Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle from C$ 230
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 29/7. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — SEA
8 Jun — 15 Jun1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to Seattle/Tacoma Intl are usually found in February or April, booked 81 days in advance, depart on a Wednesday or Tuesday and return on a Friday
Cheap flight deals from Pierre Elliott Trudeau Intl to Seattle
Enter your travel dates to find the best prices.
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Best
Last-minute
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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 9 May 2026.
Thu 27/86:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Tue 1/97:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 6/5C$ 370
Wed 8/76:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Tue 14/77:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 9/5C$ 379
Thu 20/86:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Fri 28/87:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 6/5C$ 380
Thu 16/76:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Sun 19/77:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 4/5C$ 384
Wed 5/86:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Thu 20/87:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 6/5C$ 400
Wed 8/78:00 p.m.
YUL
-
SEA
1 stop25h 45m
WestJet
Sat 25/77:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 4/5C$ 402
Wed 5/85:30 p.m.
YUL
-
SEA
1 stop19h 10m
WestJet
Mon 10/87:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 8/5C$ 403
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 9 May 2026.
Thu 20/86:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Fri 28/810:30 a.m.
SEA
-
YUL
2 stops10h 55m
WestJet
Deal found 7/5C$ 390
Tue 9/65:45 p.m.
YUL
-
SEA
2 stops18h 55m
Multiple Airlines
Sat 13/67:35 p.m.
SEA
-
YUL
1 stop15h 37m
Multiple Airlines
Deal found 8/5C$ 707
Sat 30/53:25 p.m.
YUL
-
SEA
1 stop11h 40m
United Airlines
Thu 4/611:00 p.m.
SEA
-
YUL
1 stop11h 09m
United Airlines
Deal found 8/5C$ 753
Wed 5/86:45 a.m.
YUL
-
SEA
2 stops17h 15m
WestJet
Mon 10/87:35 p.m.
SEA
-
YUL
2 stops18h 10m
WestJet
Deal found 7/5C$ 448
Thu 1/106:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Sat 31/103:20 p.m.
SEA
-
YUL
1 stop21h 52m
WestJet
Deal found 8/5C$ 517
Fri 17/77:15 a.m.
YUL
-
SEA
1 stop14h 30m
WestJet
Mon 20/77:00 a.m.
SEA
-
YUL
1 stop13h 45m
WestJet
Deal found 4/5C$ 539
Fri 29/53:25 p.m.
YUL
-
SEA
1 stop11h 19m
United Airlines
Sun 7/611:20 p.m.
SEA
-
YUL
1 stop17h 25m
United Airlines
Deal found 8/5C$ 753
Sun 24/59:15 a.m.
YUL
-
SEA
1 stop9h 45m
United Airlines
Thu 4/611:00 p.m.
SEA
-
YUL
1 stop11h 09m
United Airlines
Deal found 8/5C$ 753
Tue 9/65:45 p.m.
YUL
-
SEA
2 stops18h 55m
WestJet
Sat 13/67:35 p.m.
SEA
-
YUL
2 stops42h 10m
WestJet
Deal found 7/5C$ 659
Fri 29/56:00 a.m.
YUL
-
SEA
1 stop11h 16m
United Airlines
Wed 3/68:00 a.m.
SEA
-
YUL
1 stop8h 45m
United Airlines
Deal found 8/5C$ 753
Sat 30/53:25 p.m.
YUL
-
SEA
1 stop11h 40m
United Airlines
Fri 5/61:00 p.m.
SEA
-
YUL
1 stop8h 13m
United Airlines
Deal found 8/5C$ 753
Sun 21/66:45 a.m.
YUL
-
SEA
3 stops29h 55m
WestJet
Tue 23/610:30 a.m.
SEA
-
YUL
2 stops34h 55m
WestJet
Deal found 8/5C$ 718
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 9 May 2026 and is based on user searches.
Mon 1/66:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Mon 8/610:30 a.m.
