Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle from C$ 333
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 26/1. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — SEA
25 Nov — 2 Dec1
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 Tuesday or Monday 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 26 October 2026.
Fri 20/116:00 a.m. -
1 stop11h 50m
Fri 27/118:25 a.m. -
1 stop12h 23m
Deal found 21/10C$ 604
Sun 6/1212:41 p.m. -
1 stop14h 14m
Thu 31/128:00 a.m. -
1 stop12h 49m
Deal found 25/10C$ 606
Thu 26/117:50 a.m. -
2 stops9h 47m
Wed 2/1210:10 a.m. -
1 stop7h 20m
Deal found 26/10C$ 612
Tue 8/122:24 p.m. -
1 stop11h 24m
Tue 15/129:15 a.m. -
1 stop10h 33m
Deal found 24/10C$ 618
Sat 21/117:10 a.m. -
1 stop13h 00m
Fri 27/118:25 a.m. -
1 stop12h 23m
Deal found 22/10C$ 625
Sun 6/127:33 a.m. -
2 stops11h 25m
Sun 13/1211:39 p.m. -
2 stops9h 45m
Deal found 22/10C$ 632
Fri 11/126:00 a.m. -
1 stop12h 03m
Wed 30/129:55 p.m. -
1 stop10h 42m
Deal found 25/10C$ 639
Wed 4/116:00 a.m. -
1 stop11h 45m
Fri 27/118:25 a.m. -
1 stop12h 23m
Deal found 21/10C$ 646
Sun 22/117:30 a.m. -
1 stop10h 07m
Fri 27/118:40 a.m. -
1 stop7h 55m
Deal found 25/10C$ 647
Sat 21/117:30 a.m. -
1 stop10h 07m
Fri 27/1110:10 a.m. -
1 stop7h 20m
Deal found 25/10C$ 648
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 26 October 2026.
Sat 21/117:10 a.m. -
1 stop13h 00m
Fri 27/116:00 a.m. -
1 stop10h 47m
Deal found 22/10C$ 604
Tue 8/122:24 p.m. -
1 stop11h 24m
Tue 15/129:15 a.m. -
1 stop10h 33m
Deal found 24/10C$ 618
Sat 6/28:00 p.m. -
2 stops20h 40m
Wed 10/22:30 p.m. -
1 stop21h 20m
Deal found 24/10C$ 699
Fri 8/17:00 a.m. -
1 stop12h 35m
Sat 16/112:00 p.m. -
1 stop8h 35m
Deal found 22/10C$ 604
Thu 26/117:10 a.m. -
1 stop13h 00m
Wed 2/129:50 a.m. -
1 stop10h 43m
Deal found 26/10C$ 606
Sun 22/1112:44 p.m. -
1 stop14h 13m
Sun 29/118:25 a.m. -
1 stop12h 23m
Deal found 22/10C$ 657
Sat 21/117:10 a.m. -
1 stop13h 00m
Sun 29/118:25 a.m. -
1 stop12h 23m
Deal found 22/10C$ 657
Wed 9/127:10 a.m. -
1 stop8h 21m
Sat 2/19:30 a.m. -
1 stop10h 59m
Deal found 25/10C$ 669
Sat 6/27:05 a.m. -
1 stop12h 41m
Wed 10/28:00 a.m. -
1 stop12h 51m
Deal found 24/10C$ 690
Tue 8/127:10 a.m. -
2 stops11h 19m
Wed 30/129:55 p.m. -
1 stop10h 42m
Deal found 25/10C$ 690
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 26 October 2026 and is based on user searches.
Wed 4/116:00 a.m. -
1 stop11h 45m
Fri 27/118:25 a.m. -
1 stop12h 23m
Deal found 21/10C$ 646
Fri 20/116:00 a.m. -
1 stop11h 50m
Fri 27/118:25 a.m. -
1 stop12h 23m
Deal found 21/10C$ 604
Sat 21/117:10 a.m. -
1 stop13h 00m
Fri 27/118:25 a.m. -
1 stop12h 23m
Deal found 22/10C$ 625
Sat 21/117:30 a.m. -
1 stop10h 07m
Fri 27/1110:10 a.m. -
1 stop7h 20m
Deal found 25/10C$ 648
Sat 21/111:15 p.m. -
2 stops11h 42m
Sat 28/1110:10 a.m. -
1 stop7h 20m
Deal found 25/10C$ 655
Sat 21/117:10 a.m. -
1 stop13h 00m
Sun 29/118:25 a.m. -
1 stop12h 23m
Deal found 22/10C$ 657
Sun 22/117:30 a.m. -
1 stop10h 07m
Fri 27/118:40 a.m. -
1 stop7h 55m
Deal found 25/10C$ 647
Mon 23/114:50 p.m. -
1 stop8h 08m
Fri 27/116:00 a.m. -
1 stop10h 47m
Deal found 25/10C$ 671
Thu 26/117:10 a.m. -
1 stop13h 00m
Wed 2/129:50 a.m. -
1 stop10h 43m
Deal found 26/10C$ 606
Thu 26/117:50 a.m. -
2 stops9h 47m
Wed 2/1210:10 a.m. -
1 stop7h 20m
Deal found 26/10C$ 612
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 26 October 2026.
Tue 26/16:00 a.m. -
1 stop11h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 25/10C$ 333
Fri 23/46:45 a.m. -
2 stops10h 55m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 21/10C$ 336
Sat 9/16:00 a.m. -
1 stop11h 43m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 22/10C$ 343
Wed 6/16:00 a.m. -
1 stop11h 40m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 25/10C$ 345
Tue 26/112:10 p.m. -
1 stop11h 03m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 21/10C$ 346
Tue 8/122:24 p.m. -
1 stop11h 24m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 23/10C$ 352
Fri 23/412:45 p.m. -
1 stop12h 20m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 22/10C$ 354
Sun 6/127:33 a.m. -
2 stops11h 25m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 22/10C$ 356
Mon 23/114:01 p.m. -
2 stops11h 41m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 24/10C$ 357
Mon 25/16:00 a.m. -
1 stop11h 43m
Wed 31/1212:00 a.m. -
Nonstop0h 00m
Deal found 21/10C$ 359
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 26 October 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 26 October 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 6/1
6:00 a.m.-2:40 p.m.
1 stop11h 40m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 345
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Fri 8/1
6:00 a.m.-2:40 p.m.
1 stop11h 40m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 345
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Mon 23/11
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$ 345
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Tue 24/11
6:00 a.m.-2:55 p.m.
1 stop11h 55m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 345
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Tue 12/1
6:00 a.m.-2:40 p.m.
1 stop11h 40m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 345
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Fri 23/4
12:45 p.m.-10:05 p.m.
1 stop12h 20m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 345
Quickest round-trip
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Fri 23/4
6:45 a.m.-2:40 p.m.
2 stops10h 55m
Seattle/Tacoma Intl
Wed 31/12
12:00 a.m.-3:00 a.m.
Nonstop0h 00m
C$ 349
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Sat 21/11
7:10 a.m.-5:10 p.m.
1 stop13h 00m
Seattle/Tacoma Intl
Fri 27/11
6:00 a.m.-7:47 p.m.
1 stop10h 47m
C$ 604
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Fri 8/1
7:00 a.m.-4:35 p.m.
1 stop12h 35m
Seattle/Tacoma Intl
Sat 16/1
12:00 p.m.-11:35 p.m.
1 stop8h 35m
C$ 604
MontrealSeattle
YUL Montreal Pierre Elliott Trudeau Intl - SEA Seattle/Tacoma Intl
YULSEA
Montreal Pierre Elliott Trudeau Intl
Thu 26/11
7:10 a.m.-5:10 p.m.
1 stop13h 00m
Seattle/Tacoma Intl
Wed 2/12
9:50 a.m.-11:33 p.m.
1 stop10h 43m
C$ 606
Flights are sorted by cheapest round-trip flights first.
Deals found on 25/10
Showing 1-10 of 17 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$ 584). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle in June is currently the most expensive (average of C$ 856). 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 typical for this route at the moment.
Montreal Pierre Elliott Trudeau Intl Airport to Seattle flights typically cost between C$ 541 and C$ 786 in November.The cheapest round-trip price found within the last 5 days was C$ 604 on Delta (20 Nov-27 Nov).
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 35% 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$ 547.
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 41m.
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 26 October 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 $340 for Taipei to PDX ,
Related info for your journey
Find useful and relevant information for your journey from Pierre Elliott Trudeau Intl to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly into for flights to Seattle from Montreal Pierre Elliott Trudeau Intl?
For a flight from Montreal Pierre Elliott Trudeau Intl to Seattle, you will be flying into Seattle/Tacoma Intl. Seattle/Tacoma Intl (SEA) is just 18.4 km from the centre of the city. Seattle/Tacoma Intl is the only Seattle airport and it handles 0 inbound flights from Montreal Pierre Elliott Trudeau Intl per day. 4 airlines have flights to Seattle/Tacoma Intl from Montreal Pierre Elliott Trudeau Intl on a regular basis.
How long is the flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle?
There are many flights that can get you from Montreal Pierre Elliott Trudeau Intl Airport to Seattle in 13h. Fly via Delta to get the fastest option. The distance between Montreal Pierre Elliott Trudeau Intl Airport and Seattle is about 3663 km.
What are the cheapest airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle round-trip?
Flying on Delta is currently your cheapest option to Seattle, with prices starting at C$ 285. Additional round-trip tickets that might be worth considering are offered by WestJet and United Airlines, with the lowest prices starting at C$ 414 and C$ 503, respectively. Delta is 58% 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$ 722, our data indicates the cheapest price to be C$ 672. The most popular route (Montreal Pierre Elliott Trudeau Intl - Seattle/Tacoma Intl), is priced around C$ 606.
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$ 584). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Seattle in June is currently the most expensive (average of C$ 856). 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 26 October 2026.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 26 October 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 7,457,451 searches. Data last updated 26 October 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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