$130+ Cheap flights from Seattle (SEA) to Pierre Elliott Trudeau Intl (YUL)
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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA ā YUL
Sep 15 ā Sep 221
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Seattle to Pierre Elliott Trudeau Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click āFind dealsā2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each providerās pricing and select the best option for you! Book through your favorite providerās website for a seamless experience.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 Sunday and return on a Monday
Cheap flight deals from Seattle to Pierre Elliott Trudeau Intl
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to Pierre Elliott Trudeau IntlExplore 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 August 16, 2026.
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 August 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/187:35 pm -
1 stop8h 30m
Mon 9/286:45 am -
2 stops15h 00m
Deal found 8/15![WestJet logo]()
$288
This Trip.com deal was found by Cheapflights users on 8/14. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Trip.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/117:35 pm -
1 stop8h 30m
Tue 9/156:45 am -
2 stops15h 00m
Deal found 8/14![WestJet logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 9/97:35 pm -
1 stop8h 30m
Mon 9/148:00 pm -
1 stop16h 40m
Deal found 8/15![WestJet logo]()
$309
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/127:35 pm -
1 stop8h 30m
Sat 9/197:15 am -
1 stop14h 30m
Deal found 8/13![WestJet logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 9/177:35 pm -
1 stop8h 30m
Mon 9/218:00 pm -
1 stop25h 45m
Deal found 8/15![WestJet logo]()
$311
This FlightHub deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure FlightHub is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/257:35 pm -
1 stop8h 30m
Sun 9/275:30 pm -
1 stop19h 10m
Deal found 8/13![WestJet logo]()
$312
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/257:35 pm -
1 stop8h 30m
Mon 9/286:45 am -
2 stops15h 00m
Deal found 8/13![WestJet logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/197:35 pm -
1 stop8h 30m
Mon 9/286:45 am -
2 stops15h 00m
Deal found 8/14![WestJet logo]()
$323
This Trip.com deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Trip.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/257:35 pm -
1 stop8h 30m
Wed 9/307:15 am -
1 stop14h 30m
Deal found 8/13![WestJet logo]()
$325
This FlightHub deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure FlightHub is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/127:35 pm -
1 stop8h 30m
Wed 9/168:00 pm -
1 stop16h 40m
Deal found 8/13![WestJet logo]()
$335
Best flights from Seattle to Pierre Elliott Trudeau IntlDiscover 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 August 16, 2026.
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 August 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/127:35 pm -
1 stop8h 30m
Sat 9/197:15 am -
1 stop14h 30m
Deal found 8/15![WestJet logo]()
$310
This Delta deal was found by Cheapflights users on 8/15. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 11/186:00 am -
1 stop8h 29m
Tue 11/247:00 am -
1 stop12h 43m
Deal found 8/15![Delta logo]()
$454
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 10/217:35 pm -
1 stop8h 30m
Mon 10/265:25 pm -
2 stops23h 55m
Deal found 8/14![Multiple Airlines logo]()
$467
This Air Canada deal was found by Cheapflights users on 8/11. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Air Canada is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sun 10/45:40 am -
1 stop8h 14m
Fri 10/93:30 pm -
1 stop8h 34m
Deal found 8/11![Air Canada logo]()
$467
This American Airlines deal was found by Cheapflights users on 8/15. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 12/16:12 am -
2 stops12h 14m
Sat 12/57:33 am -
2 stops11h 11m
Deal found 8/15![American Airlines logo]()
$469
This Booking.com deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Booking.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/2510:30 am -
2 stops10h 55m
Wed 9/306:45 am -
2 stops15h 00m
Deal found 8/13![WestJet logo]()
$387
This FlightHub deal was found by Cheapflights users on 8/15. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure FlightHub is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 9/177:35 pm -
2 stops18h 10m
Mon 9/215:45 pm -
2 stops28h 00m
Deal found 8/15![WestJet logo]()
$396
This Delta deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 2/46:00 am -
1 stop6h 59m
Sat 2/612:45 pm -
1 stop14h 24m
Deal found 8/13![Delta logo]()
$455
This Delta deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 2/56:00 am -
1 stop6h 59m
Sat 2/64:55 pm -
1 stop8h 10m
Deal found 8/13![Delta logo]()
$455
This Delta deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 2/37:50 am -
1 stop13h 01m
Fri 2/1212:45 pm -
1 stop12h 20m
Deal found 8/13![Delta logo]()