SEA
-
YUL
2 stops10h 55m
WestJet
Deal found 4/5C$ 436
Mon 1/66:45 a.m.
YUL
-
SEA
2 stops29h 55m
WestJet
Thu 4/610:30 a.m.
SEA
-
YUL
2 stops10h 55m
WestJet
Deal found 7/5C$ 454
Thu 4/66:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Thu 11/610:30 a.m.
SEA
-
YUL
2 stops10h 55m
WestJet
Deal found 7/5C$ 447
Wed 17/65:45 p.m.
YUL
-
SEA
2 stops28h 00m
WestJet
Wed 24/610:30 a.m.
SEA
-
YUL
2 stops10h 55m
WestJet
Deal found 8/5C$ 455
Fri 19/66:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Fri 26/67:35 p.m.
SEA
-
YUL
2 stops25h 50m
WestJet
Deal found 5/5C$ 450
Thu 25/66:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Wed 1/77:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 7/5C$ 431
Thu 25/66:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Thu 9/77:00 a.m.
SEA
-
YUL
2 stops30h 45m
WestJet
Deal found 4/5C$ 451
Fri 26/65:45 p.m.
YUL
-
SEA
2 stops18h 55m
WestJet
Wed 1/77:35 p.m.
SEA
-
YUL
1 stop8h 30m
WestJet
Deal found 4/5C$ 428
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 9 May 2026.
Wed 29/76:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 7/5C$ 230
Fri 18/96:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 8/5C$ 246
Wed 5/86:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 4/5C$ 247
Tue 28/76:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 6/5C$ 253
Mon 5/106:45 a.m.
YUL
-
SEA
2 stops15h 00m
WestJet
Deal found 6/5C$ 254
Sun 26/75:45 p.m.
YUL
-
SEA
2 stops28h 00m
WestJet
Deal found 7/5C$ 268
Sat 27/65:45 p.m.
YUL
-
SEA
2 stops18h 55m
WestJet
Deal found 5/5C$ 272
Find flight deals from Pierre Elliott Trudeau Intl to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Pierre Elliott Trudeau Intl (YUL) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 9 May 2026.
Customize your flight search to find flights from Pierre Elliott Trudeau Intl to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 9 May 2026.
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
Cheapest round-trip
MontrealSeattle
YUL - SEA
YULSEA
Montreal Pierre Elliott Trudeau Intl
Thu 20/8
6:45 a.m.-6:45 p.m.
2 stops15h 00m
Seattle/Tacoma Intl
Fri 28/8
10:30 a.m.-12:25 a.m.
2 stops10h 55m
C$ 390
MontrealSeattle
YUL - SEA
YULSEA
Montreal Pierre Elliott Trudeau Intl
Wed 5/8
6:45 a.m.-9:00 p.m.
2 stops17h 15m
Seattle/Tacoma Intl
Mon 10/8
7:35 p.m.-4:45 p.m.
2 stops18h 10m
C$ 448
MontrealSeattle
YUL - SEA
YULSEA
Montreal Pierre Elliott Trudeau Intl
Thu 1/10
6:45 a.m.-6:45 p.m.
2 stops15h 00m
Seattle/Tacoma Intl
Sat 31/10
3:20 p.m.-4:12 p.m.
1 stop21h 52m
C$ 517
MontrealSeattle
YUL - SEA
YULSEA
Montreal Pierre Elliott Trudeau Intl
Fri 17/7
7:15 a.m.-6:45 p.m.
1 stop14h 30m
Seattle/Tacoma Intl
Mon 20/7
7:00 a.m.-11:45 p.m.
1 stop13h 45m
C$ 539
MontrealSeattle
YUL - SEA
YULSEA
Montreal Pierre Elliott Trudeau Intl
Tue 9/6
5:45 p.m.-9:40 a.m.
2 stops18h 55m
Seattle/Tacoma Intl
Sat 13/6
7:35 p.m.-4:45 p.m.
2 stops42h 10m
C$ 659
MontrealSeattle
YUL - SEA
YULSEA
Montreal Pierre Elliott Trudeau Intl
Tue 9/6
5:45 p.m.-9:40 a.m.
