$170+ Cheap flights from Seattle (SEA) to Montreal (YMQ)
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 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YMQ
Jul 9 — Jul 161
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Montreal 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 are usually found in March or September, booked 76 days in advance, depart on a Wednesday or Monday and return on a Friday
Cheap flight deals from Seattle to Montreal
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to MontrealExplore the most affordable flight options available from Seattle to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 9, 2026.
Explore the most affordable flight options available from Seattle to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 9, 2026.
This CheapOair deal was found by Cheapflights users on 6/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/47:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Sat 10/106:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 6/8![WestJet logo]()
$383
This Booking.com deal was found by Cheapflights users on 6/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Mon 9/148:00 pm
YUL
- SEA
1 stop25h 45m
WestJet
Deal found 6/8![WestJet logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Thu 9/247:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Sun 10/46:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 6/8![WestJet logo]()
$401
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Thu 9/247:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Thu 10/16:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 6/8![WestJet logo]()
$403
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Thu 9/247:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Wed 9/306:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 6/8![WestJet logo]()
$404
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Thu 9/247:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Mon 10/56:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 6/8![WestJet logo]()
$409
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Fri 9/257:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Sun 10/46:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 6/8![WestJet logo]()
$412
This Booking.com deal was found by Cheapflights users on 6/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Tue 7/286:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 6/7![WestJet logo]()
$413
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Fri 9/257:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Thu 10/16:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 6/8![WestJet logo]()
$414
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Fri 9/257:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Mon 10/56:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 6/8![WestJet logo]()
$420
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Thu 9/247:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Tue 10/67:15 am
YUL
- SEA
1 stop14h 30m
WestJet
Deal found 6/8![WestJet logo]()
$425
Best flights from Seattle to MontrealDiscover carefully curated flight deals from Seattle to Montreal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 9, 2026.
Discover carefully curated flight deals from Seattle to Montreal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 9, 2026.
This Delta deal was found by Cheapflights users on 6/7. 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.
Tue 9/296:00 am
SEA
- YUL
1 stop7h 19m
Delta
Wed 9/305:10 pm
YUL
- SEA
1 stop7h 52m
Delta
Deal found 6/7![Delta logo]()
$473
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Wed 9/2311:00 pm
SEA
- YUL
1 stop8h 40m
United Airlines
Mon 10/52:20 pm
YUL
- SEA
1 stop9h 17m
United Airlines
Deal found 6/8![United Airlines logo]()
$478
This United deal was found by Cheapflights users on 6/8. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/1611:59 pm
SEA
- YUL
1 stop12h 01m
Multiple Airlines
Sat 8/222:00 pm
YUL
- SEA
2 stops11h 42m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$503
This oojo deal was found by Cheapflights users on 6/4. 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.
Sun 8/210:30 am
SEA
- YUL
2 stops10h 55m
WestJet
Tue 8/115:45 pm
YUL
- SEA
2 stops28h 00m
WestJet
Deal found 6/4![WestJet logo]()
$548
This Delta deal was found by Cheapflights users on 6/7. 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 9/239:10 am
SEA
- YUL
1 stop11h 47m
Delta
Wed 9/305:10 pm
YUL
- SEA
1 stop7h 52m
Delta
Deal found 6/7![Delta logo]()
$473
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Mon 9/287:00 am
SEA
- YUL
1 stop7h 30m
United Airlines
Mon 10/56:35 pm
YUL
- SEA
1 stop9h 40m
United Airlines
Deal found 6/8![United Airlines logo]()
$478
This Delta deal was found by Cheapflights users on 6/7. 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 9/239:10 am
SEA
- YUL
1 stop11h 47m
Delta
Sat 9/267:00 am
YUL
- SEA
1 stop8h 58m
Delta
Deal found 6/7![Delta logo]()
$473
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Sun 9/2711:13 pm
SEA
- YUL
1 stop8h 27m
United Airlines
Mon 10/56:35 pm
YUL
- SEA
1 stop9h 40m
United Airlines
Deal found 6/8![United Airlines logo]()
$478
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Sat 9/265:00 am
SEA
- YUL
1 stop7h 29m
United Airlines
Mon 10/54:30 pm
YUL
- SEA
1 stop9h 29m
United Airlines
Deal found 6/8![United Airlines logo]()
$478
This Mytrip deal was found by Cheapflights users on 6/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Sun 8/235:45 pm
YUL
- SEA
3 stops18h 55m
WestJet
Deal found 6/5![WestJet logo]()
$619
This United Airlines deal was found by Cheapflights users on 6/8. 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.