$455
Last-minute flights from Seattle to Pierre Elliott Trudeau IntlDiscover last-minute flight deals from Seattle to Pierre Elliott Trudeau Intl. Data last updated August 16, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Pierre Elliott Trudeau Intl. Data last updated August 16, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 9/97:35 pm -
1 stop8h 30m
Mon 9/148:00 pm -
1 stop16h 40m
Deal found 8/15![WestJet logo]()
$309
This Trip.com deal was found by Cheapflights users on 8/14. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Trip.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/117:35 pm -
1 stop8h 30m
Tue 9/156:45 am -
2 stops15h 00m
Deal found 8/14![WestJet logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/127:35 pm -
1 stop8h 30m
Sat 9/197:15 am -
1 stop14h 30m
Deal found 8/13![WestJet logo]()
$310
This FlightHub deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure FlightHub is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/127:35 pm -
1 stop8h 30m
Wed 9/168:00 pm -
1 stop16h 40m
Deal found 8/13![WestJet logo]()
$335
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 9/177:35 pm -
1 stop8h 30m
Mon 9/218:00 pm -
1 stop25h 45m
Deal found 8/15![WestJet logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 8/15. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/187:35 pm -
1 stop8h 30m
Mon 9/286:45 am -
2 stops15h 00m
Deal found 8/15![WestJet logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/197:35 pm -
1 stop8h 30m
Mon 9/286:45 am -
2 stops15h 00m
Deal found 8/14![WestJet logo]()
$323
This FlightHub deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure FlightHub is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/257:35 pm -
1 stop8h 30m
Sun 9/275:30 pm -
1 stop19h 10m
Deal found 8/13![WestJet logo]()
$312
This Kiwi.com deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/257:35 pm -
1 stop8h 30m
Mon 9/286:45 am -
2 stops15h 00m
Deal found 8/13![WestJet logo]()
$314
This Trip.com deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Trip.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/257:35 pm -
1 stop8h 30m
Wed 9/307:15 am -
1 stop14h 30m
Deal found 8/13![WestJet logo]()
$325
One-way flights from Seattle to Pierre Elliott Trudeau IntlSearch for one-way flight options from Seattle to Pierre Elliott Trudeau Intl. Find affordable one-way fares based on user searches. Data last updated August 16, 2026.
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 August 16, 2026.
This FlightHub deal was found by Cheapflights users on 8/13. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure FlightHub is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/257:35 pm -
1 stop8h 30m
Deal found 8/13![WestJet logo]()
$130
This Trip.com deal was found by Cheapflights users on 8/15. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Trip.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 9/307:35 pm -
1 stop8h 30m
Deal found 8/15![WestJet logo]()
$147
This Booking.com deal was found by Cheapflights users on 8/15. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Booking.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sun 9/2710:30 am -
2 stops10h 55m
Deal found 8/15![WestJet logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 9/2310:30 am -
2 stops10h 55m
Deal found 8/14![WestJet logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 9/17:07 pm -
2 stops25h 38m
Deal found 8/14![Multiple Airlines logo]()
$164
This Delta deal was found by Cheapflights users on 8/15. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/49:53 am -
1 stop10h 37m
Deal found 8/15![Delta logo]()
$165
This American Airlines deal was found by Cheapflights users on 8/14. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure American Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/2511:57 pm -
2 stops12h 32m
Deal found 8/14![American Airlines logo]()
$171
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 August 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $288 (Kiwi.com) |
One-way from | $130 (FlightHub) |
Popular in | January |
Cheapest in | October |
Average price | $652 |
Cheapflights Fare Finder
Ā
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 2,558,603 searches. Data last updated August 16, 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
Cheapest round-trip
SeattleMontreal
SEAĀ Seattle/Tacoma Intl - YULĀ Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Sat 9/12
7:35 pm-7:05 am
1 stop8h 30m
Montreal Pierre Elliott Trudeau Intl
Sat 9/19
7:15 am-6:45 pm
1 stop14h 30m
$310
SeattleMontreal
SEAĀ Seattle/Tacoma Intl - YULĀ Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Fri 9/25
10:30 am-12:25 am
2 stops10h 55m
Montreal Pierre Elliott Trudeau Intl
Wed 9/30
6:45 am-6:45 pm
2 stops15h 00m
$387
SeattleMontreal
SEAĀ Seattle/Tacoma Intl - YULĀ Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Thu 9/17
7:35 pm-4:45 pm
2 stops18h 10m
Montreal Pierre Elliott Trudeau Intl
Mon 9/21
5:45 pm-6:45 pm
