Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle from C$ 250
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — SEA
12 Oct — 19 Oct1
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 January, booked 81 days in advance, depart on a Wednesday or Thursday and return on a Monday
Cheap flight deals 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 12 September 2026.
Tue 13/106:45 a.m. -
2 stops15h 00m
Tue 20/107:35 p.m. -
1 stop8h 30m
Deal found 8/9C$ 402
Thu 24/96:45 a.m. -
2 stops15h 00m
Fri 2/107:35 p.m. -
1 stop8h 30m
Deal found 10/9C$ 409
Tue 13/106:45 a.m. -
2 stops15h 00m
Thu 22/107:35 p.m. -
1 stop8h 30m
Deal found 8/9C$ 411
Wed 7/106:45 a.m. -
2 stops15h 00m
Sat 10/107:35 p.m. -
1 stop8h 30m
Deal found 9/9C$ 420
Wed 7/107:15 a.m. -
1 stop14h 30m
Sat 17/107:35 p.m. -
1 stop8h 30m
Deal found 12/9C$ 431
Thu 15/107:15 a.m. -
1 stop14h 30m
Wed 21/107:35 p.m. -
1 stop8h 30m
Deal found 9/9C$ 436
Sat 10/105:30 p.m. -
1 stop19h 10m
Sat 17/107:35 p.m. -
1 stop8h 30m
Deal found 12/9C$ 437
Fri 25/98:00 p.m. -
1 stop16h 40m
Sat 3/107:35 p.m. -
1 stop8h 30m
Deal found 9/9C$ 438
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 12 September 2026.
Tue 13/106:45 a.m. -
2 stops15h 00m
Thu 22/1010:30 a.m. -
2 stops10h 55m
Deal found 8/9C$ 473
Sun 25/108:30 a.m. -
2 stops12h 52m
Sun 1/113:15 p.m. -
2 stops12h 55m
Deal found 10/9C$ 513
Sun 14/26:00 a.m. -
1 stop11h 23m
Sat 20/21:45 p.m. -
1 stop6h 50m
Deal found 12/9C$ 541
Wed 20/17:00 a.m. -
2 stops14h 09m
Tue 26/15:07 a.m. -
2 stops13h 10m
Deal found 8/9C$ 542
Wed 14/106:45 a.m. -
2 stops15h 00m
Sun 18/107:35 p.m. -
1 stop8h 30m
Deal found 10/9C$ 474
Thu 14/17:30 a.m. -
1 stop10h 07m
Mon 18/110:10 a.m. -
1 stop7h 23m
Deal found 12/9C$ 533
Sun 11/106:45 a.m. -
2 stops29h 55m
Thu 15/1010:30 a.m. -
1 stop10h 15m
Deal found 10/9C$ 506
Fri 8/17:30 a.m. -
1 stop10h 07m
Sat 16/18:15 a.m. -
2 stops12h 03m
Deal found 11/9C$ 534
Sat 10/107:20 p.m. -
2 stops17h 20m
Sat 17/1010:30 a.m. -
2 stops10h 55m
Deal found 12/9C$ 544
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 12 September 2026 and is based on user searches.
Thu 24/96:45 a.m. -
2 stops15h 00m
Fri 2/107:35 p.m. -
1 stop8h 30m
Deal found 10/9C$ 409
Fri 25/98:00 p.m. -
1 stop16h 40m
Sat 3/107:35 p.m. -
1 stop8h 30m
Deal found 9/9C$ 438
Wed 7/106:45 a.m. -
2 stops15h 00m
Sat 10/107:35 p.m. -
1 stop8h 30m
Deal found 9/9C$ 420
Wed 7/107:15 a.m. -
1 stop14h 30m
Sat 17/107:35 p.m. -
1 stop8h 30m
Deal found 12/9C$ 431
Sat 10/105:30 p.m. -
1 stop19h 10m
Sat 17/107:35 p.m. -
1 stop8h 30m
Deal found 12/9C$ 437
Tue 13/106:45 a.m. -
2 stops15h 00m
Tue 20/107:35 p.m. -
1 stop8h 30m
Deal found 8/9C$ 402
Tue 13/106:45 a.m. -
2 stops15h 00m
Thu 22/107:35 p.m. -
1 stop8h 30m
Deal found 8/9C$ 411
Thu 15/107:15 a.m. -
1 stop14h 30m
Wed 21/107:35 p.m. -
1 stop8h 30m
Deal found 9/9C$ 436
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 12 September 2026.
