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 Monday 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.

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 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.

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).

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, October can be a great choice for travel to Seattle. Flights to Seattle from Montreal Pierre Elliott Trudeau Intl Airport in October are about $526 on average during October, but can be found for as low as $312.

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 2 inbound flights from Montreal Pierre Elliott Trudeau Intl per day from 2 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.

$172+ Cheap Flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle

Q: How much does it cost to fly round-trip from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

Airfare is below average for this route at the moment. Montreal Pierre Elliott Trudeau Intl Airport to Seattle flights typically cost between $397 and $586 in October. The cheapest round-trip price found within the last 3 days was $351 on Multiple Airlines (Oct 1-Oct 14).

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

Cheap flight deals from Pierre Elliott Trudeau Intl to Seattle

Round-trip from	$351 (Kiwi.com)
One-way from	$172 (KAYAK)
Popular in	December
Cheapest in	August
Average price	$463
Good round-trip deal	$361 or less
Good one-way deal	$270 or less

From Montreal Pierre Elliott Trudeau Intl to Seattle/Tacoma Intl

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

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Highest demand for flights based on searches. 6% potential increase in price ($35 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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

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

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Find flight deals from Pierre Elliott Trudeau Intl to Seattle

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

Wed 10/17:00 amYUL - SEA

1 stop10h 59mMultiple Airlines

Tue 10/142:05 pmSEA - YUL

2 stops21h 04mMultiple Airlines

Deal found 8/20

$351

Tue 9/307:00 amYUL - SEA

1 stop8h 59mMultiple Airlines

Tue 10/142:05 pmSEA - YUL

2 stops21h 04mMultiple Airlines

Deal found 8/20

$353

Wed 10/87:00 amYUL - SEA

1 stop8h 59mWestJet

Sat 10/118:40 amSEA - YUL

2 stops12h 47mWestJet

Deal found 8/19

$357

Fri 10/37:00 amYUL - SEA

1 stop10h 59mMultiple Airlines

Tue 10/142:05 pmSEA - YUL

2 stops21h 04mMultiple Airlines

Deal found 8/20

$367

Wed 10/16:45 amYUL - SEA

2 stops33h 14mWestJet

Wed 10/88:40 amSEA - YUL

2 stops12h 47mWestJet

Deal found 8/20

$369

Thu 9/117:30 amYUL - SEA

1 stop9h 46mAir Canada

Wed 9/172:55 pmSEA - YUL

2 stops13h 15mAir Canada

Deal found 8/20

$373

Sat 10/46:45 amYUL - SEA

2 stops32h 48mWestJet

Sun 10/128:40 amSEA - YUL

2 stops12h 47mWestJet

Deal found 8/19

$378

Thu 10/25:30 pmYUL - SEA

2 stops22h 03mWestJet

Tue 10/147:05 amSEA - YUL

2 stops14h 22mWestJet

Deal found 8/19

$379

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 August 20, 2025.

Wed 10/17:00 amYUL - SEA

1 stop10h 59mMultiple Airlines

Tue 10/142:05 pmSEA - YUL

2 stops21h 04mMultiple Airlines

Deal found 8/20

$351

Wed 10/87:00 amYUL - SEA

1 stop8h 59mWestJet

Sat 10/118:40 amSEA - YUL

2 stops12h 47mWestJet

Deal found 8/19

$357

Thu 9/117:30 amYUL - SEA

1 stop9h 46mAir Canada

Wed 9/172:55 pmSEA - YUL

2 stops13h 15mAir Canada

Deal found 8/20

$373

Tue 9/307:00 amYUL - SEA

1 stop8h 59mMultiple Airlines

Tue 10/142:05 pmSEA - YUL

2 stops21h 04mMultiple Airlines

Deal found 8/20

$353

Wed 10/16:45 amYUL - SEA

2 stops33h 14mWestJet

Wed 10/88:40 amSEA - YUL

2 stops12h 47mWestJet

Deal found 8/20

$369

Thu 10/27:00 amYUL - SEA

1 stop10h 59mMultiple Airlines

Tue 10/142:05 pmSEA - YUL

2 stops21h 04mMultiple Airlines

Deal found 8/20

$363

Sat 10/47:00 amYUL - SEA

1 stop10h 55mMultiple Airlines

Tue 10/142:05 pmSEA - YUL

2 stops21h 04mMultiple Airlines

Deal found 8/20

$367

Fri 10/37:00 amYUL - SEA

1 stop10h 59mMultiple Airlines

Tue 10/142:05 pmSEA - YUL

2 stops21h 04mMultiple Airlines

Deal found 8/20

$367

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 August 20, 2025 and is based on user searches.

Mon 9/84:45 pmYUL - SEA

Nonstop5h 46mAir Canada

Sun 9/142:55 pmSEA - YUL

2 stops13h 15mAir Canada

Deal found 8/18

$382

Thu 9/117:30 amYUL - SEA

1 stop9h 46mAir Canada

Wed 9/172:55 pmSEA - YUL

2 stops13h 15mAir Canada

Deal found 8/20

$373

Mon 9/156:35 pmYUL - SEA

1 stop18h 45mMultiple Airlines

Mon 9/227:55 amSEA - YUL

1 stop27h 14mMultiple Airlines

Deal found 8/18

$392

Wed 9/177:30 amYUL - SEA

1 stop9h 46mAir Canada

Wed 9/247:15 amSEA - YUL

Nonstop5h 13mAir Canada

Deal found 8/19

$391

Fri 9/194:45 pmYUL - SEA

Nonstop5h 46mAir Canada

Mon 9/227:15 amSEA - YUL

Nonstop5h 13mAir Canada

Deal found 8/19

$386

Tue 9/307:00 amYUL - SEA

1 stop8h 59mMultiple Airlines

Tue 10/142:05 pmSEA - YUL

2 stops21h 04mMultiple Airlines

Deal found 8/20

$353

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 August 20, 2025.