Mon 7/2011:20 pm
SEA
- YUL
1 stop9h 07m
United Airlines
Sat 7/251:10 pm
YUL
- SEA
1 stop9h 26m
United Airlines
Deal found 6/8![United Airlines logo]()
$499
This Delta deal was found by Cheapflights users on 6/7. 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 7/37:30 am
SEA
- YUL
2 stops13h 12m
Delta
Mon 8/312:44 pm
YUL
- SEA
1 stop14h 13m
Delta
Deal found 6/7![Delta logo]()
$632
Last-minute flights from Seattle to MontrealDiscover last-minute flight deals from Seattle to Montreal. Data last updated June 9, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Montreal. Data last updated June 9, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 6/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/27:35 pm
SEA
- YUL
1 stop8h 30m
Multiple Airlines
Wed 7/89:30 pm
YUL
- SEA
1 stop15h 37m
Multiple Airlines
Deal found 6/4![Multiple Airlines logo]()
$425
This Booking.com deal was found by Cheapflights users on 6/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/107:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Thu 7/166:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 6/6![WestJet logo]()
$433
This Booking.com deal was found by Cheapflights users on 6/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Tue 7/286:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 6/7![WestJet logo]()
$413
This Booking.com deal was found by Cheapflights users on 6/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:35 pm
SEA
- YUL
1 stop8h 30m
Multiple Airlines
Tue 7/289:30 pm
YUL
- SEA
1 stop15h 37m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$426
This Booking.com deal was found by Cheapflights users on 6/5. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/2010:30 am
SEA
- YUL
2 stops10h 55m
WestJet
Mon 7/276:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 6/5![WestJet logo]()
$436
This Booking.com deal was found by Cheapflights users on 6/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/237:35 pm
SEA
- YUL
1 stop8h 30m
Multiple Airlines
Wed 7/291:00 pm
YUL
- SEA
1 stop11h 07m
Multiple Airlines
Deal found 6/7![Multiple Airlines logo]()
$432
One-way flights from Seattle to MontrealSearch for one-way flight options from Seattle to Montreal. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.
Search for one-way flight options from Seattle to Montreal. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.
This Air Canada deal was found by Cheapflights users on 6/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:00 am
SEA
- YUL
1 stop8h 21m
Air Canada
Deal found 6/8![Air Canada logo]()
$170
This Booking.com deal was found by Cheapflights users on 6/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:30 am
SEA
- YUL
2 stops10h 55m
WestJet
Deal found 6/8![WestJet logo]()
$173
This Booking.com deal was found by Cheapflights users on 6/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 6/8![WestJet logo]()
$178
This Justfly.com deal was found by Cheapflights users on 6/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/257:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 6/8![WestJet logo]()
$184
This CheapOair deal was found by Cheapflights users on 6/6. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/17:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 6/6![WestJet logo]()
$185
This CheapOair deal was found by Cheapflights users on 6/5. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 6/5![WestJet logo]()
$186
This Booking.com deal was found by Cheapflights users on 6/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 6/7![WestJet logo]()
$187
This Booking.com deal was found by Cheapflights users on 6/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 6/8![WestJet logo]()
$188
This Booking.com deal was found by Cheapflights users on 6/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1710:30 am
SEA
- YUL
2 stops10h 55m
WestJet
Deal found 6/8![WestJet logo]()
$189
This oojo deal was found by Cheapflights users on 6/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1610:30 am
SEA
- YUL
2 stops10h 55m
WestJet
Deal found 6/8![WestJet logo]()
$193
Find flight deals from Seattle to Montreal
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Montreal (YMQ). 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 June 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $383 (CheapOair) |
One-way from | $170 (Air Canada) |
Popular in | December |
Cheapest in | March |
Average price | $679 |
Good round-trip deal | $3,219 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Montreal 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 June 9, 2026.
