEA - YUL

1 stop14h 36mWestJet

Deal found 4/22

$347

Sat 5/310:00 amYUL - SEA

2 stops13h 42mMultiple Airlines

Tue 5/62:05 pmSEA - YUL

1 stop7h 38mMultiple Airlines

Deal found 4/22

$359

Thu 5/224:45 pmYUL - SEA

Nonstop5h 52mAir Canada

Thu 5/297:20 amSEA - YUL

Nonstop5h 10mAir Canada

Deal found 4/22

$428

Sat 7/196:00 amYUL - SEA

2 stops9h 11mDelta

Sun 7/275:40 pmSEA - YUL

2 stops15h 35mDelta

Deal found 4/22

$476

Tue 6/105:29 pmYUL - SEA

1 stop19h 35mAmerican Airlines

Mon 6/1612:05 amSEA - YUL

1 stop13h 39mAmerican Airlines

Deal found 4/22

$478

Fri 5/164:45 pmYUL - SEA

Nonstop5h 52mUnited Airlines

Fri 5/307:20 amSEA - YUL

Nonstop5h 10mUnited Airlines

Deal found 4/22

$534

Last-minute flights from Pierre Elliott Trudeau Intl to Seattle
Discover last-minute flight deals from Pierre Elliott Trudeau Intl to Seattle. Data last updated April 22, 2025 and is based on user searches.

Mon 4/286:45 amYUL - SEA

2 stops33h 13mWestJet

Thu 5/11:50 pmSEA - YUL

2 stops31h 47mWestJet

Deal found 4/21

$447

Mon 4/282:15 pmYUL - SEA

1 stop10h 26mAir Canada

Thu 5/17:20 amSEA - YUL

Nonstop5h 10mAir Canada

Deal found 4/21

$512

Thu 5/110:00 amYUL - SEA

2 stops13h 42mMultiple Airlines

Mon 6/22:05 pmSEA - YUL

1 stop7h 38mMultiple Airlines

Deal found 4/21

$449

Thu 5/112:38 pmYUL - SEA

1 stop9h 56mDelta

Thu 5/299:30 pmSEA - YUL

1 stop11h 09mDelta

Deal found 4/21

$744

Fri 5/24:45 pmYUL - SEA

Nonstop5h 52mUnited Airlines

Fri 5/911:59 pmSEA - YUL

1 stop11h 55mUnited Airlines

Deal found 4/21

$854

Fri 5/212:30 pmYUL - SEA

1 stop13h 39mAmerican Airlines

Thu 5/81:10 amSEA - YUL

1 stop10h 44mAmerican Airlines

Deal found 4/21

$864

Mon 5/56:45 amYUL - SEA

2 stops16h 57mMultiple Airlines

Fri 5/301:15 pmSEA - YUL

1 stop21h 58mMultiple Airlines

Deal found 4/21

$355

Mon 5/511:20 amYUL - SEA

2 stops14h 00mDelta

Mon 6/211:50 pmSEA - YUL

2 stops13h 14mDelta

Deal found 4/21

$534

Mon 5/54:00 pmYUL - SEA

2 stops21h 15mAmerican Airlines

Thu 5/295:45 pmSEA - YUL

2 stops25h 59mAmerican Airlines

Deal found 4/21

$559

Mon 5/124:45 pmYUL - SEA

Nonstop5h 52mAir Canada

Mon 5/197:20 amSEA - YUL

Nonstop5h 10mAir Canada

Deal found 4/20

$376

Mon 5/128:05 amYUL - SEA

2 stops16h 26mUnited Airlines

Mon 5/197:20 amSEA - YUL

Nonstop5h 10mUnited Airlines

Deal found 4/20

$382

Wed 5/216:45 amYUL - SEA

2 stops15h 25mWestJet

Tue 7/157:35 pmSEA - YUL

2 stops26h 02mWestJet

Deal found 4/21

$352

One-way flights from Pierre Elliott Trudeau Intl to Seattle
Search for one-way flight options from Pierre Elliott Trudeau Intl to Seattle. Find affordable one-way fares based on user searches. Data last updated April 22, 2025.

