Cheap flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport from C$ 229
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 18/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YUL
7 Sep — 14 Sep1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl are usually found in October or July, booked 76 days in advance, depart on a Wednesday or Monday and return on a Tuesday
Cheap flight deals from Seattle to Pierre Elliott Trudeau Intl
Enter your travel dates to find the best prices.
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One-way
Cheapest flights from Seattle to Pierre Elliott Trudeau Intl
Explore the most affordable flight options available from Seattle to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 August 2026.
Thu 17/97:35 p.m. -
1 stop8h 30m
Thu 24/96:45 a.m. -
2 stops15h 00m
Deal found 3/8C$ 507
Tue 15/910:30 a.m. -
2 stops10h 55m
Sat 19/96:45 a.m. -
2 stops15h 00m
Deal found 3/8C$ 520
Sun 4/107:35 p.m. -
1 stop8h 30m
Sat 10/108:00 p.m. -
1 stop16h 40m
Deal found 3/8C$ 524
Fri 25/97:35 p.m. -
1 stop8h 30m
Mon 28/96:45 a.m. -
2 stops15h 00m
Deal found 8/8C$ 528
Thu 17/97:35 p.m. -
1 stop8h 30m
Thu 24/96:00 p.m. -
1 stop7h 47m
Deal found 3/8C$ 530
Wed 7/107:35 p.m. -
1 stop8h 30m
Thu 15/106:45 a.m. -
2 stops15h 00m
Deal found 7/8C$ 534
Sun 18/107:35 p.m. -
1 stop8h 30m
Tue 27/104:15 p.m. -
1 stop25h 05m
Deal found 3/8C$ 538
Sun 20/97:35 p.m. -
1 stop8h 30m
Sat 26/98:00 p.m. -
1 stop16h 40m
Deal found 3/8C$ 540
Fri 16/107:35 p.m. -
1 stop8h 30m
Fri 23/107:15 a.m. -
1 stop14h 30m
Deal found 3/8C$ 542
Sun 20/97:35 p.m. -
1 stop8h 30m
Mon 28/97:15 a.m. -
1 stop14h 30m
Deal found 3/8C$ 544
Tue 15/910:30 a.m. -
2 stops10h 55m
Wed 23/96:45 a.m. -
2 stops15h 00m
Deal found 7/8C$ 548
Best flights from Seattle to Pierre Elliott Trudeau Intl
Discover carefully curated flight deals from Seattle to Pierre Elliott Trudeau Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 8 August 2026.
Fri 18/97:35 p.m. -
1 stop8h 30m
Sun 27/98:00 p.m. -
1 stop16h 40m
Deal found 7/8C$ 552
Tue 1/95:13 p.m. -
1 stop14h 27m
Tue 8/96:00 p.m. -
1 stop7h 47m
Deal found 3/8C$ 614
Sat 9/11:45 p.m. -
1 stop6h 50m
Sun 17/14:55 p.m. -
1 stop8h 10m
Deal found 7/8C$ 621
Thu 26/118:40 a.m. -
1 stop8h 53m
Sun 29/117:30 a.m. -
1 stop17h 27m
Deal found 7/8C$ 654
Sat 22/85:20 p.m. -
1 stop11h 56m
Sat 29/84:55 p.m. -
1 stop8h 48m
Deal found 7/8C$ 706
Wed 30/98:20 a.m. -
1 stop10h 22m
Mon 5/104:15 p.m. -
1 stop9h 44m
Deal found 4/8C$ 709
Wed 19/89:10 a.m. -
1 stop11h 42m
Mon 24/812:47 p.m. -
1 stop12h 18m
Deal found 3/8C$ 654
Fri 25/911:14 p.m. -
1 stop12h 26m
Mon 5/106:00 p.m. -
1 stop7h 42m
Deal found 3/8C$ 668
Tue 1/912:15 p.m. -
2 stops17h 01m
Tue 15/96:10 a.m. -
2 stops11h 14m
Deal found 4/8C$ 727
Sat 19/911:00 p.m. -
1 stop8h 40m
Sat 26/97:30 a.m. -
1 stop9h 52m
Deal found 5/8C$ 692
Tue 22/95:00 a.m. -
2 stops14h 06m
Tue 29/99:15 a.m. -
2 stops11h 22m
Deal found 6/8C$ 727
Last-minute flights from Seattle to Pierre Elliott Trudeau Intl
Discover last-minute flight deals from Seattle to Pierre Elliott Trudeau Intl. Data last updated 8 August 2026 and is based on user searches.
