Q: How much does it cost to fly round-trip from Seattle to Montreal?

Airfare is below average for this route at the moment. Seattle to Montreal flights typically cost between C$ 552 and C$ 1,115 in September. The cheapest round-trip price found within the last 3 days was C$ 512 on Multiple Airlines (3 Sep-7 Oct).

Question 1

How much does it cost to fly round-trip from Seattle to Montreal?

Accepted Answer

Airfare is below average for this route at the moment.Seattle to Montreal flights typically cost between C$ 552 and C$ 1,115 in September.
The cheapest round-trip price found within the last 3 days was C$ 512 on Multiple Airlines (3 Sep-7 Oct).

Question 2

What’s the top layover airport for flights from Seattle to Montreal?

Accepted Answer

Calgary (YYC) – chosen by Cheapflights users on 50% of one-stop itineraries from Seattle to Montreal on Cheapflights.

Question 3

What’s the fastest layover option from Seattle to Montreal?

Accepted Answer

Flights via Calgary (YYC) have the shortest average one-way travel time for 1-stop routes: 7h 36m.

Question 4

What’s the cheapest layover airport for flights from Seattle to Montreal?

Accepted Answer

Calgary (YYC) is the most affordable 1-stop option, with an average round-trip price of C$ 626.

Question 5

Which airport typically offers the quickest layover for flights from Seattle to Montreal?

Accepted Answer

Flights via San Francisco (SFO) offer the fastest connection on this route, with an average layover time of 1h 06m.

Question 6

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

Accepted Answer

Cheapflights users have booked flights from Seattle to Montreal round-trip from C$ 513. Other airlines that can offer you cheap pricing are WestJet, from C$ 516, and American Airlines, from C$ 517. Air Canada is 38% cheaper than the average price of flights available within the next 90 days to this destination.

Question 7

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

Accepted Answer

The cheapest airlines for a one-way flight from Seattle to Montreal are WestJet (C$ 208), Air Canada (C$ 228), and Delta (C$ 241).

Question 8

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

Accepted Answer

Booking 9 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Montreal. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Question 9

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

Accepted Answer

Currently, October is the cheapest month in which you can book a flight from Seattle to Montreal (average of C$ 241). Flying from Seattle to Montreal in April is currently the most expensive (average of C$ 316). 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 10

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

Accepted Answer

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

Question 11

Weekly flight availability from Seattle to Montreal

Accepted Answer

The most flights from SEA to YMQ 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 12

E

Accepted Answer

In terms of precipitation, rainfall in Montreal ranges from 64.0 - 111.0 mm per month. August is typically the wettest month, when rainfall can reach 111.0 mm. February is typically the driest time to visit Montreal when rainfall is around 64.0 mm.

Question 13

E

Accepted Answer

If weather is an important factor for your trip to Montreal, 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 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -9.0 C).

Question 14

What are the cheapest flights from Seattle to Montreal?

Accepted Answer

On average you can expect to pay C$ 540 for a flight from Seattle to Montreal. The cheapest flight overall is C$ 237 while the most popular route, (Seattle/Tacoma Intl - Montreal Pierre Elliott Trudeau Intl) is currently priced at C$ 527.

Question 15

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

Accepted Answer

Flying to your destination on a Friday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Montreal. Check prices with Cheapflights to find a great deal for your trip.

Question 16

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

Accepted Answer

Travellers have found it’s best to book a flight 10 days in advance to save up to 119% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 10 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Seattle to Montreal 1-2 weeks in advance for as low as C$ 353, or C$ 1,155 for flights within the next 24 hours.

Question 17

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

Accepted Answer

The best pricing can be found in the month of May. Prices to Montreal from Seattle average C$ 835. You can even find prices in May for less than C$ 835, as users have found deals to Montreal from as low as C$ 330. The month of February appears to be one of the more expensive times to travel to Montreal from Seattle. Flying in the targeted month can save you up to 30%.

Question 18

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

Accepted Answer

When flying from Seattle to Montreal, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 70% versus a flight in the morning.

Question 19

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

Accepted Answer

Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Montreal. On average, Seattle/Tacoma Intl has 2 outbound flights to Montreal per day from 0 airlines. Seattle/Tacoma Intl is conveniently located just 18.4 km from Seattle’s city centre.

Question 20

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

Accepted Answer

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

Question 21

How can I find direct flights from Seattle to Montreal?

Accepted Answer

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

Question 22

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

Accepted Answer

Yes. Cheapflights offers flight deals from Seattle to Montreal 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 23

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

Accepted Answer

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Seattle to Montreal. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Question 24

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

Accepted Answer

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Montreal from Seattle.

Question 25

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

Accepted Answer

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

Question 26

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

Accepted Answer

Of course! You can now track prices for flights from Seattle to Montreal and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

Round-trip from	C$ 512
One-way from	C$ 189
Popular in	February
Cheapest in	May
Average price	C$ 746
Good round-trip deal	C$ 843 or less
Good one-way deal	C$ 237 or less

Cheap flights from Seattle to Montreal from C$ 189

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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Montreal are usually found in May or June, booked 9 days in advance, depart on a Thursday or Wednesday and return on a Friday

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Find flight deals from Seattle to Montreal

Cheapest flights from Seattle to MontrealExplore the most affordable flight options available from Seattle to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 July 2025.

Explore the most affordable flight options available from Seattle to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 July 2025.

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Best time to book a flight from Seattle to Montreal

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

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

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Montreal. Price data was last updated on 25 July 2025.

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

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

Find hourly flight availability from Seattle to Montreal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 31 July 2025.

Weekly flight availability from Seattle to Montreal

Explore weekly flight availability from Seattle to Montreal. 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 31 July 2025.

How much does it cost to fly round-trip from Seattle to Montreal?

What’s the top layover airport for flights from Seattle to Montreal?

Share of one-stop round-trip flights from Seattle to Montreal chosen by Cheapflights users in the past 12 months, using the same layover each way.

What’s the cheapest layover airport for flights from Seattle to Montreal?

Average round-trip fare for 1-stop flights from Seattle to Montreal, chosen by Cheapflights users in the past 12 months, with the same layover each way.

What’s the fastest layover option from Seattle to Montreal?

Shortest average travel time for 1-stop one-way flights from Seattle to Montreal, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Which airport typically offers the quickest layover for flights from Seattle to Montreal?

Average layover duration for 1-stop one-way flights from Seattle to Montreal, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Montreal

See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from Seattle to Montreal have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Montreal. 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 from for flights from Seattle to Montreal?

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

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

What are the cheapest flights from Seattle to Montreal?

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

How can I find direct flights from Seattle to Montreal?

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

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

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

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

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

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Cheapest flights from Seattle to Montreal
Explore the most affordable flight options available from Seattle to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 July 2025.