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

For one-way options, check prices for WestJet. According to our data, you can fly for as low as $154. Users have also found prices from $178 and $234 on Sun Country Air and Delta, respectively.

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

Before booking your flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport check out the most popular airlines for this route: American Airlines, Air Canada or Delta.

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

Departing on a Wednesday is a good option for securing a great price. You can expect to save up to 22% when planning your travel around this day of the week.

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

May is one of the best times of the year to fly to Montreal Pierre Elliott Trudeau Intl Airport from Seattle. Prices for May average $617 per person but you can even find prices for as low as $199. The most expensive prices can be found in the month of February. Opting for a May flight can save you 28% on your journey compared to booking in February

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

Most trusted provider : When it comes to deals on Seattle-Montreal Pierre Elliott Trudeau Intl Airport 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 Seattle-Montreal Pierre Elliott Trudeau Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Montreal Pierre Elliott Trudeau Intl. On average, Seattle/Tacoma Intl has 0 outbound flights to Montreal Pierre Elliott Trudeau Intl per day from 5 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

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.

$154+ Flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport

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

Find cheap flights from Seattle to Pierre Elliott Trudeau Intl 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 Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl are usually found in May or June, booked 42 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap flight deals from Seattle to Pierre Elliott Trudeau Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$324 (Kiwi.com)
One-way from	$154 (Kiwi.com)
Popular in	December
Cheapest in	May
Average price	$608
Good round-trip deal	$468 or less
Good one-way deal	$192 or less

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

Search Deals

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

Search Deals

From Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl

Search Deals

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

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($42 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($10 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 Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl.

Search Deals

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

Search Deals

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 April 29, 2025.

Thu 9/111:50 pmSEA - YUL

1 stop7h 51mWestJet

Tue 9/167:00 amYUL - SEA

1 stop8h 59mWestJet

Deal found 4/27

$324

Thu 5/2910:49 amSEA - YUL

2 stops34h 48mMultiple Airlines

Tue 6/37:00 amYUL - SEA

1 stop8h 58mMultiple Airlines

Deal found 4/27

$333

Wed 7/211:50 pmSEA - YUL

2 stops13h 17mDelta

Thu 7/2411:00 amYUL - SEA

2 stops14h 21mDelta

Deal found 4/28

$530

Mon 5/195:30 amSEA - YUL

1 stop23h 15mAir Canada

Sun 5/254:45 pmYUL - SEA

Nonstop5h 52mAir Canada

Deal found 4/28

$544

Tue 7/111:55 pmSEA - YUL

2 stops13h 50mAmerican Airlines

Tue 7/2210:30 amYUL - SEA

2 stops17h 13mAmerican Airlines

Deal found 4/28

$570

Best flights from Seattle to Pierre Elliott Trudeau Intl
Discover carefully curated flight deals from Seattle to Pierre Elliott Trudeau Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 29, 2025.

Thu 5/291:50 pmSEA - YUL

1 stop7h 53mWestJet

Tue 6/37:00 amYUL - SEA

1 stop8h 58mWestJet

Deal found 4/27

$324

Thu 5/2910:49 amSEA - YUL

2 stops34h 48mMultiple Airlines

Tue 6/37:00 amYUL - SEA

1 stop8h 58mMultiple Airlines

Deal found 4/27

$333

Wed 7/211:50 pmSEA - YUL

2 stops13h 17mDelta

Thu 7/2411:00 amYUL - SEA

2 stops14h 21mDelta

Deal found 4/28

$530

Mon 5/195:30 amSEA - YUL

1 stop23h 15mAir Canada

Sun 5/254:45 pmYUL - SEA

Nonstop5h 52mAir Canada

Deal found 4/28

$544

Tue 7/111:55 pmSEA - YUL

2 stops13h 50mAmerican Airlines

Tue 7/2210:30 amYUL - SEA

2 stops17h 13mAmerican Airlines

Deal found 4/28

$570

Last-minute flights from Seattle to Pierre Elliott Trudeau Intl
Discover last-minute flight deals from Seattle to Pierre Elliott Trudeau Intl. Data last updated April 29, 2025 and is based on user searches.

