$179+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA ā YMQ
Aug 5 ā Aug 121
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 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 are usually found in March or September, booked 76 days in advance, depart on a Wednesday or Sunday and return on a Tuesday
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 July 6, 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 July 6, 2026.
This Gotogate deal was found by Cheapflights users on 7/2. 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 8/135:50 am
SEA
- YUL
2 stops11h 45m
Air Canada
Wed 8/191:30 pm
YUL
- SEA
2 stops12h 12m
Air Canada
Deal found 7/2![Air Canada logo]()
$382
This Gotogate deal was found by Cheapflights users on 7/2. 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 9/177:35 pm
SEA
- YUL
1 stop8h 30m
Multiple Airlines
Tue 9/226:00 pm
YUL
- SEA
1 stop7h 42m
Multiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$387
This Flightnetwork deal was found by Cheapflights users on 7/3. 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.
Thu 8/137:35 pm
SEA
- YUL
1 stop8h 30m
Multiple Airlines
Wed 8/191:30 pm
YUL
- SEA
2 stops12h 12m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$393
This Flightnetwork deal was found by Cheapflights users on 7/4. 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 8/195:50 am
SEA
- YUL
2 stops14h 53m
Air Canada
Wed 8/269:15 am
YUL
- SEA
2 stops12h 17m
Air Canada
Deal found 7/4![Air Canada logo]()
$398
This Trip.com deal was found by Cheapflights users on 7/4. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Trip.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 9/47:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Tue 9/86:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 7/4![WestJet logo]()
$405
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 9/247:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Sun 9/276:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 7/2![WestJet logo]()
$406
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 July 6, 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 July 6, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/5. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 10/27:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Mon 10/127:15 am
YUL
- SEA
1 stop14h 30m
WestJet
Deal found 7/5![WestJet logo]()
$416
This Air Canada deal was found by Cheapflights users on 7/5. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Air Canada is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 10/33:00 pm
SEA
- YUL
2 stops13h 10m
Air Canada
Sat 10/106:00 pm
YUL
- SEA
1 stop7h 42m
Air Canada
Deal found 7/5![Air Canada logo]()
$474
This Delta deal was found by Cheapflights users on 7/1. 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.
Tue 9/19:10 am
SEA
- YUL
1 stop11h 42m
Delta
Sun 9/65:10 pm
YUL
- SEA
1 stop7h 55m
Delta
Deal found 7/1![Delta logo]()
$485
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Tue 9/17:00 am
SEA
- YUL
1 stop7h 30m
United Airlines
Tue 9/89:45 am
YUL
- SEA
1 stop9h 22m
United Airlines
Deal found 7/1![United Airlines logo]()
$498
This Kiwi.com deal was found by Cheapflights users on 7/5. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 10/37:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Fri 10/97:15 am
YUL
- SEA
1 stop14h 30m
WestJet
Deal found 7/5![WestJet logo]()
$416
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/3111:00 pm
SEA
- YUL
1 stop8h 40m
United Airlines
Sat 9/59:45 am
YUL
- SEA
1 stop15h 58m
United Airlines
Deal found 7/1![United Airlines logo]()
$498
This WestJet deal was found by Cheapflights users on 7/5. 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 WestJet is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Fri 10/210:30 am
SEA
- YUL
2 stops10h 55m
WestJet
Tue 10/136:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 7/5![WestJet logo]()
$497
This Delta deal was found by Cheapflights users on 7/1. 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 9/29:10 am
SEA
- YUL
1 stop11h 42m
Delta
Mon 9/77:00 am
YUL
- SEA
1 stop12h 00m
Delta
Deal found 7/1![Delta logo]()
$559
This Delta deal was found by Cheapflights users on 6/30. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Delta is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Thu 7/307:20 am
SEA
- YUL
1 stop13h 32m
Delta
Thu 8/612:47 pm
YUL
- SEA
1 stop12h 18m
Delta
Deal found 6/30![Delta logo]()
$583
This United Airlines deal was found by Cheapflights users on 7/1. 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.
Thu 8/1311:00 pm
SEA
- YUL
1 stop8h 40m
United Airlines
Wed 8/199:45 am
YUL
- SEA
1 stop9h 22m
United Airlines
Deal found 7/1![United Airlines logo]()
$598
This FlightHub deal was found by Cheapflights users on 7/5. 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.
Wed 8/2610:30 am
SEA
- YUL
2 stops27h 15m
WestJet
Mon 8/316:45 am
YUL
- SEA
2 stops15h 00m
WestJet
Deal found 7/5![WestJet logo]()
$553
This Delta deal was found by Cheapflights users on 7/1. 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 7/158:35 am
SEA
- YUL
1 stop12h 17m
Delta
Sun 7/197:00 am
YUL
- SEA
1 stop12h 49m
Delta
Deal found 7/1![Delta logo]()
$592
Last-minute flights from Seattle to MontrealDiscover last-minute flight deals from Seattle to Montreal. Data last updated July 6, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Montreal. Data last updated July 6, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/2. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 8/127:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Wed 9/97:15 am
YUL
- SEA
1 stop14h 30m
WestJet
Deal found 7/2![WestJet logo]()
$418
This Gotogate deal was found by Cheapflights users on 7/2. 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 8/135:50 am
SEA
- YUL
2 stops11h 45m
Air Canada
Wed 8/191:30 pm
YUL
- SEA
2 stops12h 12m
Air Canada
Deal found 7/2![Air Canada logo]()
$382
This Flightnetwork deal was found by Cheapflights users on 7/3. 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.