Fri 14/810:35 p.m. -
1 stop12h 06m
Tue 18/812:47 p.m. -
1 stop12h 18m
Deal found 7/8C$ 913
Fri 14/88:59 a.m. -
1 stop11h 41m
Sat 22/86:00 a.m. -
1 stop7h 31m
Deal found 4/8C$ 942
Fri 14/85:20 p.m. -
1 stop11h 56m
Sat 22/86:10 a.m. -
2 stops12h 19m
Deal found 4/8C$ 956
Sun 16/810:30 a.m. -
2 stops34h 55m
Mon 24/88:00 p.m. -
1 stop16h 40m
Deal found 4/8C$ 633
Sun 16/89:53 a.m. -
1 stop10h 37m
Mon 24/812:47 p.m. -
1 stop12h 18m
Deal found 3/8C$ 854
Mon 17/89:10 a.m. -
1 stop11h 42m
Mon 24/812:47 p.m. -
1 stop12h 18m
Deal found 3/8C$ 727
Mon 17/85:50 a.m. -
2 stops14h 53m
Mon 24/87:30 a.m. -
1 stop14h 02m
Deal found 3/8C$ 748
Tue 18/89:10 a.m. -
1 stop11h 42m
Mon 24/86:00 a.m. -
1 stop11h 34m
Deal found 4/8C$ 740
Tue 18/812:15 p.m. -
2 stops17h 01m
Mon 24/89:45 a.m. -
2 stops15h 06m
Deal found 4/8C$ 761
One-way flights from Seattle to Pierre Elliott Trudeau Intl
Search for one-way flight options from Seattle to Pierre Elliott Trudeau Intl. Find affordable one-way fares based on user searches. Data last updated 8 August 2026.
Fri 18/97:35 p.m. -
1 stop8h 30m
Deal found 6/8C$ 229
Wed 30/910:30 a.m. -
2 stops10h 55m
Deal found 7/8C$ 231
Fri 25/97:35 p.m. -
1 stop8h 30m
Deal found 3/8C$ 233
Tue 22/97:35 p.m. -
1 stop8h 30m
Deal found 4/8C$ 238
Sat 5/97:20 p.m. -
2 stops8h 50m
Deal found 3/8C$ 243
Fri 11/910:30 a.m. -
2 stops10h 55m
Deal found 6/8C$ 245
Sat 21/118:40 a.m. -
1 stop7h 55m
Deal found 6/8C$ 253
Tue 22/93:00 p.m. -
2 stops13h 10m
Deal found 3/8C$ 256
Find flight deals from Seattle to Pierre Elliott Trudeau Intl
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Pierre Elliott Trudeau Intl (YUL). 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 8 August 2026.
Customize your flight search to find flights from Seattle to Pierre Elliott Trudeau Intl 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 8 August 2026.
Use the filters below to find and compare flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest round-trip
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Fri 18/9
7:35 p.m.-7:05 a.m.
1 stop8h 30m
Montreal Pierre Elliott Trudeau Intl
Sun 27/9
8:00 p.m.-9:40 a.m.
1 stop16h 40m
C$ 552
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Tue 1/9
5:13 p.m.-10:40 a.m.
1 stop14h 27m
Montreal Pierre Elliott Trudeau Intl
Tue 8/9
6:00 p.m.-10:47 p.m.
1 stop7h 47m
C$ 614
Quickest round-trip
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Sat 9/1
1:45 p.m.-11:35 p.m.
1 stop6h 50m
Montreal Pierre Elliott Trudeau Intl
Sun 17/1
4:55 p.m.-10:05 p.m.
1 stop8h 10m
C$ 621
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Thu 26/11
8:40 a.m.-8:33 p.m.
1 stop8h 53m
Montreal Pierre Elliott Trudeau Intl
Sun 29/11
7:30 a.m.-9:57 p.m.
1 stop17h 27m
C$ 654
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Wed 19/8
9:10 a.m.-11:52 p.m.
1 stop11h 42m
Montreal Pierre Elliott Trudeau Intl
Mon 24/8
12:47 p.m.-10:05 p.m.
1 stop12h 18m
C$ 654
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Fri 25/9
11:14 p.m.-2:40 p.m.
1 stop12h 26m
Montreal Pierre Elliott Trudeau Intl
Mon 5/10
6:00 p.m.-10:42 p.m.
