Cheap Flights from Montreal (YMQA) to Seattle (SEAA)

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Flight deals from Montreal to Seattle

Looking for a cheap last-minute deal or the best return flight from Montreal to Seattle? If you want to travel next month, return fares start from £242. Find the lowest prices on one-way and return tickets right here.

Seattle.£143 per passenger.Departing Tue, 20 Oct.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Montreal Pierre Elliott Trudeau on Tue, 20 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £143, select.

Seattle.£148 per passenger.Departing Wed, 2 Sep.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from Montreal Pierre Elliott Trudeau on Wed, 2 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £148, select.

Seattle.£150 per passenger.Departing Tue, 17 Nov.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from Montreal Pierre Elliott Trudeau on Tue, 17 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £150, select.

Seattle.£153 per passenger.Departing Tue, 19 Jan.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from Montreal Pierre Elliott Trudeau on Tue, 19 Jan, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £153, select.

Seattle.£154 per passenger.Departing Wed, 14 Apr.One-way flight with Delta.Outbound indirect flight with Delta, departs from Montreal Pierre Elliott Trudeau on Wed, 14 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £154, select.

Seattle.£154 per passenger.Departing Wed, 12 Aug.One-way flight with Delta.Outbound indirect flight with Delta, departs from Montreal Pierre Elliott Trudeau on Wed, 12 Aug, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £154, select.

Seattle.£155 per passenger.Departing Sat, 26 Jun.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from Montreal Pierre Elliott Trudeau on Sat, 26 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £155, select.

Seattle.£155 per passenger.Departing Sat, 8 May.One-way flight with Air Canada.Outbound direct flight with Air Canada departs from Montreal Pierre Elliott Trudeau on Sat, 8 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £155, select.

Seattle.£158 per passenger.Departing Thu, 3 Dec.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Montreal Pierre Elliott Trudeau on Thu, 3 Dec, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £158, select.

Seattle.£164 per passenger.Departing Mon, 8 Mar.One-way flight with Delta.Outbound indirect flight with Delta, departs from Montreal Pierre Elliott Trudeau on Mon, 8 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £164, select.

Seattle.£200 per passenger.Departing Sat, 26 Jun.One-way flight with Air Canada.Outbound direct flight with Air Canada departs from Montreal Pierre Elliott Trudeau on Sat, 26 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £200, select.

Find the cheapest month to fly from Montreal to Seattle

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

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Direct flights from Montreal to Seattle

Alternative Montreal to Seattle routes

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

Montreal to Seattle: Flight information

The things to know before you go.

Cheapest flight found	£143
Cheapest month to fly	October
Average flight time	5 hrs, 54 mins
Most popular airline	Air Canada
Average flights per week	15

Finding cheap flights from Montreal to Seattle: Frequently asked questions

How many airports are there in Seattle?

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.

How much are return flights from Montreal to Seattle?

The best price we found for a return flight from Montreal to Seattle is £223. 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.

How long does it take to fly from Montreal to Seattle?

5 hours and 54 minutes is the average flight time from Montreal to Seattle.

Which airlines fly direct from Montreal to Seattle?

Air Canada and United fly direct from Montreal to Seattle.

How many flights are there a week from Montreal to Seattle?

As of August 2026, there are 15 flights per week flying from Montreal to Seattle.

When is the cheapest time to fly from Montreal to Seattle?

The cheapest month to fly from Montreal to Seattle is usually March.

Which is the cheapest airport to fly into in Seattle?

If you're flying from Montreal, the cheapest airport near Seattle is Seattle / Tacoma International – which is 12.1 miles away from the centre of Seattle. We've found flights into this airport from £223.

Which upcoming date is cheapest to fly from Montreal to Seattle on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Montreal to Seattle on Tuesday, 30 March 2027.

Can I get a direct flight from Montreal to Seattle?

Yes – the average flight time is 5 hours and 54 minutes.

How can I get the best flight deal from Montreal to Seattle?

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 Seattle 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.

When is the best time to book flights to Seattle?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.

What’s the weather like in Seattle?

In August, the average temperature is usually around 18°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.

Which is the cheapest airline to fly from Montreal to Seattle with?

The cheapest airline that flies to Seattle is Delta. And the cheapest airline that flies to Seattle Boeing Fld Airport is Air Canada.

Flying from Montreal to Seattle: what you need to know

Montreal Pierre Elliott Trudeau Airport (YUL) is Montreal's main airport. Explore your options for reserving a flight from Montreal to Seattle jetting off from here.
Seattle / Tacoma International Airport (SEA) and Seattle Lake Union SPB Airport (LKE) are Seattle's chief entry points.
Around 5 hours 55 minutes is how long you'll be travelling on a direct Montreal to Seattle flight.
Seattle is three hours behind Montreal and follows the UTC-8 timezone.
Montreal Pierre Elliott Trudeau Airport (YUL) to Seattle / Tacoma International Airport (SEA) is the most popular route between these two cities. There are three weekly flights to pick from. If you have things to finalize before heading off, the last flight from Montreal to Seattle is with Air Canada at 17:45. Choose the first YUL to SEA departure operated by Air Canada at 16:45 to maximise your time in Seattle.
Allow plenty of time to get on your Montreal to Seattle flight. As a general rule, arrive two hours before international departures and an hour ahead for domestic flights.
You'll likely experience longer queues in popular months like July. Arriving up to four hours ahead of international flights and two hours for a domestic departure is a wise move.

