Question 1

What are the cheapest airlines flying from Montreal to Seattle round-trip?

Accepted Answer

Air Canada, at C$ 492, was found to be the cheapest airline from Montreal to Seattle.Alternate airlines to your destination round-trip include WestJet and United Airlines. Air Canada is 33% cheaper than the average price of flights available within the next 90 days to this destination.

Question 2

What are the cheapest airlines to fly from Montreal to Seattle one-way?

Accepted Answer

The cheapest airlines for a one-way flight from Montreal to Seattle are WestJet (C$ 252), Air Canada (C$ 288), and United Airlines (C$ 308).

Question 3

How far ahead should I book a flight from Montreal to Seattle?

Accepted Answer

Booking 30 days in advance of your planned departure date is, on average, the best time to get cheap flights from Montreal to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Question 4

What is the cheapest month to book a flight from Montreal to Seattle?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from Montreal to Seattle (average of C$ 261). Flying from Montreal to Seattle in December is currently the most expensive (average of C$ 353). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 5

What is the cheapest day to fly from Montreal to Seattle?

Accepted Answer

Travelers seeking maximum savings on their Montreal to Seattle flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Question 6

Weekly flight availability from Montreal to Seattle

Accepted Answer

The most flights from YMQ to SEA are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

Question 7

E

Accepted Answer

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 mm per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Question 8

E

Accepted Answer

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Question 9

What are the cheapest flights from Montreal to Seattle?

Accepted Answer

While on average a flight from Montreal to Seattle is generally C$ 568, our data shows the cheapest flight currently is C$ 303. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - Seattle/Tacoma Intl), you can expect to pay C$ 498 for that flight.

Question 10

What are the most popular airlines that fly from Montreal to Seattle?

Accepted Answer

Consider American Airlines, Air Canada or Delta when booking your flight. These represent the most popular airlines when flying from Montreal to Seattle.

Question 11

What is the cheapest day to fly round-trip from Montreal to Seattle?

Accepted Answer

Departing on a Thursday is a good option for securing a great price. You can expect to save up to 27% when planning your travel around this day of the week.

Question 12

How far in advance should I book a flight from Montreal to Seattle?

Accepted Answer

To save on the cost of your flight from Montreal to Seattle, book at least 31 days before your planned departure. Booking around this time can save you about 141% on the cost of this flight compared to booking a flight leaving this week. We have found prices from C$ 492 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 919.

Question 13

What is the cheapest month to fly from Montreal to Seattle?

Accepted Answer

August is one of the best times of the year to fly to Seattle from Montreal. Prices for August average C$ 736 per person but you can even find prices for as low as C$ 346. The most expensive prices can be found in the month of December. Opting for a August flight can save you 17% on your journey compared to booking in December

Question 14

What is the cheapest time of day to fly from YMQ to SEA?

Accepted Answer

A simple way to save on the total cost of your ticket is to fly from Montreal to Seattle in the evening. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight at noon.

Question 15

What airport do you fly into for flights to Seattle from Montreal?

Accepted Answer

Located just 18.4 km from the city centre, Seattle/Tacoma Intl is the airport most travellers will use when flying to Seattle from Montreal. Booking flights from Montreal to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 2 daily inbound flights from Montreal from 5 different airlines.

Question 16

Can I find deals for flights from Montreal to Seattle that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Montreal to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

Question 17

How can I find direct flights from Montreal to Seattle?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montreal to Seattle.

Question 18

Can I find deals for business class flights from Montreal to Seattle?

Accepted Answer

Yes. Cheapflights offers flight deals from Montreal to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 19

How does Cheapflights help users find flights from Montreal to Seattle?

Accepted Answer

Cheapflights helps you search for flights from Montreal to Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Question 20

Why should you use Cheapflights to find cheap flight tickets from Montreal to Seattle?

Accepted Answer

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Montreal to Seattle.

Question 21

Can Cheapflights find flights from Montreal to Seattle with no change fees?

Accepted Answer

Need flexible booking options for your flight to Seattle from Montreal? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Question 22

Can Cheapflights notify me if prices for flights from Montreal to Seattle become cheaper?

Accepted Answer

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

Round-trip from	C$ 492
One-way from	C$ 252
Popular in	December
Cheapest in	August
Average price	C$ 786
Good round-trip deal	C$ 606 or less
Good one-way deal	C$ 339 or less

Airline	Cheapest	Average	Flexibility	On-time
WestJet	CheapestC$ 357	AverageC$ 551	FlexibilityNo cancel fee	On-time60%	Search WestJet flights
Delta	CheapestC$ 492	AverageC$ 621	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
Air Canada	CheapestC$ 503	AverageC$ 708	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
American Airlines	CheapestC$ 524	AverageC$ 691	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
United Airlines	CheapestC$ 529	AverageC$ 722	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Cheap flights from Montreal to Seattle from C$ 237

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Montreal to Seattle/Tacoma Intl are usually found in August or October, booked 30 days in advance, depart on a Friday or Saturday and return on a Wednesday

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Cheapest flights from Montreal to SeattleExplore the most affordable flight options available from Montreal to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.

Explore the most affordable flight options available from Montreal to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Montreal to Seattle that are best for you.

Best time to book a flight from Montreal to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Montreal with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Montreal to Seattle

How far ahead should I book a flight from Montreal to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Montreal to Seattle. Price data was last updated on 9 June 2025.

What is the cheapest month to book a flight from Montreal to Seattle?

What is the cheapest time of day to fly from YMQ to SEA?

Find hourly flight availability from Montreal to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 June 2025.

Weekly flight availability from Montreal to Seattle

Explore weekly flight availability from Montreal to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 12 June 2025.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

Reviews of airlines servicing Seattle

See what other customers who have flown with Delta, United Airlines and American Airlines from Montreal to Seattle have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Montreal to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Seattle from Montreal?

What are the cheapest airlines flying from Montreal to Seattle round-trip?

What are the cheapest airlines to fly from Montreal to Seattle one-way?

What are the cheapest flights from Montreal to Seattle?

Can I find deals for flights from Montreal to Seattle that include hotel bookings?

How can I find direct flights from Montreal to Seattle?

Can I find deals for business class flights from Montreal to Seattle?

What is the cheapest month to book a flight from Montreal to Seattle?

Travelling to a place near Montreal?

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Alternative routes for Montreal to Seattle

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Top 5 airlines flying from Montreal to Seattle

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How does Cheapflights help users find flights from Montreal to Seattle?

Why should you use Cheapflights to find cheap flight tickets from Montreal to Seattle?

Can Cheapflights find flights from Montreal to Seattle with no change fees?

Can Cheapflights notify me if prices for flights from Montreal to Seattle become cheaper?

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Cheapest flights from Montreal to Seattle
Explore the most affordable flight options available from Montreal to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.