What’s the cheapest layover airport for flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

Calgary (YYC) is the most affordable 1-stop option, with an average round-trip price of C$ 590.

Which airport typically offers the quickest layover for flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

Flights via Vancouver (YVR) offer the fastest connection on this route, with an average layover time of 2h 04m.

What’s the fastest layover option from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

Flights via Vancouver (YVR) have the shortest average one-way travel time for 1-stop routes: 8h 50m.

What’s the top layover airport for flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

Calgary (YYC) – chosen by Cheapflights users on 53% of one-stop itineraries from Montreal Pierre Elliott Trudeau Intl Airport to Seattle on Cheapflights.

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.

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).

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

When booking a flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle, you may want to consider flying on Air Canada, WestJet or United Airlines as they are the most popular for this route.

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.

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.

C$ 221+ Cheap Flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle

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

Cheap flight deals from Pierre Elliott Trudeau Intl to Seattle

Round-trip from	C$ 506
One-way from	C$ 221
Popular in	December
Cheapest in	September
Average price	C$ 645
Good round-trip deal	C$ 956 or less
Good one-way deal	C$ 463 or less

WestJet
4/12-11/12
2 total stops
34h 45m total
Montreal to Seattle

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WestJet
14/1
1 total stop
21h 50m total
Montreal to Seattle

Search Deals

Highest demand for flights based on searches. 7% potential increase in price (C$ 77 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 26 potential savings vs. average RT price).

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Average for round-trip flights in October 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

Enter your travel dates to find the best prices.

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 28 October 2025.

Thu 4/127:30 p.m.YUL - SEA

1 stop21h 50mWestJet

Sun 7/123:10 p.m.SEA - YUL

1 stop12h 55mWestJet

Deal found 27/10C$ 516

Wed 24/124:35 p.m.YUL - SEA

2 stops44h 36mMultiple Airlines

Fri 9/13:10 p.m.SEA - YUL

1 stop12h 55mMultiple Airlines

Deal found 26/10C$ 523

Thu 4/127:30 p.m.YUL - SEA

1 stop21h 50mWestJet

Tue 9/123:10 p.m.SEA - YUL

1 stop12h 55mWestJet

Deal found 26/10C$ 524

Thu 4/126:45 a.m.YUL - SEA

2 stops30h 21mMultiple Airlines

Thu 11/1211:10 p.m.SEA - YUL

1 stop14h 17mMultiple Airlines

Deal found 26/10C$ 540

Thu 4/127:30 p.m.YUL - SEA

1 stop21h 50mWestJet

Thu 11/123:10 p.m.SEA - YUL

1 stop12h 55mWestJet

Deal found 26/10C$ 547

Thu 4/126:45 a.m.YUL - SEA

2 stops30h 21mMultiple Airlines

Tue 9/123:10 p.m.SEA - YUL

1 stop12h 55mMultiple Airlines

Deal found 26/10C$ 554

Thu 18/126:45 a.m.YUL - SEA

2 stops30h 26mMultiple Airlines

Fri 9/13:10 p.m.SEA - YUL

1 stop12h 55mMultiple Airlines

Deal found 26/10C$ 561

Wed 10/127:30 p.m.YUL - SEA

1 stop21h 50mWestJet

Wed 17/123:10 p.m.SEA - YUL

1 stop12h 55mWestJet

Deal found 26/10C$ 583

Mon 17/116:45 a.m.YUL - SEA

2 stops13h 21mMultiple Airlines

Sun 30/1111:10 p.m.SEA - YUL

1 stop14h 17mMultiple Airlines

Deal found 27/10C$ 589

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 28 October 2025.

