Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from Montreal to Seattle
The cheapest flights right now
Montreal – Seattle
Outbound – Nov 13, 2026
1 stop
8h 52m YVR
Return – Nov 22, 2026
1 stop
7h 20m YVR
$500
2 days ago
Montreal – Seattle
Outbound – Nov 13, 2026
1 stop
8h 52m YVR
Return – Nov 22, 2026
1 stop
7h 55m YVR
$515
2 days ago
Montreal – Seattle
Outbound – Nov 13, 2026
1 stop
8h 52m YVR
Return – Nov 22, 2026
1 stop
8h 15m YYZ
$508
2 days ago
* Prices are in USD per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that availability and ticket prices are subject to change and should not be considered as the final price quoted.
Cheapest flight tickets
$331
Average price of a round trip
$342
Average flight ticket price recorded over the last 3 months for a round trip.
Flight duration
11h29
A flight from Montreal to Seattle takes on average 11h29.
Best time
January
According to user searches, the ideal month to go to Seattle is January.
Tips for finding a cheap flight from Montreal to Seattle
Check out our tips for booking your flight to Seattle (USA) from Montreal (Canada) at the cheapest possible price.
Usually, the cheapest month to pick up a ticket on this route is August, with an average flight ticket price of $237 (calculation over the last two years). The most touristic season corresponds to the months of August, September and June.
For the cheapest flights, it is advisable to buy your ticket at least 40 days before the departure date.
The airline offering the cheapest flight tickets is Air Canada. A ticket from the airline Air Canada to Seattle costs on average $338.
The airlines that offer the most flights are .
info departure city :
Montreal, Canada
airports :
Mirabel International Airport (YMX)
Montreal-Trudeau International Airport (YUL)
Saint-Hubert Airport (YHU)
local time :
Montreal is a city in the country Canada, the time zone is [[timezone]]. In Montreal, it is currently {fromLocalTime}, the temperature is on average 9°C, with a minimum of 6°C and a maximum of 12°C.
The city of Montreal (YMQ) has 3 airport(s): Mirabel, Montreal-Trudeau and Saint-Hubert
destination info :
Seattle, USA
airports :
Kenmore Air Harbor Spb. (LKE)
Seattle-Tacoma International Airport (SEA)
Renton Municipal Airport (RNT)
King County International Airport (BFI)
local time :
Seattle is in the country USA, the time zone is [[timezone]]. In Seattle, it is currently {toLocalTime}, the temperature is on average 15°C, with a minimum of 10°C and a maximum of 23°C.
The city of Seattle (SEA) has 4 airport(s): Kenmore Air Harbor Spb., Seattle-Tacoma, Renton and King County
Useful info about Seattle
What is the least touristic period to go to Seattle?
If you want to visit Seattle during the least touristic period, choose the month of January.
What is the most popular time to travel to Seattle?
In Seattle, the most popular month is August. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight from Montreal to Seattle?
According to our data, it is recommended to book your flight 40 days before your departure. If you book your flight ticket 6 weeks before your departure, you may find a price below average. You can also choose morning flights that are 100% cheaper than afternoon and evening flights. The cheapest day to book a flight from Montreal to Seattle is Sunday.
What are the arrival and destination airports when traveling between Montreal and Seattle?
When you leave, you can leave from Montreal-Trudeau, and you will arrive at Seattle-Tacoma.
How to reach Montreal airport from the city centre?
The airport Mirabel is located 48 km, Montreal-Trudeau is located 18 km or Saint-Hubert is located 14 km from the city centre. You can access it by using public transportation, taking a taxi, or renting a car.
Are there other means of transportation to go from Montreal to Seattle?
Airplane is the only means of transportation listed on Liligo for this journey.
Are there big differences in weather between Montreal and Seattle?
In summer, the average temperature is 18°C in Seattle and 20°C in Montreal. The average rainfall in summer is 38 mm in Seattle and 130 mm in Montreal. In summer, it is warmer in Montreal and it rains less in Seattle. In winter, it is colder in Seattle and it rains more in Seattle.
