$133+ Cheap flights from Seattle (SEA) to Pierre Elliott Trudeau Intl (YUL)
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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YUL
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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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 “Find deals”2. 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 provider’s pricing and select the best option for you! Book through your favorite provider’s 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 August, booked 38 days in advance, depart on a Wednesday or Sunday and return on a Monday
Cheap flight deals from Seattle to Pierre Elliott Trudeau Intl
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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 September 10, 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 September 10, 2026.
This Trip.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:35 pm -
1 stop8h 30m
Tue 10/136:45 am -
2 stops15h 00m
Deal found 9/7![WestJet logo]()
$316
This Trip.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:35 pm -
1 stop8h 30m
Tue 10/136:45 am -
2 stops15h 00m
Deal found 9/8![WestJet logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:35 pm -
1 stop8h 30m
Sat 10/176:45 am -
2 stops15h 00m
Deal found 9/9![WestJet logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:35 pm -
1 stop8h 30m
Tue 10/66:45 am -
2 stops15h 00m
Deal found 9/9![WestJet logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:35 pm -
1 stop8h 30m
Thu 10/16:45 am -
2 stops15h 00m
Deal found 9/9![WestJet logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:35 pm -
1 stop8h 30m
Wed 10/76:45 am -
2 stops15h 00m
Deal found 9/6![WestJet logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:35 pm -
1 stop8h 30m
Sun 10/188:00 pm -
1 stop16h 40m
Deal found 9/8![WestJet logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:35 pm -
1 stop8h 30m
Wed 10/146:45 am -
2 stops15h 00m
Deal found 9/5![WestJet logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:35 pm -
1 stop8h 30m
Sat 10/176:45 am -
2 stops15h 00m
Deal found 9/5![WestJet logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:35 pm -
1 stop8h 30m
Wed 10/76:45 am -
2 stops15h 00m
Deal found 9/6![WestJet logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:35 pm -
1 stop8h 30m
Wed 10/286:45 am -
2 stops10h 55m
Deal found 9/6![WestJet logo]()
$339
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:35 pm -
1 stop8h 30m
Tue 10/137:15 am -
1 stop14h 30m
Deal found 9/9![WestJet logo]()
$340
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 September 10, 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 September 10, 2026.
This Air Canada deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:40 am -
1 stop8h 50m
Fri 11/207:30 am -
1 stop10h 07m
Deal found 9/9![Air Canada logo]()
$412
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2011:13 pm -
1 stop15h 17m
Tue 10/273:00 pm -
1 stop9h 39m
Deal found 9/5![United Airlines logo]()
$486
This Delta deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1811:15 pm -
1 stop9h 37m
Fri 11/2012:44 pm -
1 stop14h 13m
Deal found 9/8![Delta logo]()
$487
This oojo deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/182:30 pm -
2 stops31h 00m
Fri 11/204:15 pm -
1 stop24h 25m
Deal found 9/9![WestJet logo]()
$502
This United Airlines deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/75:07 am -
2 stops13h 33m
Sun 1/107:00 am -
1 stop9h 00m
Deal found 9/8![United Airlines logo]()
$494
This United Airlines deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:07 pm -
1 stop14h 33m
Mon 10/56:35 pm -
1 stop9h 40m
Deal found 9/7![United Airlines logo]()
$506
This Delta deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/308:59 am -
1 stop11h 51m
Sun 10/412:48 pm -
1 stop12h 17m
Deal found 9/7![Delta logo]()
$562
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:20 pm -
1 stop11h 56m
Mon 10/56:35 pm -
1 stop9h 40m
Deal found 9/6![United Airlines logo]()
$506
This Delta deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/1910:35 pm -
2 stops22h 00m
Thu 3/47:00 am -
2 stops14h 55m
Deal found 9/7![Delta logo]()
$577
This United Airlines deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:00 am -
1 stop7h 30m
Mon 10/196:35 pm -
1 stop9h 40m
Deal found 9/5![United Airlines logo]()
$506
This Delta deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/248:30 am -
2 stops12h 05m
Thu 3/47:00 am -
2 stops16h 50m
Deal found 9/7![Delta logo]()
$577
This United Airlines deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/277:00 am -
1 stop7h 30m
Thu 10/86:35 pm -
1 stop9h 40m
Deal found 9/6![United Airlines logo]()
$525
Last-minute flights from Seattle to Pierre Elliott Trudeau IntlDiscover last-minute flight deals from Seattle to Pierre Elliott Trudeau Intl. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Pierre Elliott Trudeau Intl. Data last updated September 10, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:35 pm -
1 stop8h 30m
Wed 10/76:45 am -
2 stops15h 00m
Deal found 9/6![WestJet logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:35 pm -
1 stop8h 30m
Sat 10/36:45 am -
2 stops15h 00m
Deal found 9/9![WestJet logo]()
$331
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:35 pm -
1 stop8h 30m
Wed 10/76:45 am -
2 stops15h 00m
Deal found 9/6![WestJet logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/297:35 pm -
1 stop8h 30m
Tue 10/66:45 am -
2 stops15h 00m
Deal found 9/9![WestJet logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/27:35 pm -
1 stop8h 30m
Sat 10/176:45 am -
2 stops15h 00m
Deal found 9/5![WestJet logo]()
$337
This Trip.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:35 pm -
1 stop8h 30m
Tue 10/136:45 am -
2 stops15h 00m
Deal found 9/8![WestJet logo]()