2 stops28h 00m
$396
SeattleMontreal
SEAĀ Seattle/Tacoma Intl - YULĀ Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Wed 11/18
6:00 am-5:29 pm
1 stop8h 29m
Montreal Pierre Elliott Trudeau Intl
Tue 11/24
7:00 am-4:43 pm
1 stop12h 43m
$454
SeattleMontreal
SEAĀ Seattle/Tacoma Intl - YULĀ Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Thu 2/4
6:00 am-3:59 pm
1 stop6h 59m
Montreal Pierre Elliott Trudeau Intl
Sat 2/6
12:45 pm-12:09 am
1 stop14h 24m
$455
Quickest round-trip
SeattleMontreal
SEAĀ Seattle/Tacoma Intl - YULĀ Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Fri 2/5
6:00 am-3:59 pm
1 stop6h 59m
Montreal Pierre Elliott Trudeau Intl
Sat 2/6
4:55 pm-10:05 pm
1 stop8h 10m
$455
SeattleMontreal
SEAĀ Seattle/Tacoma Intl - YULĀ Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Wed 2/3
7:50 am-11:51 pm
1 stop13h 01m
Montreal Pierre Elliott Trudeau Intl
Fri 2/12
12:45 pm-10:05 pm
1 stop12h 20m
$455
SeattleMontreal
SEAĀ Seattle/Tacoma Intl - YULĀ Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Wed 10/21
7:35 pm-7:05 am
1 stop8h 30m
Montreal Pierre Elliott Trudeau Intl
Mon 10/26
5:25 pm-2:20 pm
2 stops23h 55m
$467
SeattleMontreal
SEAĀ Seattle/Tacoma Intl - YULĀ Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Sun 10/4
5:40 am-4:54 pm
1 stop8h 14m
Montreal Pierre Elliott Trudeau Intl
Fri 10/9
3:30 pm-9:04 pm
1 stop8h 34m
$467
SeattleMontreal
SEAĀ Seattle/Tacoma Intl - YULĀ Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Tue 12/1
6:12 am-9:26 pm
2 stops12h 14m
Montreal Pierre Elliott Trudeau Intl
Sat 12/5
7:33 am-3:44 pm
2 stops11h 11m
$469
Showing 1-10 of 21 resultsSorted by cheapest first
- Most accurate provider: When it comes to deals on Seattle-Montreal Pierre Elliott Trudeau Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Montreal Pierre Elliott Trudeau Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Montreal Pierre Elliott Trudeau Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Montreal Pierre Elliott Trudeau Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Montreal Pierre Elliott Trudeau Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
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 best time to book flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport is 74 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 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 $526). Flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport in January is currently the most expensive (average of $1,002). 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 $456 and $720 in September.The cheapest round-trip price found within the last 5 days was $288 on WestJet (Sep 18-Sep 28).
Reviews of airlines servicing Pierre Elliott Trudeau Intl
Get insights into the airlines that provide service to Pierre Elliott Trudeau Intl. 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 Pierre Elliott Trudeau Intl. Reviews last updated August 16, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andWestJet from Seattle to Montreal Pierre Elliott Trudeau Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Overall
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Overall
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Overall
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Overall
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Overall
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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.
Traveling to a place near Montreal Pierre Elliott Trudeau Intl Airport?
Book flights to Montreal Pierre Elliott Trudeau Intl Airport if you plan to visit one of these locationsLongueuil
Laval
Dorval
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Seattle
Pierre Elliott Trudeau Intl flight routes
Popular flights
Alternative routes for Seattle to Pierre Elliott Trudeau Intl
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Pierre Elliott Trudeau Intl by adding a car rental and/or hotel reservation to your travel itinerary.
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.
Seattle and Pierre Elliott Trudeau Intl flights
Browse other Seattle and Pierre Elliott Trudeau Intl flight options. Last updated on August 16, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on August 16, 2026.
Other flights to Pierre Elliott Trudeau Intl
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 August 16, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Seattle to Pierre Elliott Trudeau Intl
Discover the top 4 airlines that operate flights from Seattle to Pierre Elliott Trudeau Intl. 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 2,558,603 searches. Data last updated August 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$195 | Average$358 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$265 | Average$652 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$310 | Average$560 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$436 | Average$732 | FlexibilityNo cancel fee | On-time67% |