1 stop7h 42m
C$ 668
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Sat 19/9
11:00 p.m.-10:40 a.m.
1 stop8h 40m
Montreal Pierre Elliott Trudeau Intl
Sat 26/9
7:30 a.m.-2:22 p.m.
1 stop9h 52m
C$ 692
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Sat 22/8
5:20 p.m.-8:16 a.m.
1 stop11h 56m
Montreal Pierre Elliott Trudeau Intl
Sat 29/8
4:55 p.m.-10:43 p.m.
1 stop8h 48m
C$ 706
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Wed 30/9
8:20 a.m.-9:42 p.m.
1 stop10h 22m
Montreal Pierre Elliott Trudeau Intl
Mon 5/10
4:15 p.m.-10:59 p.m.
1 stop9h 44m
C$ 709
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Tue 1/9
12:15 p.m.-8:16 a.m.
2 stops17h 01m
Montreal Pierre Elliott Trudeau Intl
Tue 15/9
6:10 a.m.-2:24 p.m.
2 stops11h 14m
C$ 727
Flights are sorted by cheapest round-trip flights first.
Deals found on 3/8
Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from Seattle to Pierre Elliott Trudeau Intl
Have a flexible travel schedule? Discover the best time to fly to Pierre Elliott Trudeau Intl from Seattle with our price prediction graph.
SEA-YUL
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 Seattle to Montreal Pierre Elliott Trudeau Intl Airport
How far ahead should I book a flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?
The price you pay for your flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 74 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?
Currently, October is the cheapest month in which you can book a flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 735). Flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport in January is currently the most expensive (average of C$ 1,401). 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 Seattle to Montreal Pierre Elliott Trudeau Intl Airport?
Airfare is below average for this route at the moment.
Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights typically cost between C$ 638 and C$ 1,007 in September.The cheapest round-trip price found within the last 5 days was C$ 507 on WestJet (17 Sep-24 Sep).
Related info for your journey
Find useful and relevant information for your journey from Seattle to Pierre Elliott Trudeau Intl. 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 from for flights from Seattle to Montreal Pierre Elliott Trudeau Intl?
Seattle/Tacoma Intl (SEA), located 18.4 km from the city centre, is the airport you fly out of when you book flights from Seattle to Montreal Pierre Elliott Trudeau Intl. 0 airlines have flights from Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl on a regular basis. Booking flights from Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl should not be difficult; the airport handles an average of 0 outbound flights to Montreal Pierre Elliott Trudeau Intl per day.
How long is the flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?
Departing from Seattle to Montreal Pierre Elliott Trudeau Intl Airport will take you 6h 50m. The distance from Seattle to Montreal Pierre Elliott Trudeau Intl Airport is about 3663 km. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines to fly from Seattle to Montreal Pierre Elliott Trudeau Intl Airport one-way?
One-way options have recently been found by users for as low as C$ 155 on WestJet. Other airlines that offer cheap prices include Air Canada from C$ 261 and United Airlines from C$ 299 one-way.
Can I find deals for flights from Seattle to Pierre Elliott Trudeau Intl that include hotel bookings?
Yes. In addition to deals on Seattle to Pierre Elliott Trudeau Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Seattle to Pierre Elliott Trudeau Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Pierre Elliott Trudeau Intl.
Can I find deals for business class flights from Seattle to Pierre Elliott Trudeau Intl?
Yes. Cheapflights offers flight deals from Seattle to Pierre Elliott Trudeau Intl 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 Seattle to Montreal Pierre Elliott Trudeau Intl Airport?
Currently, October is the cheapest month in which you can book a flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 735). Flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport in January is currently the most expensive (average of C$ 1,401). 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 Seattle to Pierre Elliott Trudeau Intl by cabin class
Find flights from Seattle to Pierre Elliott Trudeau Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Explore flights to Pierre Elliott Trudeau Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 8 August 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 Seattle to Pierre Elliott Trudeau Intl?
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 Pierre Elliott Trudeau Intl from Seattle today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from Seattle to Pierre Elliott Trudeau Intl?
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 Seattle to Pierre Elliott Trudeau Intl.
Can Cheapflights find flights from Seattle to Pierre Elliott Trudeau Intl with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Pierre Elliott Trudeau Intl flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Seattle to Pierre Elliott Trudeau Intl become cheaper?
Yes, Cheapflights offers price alerts on Seattle to Pierre Elliott Trudeau Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.
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