Wed 5/75:18 pmSEA - YUL

2 stops16h 51mUnited Airlines

Mon 5/128:20 amYUL - SEA

1 stop17h 22mUnited Airlines

Deal found 4/29

$923

Thu 5/811:40 amSEA - YUL

2 stops19h 25mDelta

Sat 5/176:10 amYUL - SEA

2 stops11h 21mDelta

Deal found 4/28

$767

Fri 5/95:59 pmSEA - YUL

3 stops20h 56mMultiple Airlines

Sat 5/1710:00 amYUL - SEA

2 stops13h 42mMultiple Airlines

Deal found 4/28

$505

Fri 5/91:50 pmSEA - YUL

1 stop7h 53mWestJet

Sun 5/187:00 amYUL - SEA

1 stop8h 58mWestJet

Deal found 4/28

$733

Fri 5/97:20 amSEA - YUL

Nonstop5h 10mAir Canada

Sat 5/174:45 pmYUL - SEA

Nonstop5h 52mAir Canada

Deal found 4/28

$996

Mon 5/195:30 amSEA - YUL

1 stop23h 15mAir Canada

Sun 5/254:45 pmYUL - SEA

Nonstop5h 52mAir Canada

Deal found 4/28

$544

Mon 5/197:55 pmSEA - YUL

2 stops13h 05mDelta

Sun 5/256:15 amYUL - SEA

2 stops11h 50mDelta

Deal found 4/28

$545

Mon 5/197:33 pmSEA - YUL

2 stops11h 55mUnited Airlines

Thu 5/291:15 pmYUL - SEA

2 stops12h 15mUnited Airlines

Deal found 4/28

$780

Sun 5/251:10 amSEA - YUL

1 stop10h 44mAmerican Airlines

Mon 6/212:30 pmYUL - SEA

1 stop13h 39mAmerican Airlines

Deal found 4/28

$657

Thu 5/291:50 pmSEA - YUL

1 stop7h 53mWestJet

Tue 6/37:00 amYUL - SEA

1 stop8h 58mWestJet

Deal found 4/27

$324

Thu 5/2910:49 amSEA - YUL

2 stops34h 48mMultiple Airlines

Tue 6/37:00 amYUL - SEA

1 stop8h 58mMultiple Airlines

Deal found 4/27

$333

One-way flights from Seattle to Pierre Elliott Trudeau Intl
Search for one-way flight options from Seattle to Pierre Elliott Trudeau Intl. Find affordable one-way fares based on user searches. Data last updated April 29, 2025.

Sun 6/82:05 pmSEA - YUL

1 stop7h 38mWestJet

Deal found 4/27

$154

Tue 5/2710:49 amSEA - YUL

2 stops34h 48mMultiple Airlines

Deal found 4/28

$156

Wed 6/116:24 pmSEA - YUL

1 stop15h 06mSun Country Air

Deal found 4/28

$178

Wed 6/115:55 amSEA - YUL

2 stops12h 25mDelta

Deal found 4/28

$234

Tue 5/272:20 pmSEA - YUL

1 stop18h 24mAmerican Airlines

Deal found 4/28

$250

Tue 7/112:20 amSEA - YUL

1 stop14h 06mUnited Airlines

Deal found 4/28

$301

Tue 5/277:20 amSEA - YUL

Nonstop5h 10mAir Canada

Deal found 4/28

$330

Sat 5/312:59 amSEA - YUL

1 stop10h 56mWestJet Encore

Deal found 4/28

$710

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.

Fly from

Fly to

Route

Depart

Return

Price

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 9/11

1:50 pm-12:41 am

1 stop7h 51m

Montreal Pierre Elliott Trudeau Intl

Tue 9/16

7:00 am-12:59 pm

1 stop8h 59m

$324

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 5/29

10:49 am-12:37 am

2 stops34h 48m

Montreal Pierre Elliott Trudeau Intl

Tue 6/3

7:00 am-12:58 pm

1 stop8h 58m

$333

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 7/2

11:50 pm-4:07 pm

2 stops13h 17m

Montreal Pierre Elliott Trudeau Intl

Thu 7/24

11:00 am-10:21 pm

2 stops14h 21m

$530

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 5/19

5:30 am-7:45 am

1 stop23h 15m

Montreal Pierre Elliott Trudeau Intl

Sun 5/25

4:45 pm-7:37 pm

Nonstop5h 52m

$544

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 7/1

11:55 pm-4:45 pm

2 stops13h 50m

Montreal Pierre Elliott Trudeau Intl

Tue 7/22

10:30 am-12:43 am

2 stops17h 13m

$570

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 5/28

6:00 am-12:37 am

3 stops39h 37m

$154

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 6/11

6:24 pm-12:30 pm

1 stop15h 06m

$178

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Sat 6/7

7:05 am-12:43 am

1 stop14h 38m

$186

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 6/11

5:55 am-9:20 pm

2 stops12h 25m

$234

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 5/27

2:20 pm-11:44 am

1 stop18h 24m

$250

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 14 results

Compare providers for flights from Seattle to Pierre Elliott Trudeau Intl

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

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
eDreams	Price Accuracy3 stars	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 Seattle-Montreal Pierre Elliott Trudeau Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Montreal Pierre Elliott Trudeau Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Montreal Pierre Elliott Trudeau Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Seattle-Montreal Pierre Elliott Trudeau Intl Airport 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 Seattle-Montreal Pierre Elliott Trudeau Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Montreal Pierre Elliott Trudeau Intl Airport trip

Airports

SEA

Plan to arrive at SEA at least two hours before your flight. Use SEA Spot Saver for free security appointments to reduce wait times.