Thu 4/127:30 p.m.YUL - SEA

1 stop21h 50mWestJet

Thu 11/123:10 p.m.SEA - YUL

1 stop12h 55mWestJet

Deal found 28/10C$ 506

Thu 4/126:45 a.m.YUL - SEA

2 stops30h 21mMultiple Airlines

Tue 9/123:10 p.m.SEA - YUL

1 stop12h 55mMultiple Airlines

Deal found 26/10C$ 554

Wed 10/127:10 a.m.YUL - SEA

2 stops14h 16mDelta

Wed 17/129:35 p.m.SEA - YUL

2 stops11h 25mDelta

Deal found 26/10C$ 606

Thu 4/127:30 p.m.YUL - SEA

1 stop21h 50mWestJet

Sun 7/123:10 p.m.SEA - YUL

1 stop12h 55mWestJet

Deal found 27/10C$ 516

Thu 19/26:45 a.m.YUL - SEA

1 stop15h 20mMultiple Airlines

Sat 21/211:10 p.m.SEA - YUL

1 stop14h 17mMultiple Airlines

Deal found 27/10C$ 565

Fri 5/127:00 a.m.YUL - SEA

1 stop13h 48mDelta

Sat 6/129:35 p.m.SEA - YUL

2 stops11h 25mDelta

Deal found 27/10C$ 610

Mon 17/116:45 a.m.YUL - SEA

2 stops13h 21mMultiple Airlines

Sun 30/1111:10 p.m.SEA - YUL

1 stop14h 17mMultiple Airlines

Deal found 27/10C$ 589

Wed 10/127:30 p.m.YUL - SEA

1 stop21h 50mWestJet

Wed 17/123:10 p.m.SEA - YUL

2 stops30h 33mWestJet

Deal found 26/10C$ 593

Mon 10/117:00 a.m.YUL - SEA

1 stop10h 37mDelta

Sun 16/116:00 a.m.SEA - YUL

1 stop8h 21mDelta

Deal found 27/10C$ 615

Fri 9/17:30 p.m.YUL - SEA

1 stop22h 08mMultiple Airlines

Tue 13/17:55 a.m.SEA - YUL

1 stop13h 48mMultiple Airlines

Deal found 27/10C$ 601

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 28 October 2025 and is based on user searches.

Mon 10/117:10 a.m.YUL - SEA

1 stop12h 50mDelta

Sun 16/116:00 a.m.SEA - YUL

1 stop8h 21mDelta

Deal found 27/10C$ 615

Mon 10/117:30 a.m.YUL - SEA

2 stops19h 12mAmerican Airlines

Sun 16/1111:20 p.m.SEA - YUL

1 stop9h 55mAmerican Airlines

Deal found 27/10C$ 691

Mon 17/116:45 a.m.YUL - SEA

2 stops13h 21mMultiple Airlines

Sun 30/1111:10 p.m.SEA - YUL

1 stop14h 17mMultiple Airlines

Deal found 27/10C$ 589

Tue 25/117:10 a.m.YUL - SEA

2 stops11h 25mDelta

Sat 29/119:28 a.m.SEA - YUL

1 stop11h 14mDelta

Deal found 27/10C$ 670

Tue 25/111:25 p.m.YUL - SEA

1 stop8h 51mAir Canada

Sat 29/115:50 a.m.SEA - YUL

1 stop8h 10mAir Canada

Deal found 26/10C$ 719

Tue 25/114:00 p.m.YUL - SEA

1 stop20h 45mAmerican Airlines

Fri 28/1112:55 a.m.SEA - YUL

1 stop11h 14mAmerican Airlines

Deal found 27/10C$ 727

Thu 27/117:10 a.m.YUL - SEA

1 stop8h 47mDelta

Sat 29/119:28 a.m.SEA - YUL

1 stop11h 14mDelta

Deal found 26/10C$ 715

Thu 27/117:14 a.m.YUL - SEA

2 stops19h 12mAmerican Airlines

Fri 28/1112:55 a.m.SEA - YUL

1 stop11h 14mAmerican Airlines

Deal found 26/10C$ 736

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 28 October 2025.

Wed 14/17:30 p.m.YUL - SEA

1 stop21h 50mWestJet

Deal found 28/10C$ 221

Wed 10/127:30 p.m.YUL - SEA

1 stop21h 50mWestJet

Deal found 25/10C$ 298

Thu 11/126:45 a.m.YUL - SEA

2 stops30h 21mMultiple Airlines

Deal found 28/10C$ 299

Wed 10/126:45 a.m.YUL - SEA

2 stops30h 21mMultiple Airlines

Deal found 28/10C$ 308

Sat 22/116:45 a.m.YUL - SEA

2 stops10h 55mMultiple Airlines

Deal found 27/10C$ 315

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

Thu 4/12

7:30 p.m.-2:20 p.m.

1 stop21h 50m

Seattle/Tacoma Intl

Thu 11/12

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

1 stop12h 55m

C$ 506

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 4/12

7:30 p.m.-2:20 p.m.

1 stop21h 50m

Seattle/Tacoma Intl

Sun 7/12

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

1 stop12h 55m

C$ 516

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 4/12

6:45 a.m.-10:06 a.m.

2 stops30h 21m

Seattle/Tacoma Intl

Tue 9/12

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

1 stop12h 55m

C$ 554

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 19/2

6:45 a.m.-7:05 p.m.

1 stop15h 20m

Seattle/Tacoma Intl

Sat 21/2

11:10 p.m.-4:27 p.m.

1 stop14h 17m

C$ 565

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Mon 17/11

6:45 a.m.-5:06 p.m.

2 stops13h 21m

Seattle/Tacoma Intl

Sun 30/11

11:10 p.m.-4:27 p.m.

1 stop14h 17m

C$ 589

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 10/12

7:30 p.m.-2:20 p.m.

1 stop21h 50m

Seattle/Tacoma Intl

Wed 17/12

3:10 p.m.-12:43 a.m.