How to find the cheapest flights from Montreal to Seattle

£143 is the best price for a one-way ticket from Montreal to Seattle. Return flights start at £223. These prices can change based on demand.
Book one month before flying. Pricing trends suggest that this is the ideal window for finding cheap Montreal to Seattle flights.
June is the best month for landing an awesome deal on a plane ticket from Montreal to Seattle. If you want to travel at a different time of year, the 'Whole month' tool will show you the lowest prices for every month.
Stay on top of deals for cheap flights from Montreal to Seattle by setting up a Price Alert. We'll send you an email or push notification on the app when a lower fare pops up.
Choose your preferred departure and arrival times, airlines and number of stops with the filters. Or sort your Montreal to Seattle flight results by 'Cheapest,' 'Best' or 'Fastest.'

Flying from Montreal

Montreal Pierre Elliott Trudeau Airport (YUL)

You can catch a direct flight from Montreal to Seattle leaving from Montreal Pierre Elliott Trudeau Airport (YUL). Begin your trip at YUL and come in for landing at Seattle / Tacoma International Airport (SEA).
Look out for promotions with Air Canada. This airline offers direct Montreal to Seattle plane tickets out of YUL.
Located around 16 kms (10 miles) from the centre of Montreal, YUL can be reached in about 25 minutes by car, depending on traffic. The journey by public transport takes roughly 45 minutes.
Planning to catch an early flight from Montreal to Seattle? Avoid the last-minute rush to the airport (and sneak in some extra snooze time) by choosing one of these hotels near Montreal Pierre Elliott Trudeau Airport:
When it comes to the on-time performance of Montreal Pierre Elliott Trudeau Airport, data shows 67% of flights arrive within the expected time frame.
YUL is located at 975 Romeo Vachon Street North.

Arriving in Seattle

Seattle / Tacoma International Airport (SEA)

The distance from Seattle / Tacoma International Airport (SEA) to central Seattle is approximately 19 kms (12 miles). It takes around 25 minutes to reach the centre driving.
Travelling to the centre on public transport will take you roughly 35 minutes.
The last thing you want is a long journey to your hotel if you're getting in late on a flight from Montreal to Seattle. Check in to one of these accommodation options near SEA instead:
Grab a Seattle / Tacoma International Airport rental car and discover Seattle and beyond with your own set of wheels. Thrifty, Europcar and Budget are popular providers to choose from here.
For the best deal, reserve your ride from Seattle / Tacoma International Airport around one week in advance of your Montreal to Seattle flight.

Paine Field Airport (PAE)

Central Seattle is about 32 kms (20 miles) from Paine Field Airport (PAE). After your flight from Montreal to Seattle has hit the runway and you've made your way to arrivals, expect a drive of around 20 minutes.
If you're catching public transport, it'll take approximately 40 minutes.
Hang up the 'Do not disturb' sign and relax at a hotel close to PAE. Here are a few options where you can kick back after your flight from Montreal to Seattle:
Land, grab your Paine Field Airport rental car, and drive away without missing a beat. Budget and Enterprise are well-known providers you can book with here.
Avoid filling out forms at the rental desk by having everything prearranged. Secure your ride from PAE ahead of time so you can simply grab the keys and be on your way.

Seattle Boeing Fld Airport (BFI)

Seattle Boeing Fld Airport (BFI) is about 11 kms (7 miles) from the centre of Seattle. It'll take you about 20 minutes to reach the city centre by ride-share or taxi after your flight from Montreal to Seattle.
Public transport can get you there in about 35 minutes.
Begin your trip without stressing about how to get to your next stop with a Seattle Boeing Fld Airport rental car. You can book a set of wheels from trusted names here like Alamo, Budget and Avis.
Booking at least a few weeks ahead of your flight from Montreal to Seattle is a smart move. Along with better deals, you might find it easier to get the make and model you prefer at BFI.

Best time to go to Seattle

March is the quietest month for flights from Montreal to Seattle, while July is the busiest. Pick the best time to go to Seattle based on whether you prefer a bustling atmosphere or a more laid-back vibe.
Before locking in your Montreal to Seattle tickets, think about what kind of weather you prefer. August is the warmest month in Seattle, with temperatures ranging from 12ºC to 28ºC.
For cooler conditions, search for a cheap flight from Montreal to Seattle in February when temperatures average between -1ºC and 11ºC.

More about Seattle

When it comes to searching for somewhere to lay your head, you'll find the most popular stays in Seattle right here. Browse these hotels as soon as you've locked in your flight from Montreal to Seattle:
There are so many things to explore in this city it can be tricky to know where to start. Space Needle, Pike Place Fish Market and The Museum of Flight are leading attractions which should be on every Seattle itinerary.

Explore more of the United States

You've seen Seattle, now it's time to discover more of the United States. Travel around 241 kms (150 miles) south to Portland to tick off its must-visit sights. From Portland Japanese Garden to Peninsula Park Rose Garden and International Rose Test Garden, there's plenty to keep you on the go.
Around 370 kms (230 miles) east of Seattle, Spokane is another favourite stop in the United States. Start your sightseeing at Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes.