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$ 584.

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 46m.

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

Calgary (YYC) – chosen by Cheapflights users on 40% of one-stop itineraries from Montreal Pierre Elliott Trudeau Intl Airport to Seattle on Cheapflights.

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

Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 1h 19m.

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$ 288. Users have also found prices from C$ 302 and C$ 303 on American Airlines and Air Canada, respectively.

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 evenings 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.

Weekly flight availability from Montreal Pierre Elliott Trudeau Intl Airport to Seattle

The most flights from YUL to SEA are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

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 American Airlines, Air Canada or Delta as they are the most popular for this route.

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

Sunday flights are found to be more expensive to fly from Montreal Pierre Elliott Trudeau Intl Airport to Seattle. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Seattle.

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

Our data shows that September tends to be the cheapest month to fly to Seattle from Montreal Pierre Elliott Trudeau Intl Airport. Users have commonly found prices around C$ 730 for the month, but tickets can be as low as C$ 457. Due to multiple factors, prepare for potentially higher prices in December.

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 2 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$ 287+ 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 October or July, booked 37 days in advance, depart on a Wednesday or Friday and return on a Friday

Cheap flight deals from Pierre Elliott Trudeau Intl to Seattle

Round-trip from	C$ 399
One-way from	C$ 287
Popular in	December
Cheapest in	October
Average price	C$ 661
Good round-trip deal	C$ 557 or less
Good one-way deal	C$ 510 or less

WestJet
7/12-12/12
2 total stops
34h 45m total
Montreal to Seattle

Search Deals

14/11
2 total stops
14h 47m total
Montreal to Seattle

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (C$ 70 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 25 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 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 11 September 2025.

Sun 7/127:30 p.m.YUL - SEA

1 stop21h 50mWestJet

Fri 12/123:10 p.m.SEA - YUL

1 stop12h 55mWestJet

Deal found 10/9C$ 399

Sat 27/97:00 a.m.YUL - SEA

1 stop15h 21mWestJet

Mon 29/98:40 a.m.SEA - YUL

2 stops12h 47mWestJet

Deal found 10/9C$ 400

Sat 6/126:45 a.m.YUL - SEA

2 stops34h 35mWestJet

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

1 stop12h 55mWestJet

Deal found 10/9C$ 407

Sun 26/106:45 a.m.YUL - SEA

2 stops34h 35mWestJet

Sun 2/113:10 p.m.SEA - YUL

1 stop21h 02mWestJet

Deal found 11/9C$ 423

Sun 7/126:45 a.m.YUL - SEA

2 stops34h 35mWestJet

Sun 14/123:10 p.m.SEA - YUL

1 stop12h 55mWestJet

Deal found 10/9C$ 431

Sun 7/126:45 a.m.YUL - SEA

2 stops34h 35mWestJet

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

1 stop12h 55mWestJet

Deal found 10/9C$ 441

Mon 20/106:45 a.m.YUL - SEA

2 stops33h 14mWestJet

Thu 23/101:50 p.m.SEA - YUL

1 stop7h 51mWestJet

Deal found 11/9C$ 446

Sat 11/106:45 a.m.YUL - SEA

2 stops32h 50mMultiple Airlines

Tue 11/113:10 p.m.SEA - YUL

1 stop19h 22mMultiple Airlines

Deal found 10/9C$ 471

Sun 5/106:45 a.m.YUL - SEA

2 stops40h 44mWestJet

Tue 14/107:05 a.m.SEA - YUL

1 stop14h 36mWestJet

Deal found 11/9C$ 475

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 11 September 2025.

Sat 27/97:00 a.m.YUL - SEA

1 stop15h 21mWestJet

Mon 29/98:40 a.m.SEA - YUL

2 stops12h 47mWestJet

Deal found 10/9C$ 400

Tue 30/96:15 a.m.YUL - SEA

2 stops15h 30mUnited Airlines

Wed 29/107:13 p.m.SEA - YUL

2 stops17h 03mUnited Airlines

Deal found 9/9C$ 507

Sun 26/106:00 p.m.YUL - SEA

1 stop23h 20mMultiple Airlines

Sun 2/113:10 p.m.SEA - YUL

1 stop19h 22mMultiple Airlines

Deal found 11/9C$ 540

Sat 4/107:30 a.m.YUL - SEA

1 stop9h 46mAir Canada

Mon 13/107:15 a.m.SEA - YUL

Nonstop5h 13mAir Canada

Deal found 11/9C$ 554

Mon 20/106:45 a.m.YUL - SEA

2 stops33h 14mWestJet

Thu 23/108:40 a.m.SEA - YUL

2 stops12h 47mWestJet

Deal found 11/9C$ 453

Thu 2/104:45 p.m.YUL - SEA

Nonstop5h 46mUnited Airlines

Mon 6/105:26 p.m.SEA - YUL

1 stop10h 27mUnited Airlines

Deal found 9/9C$ 535

Fri 3/109:45 a.m.YUL - SEA

1 stop9h 00mMultiple Airlines

Mon 13/105:30 a.m.SEA - YUL

1 stop8h 06mMultiple Airlines

Deal found 11/9C$ 554

Thu 2/109:45 a.m.YUL - SEA

1 stop9h 00mUnited Airlines

Sun 5/107:00 a.m.SEA - YUL

1 stop7h 26mUnited Airlines

Deal found 11/9C$ 554

Sat 4/109:45 a.m.YUL - SEA

1 stop9h 00mUnited Airlines

Tue 14/1011:40 p.m.SEA - YUL

1 stop8h 00mUnited Airlines

Deal found 11/9C$ 554

Thu 2/109:45 a.m.YUL - SEA

1 stop9h 00mUnited Airlines

Tue 14/1011:40 p.m.SEA - YUL

1 stop8h 00mUnited Airlines

Deal found 11/9C$ 554

Direct flights from Pierre Elliott Trudeau Intl to Seattle
Explore direct flight options from Pierre Elliott Trudeau Intl to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 11 September 2025.

Thu 2/104:45 p.m.YUL - SEA

Nonstop5h 46mAir Canada

Tue 14/107:15 a.m.SEA - YUL

Nonstop5h 13mAir Canada

Deal found 11/9C$ 554

Wed 1/104:45 p.m.YUL - SEA

Nonstop5h 46mAir Canada

Mon 13/107:15 a.m.SEA - YUL

Nonstop5h 13mAir Canada

Deal found 10/9C$ 556

Thu 2/104:45 p.m.YUL - SEA

Nonstop5h 46mUnited Airlines

Wed 8/107:15 a.m.SEA - YUL

Nonstop5h 13mUnited Airlines

Deal found 10/9C$ 615

Mon 6/104:45 p.m.YUL - SEA

Nonstop5h 46mAir Canada

Wed 8/107:15 a.m.SEA - YUL

Nonstop5h 13mAir Canada

Deal found 10/9C$ 661

Fri 3/104:45 p.m.YUL - SEA

Nonstop5h 46mAir Canada

Tue 14/107:15 a.m.SEA - YUL

Nonstop5h 13mAir Canada

Deal found 11/9C$ 672

Fri 3/104:45 p.m.YUL - SEA

Nonstop5h 46mAir Canada

Mon 13/107:15 a.m.SEA - YUL

Nonstop5h 13mAir Canada

Deal found 10/9C$ 673

Tue 30/94:45 p.m.YUL - SEA

Nonstop5h 46mAir Canada

Tue 14/107:15 a.m.SEA - YUL

Nonstop5h 13mAir Canada

Deal found 11/9C$ 696

Tue 30/94:45 p.m.YUL - SEA

Nonstop5h 46mAir Canada

Mon 13/107:15 a.m.SEA - YUL

Nonstop5h 13mAir Canada

Deal found 10/9C$ 698

Thu 2/104:45 p.m.YUL - SEA

Nonstop5h 46mUnited Airlines

Mon 6/107:15 a.m.SEA - YUL

Nonstop5h 13mUnited Airlines

Deal found 9/9C$ 773

Thu 2/104:45 p.m.YUL - SEA

Nonstop5h 46mAir Canada

Mon 6/107:15 a.m.SEA - YUL

Nonstop5h 13mAir Canada

Deal found 10/9C$ 808

Sat 27/94:45 p.m.YUL - SEA

Nonstop5h 46mAir Canada

Mon 29/97:15 a.m.SEA - YUL

Nonstop5h 13mAir Canada

Deal found 11/9C$ 838

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 11 September 2025 and is based on user searches.

Sat 27/97:00 a.m.YUL - SEA

1 stop15h 21mWestJet

Mon 29/98:40 a.m.SEA - YUL

2 stops12h 47mWestJet

Deal found 10/9C$ 400

Tue 30/96:15 a.m.YUL - SEA

2 stops15h 30mUnited Airlines

Wed 29/107:13 p.m.SEA - YUL

2 stops17h 03mUnited Airlines

Deal found 9/9C$ 507

Thu 2/107:30 a.m.YUL - SEA

1 stop9h 46mAir Canada

Mon 6/1010:00 a.m.SEA - YUL

1 stop11h 36mAir Canada

Deal found 9/9C$ 493

Thu 2/109:45 a.m.YUL - SEA

1 stop9h 00mUnited Airlines

Mon 6/1011:10 p.m.SEA - YUL

2 stops14h 00mUnited Airlines

Deal found 9/9C$ 499

Sun 5/106:45 a.m.YUL - SEA

2 stops40h 44mWestJet

Tue 14/107:05 a.m.SEA - YUL

1 stop14h 36mWestJet

Deal found 11/9C$ 475

Tue 7/106:45 a.m.YUL - SEA

2 stops17h 25mMultiple Airlines

Tue 11/113:10 p.m.SEA - YUL

1 stop19h 22mMultiple Airlines

Deal found 10/9C$ 496

Wed 8/106:45 a.m.YUL - SEA

2 stops35h 31mMultiple Airlines

Fri 14/113:10 p.m.SEA - YUL

1 stop19h 22mMultiple Airlines

Deal found 10/9C$ 495

Sat 11/106:45 a.m.YUL - SEA

2 stops32h 50mMultiple Airlines

Tue 11/113:10 p.m.SEA - YUL

1 stop19h 22mMultiple Airlines

Deal found 10/9C$ 471

Sat 11/106:45 a.m.YUL - SEA

2 stops32h 50mMultiple Airlines

Wed 12/1111:10 p.m.SEA - YUL

1 stop14h 17mMultiple Airlines

Deal found 10/9C$ 500

Mon 20/106:45 a.m.YUL - SEA

2 stops33h 14mWestJet

Thu 23/101:50 p.m.SEA - YUL

1 stop7h 51mWestJet

Deal found 11/9C$ 446

Sun 26/106:45 a.m.YUL - SEA

2 stops34h 35mWestJet

Sun 2/113:10 p.m.SEA - YUL

1 stop21h 02mWestJet

Deal found 11/9C$ 423

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 11 September 2025.

Fri 14/116:45 a.m.YUL - SEA

2 stops14h 47mMultiple Airlines

Deal found 11/9C$ 287

Fri 31/106:45 a.m.YUL - SEA

2 stops34h 53mWestJet

Deal found 10/9C$ 288

Fri 14/114:15 p.m.YUL - SEA

1 stop25h 23mWestJet

Deal found 11/9C$ 294

Thu 23/106:45 a.m.YUL - SEA

2 stops15h 36mWestJet

Deal found 10/9C$ 298

Mon 6/105:24 p.m.YUL - SEA

1 stop19h 25mAmerican Airlines

Deal found 10/9C$ 302

Fri 10/106:00 a.m.YUL - SEA

1 stop7h 59mAir Canada

Deal found 11/9C$ 303

Thu 30/106:45 a.m.YUL - SEA

2 stops29h 33mMultiple Airlines

Deal found 10/9C$ 305

Fri 31/104:15 p.m.YUL - SEA

3 stops44h 03mMultiple Airlines

Deal found 10/9C$ 306

Tue 14/1012:30 p.m.YUL - SEA

1 stop14h 57mAmerican Airlines

Deal found 10/9C$ 308

Fri 24/109:45 a.m.YUL - SEA

1 stop9h 00mUnited Airlines

Deal found 11/9C$ 312

Fri 24/105:24 p.m.YUL - SEA

1 stop19h 24mAmerican Airlines

Deal found 10/9C$ 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

Sat 27/9

7:00 a.m.-7:21 p.m.

1 stop15h 21m

Seattle/Tacoma Intl

Mon 29/9

8:40 a.m.-12:27 a.m.

