Cheap flights from Seattle to Montreal from $147
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Montreal departing on 10/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Air Canada flights from Seattle to Montreal
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WestJet flights from Seattle to Montreal
Our best WestJet deals on Seattle to Montreal flight tickets
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How to get the cheapest flight ticket from Seattle to Montreal
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Seattle and Montreal?
What is the cheapest month to fly to Montreal?
The cheapest month to fly to Montreal from Seattle is in May. Flight prices, which tend to average around $448, are often lower during this time because this is during the off-season. If you are unable to visit Montreal during the month of May, then departing from Seattle during the month September is also very affordable. Most momondo users find prices during this month for around $530.
What is the cheapest day to depart on your flight to Montreal?
The cheapest day to depart from Seattle to Montreal is on a Thursday when prices can be found for as low as $766. Flights from Seattle to Montreal on a Wednesday will generally be more expensive and average around $844. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.
What is the cheapest time of day to depart on your flight to Montreal?
Our most recent data shows that the best time of day to fly to Montreal is in the afternoon. Flights from Seattle to Montreal during this time can be as low as $305. In the morning is when there is more demand to fly to Montreal, so prices are often more expensive at around $798 per ticket.
What is the cheapest Seattle/Tacoma Intl to Montreal flight route?
Fly from Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl for the best Seattle/Tacoma Intl - Montreal flight prices
How far in advance should I book a flight to Montreal?
You are more likely to see cheaper flights to Montreal from Seattle when booking 13 weeks ahead of your departure date. In general, you can expect to find flights to Montreal for around $555 when searching 13 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montreal from Seattle for as low as $334 on momondo.
What cabin class options are available on Seattle/Tacoma Intl to Montreal flights?
There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Montreal flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Seattle to Montreal flights?
No. A direct flight is the cheapest option for a flight between Seattle to Montreal.
How have Seattle to Montreal flight prices changed over time?
As of June 2025, prices for Seattle to Montreal flights are approximately 30% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Montreal?
WestJet, American Airlines, and Sun Country Air are the most popular carriers operating from Seattle/Tacoma Intl to Montreal
What airlines fly to Montreal?
Air Canada, United Airlines and WestJet are the top three most popular airlines that fly to Montreal from Seattle according to our data. Air Canada is the first choice among our users, with 68% of people opting to fly with this airline when traveling to Montreal. Keep in mind that there are 5 different airlines that fly to Montreal on a routine basis, so you have a few additional options to choose from.
How many flights depart from Seattle to Montreal on average per day?
As of June 2025, there are 1 flights per day flying from Seattle to Montreal. The most common time of day flights depart is 7:00AM, with 100% of flights taking off at noon.
How many flights depart from Seattle to Montreal on average per week?
As of June 2025, there are 10 flights per week flying from Seattle to Montreal. The most common day of the week flights depart is Mon, with 20% of flights taking off on this day.
When to book flights from Seattle to Montreal
Cheap Seattle to Montreal (SEA to YMQ) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Seattle to Montreal
How far is Seattle/Tacoma Intl to Montreal by plane?
The straight-line distance from Seattle/Tacoma Intl to Montreal is 2282.0 mi. Typically, this will take 5h 09m by plane in normal conditions.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Montreal?
Prices for flights from Seattle/Tacoma Intl Airport to Montreal are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Montreal?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Montreal is 5 as of June 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Montreal?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Montreal.
What documentation or ID do you need to fly to Montreal?
The required travel and health documents for your Montreal trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Montreal. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Seattle to Montreal?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Seattle to Montreal is Airbus A220-300 (74.85% of total bookings). The next most popular plane models are Airbus A330-200 (3.22%), Boeing 777-300ER (2.92%), and Airbus A330-900neo (2.63%).
What is the most popular airline from Seattle to Montreal?
Based on momondo bookings for flights between Seattle and Montreal, the leading airline is Air Canada, making up 67% of the total bookings. Other popular airlines include United Airlines with 18%, WestJet with 8%, and Delta with 4%.
Best airlines flying from Seattle to Montreal
Compare and see reviews for airlines that fly from Seattle to Montreal with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $228 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $269 | Free Cancellation | Rating 7.1 9,531 reviews | |||
| PriceFrom $283 | Free Cancellation | Rating 7.2 2,868 reviews | |||
| PriceFrom $455 | Free Cancellation | Rating 8.0 7,950 reviews | |||
| PriceFrom $465 | Free Cancellation | Rating 7.2 10,000 reviews |
United Airlines Flights From Seattle to Montreal
Across 7 United Airlines flights from Seattle to Montreal this week, the average price was $615, with the best United Airlines deals starting from $228 round-trip. 8,790 users have rated United Airlines on momondo, with an average score of 7.4/10.
Air Canada Flights From Seattle to Montreal
The best Air Canada deal for Seattle to Montreal flight tickets found on momondo in the last 72 hours was $269, round-trip. It should be noted that an average Air Canada flight deal for this route in this time was higher, at $609 round-trip. Air Canada operates 7 flights out of Seattle into Montreal in an average week, so prices vary by time and availability. 9,537 Air Canada reviews by users on momondo have scored the airline at 7.1/10.
Why use momondo?
Why should I use momondo to find a flight deal from Seattle to Montreal?
Finding the right flight to Montreal from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Montreal quick and easy, saving you time and money.
Can I find flights from Seattle to Montreal with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Seattle to Montreal flights to just show those with flexible booking policies.
How can momondo help me find flights from Seattle to Montreal?
momondo provides multiple filters to help you find the best flight to Montreal from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Seattle to Montreal right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Seattle to Montreal flights. All you need is a valid email address and we will do the rest; it is that quick and easy.