Use the filters below to find and compare flights from Seattle to Montreal that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Tue 9/29
6:00 am-4:19 pm
1 stop7h 19m
Montreal Pierre Elliott Trudeau Intl
Wed 9/30
5:10 pm-10:02 pm
1 stop7h 52m
$473
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Wed 9/23
9:10 am-11:57 pm
1 stop11h 47m
Montreal Pierre Elliott Trudeau Intl
Wed 9/30
5:10 pm-10:02 pm
1 stop7h 52m
$473
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Wed 9/23
9:10 am-11:57 pm
1 stop11h 47m
Montreal Pierre Elliott Trudeau Intl
Sat 9/26
7:00 am-12:58 pm
1 stop8h 58m
$473
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Wed 9/23
11:00 pm-10:40 am
1 stop8h 40m
Montreal Pierre Elliott Trudeau Intl
Mon 10/5
2:20 pm-8:37 pm
1 stop9h 17m
$478
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Mon 9/28
7:00 am-5:30 pm
1 stop7h 30m
Montreal Pierre Elliott Trudeau Intl
Mon 10/5
6:35 pm-1:15 am
1 stop9h 40m
$478
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Sun 9/27
11:13 pm-10:40 am
1 stop8h 27m
Montreal Pierre Elliott Trudeau Intl
Mon 10/5
6:35 pm-1:15 am
1 stop9h 40m
$478
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Sat 9/26
5:00 am-3:29 pm
1 stop7h 29m
Montreal Pierre Elliott Trudeau Intl
Mon 10/5
4:30 pm-10:59 pm
1 stop9h 29m
$478
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Mon 7/20
11:20 pm-11:27 am
1 stop9h 07m
Montreal Pierre Elliott Trudeau Intl
Sat 7/25
1:10 pm-7:36 pm
1 stop9h 26m
$499
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Sun 8/16
11:59 pm-3:00 pm
1 stop12h 01m
Montreal Pierre Elliott Trudeau Intl
Sat 8/22
2:00 pm-10:42 pm
2 stops11h 42m
$503
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Sun 8/2
10:30 am-12:25 am
2 stops10h 55m
Montreal Pierre Elliott Trudeau Intl
Tue 8/11
5:45 pm-6:45 pm
2 stops28h 00m
$548
Showing 1-10 of 24 resultsSorted by cheapest first
Compare providers for flights from Seattle to Montreal
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Montreal in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Montreal flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Montreal flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Montreal flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Montreal 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 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 Montreal
Have a flexible travel schedule? Discover the best time to fly to Montreal from Seattle with our price prediction graph.
SEA-YMQ
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
SEA-YMQ
SEA-YUL
What is the cheapest month to book a flight from Seattle to Montreal?
Currently, May is the cheapest month in which you can book a flight from Seattle to Montreal (average of $151). Flying from Seattle to Montreal in April is currently the most expensive (average of $428). 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?
How far ahead should I book a flight from Seattle to Montreal?
The price you pay for your flight from Seattle to Montreal may vary depending on when you book. For the best chance of a lower fare, look to book 72 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Reviews of airlines servicing Montreal
Get insights into the airlines that provide service to Montreal. 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 Montreal. Reviews last updated June 9, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andWestJet from Seattle to Montreal by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.9
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Comfort
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Overall
7.9
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 Montreal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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
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Montreal flight routes
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Other flights from Seattle
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Alternative routes for Seattle to Montreal
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Montreal by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Montreal by cabin class
Find flights from Seattle to Montreal, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Montreal
Explore flights to Montreal departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 9, 2026.
Seattle and Montreal flights
Browse other Seattle and Montreal flight options. Last updated on June 9, 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 June 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Seattle to Montreal
Discover the top 4 airlines that operate flights from Seattle to Montreal. 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 June 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$265 | Average$712 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$281 | Average$369 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$310 | Average$619 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$374 | Average$711 | FlexibilityNo cancel fee | On-time67% |