2 stops30h 33m

C$ 593

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 9/1

7:30 p.m.-2:38 p.m.

1 stop22h 08m

Seattle/Tacoma Intl

Tue 13/1

7:55 a.m.-12:43 a.m.

1 stop13h 48m

C$ 601

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 10/12

7:10 a.m.-6:26 p.m.

2 stops14h 16m

Seattle/Tacoma Intl

Wed 17/12

9:35 p.m.-12:00 p.m.

2 stops11h 25m

C$ 606

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 5/12

7:00 a.m.-5:48 p.m.

1 stop13h 48m

Seattle/Tacoma Intl

Sat 6/12

9:35 p.m.-12:00 p.m.

2 stops11h 25m

C$ 610

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Mon 10/11

7:00 a.m.-2:37 p.m.

1 stop10h 37m

Seattle/Tacoma Intl

Sun 16/11

6:00 a.m.-5:21 p.m.

1 stop8h 21m

C$ 615

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/10

Showing 1-10 of 20 results

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

Prices

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

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, November is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle (average of C$ 284). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle in December is currently the most expensive (average of C$ 557). 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?

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 52% on the flight price compared to flying at noon, which is usually more expensive.

Reviews of airlines servicing Seattle

See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from Montreal Pierre Elliott Trudeau Intl Airport to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.9

Good

7,995 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!

Delta

7.9

Good

7,995 reviews

Delta

7.9

Good

7,995 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!

United Airlines

7.4

Good

8,996 reviews

Delta

7.9

Good

7,995 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!

American Airlines

7.2

Good

11,033 reviews

Delta

7.9

Good

7,995 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!

WestJet

7.2

Good

3,148 reviews

Delta

7.9

Good

7,995 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!

Air Canada

7.1

Good

10,370 reviews

Delta

7.9

Good

7,995 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Mary,Oct 2025

AMS - PDX

It's specail being able to fly non-stop from Amsterdam all the way home to Portland, Oregon!

Related info for your journey

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.
How long is the flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?
There are many flights that can get you from Montreal Pierre Elliott Trudeau Intl Airport to Seattle in 21h 50m. Fly via WestJet to get the fastest option. The distance between Montreal Pierre Elliott Trudeau Intl Airport and Seattle is about 3663 km.
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$ 373. Additional round-trip tickets that might be worth considering are offered by American Airlines and Delta, with the lowest prices starting at C$ 462 and C$ 503, respectively. WestJet is 46% cheaper than the average price of flights available within the next 90 days to this destination.
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$ 1,026, our data indicates the cheapest price to be C$ 463. The most popular route (Montreal Pierre Elliott Trudeau Intl - Seattle/Tacoma Intl), is priced around C$ 540.
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, November is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle (average of C$ 284). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle in December is currently the most expensive (average of C$ 557). 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

Leavenworth

SeaTac

Tukwila

Tacoma

Mukilteo

Bothell

Cashmere

Renton

Olympia

Marysville

Lynnwood

Browse thousands of different options on Cheapflights for your next trip

Other flights to Seattle

Top 5 airlines flying from Pierre Elliott Trudeau Intl to Seattle

Airline	Cheapest	Average	Flexibility	On-time
WestJet	CheapestC$ 373	AverageC$ 559	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
American Airlines	CheapestC$ 462	AverageC$ 567	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Delta	CheapestC$ 503	AverageC$ 574	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Air Canada	CheapestC$ 507	AverageC$ 705	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	CheapestC$ 542	AverageC$ 737	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

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How does Cheapflights help users find flights from Pierre Elliott Trudeau Intl to Seattle?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Seattle from Pierre Elliott Trudeau Intl today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Pierre Elliott Trudeau Intl to Seattle?

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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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle from C$ 221

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 14/1. Fares are subject to change and may not be available on all flights or dates of travel.

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

Cheap flight deals from Pierre Elliott Trudeau Intl to Seattle

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 28 October 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 28 October 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.

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?

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?

What’s the top layover airport for flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

What’s the fastest layover option from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

What’s the fastest layover option from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

Which airport typically offers the quickest layover for flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

Reviews of airlines servicing Seattle

See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from Montreal Pierre Elliott Trudeau Intl Airport to Seattle have to say. You can also see how each airline compares 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?

How long is the flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

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

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?

Travelling to a place near Seattle?

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Alternative routes for Pierre Elliott Trudeau Intl to Seattle

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Top 5 airlines flying from Pierre Elliott Trudeau Intl to Seattle

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How does Cheapflights help users find flights from Pierre Elliott Trudeau Intl to Seattle?

Why should you use Cheapflights to find cheap flight tickets from Pierre Elliott Trudeau Intl to Seattle?

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

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

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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 28 October 2025.