Tue 9/167:00 amYUL - SEA

1 stop8h 59mWestJet

Deal found 8/17

$172

Fri 10/247:00 amYUL - SEA

1 stop8h 59mWestJet

Deal found 8/17

$179

Sat 9/207:00 amYUL - SEA

2 stops32h 35mWestJet

Deal found 8/19

$193

Fri 9/198:10 amYUL - SEA

2 stops13h 02mMultiple Airlines

Deal found 8/18

$201

Mon 9/156:45 amYUL - SEA

2 stops33h 14mWestJet

Deal found 8/18

$205

Wed 9/176:45 amYUL - SEA

2 stops16h 44mWestJet

Deal found 8/18

$207

Mon 10/66:45 amYUL - SEA

2 stops33h 14mWestJet

Deal found 8/19

$210

Wed 10/16:45 amYUL - SEA

2 stops32h 50mMultiple Airlines

Deal found 8/19

$213

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

Wed 10/1

7:00 am-2:59 pm

1 stop10h 59m

Seattle/Tacoma Intl

Tue 10/14

2:05 pm-2:09 pm

2 stops21h 04m

$351

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 9/30

7:00 am-12:59 pm

1 stop8h 59m

Seattle/Tacoma Intl

Tue 10/14

2:05 pm-2:09 pm

2 stops21h 04m

$353

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 10/8

7:00 am-12:59 pm

1 stop8h 59m

Seattle/Tacoma Intl

Sat 10/11

8:40 am-12:27 am

2 stops12h 47m

$357

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 10/2

7:00 am-2:59 pm

1 stop10h 59m

Seattle/Tacoma Intl

Tue 10/14

2:05 pm-2:09 pm

2 stops21h 04m

$363

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 10/4

7:00 am-2:55 pm

1 stop10h 55m

Seattle/Tacoma Intl

Tue 10/14

2:05 pm-2:09 pm

2 stops21h 04m

$367

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 10/3

7:00 am-2:59 pm

1 stop10h 59m

Seattle/Tacoma Intl

Tue 10/14

2:05 pm-2:09 pm

2 stops21h 04m

$367

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 10/1

6:45 am-12:59 pm

2 stops33h 14m

Seattle/Tacoma Intl

Wed 10/8

8:40 am-12:27 am

2 stops12h 47m

$369

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Thu 9/11

7:30 am-2:16 pm

1 stop9h 46m

Seattle/Tacoma Intl

Wed 9/17

2:55 pm-7:10 am

2 stops13h 15m

$373

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 9/16

7:00 am-12:59 pm

1 stop8h 59m

$172

MontrealSeattle

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 10/24

7:00 am-12:59 pm

1 stop8h 59m

$179

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Showing 1-10 of 16 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?

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 June is currently the most expensive (average of $388). 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 29% on flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle by exploring options for tickets in the afternoon.

How much does it cost to fly round-trip from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

Reviews of airlines servicing Seattle

Get a feel of what it's like to fly with WestJet and Air Canada from Montreal Pierre Elliott Trudeau Intl Airport to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

WestJet

7.2

Good

3,032 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Aug 2025

YYJ - YVR

everything was good except we were so delayed we had to sleep on the floor in the vancouver airport … we were stranded there for 12 hours, no vouchers, no compensation, just a cold floor and we arrived at our final destination the following afternoon

WestJet

7.2

Good

3,032 reviews

WestJet

7.2

Good

3,032 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Aug 2025

YYJ - YVR

Air Canada

7.1

Good

10,000 reviews

WestJet

7.2

Good

3,032 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Aug 2025

YYJ - YVR

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 2 inbound flights from Montreal Pierre Elliott Trudeau Intl per day from 2 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.
How long is the flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?
Airlines like WestJet fly from Montreal Pierre Elliott Trudeau Intl Airport to Seattle in about 8h 59m. The time it takes to get you to your destination can typically vary by up to . The distance from Montreal Pierre Elliott Trudeau Intl Airport to Seattle is about 2276 mi.
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 $270. Another airline that can offer you cheap pricing is Air Canada. WestJet is currently priced 46% below the average price you’ll pay for this route.
What are the cheapest flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?
On average you can expect to pay $371 for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle. The cheapest flight overall is $182 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - Seattle/Tacoma Intl) is currently priced at $360.
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 June is currently the most expensive (average of $388). 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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Shelton

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Other flights to Seattle

Top 2 airlines flying from Pierre Elliott Trudeau Intl to Seattle

Airline	Cheapest	Average	Flexibility	On-time
WestJet	Cheapest$270	Average$595	FlexibilityNo cancel fee	On-time60%
Air Canada	Cheapest$358	Average$489	FlexibilityNo cancel fee	On-time67%

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$172+ 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 9/16. 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

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

Cheap flight deals from Pierre Elliott Trudeau Intl to Seattle

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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 August 20, 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 August 20, 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?

How much does it cost to fly round-trip from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?

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

Reviews of airlines servicing Seattle

Get a feel of what it's like to fly with WestJet and Air Canada from Montreal Pierre Elliott Trudeau Intl Airport to Seattle by reading reviews from past customers. 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?

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?

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Alternative routes for Pierre Elliott Trudeau Intl to Seattle

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Top 2 airlines flying from Pierre Elliott Trudeau Intl to Seattle

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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 August 20, 2025.