$179+ 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA ā YUL
Aug 26 ā Sep 21
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 Sunday or Wednesday and return on a Wednesday
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 July 27, 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 July 27, 2026.
This Mytrip deal was found by Cheapflights users on 7/25. 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 Mytrip is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 9/87:35 pm
SEA
- YUL
1 stop8h 30m
Multiple Airlines
Tue 9/156:00 pm
YUL
- SEA
1 stop7h 47m
Multiple Airlines
Deal found 7/25![Multiple Airlines logo]()
$396
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 10/67:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Thu 10/156:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 7/24![WestJet logo]()
$397
This Kiwi.com deal was found by Cheapflights users on 7/26. 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.
Sun 10/187:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Fri 10/236:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 7/26![WestJet logo]()
$399
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Sun 10/187:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Thu 11/124:15 pm
YUL
- SEA
1 stop24h 05m
WestJet
Deal found 7/23![WestJet logo]()
$403
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Mon 10/197:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Mon 11/94:15 pm
YUL
- SEA
1 stop24h 05m
WestJet
Deal found 7/23![WestJet logo]()
$404
This FlightHub deal was found by Cheapflights users on 7/26. 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.
Sun 10/47:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Sat 10/105:30 pm
YUL
- SEA
1 stop19h 10m
WestJet
Deal found 7/26![WestJet logo]()
$405
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Mon 10/197:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Sat 11/144:15 pm
YUL
- SEA
1 stop24h 05m
WestJet
Deal found 7/23![WestJet logo]()
$406
This Flightnetwork deal was found by Cheapflights users on 7/26. 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 Flightnetwork is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 9/95:50 am
SEA
- YUL
1 stop8h 09m
Air Canada
Wed 9/166:00 pm
YUL
- SEA
1 stop7h 47m
Air Canada
Deal found 7/26![Air Canada logo]()
$407
This Gotogate deal was found by Cheapflights users on 7/27. 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 Gotogate is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/57:20 pm
SEA
- YUL
2 stops8h 50m
Air Canada
Sat 9/124:10 pm
YUL
- SEA
2 stops9h 37m
Air Canada
Deal found 7/27![Air Canada logo]()
$410
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Sun 10/187:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Tue 11/104:15 pm
YUL
- SEA
1 stop24h 05m
WestJet
Deal found 7/23![WestJet logo]()
$412
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 July 27, 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 July 27, 2026.
This Trip.com deal was found by Cheapflights users on 7/26. 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.
Sun 10/1810:30 am
SEA
- YUL
2 stops10h 55m
WestJet
Fri 10/236:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 7/26![WestJet logo]()
$402
This Delta deal was found by Cheapflights users on 7/24. 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 9/99:43 am
SEA
- YUL
1 stop10h 44m
Delta
Sat 9/127:00 am
YUL
- SEA
1 stop12h 45m
Delta
Deal found 7/24![Delta logo]()
$436
This Mytrip deal was found by Cheapflights users on 7/26. 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 Mytrip is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 8/205:50 am
SEA
- YUL
2 stops14h 53m
Air Canada
Wed 8/267:30 am
YUL
- SEA
1 stop14h 02m
Air Canada
Deal found 7/26![Air Canada logo]()
$476
This United Airlines deal was found by Cheapflights users on 7/25. 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 United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 8/225:20 pm
SEA
- YUL
1 stop11h 56m
United Airlines
Sat 8/296:10 am
YUL
- SEA
2 stops15h 58m
United Airlines
Deal found 7/25![United Airlines logo]()
$499
This American Airlines deal was found by Cheapflights users on 7/22. 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.
Mon 8/2411:16 pm
SEA
- YUL
1 stop12h 28m
American Airlines
Sun 8/307:29 am
YUL
- SEA
1 stop18h 20m
American Airlines
Deal found 7/22![American Airlines logo]()
$530
This Kiwi.com deal was found by Cheapflights users on 7/26. 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.
Mon 9/217:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Fri 9/258:00 pm
YUL
- SEA
1 stop16h 40m
WestJet
Deal found 7/26![WestJet logo]()
$435
This Delta deal was found by Cheapflights users on 7/22. 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 8/511:56 am
SEA
- YUL
1 stop8h 56m
Delta
Sat 8/1512:47 pm
YUL
- SEA
1 stop12h 18m
Delta
Deal found 7/22![Delta logo]()
$494
This United Airlines deal was found by Cheapflights users on 7/22. 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 United Airlines is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Mon 9/710:58 pm
SEA
- YUL
1 stop14h 12m
United Airlines
Thu 9/106:10 am
YUL
- SEA
2 stops15h 58m
United Airlines
Deal found 7/22![United Airlines logo]()
$547
This Delta deal was found by Cheapflights users on 7/24. 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 9/48:59 am
SEA
- YUL
1 stop11h 53m
Delta
Sun 9/65:10 pm
YUL
- SEA
1 stop7h 55m
Delta
Deal found 7/24![Delta logo]()
$508
This Delta deal was found by Cheapflights users on 7/22. 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.
Mon 9/78:59 am
SEA
- YUL
1 stop11h 41m
Delta
Thu 9/1012:48 pm
YUL
- SEA
1 stop12h 17m
Delta
Deal found 7/22![Delta logo]()
$520
This Delta deal was found by Cheapflights users on 7/22. 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.
Mon 8/1711:59 pm
SEA
- YUL
1 stop8h 40m
Delta
Wed 9/167:00 am
YUL
- SEA
1 stop12h 07m
Delta
Deal found 7/22![Delta logo]()
$584
This Delta deal was found by Cheapflights users on 7/25. 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 8/199:53 am
SEA
- YUL
1 stop10h 37m
Delta
Sun 8/2312:44 pm
YUL
- SEA
1 stop14h 13m
Delta
Deal found 7/25![Delta logo]()
$610
Last-minute flights from Seattle to Pierre Elliott Trudeau IntlDiscover last-minute flight deals from Seattle to Pierre Elliott Trudeau Intl. Data last updated July 27, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Pierre Elliott Trudeau Intl. Data last updated July 27, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/23. 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.
Sun 8/28:35 am
SEA
- YUL
1 stop12h 20m
Delta
Tue 8/116:00 am
YUL
- SEA
1 stop11h 34m
Delta
Deal found 7/23![Delta logo]()
$634
This Delta deal was found by Cheapflights users on 7/22. 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 8/511:56 am
SEA
- YUL
1 stop8h 56m
Delta
Sat 8/1512:47 pm
YUL
- SEA
1 stop12h 18m
Delta
Deal found 7/22![Delta logo]()
$494
This Justfly.com deal was found by Cheapflights users on 7/22. 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 Justfly.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 8/57:00 am
SEA
- YUL
2 stops14h 25m
WestJet
Sat 8/157:15 am
YUL
- SEA
1 stop29h 25m
WestJet
Deal found 7/22![WestJet logo]()
$510
This Mytrip deal was found by Cheapflights users on 7/22. 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 Mytrip is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 8/57:00 am
SEA
- YUL
3 stops22h 54m
Multiple Airlines
Sat 8/155:45 pm
YUL
- SEA
3 stops18h 55m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$624
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/67:00 am
SEA
- YUL
1 stop13h 45m
WestJet
Sat 8/88:00 pm
YUL
- SEA
1 stop16h 40m
WestJet
Deal found 7/23![WestJet logo]()
$442
This Kiwi.com deal was found by Cheapflights users on 7/23. 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 8/67:00 am
SEA
- YUL
2 stops22h 54m
Multiple Airlines
Sat 8/88:00 pm
YUL
- SEA
1 stop16h 40m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$496
This oojo deal was found by Cheapflights users on 7/23. 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 oojo is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 8/67:35 pm
SEA
- YUL
2 stops18h 10m
WestJet
Sun 8/96:45 am
YUL
- SEA
2 stops29h 55m
WestJet
Deal found 7/23![WestJet logo]()
$519
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 July 27, 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 July 27, 2026.
This Mytrip deal was found by Cheapflights users on 7/26. 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 Mytrip is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sun 9/277:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 7/26![WestJet logo]()
$179
This Mytrip deal was found by Cheapflights users on 7/24. 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 Mytrip is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Tue 9/157:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 7/24![WestJet logo]()
$180
This Gotogate deal was found by Cheapflights users on 7/26. 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 Gotogate is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 10/227:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 7/26![WestJet logo]()
$181
This Booking.com deal was found by Cheapflights users on 7/25. 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 8/217:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 7/25![WestJet logo]()
$185
This FlightHub deal was found by Cheapflights users on 7/26. 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 8/287:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 7/26![WestJet logo]()
$186
This oojo deal was found by Cheapflights users on 7/24. 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 oojo is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 8/207:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 7/24![WestJet logo]()
$189
This FlightHub deal was found by Cheapflights users on 7/26. 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
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 7/26![WestJet logo]()
$190
This oojo deal was found by Cheapflights users on 7/22. 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 oojo is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 10/110:30 am
SEA
- YUL
2 stops10h 55m
WestJet
Deal found 7/22![WestJet logo]()
$192
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 July 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $396 (Mytrip) |
One-way from | $179 (Mytrip) |
Popular in | January |
Cheapest in | October |
Average price | $605 |
Good round-trip deal | $3,219 or less |
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 July 27, 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 - YUL
SEAYUL
Seattle/Tacoma Intl
Sun 10/18
10:30 am-12:25 am
2 stops10h 55m
Montreal Pierre Elliott Trudeau Intl
Fri 10/23
6:45 am-6:45 pm
2 stops15h 00m
$402
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Mon 9/21
7:35 pm-7:05 am
1 stop8h 30m
Montreal Pierre Elliott Trudeau Intl
Fri 9/25
8:00 pm-9:40 am
1 stop16h 40m
$435
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Wed 9/9
9:43 am-11:27 pm
1 stop10h 44m
Montreal Pierre Elliott Trudeau Intl
Sat 9/12
7:00 am-4:45 pm
1 stop12h 45m
$436
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Thu 8/20
5:50 am-11:43 pm
2 stops14h 53m
Montreal Pierre Elliott Trudeau Intl
Wed 8/26
7:30 am-6:32 pm
1 stop14h 02m
$476
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Wed 8/5
11:56 am-11:52 pm
1 stop8h 56m
Montreal Pierre Elliott Trudeau Intl
Sat 8/15
12:47 pm-10:05 pm
1 stop12h 18m
$494
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Sat 8/22
5:20 pm-8:16 am
1 stop11h 56m
Montreal Pierre Elliott Trudeau Intl
Sat 8/29
6:10 am-7:08 pm
2 stops15h 58m
$499
Quickest round-trip
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Fri 9/4
8:59 am-11:52 pm
1 stop11h 53m
Montreal Pierre Elliott Trudeau Intl
Sun 9/6
5:10 pm-10:05 pm
1 stop7h 55m
$508
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Mon 9/7
8:59 am-11:40 pm
1 stop11h 41m
Montreal Pierre Elliott Trudeau Intl
Thu 9/10
12:48 pm-10:05 pm
1 stop12h 17m
$520
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Mon 8/24
11:16 pm-2:44 pm
1 stop12h 28m
Montreal Pierre Elliott Trudeau Intl
Sun 8/30
7:29 am-10:49 pm
1 stop18h 20m
$530
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Mon 9/7
10:58 pm-4:10 pm
1 stop14h 12m
Montreal Pierre Elliott Trudeau Intl
Thu 9/10
6:10 am-7:08 pm
2 stops15h 58m
$547
Showing 1-10 of 23 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 $520). 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 $396 on Multiple Airlines (Sep 8-Sep 15).
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 July 27, 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
Overall
7.8
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Overall
7.8
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Overall
7.8
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Overall
7.8
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Entertainment
7.8
Overall
7.8
Boarding
8.1
Crew
8.5
Food
7.2
Comfort
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 July 27, 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 July 27, 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 July 27, 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 July 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$198 | Average$369 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$265 | Average$712 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$318 | Average$575 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$436 | Average$731 | FlexibilityNo cancel fee | On-time67% |