Thu 8/137:35 pm
SEA
- YUL
1 stop8h 30m
Multiple Airlines
Wed 8/191:30 pm
YUL
- SEA
2 stops12h 12m
Multiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$393
This Flightnetwork deal was found by Cheapflights users on 7/4. 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 8/195:50 am
SEA
- YUL
2 stops14h 53m
Air Canada
Wed 8/269:15 am
YUL
- SEA
2 stops12h 17m
Air Canada
Deal found 7/4![Air Canada logo]()
$398
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 July 6, 2026.
Search for one-way flight options from Seattle to Montreal. Find affordable one-way fares based on user searches. Data last updated July 6, 2026.
This oojo deal was found by Cheapflights users on 7/1. 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.
Fri 9/257:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 7/1![WestJet logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 7/3. 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 9/137:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 7/3![WestJet logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Sat 9/197:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 7/1![WestJet logo]()
$190
This Kiwi.com deal was found by Cheapflights users on 7/4. Clicking the āPick Datesā button in this card will allow you to select your dates and further customize your flight criteria. From there, click āFind dealsā, make sure Kiwi.com is selected, and click āCompare selectedā under the list of providers to see comparable flight deals.
Wed 9/97:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 7/4![WestJet logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/177:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 7/1![WestJet logo]()
$197
This oojo deal was found by Cheapflights users on 7/1. 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.
Fri 7/177:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 7/1![WestJet logo]()
$198
This oojo deal was found by Cheapflights users on 7/1. 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.
Fri 7/247:35 pm
SEA
- YUL
1 stop8h 30m
WestJet
Deal found 7/1![WestJet logo]()
$202
This oojo deal was found by Cheapflights users on 7/1. 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.
Fri 8/2810:30 am
SEA
- YUL
2 stops10h 55m
WestJet
Deal found 7/1![WestJet logo]()
$203
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 July 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $382 (Gotogate) |
One-way from | $179 (oojo) |
Popular in | June |
Cheapest in | March |
Average price | $672 |
Good round-trip deal | $3,219 or less |
Cheapflights Fare Finder
Ā
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 July 6, 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
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Fri 10/2
7:35 pm-7:05 am
1 stop8h 30m
Montreal Pierre Elliott Trudeau Intl
Mon 10/12
7:15 am-6:45 pm
1 stop14h 30m
$416
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Sat 10/3
7:35 pm-7:05 am
1 stop8h 30m
Montreal Pierre Elliott Trudeau Intl
Fri 10/9
7:15 am-6:45 pm
1 stop14h 30m
$416
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Sat 10/3
3:00 pm-7:10 am
2 stops13h 10m
Montreal Pierre Elliott Trudeau Intl
Sat 10/10
6:00 pm-10:42 pm
1 stop7h 42m
$474
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Tue 9/1
9:10 am-11:52 pm
1 stop11h 42m
Montreal Pierre Elliott Trudeau Intl
Sun 9/6
5:10 pm-10:05 pm
1 stop7h 55m
$485
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Fri 10/2
10:30 am-12:25 am
2 stops10h 55m
Montreal Pierre Elliott Trudeau Intl
Tue 10/13
6:45 am-6:45 pm
2 stops15h 00m
$497
Quickest round-trip
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Tue 9/1
7:00 am-5:30 pm
1 stop7h 30m
Montreal Pierre Elliott Trudeau Intl
Tue 9/8
9:45 am-4:07 pm
1 stop9h 22m
$498
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Mon 8/31
11:00 pm-10:40 am
1 stop8h 40m
Montreal Pierre Elliott Trudeau Intl
Sat 9/5
9:45 am-10:43 pm
1 stop15h 58m
$498
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Wed 8/26
10:30 am-4:45 pm
2 stops27h 15m
Montreal Pierre Elliott Trudeau Intl
Mon 8/31
6:45 am-6:45 pm
2 stops15h 00m
$553
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Wed 9/2
9:10 am-11:52 pm
1 stop11h 42m
Montreal Pierre Elliott Trudeau Intl
Mon 9/7
7:00 am-4:00 pm
1 stop12h 00m
$559
SeattleMontreal
SEA - YUL
SEAYUL
Seattle/Tacoma Intl
Thu 7/30
7:20 am-11:52 pm
1 stop13h 32m
Montreal Pierre Elliott Trudeau Intl
Thu 8/6
12:47 pm-10:05 pm
1 stop12h 18m
$583
Showing 1-10 of 23 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 July.
| 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 July 6, 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.
Food
7.2
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Food
7.2
Overall
7.8
Comfort
7.8
Crew
8.5
Entertainment
7.8
Boarding
8.1
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
Complete your trip
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Montreal flight routes
Other flight options
Other flights from Seattle
Popular flights
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 July 6, 2026.
Seattle and Montreal flights
Browse other Seattle and Montreal flight options. Last updated on July 6, 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 6, 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 July 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$198 | Average$358 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$265 | Average$626 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$310 | Average$619 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$374 | Average$721 | FlexibilityNo cancel fee | On-time67% |