Tue 6/106:45 a.m. -
2 stops15h 00m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 11/9C$ 250
Wed 14/106:45 a.m. -
2 stops15h 00m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 11/9C$ 251
Thu 24/96:00 p.m. -
1 stop7h 47m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 9/9C$ 269
Tue 3/116:45 a.m. -
3 stops31h 14m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 10/9C$ 272
Tue 27/106:45 a.m. -
2 stops10h 55m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 12/9C$ 275
Thu 3/128:45 a.m. -
1 stop8h 52m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 8/9C$ 276
Thu 24/912:48 p.m. -
1 stop12h 17m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 10/9C$ 277
Fri 30/106:45 a.m. -
3 stops31h 14m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 10/9C$ 279
Wed 7/107:15 a.m. -
1 stop14h 30m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 12/9C$ 280
Fri 9/108:00 p.m. -
1 stop16h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 8/9C$ 286
Tue 29/95:45 p.m. -
2 stops28h 00m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 8/9C$ 287
Thu 1/106:45 a.m. -
2 stops15h 00m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 12/9C$ 289
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 12 September 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 7,457,451 searches. Data last updated 12 September 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 Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Wed 7/10
6:45 a.m.-6:45 p.m.
2 stops15h 00m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 300
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Tue 3/11
6:00 a.m.-2:45 p.m.
1 stop11h 45m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 304
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Thu 3/12
7:33 a.m.-6:11 p.m.
2 stops13h 38m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 316
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Thu 24/9
6:10 a.m.-8:37 p.m.
2 stops17h 27m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 323
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Tue 29/9
9:45 a.m.-8:37 p.m.
2 stops13h 52m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 323
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Sat 3/10
6:00 a.m.-2:49 p.m.
1 stop11h 49m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 325
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Wed 14/10
11:23 a.m.-6:19 p.m.
1 stop9h 56m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 325
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Sun 1/11
4:45 p.m.-9:40 a.m.
2 stops19h 55m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 332
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Sat 28/11
7:10 a.m.-5:10 p.m.
1 stop13h 00m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 334
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Mon 12/10
7:30 a.m.-6:32 p.m.
1 stop14h 02m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 337
Flights are sorted by cheapest round-trip flights first.
Deals found on 12/9
Showing 1-10 of 20 resultsSorted by cheapest first
1
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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$ 578). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle in June is currently the most expensive (average of C$ 864). 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?
Airfare is below average for this route at the moment.
Montreal Pierre Elliott Trudeau Intl Airport to Seattle flights typically cost between C$ 556 and C$ 1,028 in October.The cheapest round-trip price found within the last 5 days was C$ 402 on WestJet (13 Oct-20 Oct).
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 38% 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$ 542.
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 Vancouver (YVR) have the shortest average one-way travel time for 1-stop routes: 8h 36m.
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 25m.
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 12 September 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.
I got middle seat, but it was cheap $340 for Taipei to PDX ,
Related info for your journey
Find useful and relevant information for your journey from Pierre Elliott Trudeau Intl to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly into for flights to Seattle from Montreal Pierre Elliott Trudeau Intl?
For a flight from Montreal Pierre Elliott Trudeau Intl to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 18.4 km from the centre of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 0 inbound flights from Montreal Pierre Elliott Trudeau Intl per day. 5 airlines have flights to Seattle/Tacoma Intl from Montreal Pierre Elliott Trudeau Intl on a regular basis.
How long is the flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?
There are many flights that can get you from Montreal Pierre Elliott Trudeau Intl Airport to Seattle in 15h. Fly via WestJet to get the fastest option. The distance between Montreal Pierre Elliott Trudeau Intl Airport and Seattle is about 3663 km.
What are the cheapest airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle round-trip?
Flying on Delta is currently your cheapest option to Seattle, with prices starting at C$ 282. Additional round-trip tickets that might be worth considering are offered by WestJet and American Airlines, with the lowest prices starting at C$ 410 and C$ 421, respectively. Delta is 59% 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$ 578). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle in June is currently the most expensive (average of C$ 864). 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 12 September 2026.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 12 September 2026.
Top 5 airlines flying from Pierre Elliott Trudeau Intl to Seattle
Discover the top 5 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 7,457,451 searches. Data last updated 12 September 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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