$317
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:35 pm -
1 stop8h 30m
Mon 10/196:45 am -
2 stops15h 00m
Deal found 9/5![WestJet logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:35 pm -
1 stop8h 30m
Tue 10/137:15 am -
1 stop14h 30m
Deal found 9/9![WestJet logo]()
$340
This Trip.com deal was found by Cheapflights users on 9/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:35 pm -
1 stop8h 30m
Tue 10/136:45 am -
2 stops15h 00m
Deal found 9/7![WestJet logo]()
$316
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:35 pm -
1 stop8h 30m
Sat 10/176:45 am -
2 stops15h 00m
Deal found 9/9![WestJet logo]()
$324
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:35 pm -
1 stop8h 30m
Sun 10/188:00 pm -
1 stop16h 40m
Deal found 9/8![WestJet logo]()
$333
This Kiwi.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/217:35 pm -
1 stop8h 30m
Wed 10/286:45 am -
2 stops10h 55m
Deal found 9/6![WestJet logo]()
$339
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 September 10, 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 September 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:35 pm -
1 stop8h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![WestJet logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:35 pm -
1 stop8h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![WestJet logo]()
$136
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/117:35 pm -
1 stop8h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![WestJet logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:35 pm -
1 stop8h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![WestJet logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:35 pm -
1 stop8h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![WestJet logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1510:30 am -
2 stops10h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![WestJet logo]()
$148
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:35 pm -
1 stop8h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![WestJet logo]()
$149
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/267:35 pm -
1 stop8h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![WestJet logo]()
$150
This deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/67:35 pm -
1 stop8h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![WestJet logo]()
$155
This Trip.com deal was found by Cheapflights users on 9/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1810:30 am -
2 stops10h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![WestJet logo]()
$159
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 September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $316 (Trip.com) |
One-way from | $133 (Kiwi.com) |
Popular in | January |
Cheapest in | October |
Average price | $704 |
Cheapflights Fare Finder
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 7,457,451 searches. Data last updated September 10, 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
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Thu 10/22
10:30 am-12:25 am
2 stops10h 55m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$148
Quickest round-trip
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Sat 10/24
5:50 am-4:59 pm
1 stop8h 09m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$181
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Tue 11/24
7:05 pm-7:50 am
1 stop9h 45m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$204
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Mon 9/28
11:13 pm-10:40 am
1 stop8h 27m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$218
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Sun 10/11
7:35 pm-12:25 am
2 stops25h 50m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$220
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Fri 9/25
8:29 pm-8:16 am
1 stop8h 47m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$223
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Fri 11/6
8:40 am-8:30 pm
1 stop8h 50m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$223
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Sat 11/7
12:20 pm-1:28 pm
3 stops22h 08m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$224
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Fri 11/6
11:34 pm-3:28 pm
2 stops12h 54m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$233
SeattleMontreal
SEA Seattle/Tacoma Intl - YUL Montreal Pierre Elliott Trudeau Intl
SEAYUL
Seattle/Tacoma Intl
Tue 10/6
6:12 am-9:30 pm
2 stops12h 18m
Montreal Pierre Elliott Trudeau Intl
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$237
Showing 1-10 of 24 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 36 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 $608 and $927 in October.The cheapest round-trip price found within the last 5 days was $316 on WestJet (Oct 10-Oct 13).
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 September 10, 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.
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Crew
8.5
Overall
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Crew
8.5
Overall
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 locationsCornwall
Longueuil
Laval
Dorval
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Seattle and Pierre Elliott Trudeau Intl flights
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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 7,457,451 searches. Data last updated September 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$151 | Average$369 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$265 | Average$668 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$310 | Average$560 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$440 | Average$739 | FlexibilityNo cancel fee | On-time67% |