Wed 8/207:00 amYUL - SEA

1 stop8h 58mWestJet

Deal found 4/21

$149

Thu 5/1510:00 amYUL - SEA

2 stops13h 42mMultiple Airlines

Deal found 4/21

$180

Wed 8/205:45 pmYUL - SEA

Nonstop5h 56mAir Canada

Deal found 4/21

$202

Mon 6/235:29 pmYUL - SEA

1 stop19h 35mAmerican Airlines

Deal found 4/22

$269

Fri 6/206:00 amYUL - SEA

2 stops20h 58mDelta

Deal found 4/21

$279

Wed 5/289:15 amYUL - SEA

1 stop9h 23mUnited Airlines

Deal found 4/21

$299

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 7/1

6:45 am-8:28 pm

2 stops16h 43m

Seattle/Tacoma Intl

Tue 7/8

7:35 pm-12:43 am

1 stop26h 08m

$347

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Mon 5/5

6:45 am-8:42 pm

2 stops16h 57m

Seattle/Tacoma Intl

Fri 5/30

1:15 pm-2:13 pm

1 stop21h 58m

$355

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sun 6/1

4:45 pm-7:37 pm

Nonstop5h 52m

Seattle/Tacoma Intl

Sat 6/7

11:40 am-12:41 am

1 stop10h 01m

$359

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 7/1

8:05 am-12:59 am

1 stop19h 54m

Seattle/Tacoma Intl

Tue 7/8

7:20 am-3:29 pm

Nonstop5h 09m

$374

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sun 6/1

4:45 pm-7:37 pm

Nonstop5h 52m

Seattle/Tacoma Intl

Sat 6/7

7:20 am-3:30 pm

Nonstop5h 10m

$405

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 7/19

6:00 am-12:11 pm

2 stops9h 11m

Seattle/Tacoma Intl

Sun 7/27

5:40 pm-12:15 pm

2 stops15h 35m

$476

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 6/14

5:29 pm-10:04 am

1 stop19h 35m

Seattle/Tacoma Intl

Mon 6/16

12:05 am-4:44 pm

1 stop13h 39m

$511

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 8/20

7:00 am-12:58 pm

1 stop8h 58m

$149

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 5/15

10:00 am-8:42 pm

2 stops13h 42m

$180

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 8/20

5:45 pm-8:41 pm

Nonstop5h 56m

$202

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

Showing 1-10 of 13 results

Compare providers for flights from Pierre Elliott Trudeau Intl to Seattle

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Pierre Elliott Trudeau Intl to Seattle in April.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
oojo	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
Trip.com	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Montreal Pierre Elliott Trudeau Intl Airport-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Montreal Pierre Elliott Trudeau Intl Airport-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Montreal Pierre Elliott Trudeau Intl Airport-Seattle flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Montreal Pierre Elliott Trudeau Intl Airport-Seattle flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Montreal Pierre Elliott Trudeau Intl Airport-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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.

Cheapflights Insights

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

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

To ensure you get the cheapest price possible for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle, you should look to book at least 37 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 $238). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle in July is currently the most expensive (average of $411). 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?

Unlike in the morning, when flights are generally more expensive, you can save up to 13% on flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle by exploring options for tickets in the afternoon.

Rainfall in Seattle by month

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Read reviews from past customers who have flown Delta, United Airlines and American Airlines from Montreal to Seattle. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,920 reviews

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

7,920 reviews

Delta

8.0

Very good

7,920 reviews

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

8,683 reviews

Delta

8.0

Very good

7,920 reviews

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

7,920 reviews

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

2,813 reviews

Delta

8.0

Very good

7,920 reviews

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

9,180 reviews

Delta

8.0

Very good

7,920 reviews

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

What airport do you fly into for flights to Seattle from Montreal Pierre Elliott Trudeau Intl?
Most people fly into Seattle/Tacoma Intl (SEA) if they book a flight to Seattle from Montreal Pierre Elliott Trudeau Intl. On average, Seattle/Tacoma Intl has 0 inbound flights from Montreal Pierre Elliott Trudeau Intl per day from 3 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.
What are the cheapest airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle round-trip?
Cheapflights users have booked flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle round-trip from $347. Other airlines that can offer you cheap pricing are Air Canada, from $428, and Delta, from $476. WestJet is currently priced 32% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Montreal Pierre Elliott Trudeau Intl Airport to Seattle one-way?
The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $149. However, be on the lookout for offers from Air Canada and American Airlines, as they are both options that can get you from Montreal Pierre Elliott Trudeau Intl Airport to Seattle for a low price.
What are the cheapest flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?
On average you can expect to pay $425 for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle. The cheapest flight overall is $192 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - Seattle/Tacoma Intl) is currently priced at $328.
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 $238). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle in July is currently the most expensive (average of $411). 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

SeaTac

Tukwila

Tacoma

Renton

Lakewood

Ocean Shores

Lacey

Leavenworth

Federal Way

Olympia

Shoreline

Cle Elum

Centralia

Kent

Aberdeen

Lynnwood

Shelton

Silverdale

Redmond

Issaquah

Browse thousands of different options on Cheapflights for your next trip

Other flights to Seattle

Top 3 airlines flying from Pierre Elliott Trudeau Intl to Seattle

Airline	Cheapest	Average	Flexibility	On-time
WestJet	Cheapest$270	Average$463	FlexibilityNo cancel fee	On-time60%
Air Canada	Cheapest$394	Average$575	FlexibilityNo cancel fee	On-time67%
Delta	Cheapest$474	Average$655	FlexibilityNo cancel fee	On-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$149+ Cheap flights from Pierre Elliott Trudeau Intl (YUL) to Seattle (SEA)

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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Pierre Elliott Trudeau Intl to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to Seattle/Tacoma Intl are usually found in October or September, booked 37 days in advance, depart on a Wednesday or Thursday and return on a Thursday

Cheap flight deals from Pierre Elliott Trudeau Intl to Seattle

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Pierre Elliott Trudeau Intl to Seattle

Cheapest flights from Pierre Elliott Trudeau Intl to SeattleExplore 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 April 22, 2025.

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 April 22, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from Pierre Elliott Trudeau Intl to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Pierre Elliott Trudeau Intl to Seattle in April.

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.

Cheapflights Insights

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

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 April 18, 2025.

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

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 April 22, 2025.

Rainfall in Seattle by month

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

Temperature in Seattle by month

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

Reviews of airlines servicing Seattle

Read reviews from past customers who have flown Delta, United Airlines and American Airlines from Montreal to Seattle. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

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

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

How can I 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?

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Pierre Elliott Trudeau Intl to Seattle

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

Top 3 airlines flying from Pierre Elliott Trudeau Intl to Seattle

100% Free

Book with Flexibility

Travel Smart

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 April 22, 2025.