YUL

Use the ArriveCAN app to fill out your arrival declaration card before landing at YUL to avoid lines at passport control.

Our travel experts

John Walton

Expert on YUL

Brandon Schultz

Expert on SEA

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?

The best time to book flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport is 42 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 Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport (average of $270). Flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport in July is currently the most expensive (average of $409). 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?

When flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 71% versus a flight in the morning.

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

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

Rainfall in Pierre Elliott Trudeau Intl by month

In terms of precipitation, rainfall in Montreal Pierre Elliott Trudeau Intl Airport ranges from 2.5 - 4.4 inches per month. August is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Montreal Pierre Elliott Trudeau Intl Airport when rainfall is around 2.5 in.

Temperature in Pierre Elliott Trudeau Intl 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 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

Reviews of airlines servicing Pierre Elliott Trudeau Intl

Read through reviews of airlines operating flights from Seattle to Montreal, such as Delta, United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,929 reviews

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

7,929 reviews

Delta

8.0

Very good

7,929 reviews

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

8,696 reviews

Delta

8.0

Very good

7,929 reviews

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

7,929 reviews

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

2,823 reviews

Delta

8.0

Very good

7,929 reviews

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

9,228 reviews

Delta

8.0

Very good

7,929 reviews

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

What airport do you fly from for flights from Seattle to Montreal Pierre Elliott Trudeau Intl?
Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Montreal Pierre Elliott Trudeau Intl. On average, Seattle/Tacoma Intl has 0 outbound flights to Montreal Pierre Elliott Trudeau Intl per day from 5 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.
What are the cheapest airlines flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport round-trip?
Currently priced at $324, WestJet will fly you from Seattle to Montreal Pierre Elliott Trudeau Intl Airport and back. In addition to WestJet, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Air Canada - these airlines can fly you to your destination from $530 and $544, respectively. WestJet is 41% 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?
For one-way options, check prices for WestJet. According to our data, you can fly for as low as $154. Users have also found prices from $178 and $234 on Sun Country Air and Delta, respectively.
What are the cheapest flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?
While on average a flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport is generally $1,112, our data shows the cheapest flight currently is $103. When looking at the most popular route, (Seattle/Tacoma Intl - Montreal Pierre Elliott Trudeau Intl), you can expect to pay $340 for that flight.
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, January is the cheapest month in which you can book a flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport (average of $270). Flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport in July is currently the most expensive (average of $409). 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

Laval

Dorval

Brossard

Longueuil

Sherbrooke

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Seattle to Pierre Elliott Trudeau Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$228	Average$608	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$260	Average$590	FlexibilityNo cancel fee	On-time67%
WestJet	Cheapest$289	Average$459	FlexibilityNo cancel fee	On-time60%
Delta	Cheapest$455	Average$656	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$483	Average$668	FlexibilityNo cancel fee	On-time71%

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.

$154+ Cheap flights from Seattle (SEA) to Pierre Elliott Trudeau Intl (YUL)

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 6/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Pierre Elliott Trudeau Intl 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 Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl are usually found in May or June, booked 42 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap flight deals from Seattle to Pierre Elliott Trudeau Intl

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 Seattle to Pierre Elliott Trudeau Intl

Cheapest flights from Seattle to Pierre Elliott Trudeau IntlExplore 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 April 29, 2025.

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 April 29, 2025.

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.

Compare providers for flights from Seattle to Pierre Elliott Trudeau Intl

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 Seattle to Pierre Elliott Trudeau Intl in April.

The best insider tips for Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Montreal Pierre Elliott Trudeau Intl Airport trip

Airports

SEA

YUL

Our travel experts

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.

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 April 25, 2025.

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

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 April 29, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to Pierre Elliott Trudeau Intl. Price data was last updated on March 30, 2025.

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.

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.

Reviews of airlines servicing Pierre Elliott Trudeau Intl

Read through reviews of airlines operating flights from Seattle to Montreal, such as Delta, United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

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

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

How can I 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?

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

Traveling to a place near Seattle?

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 Seattle to Pierre Elliott Trudeau Intl

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

Top 5 airlines flying from Seattle to Pierre Elliott Trudeau Intl

100% Free

Book with Flexibility

Travel Smart

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 April 29, 2025.