Cheap Flights from Seattle (SEA) to Montreal (YUL)

View AU$303 flight on Mon, 6 Oct. 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Trudeau International Airport (YUL)

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Cheap Flights from Seattle (SEA) to Montreal (YUL)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, 6 Oct. - Sat, 11 Oct.
SEA
Seattle
YUL
Montreal
AU$630 Return, found 4 days ago
AU$630
Return
found 4 days ago
Select Delta flight, departing Mon, 6 Oct. from Seattle to Montreal, returning Sat, 11 Oct., priced at AU$630 found 4 days ago
Air Canada
Mon, 6 Oct. - Sat, 11 Oct.
SEA
Seattle
YUL
Montreal
AU$640 Return, found 4 days ago
AU$640
Return
found 4 days ago
Select Air Canada flight, departing Mon, 6 Oct. from Seattle to Montreal, returning Sat, 11 Oct., priced at AU$640 found 4 days ago
United
Mon, 6 Oct. - Sat, 11 Oct.
SEA
Seattle
YUL
Montreal
AU$658 Return, found 4 days ago
AU$658
Return
found 4 days ago
Select United flight, departing Mon, 6 Oct. from Seattle to Montreal, returning Sat, 11 Oct., priced at AU$658 found 4 days ago
Air Canada
Mon, 6 Oct. - Sat, 11 Oct.
SEA
Seattle
YUL
Montreal
AU$660 Return, found 4 days ago
AU$660
Return
found 4 days ago
Select Air Canada flight, departing Mon, 6 Oct. from Seattle to Montreal, returning Sat, 11 Oct., priced at AU$660 found 4 days ago
Delta
Mon, 6 Oct. - Sat, 11 Oct.
SEA
Seattle
YUL
Montreal
AU$670 Return, found 4 days ago
AU$670
Return
found 4 days ago
Select Delta flight, departing Mon, 6 Oct. from Seattle to Montreal, returning Sat, 11 Oct., priced at AU$670 found 4 days ago
Delta
Mon, 6 Oct. - Sat, 11 Oct.
SEA
Seattle
YUL
Montreal
AU$674 Return, found 4 days ago
AU$674
Return
found 4 days ago
Select Delta flight, departing Mon, 6 Oct. from Seattle to Montreal, returning Sat, 11 Oct., priced at AU$674 found 4 days ago
Air Canada
Mon, 6 Oct. - Sat, 11 Oct.
SEA
Seattle
YUL
Montreal
AU$677 Return, found 4 days ago
AU$677
Return
found 4 days ago
Select Air Canada flight, departing Mon, 6 Oct. from Seattle to Montreal, returning Sat, 11 Oct., priced at AU$677 found 4 days ago
Delta
Mon, 6 Oct. - Sat, 11 Oct.
SEA
Seattle
YUL
Montreal
AU$683 Return, found 4 days ago
AU$683
Return
found 4 days ago
Select Delta flight, departing Mon, 6 Oct. from Seattle to Montreal, returning Sat, 11 Oct., priced at AU$683 found 4 days ago
American Airlines
Mon, 6 Oct. - Sat, 11 Oct.
SEA
Seattle
YUL
Montreal
AU$697 Return, found 4 days ago
AU$697
Return
found 4 days ago
Select American Airlines flight, departing Mon, 6 Oct. from Seattle to Montreal, returning Sat, 11 Oct., priced at AU$697 found 4 days ago
WestJet
Mon, 6 Oct. - Sat, 11 Oct.
SEA
Seattle
YUL
Montreal
AU$706 Return, found 4 days ago
AU$706
Return
found 4 days ago
Select WestJet flight, departing Mon, 6 Oct. from Seattle to Montreal, returning Sat, 11 Oct., priced at AU$706 found 4 days ago

Find the cheapest month to fly from Seattle (SEA) to Montreal (YUL)

June is typically the cheapest month to fly

From AU$505 - AU$900 per traveller.

Graph displaying average flight prices per month

Flight from Seattle to Montreal route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Pierre Elliott Trudeau Intl.
Return price
AU$630
Distance
3643 km
Average flight time
5 hours 9 mins

Your quick guide to flights from Seattle to Montreal

Pick up great flights from Seattle to Montreal

With Expedia, you have your pick of 2 flights a day with 20 airlines covering flights from Seattle to Montreal. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Seattle to Montreal that take around 11 hours.

Find cheap flights from Seattle to Montreal

From the great flight deals with prices currently ranging from AU$630 to AU$706, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Seattle to Montreal around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Montreal is normally in October.

Reasons to book your flight from Seattle to Montreal with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Seattle to Montreal across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Montreal right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Frequently asked questions

How much is a flight from Seattle - Tacoma Intl. Airport (SEA) to Montreal Airport?
Based on fares available within the last 7 days on Expedia for flights departing within the next year, round-trip journeys from Seattle - Tacoma Intl. Airport (SEA) to Montreal Airport start from AU$630. Make your booking ASAP to score the best price for your next big adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from SEA to Pierre Elliott Trudeau Intl. Airport (YUL)?
Most flights can be conveniently cancelled online, but whether you incur a fee varies between airlines. If you do have to cancel your escape, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from Seattle - Tacoma Intl. Airport (SEA) to Montréal–Trudeau that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for SEA to Montreal Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Sea-Tac Airport to Montréal–Trudeau?
It's around 3 700 kilometres between SEA and Montreal Airport, so expect to be flying for a while. Keep yourself occupied with things like a magazine or a thrilling novel.
Which airlines fly direct from Sea-Tac Airport to Pierre Elliott Trudeau Intl. Airport (YUL)?
A popular option with many travellers, Air Canada (AC) offers 17 flights every month from Seattle - Tacoma Intl. Airport (SEA) to Montréal–Trudeau. Pick the one that fits with your travel schedule and book your seat today.
Are SEA to Montreal Airport flight tickets cheaper when they're purchased at the last minute?
Fares from Seattle - Tacoma Intl. Airport (SEA) to Montréal–Trudeau are available up to 12 months prior to departure on Expedia. And although you may pick up a great last-minute deal, it's never something you can count on. Also, booking your flights well in advance means you'll have more choices — and you can avoid being wedged in the dreaded middle seat! We frequently update our fares to bring you the best bargains, so keep checking in for all the latest specials.

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