2 stops18h 55m
Seattle/Tacoma Intl
Sat 13/6
7:35 p.m.-2:12 p.m.
1 stop15h 37m
C$ 707
MontrealSeattle
YUL - SEA
YULSEA
Montreal Pierre Elliott Trudeau Intl
Sun 21/6
6:45 a.m.-9:40 a.m.
3 stops29h 55m
Seattle/Tacoma Intl
Tue 23/6
10:30 a.m.-12:25 a.m.
2 stops34h 55m
C$ 718
MontrealSeattle
YUL - SEA
YULSEA
Montreal Pierre Elliott Trudeau Intl
Sat 30/5
3:25 p.m.-12:05 a.m.
1 stop11h 40m
Seattle/Tacoma Intl
Thu 4/6
11:00 p.m.-1:09 p.m.
1 stop11h 09m
C$ 753
MontrealSeattle
YUL - SEA
YULSEA
Montreal Pierre Elliott Trudeau Intl
Fri 29/5
3:25 p.m.-11:44 p.m.
1 stop11h 19m
Seattle/Tacoma Intl
Sun 7/6
11:20 p.m.-7:45 p.m.
1 stop17h 25m
C$ 753
MontrealSeattle
YUL - SEA
YULSEA
Montreal Pierre Elliott Trudeau Intl
Sun 24/5
9:15 a.m.-4:00 p.m.
1 stop9h 45m
Seattle/Tacoma Intl
Thu 4/6
11:00 p.m.-1:09 p.m.
1 stop11h 09m
C$ 753
Flights are sorted by cheapest round-trip flights first.
Deals found on 8/5
Showing 1-10 of 22 resultsSorted by cheapest first
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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.
YUL-SEA
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
More
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 80 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, February is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle (average of C$ 570). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle in May is currently the most expensive (average of C$ 749). 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.
How much does it cost to fly round-trip from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?
What’s the top layover airport for flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?
Share of one-stop round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle chosen by Cheapflights users in the past 12 months, using the same layover each way.
Calgary (YYC) – chosen by Cheapflights users on 36% of one-stop itineraries from Montreal Pierre Elliott Trudeau Intl Airport to Seattle on Cheapflights.
What’s the cheapest layover airport for flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?
Average round-trip fare for 1-stop flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle, chosen by Cheapflights users in the past 12 months, with the same layover each way.
Calgary (YYC) is the most affordable 1-stop option, with an average round-trip price of C$ 503.
What’s the fastest layover option from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?
Shortest average travel time for 1-stop one-way flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.
Flights via Chicago (ORD) have the shortest average one-way travel time for 1-stop routes: 8h 47m.
Which airport typically offers the quickest layover for flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?
Average layover duration for 1-stop one-way flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 1h 16m.
Reviews of airlines servicing Seattle
Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 9 May 2026.
See what other customers who have flown with Delta,United Airlines, andWestJet 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.
The snacks were not very good, not everyone was very friendly and professional
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?
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. 4 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. 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 Delta is currently your cheapest option to Seattle, with prices starting at C$ 278. Additional round-trip tickets that might be worth considering are offered by WestJet and United Airlines, with the lowest prices starting at C$ 408 and C$ 460, respectively. Delta is 58% cheaper than the average price of flights available within the next 90 days to this destination.
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, February is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle (average of C$ 570). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle in May is currently the most expensive (average of C$ 749). 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.
Search flights from Pierre Elliott Trudeau Intl to Seattle by cabin class
Find flights from Pierre Elliott Trudeau Intl to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Browse through other flights departing from Pierre Elliott Trudeau Intl. Flights are based on user searches made on Cheapflights and were last updated on 9 May 2026.
Top 4 airlines flying from Pierre Elliott Trudeau Intl to Seattle
Discover the top 4 airlines that operate flights from Pierre Elliott Trudeau Intl to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 9 May 2026.
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
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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