2 stops12h 47m

C$ 400

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Mon 20/10

6:45 a.m.-12:59 p.m.

2 stops33h 14m

Seattle/Tacoma Intl

Thu 23/10

8:40 a.m.-12:27 a.m.

2 stops12h 47m

C$ 453

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 30/9

6:15 a.m.-6:45 p.m.

2 stops15h 30m

Seattle/Tacoma Intl

Wed 29/10

7:13 p.m.-3:16 p.m.

2 stops17h 03m

C$ 507

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 2/10

4:45 p.m.-7:31 p.m.

Nonstop5h 46m

Seattle/Tacoma Intl

Mon 6/10

5:26 p.m.-6:53 a.m.

1 stop10h 27m

C$ 535

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sun 26/10

6:00 p.m.-2:20 p.m.

1 stop23h 20m

Seattle/Tacoma Intl

Sun 2/11

3:10 p.m.-1:32 p.m.

1 stop19h 22m

C$ 540

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 4/10

7:30 a.m.-2:16 p.m.

1 stop9h 46m

Seattle/Tacoma Intl

Mon 13/10

7:15 a.m.-3:28 p.m.

Nonstop5h 13m

C$ 554

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 3/10

9:45 a.m.-3:45 p.m.

1 stop9h 00m

Seattle/Tacoma Intl

Mon 13/10

5:30 a.m.-4:36 p.m.

1 stop8h 06m

C$ 554

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 2/10

9:45 a.m.-3:45 p.m.

1 stop9h 00m

Seattle/Tacoma Intl

Sun 5/10

7:00 a.m.-5:26 p.m.

1 stop7h 26m

C$ 554

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 4/10

9:45 a.m.-3:45 p.m.

1 stop9h 00m

Seattle/Tacoma Intl

Tue 14/10

11:40 p.m.-10:40 a.m.

1 stop8h 00m

C$ 554

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 2/10

9:45 a.m.-3:45 p.m.

1 stop9h 00m

Seattle/Tacoma Intl

Tue 14/10

11:40 p.m.-10:40 a.m.

1 stop8h 00m

C$ 554

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

Showing 1-10 of 19 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

Airlines

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, 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 December is currently the most expensive (average of C$ 353). 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 53% 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

8.0

Very good

7,960 reviews

Check prices

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Delta

8.0

Very good

7,960 reviews

Delta

8.0

Very good

7,960 reviews

Check prices

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

United Airlines

7.4

Good

8,937 reviews

Delta

8.0

Very good

7,960 reviews

Check prices

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,960 reviews

Check prices

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

WestJet

7.2

Good

3,091 reviews

Delta

8.0

Very good

7,960 reviews

Check prices

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Air Canada

7.1

Good

10,000 reviews

Delta

8.0

Very good

7,960 reviews

Check prices

Reviews

1 / 20

6.0

Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

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 2 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 15h 21m. Fly via WestJet or United Airlines to get the fastest option. The distance between Montreal Pierre Elliott Trudeau Intl Airport and Seattle is about 3663 km. This flight may include one or multiple stops.
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$ 369. Additional round-trip tickets that might be worth considering are offered by Delta and Air Canada, with the lowest prices starting at C$ 498 and C$ 510, respectively. WestJet is 47% 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$ 288. Users have also found prices from C$ 302 and C$ 303 on American Airlines and Air Canada, 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$ 653, our data indicates the cheapest price to be C$ 315. The most popular route (Montreal Pierre Elliott Trudeau Intl - Seattle/Tacoma Intl), is priced around C$ 403.
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 December is currently the most expensive (average of C$ 353). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Tukwila

Tacoma

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$ 369	AverageC$ 558	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
Delta	CheapestC$ 498	AverageC$ 626	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Air Canada	CheapestC$ 510	AverageC$ 705	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
American Airlines	CheapestC$ 531	AverageC$ 701	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
United Airlines	CheapestC$ 537	AverageC$ 731	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Fly with Cheapflights

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?

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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle from C$ 287

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 14/11. 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 October or July, booked 37 days in advance, depart on a Wednesday or Friday and return on a Friday

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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 11 September 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 11 September 2025.

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

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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.

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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 11 September 2025.