C$160 Cheap Flights from Seattle / Tacoma International (SEA) to Montreal (YMQA)

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Flight deals from Seattle / Tacoma International to Montreal

Looking for a cheap last-minute deal or the best return flight from Seattle / Tacoma International Airport to Montreal? If you want to travel next month, return fares start from C$553. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Seattle \u002F Tacoma International to Montreal from C$160 one-way

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle / Tacoma International to Montreal flights are currently cheapest in July.

Which airlines fly from Seattle / Tacoma International to Montreal?

Alternative Seattle / Tacoma International to Montreal routes

Looking for the cheapest, fastest or easiest route from Seattle / Tacoma International to Montreal? You could fly into the following airports instead.

Seattle to Montreal: Flight information

The things to know before you go.
Cheapest flight foundC$160
Cheapest month to flyJuly
Average flight time5 hrs, 22 mins
Most popular airlineAir Canada
Average flights per week28

Finding cheap flights from Seattle / Tacoma International to Montreal: Frequently asked questions

There are 3 airports in Montreal: Montreal St Hubert, Montreal Pierre Elliott Trudeau and Montreal Mirabel.
The best price we found for a return flight from Seattle / Tacoma International to Montreal is C$447. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
5 hours and 22 minutes is the average flight time from Seattle / Tacoma International to Montreal.
Air Canada and United fly direct from Seattle / Tacoma International to Montreal.
As of May 2026, there are 14 flights per week flying from Seattle / Tacoma International to Montreal.
The cheapest month to fly from Seattle / Tacoma International to Montreal is usually August.
If you're flying from Seattle / Tacoma International Airport, the cheapest airport near Montreal is Montreal Pierre Elliott Trudeau – which is 16.1 km away from the centre of Montreal. We've found flights into this airport from C$447.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Seattle / Tacoma International Airport to Montreal on Monday, August 10, 2026.
Yes – the average flight time is 5 hours and 22 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Montreal but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Montreal is around 40 days in advance, so don’t leave your flight to the last minute.
In May, the average temperature is usually around 12°C. July is typically the warmest month in Montreal, when it usually averages around 25°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging -17°C. The rainiest month is June.
Currently, WestJet offers the cheapest flight tickets to Montreal.

Flying from Seattle-Tacoma International Airport (SEA) to Montreal: what you need to know

  • Expect to be travelling for 5 hours 52 minutes. That's the average time for a direct flight from Seattle-Tacoma International Airport to Montreal.

  • Seattle-Tacoma International Airport is located in Seattle. Operating on the UTC-4 timezone, Montreal is 3 hours ahead of Seattle.

  • Seattle-Tacoma International Airport (SEA) to Montreal-Pierre Elliott Trudeau International Airport (YUL) is the most popular route, with 8 departures a week to pick from. If you have things to finalize before heading off, the last flight from SEA to YUL is with Air Canada at 09:45. Opt for the first departure with Air Canada at 07:40 if you want to fly out earlier.

  • For stress-free travel, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This will give you plenty of time to board your flight from SEA to Montreal.

  • Peak months like July or vacation periods such as summer and spring break will mean longer lines at check-in and security. Travelling then? Play it safe and get to the terminal even earlier. Arriving two hours before domestic flights and up four hours ahead of international flights is a smart idea.

  • You can book a nonstop flight from Seattle-Tacoma International Airport to Montreal that touches down at Montreal-Pierre Elliott Trudeau International Airport (YUL).

  • Air Canada is a leading airline that offers direct flights from Seattle-Tacoma International Airport to Montreal.

  • Think about adding a stopover to possibly find a cheaper flight from SEA to Montreal. Simply uncheck 'Direct flights only' when browsing the departures. Break up your trip (and maybe save some cash) by stopping at one of these airports:

    • Vancouver International Airport (YVR)

    • Calgary International Airport (YYC)

    • Minneapolis-St. Paul International Airport (MSP)

  • You can enter Canada for tourism purposes without a visa if you hold a passport from United States. But before reserving your flight tickets from Seattle-Tacoma International Airport to Montreal, double-check for the newest rules and regulations. Visa rules are subject to change, and you may need some documentation if your trip is for business or other reasons.

  • Travelling from central Seattle to SEA takes approximately 54 minutes on public transport. If you drive, ride-share or grab a cab, you'll cover the 23 kilometres in 18 minutes or so, depending on traffic conditions.

  • Have an early flight from Seattle-Tacoma International Airport to Montreal? Avoid rushing to the terminal (and sneak in some extra snooze time) by choosing one of these hotels near SEA:

How to find the cheapest flights from Seattle-Tacoma International Airport (SEA) to Montreal

  • The best price we've found for a one-way ticket from Seattle-Tacoma International Airport to Montreal is C$160. The cheapest price for a return flight is C$447. Remember fares can change due to availability at the time of booking.

  • To score cheap tickets from SEA to Montreal, reserve your journey 9 months ahead of your departure.

  • The cheapest month for tickets from Seattle-Tacoma International Airport to Montreal is May. Compare prices using the 'Whole month' tool and choose the date that offers the lowest fare.

  • Create a Price Alert for cheap tickets from SEA to Montreal. There's no need to check every day to see if prices have fallen. We'll tell you as soon as there's a change in price.

  • Use the filters to tailor your flights from Seattle-Tacoma International Airport to Montreal. Simply enter your ideal arrival and departure times, number of stops and airlines. Alternatively, sort your results by 'Cheapest' to find the best deals.

Airports in Montreal

Montreal-Pierre Elliott Trudeau International Airport (YUL)

St. Hubert Airport (YHU)

Best time to go to Montreal

  • It's time to plan your trip dates for your flight from Seattle-Tacoma International Airport to Montreal. August is the busiest month to travel to Montreal. If you want a more relaxed atmosphere, go in February.

  • The warmest month in Montreal is July, with the temperature ranging between 14ºC and 28ºC. Book your flights from Seattle-Tacoma International Airport to Montreal in this month if you enjoy this type of weather.

  • If you want to travel in cooler conditions, lock in a cheap flight from SEA to Montreal in January when temperatures average between -19ºC and -2ºC.

More about Montreal

  • Once you've booked your flight from Seattle-Tacoma International Airport to Montreal, think about where you'd like to stay in this city. Make one of these options your base for exploring Montreal:

  • All great vacations should include some sightseeing. Mount Royal Park, Montreal Botanical Garden and Saint Joseph's Oratory of Mount Royal are attractions you won't want to skip in Montreal.

Complete your Montreal trip with a car rental

  • We use the same magic that helped you find your cheap flight from Seattle-Tacoma International Airport to Montreal to track down amazing deals on car rentals. Search for your ride in seconds and easily compare your options. Plus we give you all the info on car rentals in Montreal, from the most popular rental company to the average daily price.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.