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Cheap flights from Seattle to Montreal from C$ 186

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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YMQ
27 Feb — 6 Mar1
1 adult

The best prices from Seattle/Tacoma Intl to Montreal are usually found in May or January, booked 48 days in advance, depart on a Sunday or Friday and return on a Wednesday

Cheap flight deals from Seattle to Montreal

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Montreal (YMQ). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 22 February 2025.

Round-trip from

C$ 474

One-way from

C$ 186

Popular in

February

Cheapest in

May

Average price

C$ 988

Good one-way deal

C$ 201 or less
29/4-6/5
  • 29/4-6/5
  • 5 total stops
  • 60h 30m total
  • Seattle to Montreal
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6/5
  • 6/5
  • 2 total stops
  • 29h 23m total
  • Seattle to Montreal
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Highest demand for flights based on searches. 4% potential increase in price (C$ 53 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 16 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Montreal (YMQ).
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Find flight deals from Seattle to Montreal

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 22 February 2025.

Tue 8/411:35 p.m.SEA - YUL
1 stop12h 20mMultiple Airlines
Tue 15/41:30 p.m.YUL - SEA
3 stops25h 05mMultiple Airlines
Deal found 21/2C$ 453
Wed 28/51:50 p.m.SEA - YUL
1 stop7h 53mWestJet
Tue 3/67:00 a.m.YUL - SEA
1 stop8h 58mWestJet
Deal found 20/2C$ 491
Thu 24/46:25 p.m.SEA - YUL
1 stop15h 16mSun Country Air
Sun 27/411:00 a.m.YUL - SEA
1 stop9h 12mSun Country Air
Deal found 21/2C$ 636
Tue 1/47:10 a.m.SEA - YUL
2 stops13h 29mDelta
Tue 8/46:05 a.m.YUL - SEA
2 stops15h 34mDelta
Deal found 20/2C$ 663
Mon 7/46:00 a.m.SEA - YUL
1 stop9h 21mAir Canada
Mon 14/42:20 p.m.YUL - SEA
2 stops10h 43mAir Canada
Deal found 21/2C$ 735
Mon 7/41:35 p.m.SEA - YUL
1 stop19h 09mAmerican Airlines
Mon 14/412:30 p.m.YUL - SEA
1 stop13h 39mAmerican Airlines
Deal found 21/2C$ 768
Tue 1/411:45 p.m.SEA - YUL
1 stop16h 06mUnited Airlines
Fri 4/48:30 a.m.YUL - SEA
1 stop16h 13mUnited Airlines
Deal found 21/2C$ 857

Find flights from Seattle to Montreal within your budget

Customize your flight search to find flights from Seattle to Montreal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 22 February 2025.

Fly from

Seattle

Fly to

Montreal

Route

Depart

Return

Price

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 29/4

9:06 p.m.-12:43 a.m.

2 stops24h 37m

Montreal Pierre Elliott Trudeau Intl

Tue 6/5

7:00 a.m.-3:53 p.m.

3 stops35h 53m

C$ 474

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Wed 28/5

1:50 p.m.-12:43 a.m.

1 stop7h 53m

Montreal Pierre Elliott Trudeau Intl

Tue 3/6

7:00 a.m.-12:58 p.m.

1 stop8h 58m

C$ 491

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 24/4

6:25 p.m.-12:41 p.m.

1 stop15h 16m

Montreal Pierre Elliott Trudeau Intl

Sun 27/4

11:00 a.m.-5:12 p.m.

1 stop9h 12m

C$ 636

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Tue 1/4

7:10 a.m.-11:39 p.m.

2 stops13h 29m

Montreal Pierre Elliott Trudeau Intl

Tue 8/4

6:05 a.m.-6:39 p.m.

2 stops15h 34m

C$ 663

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 7/4

6:00 a.m.-6:21 p.m.

1 stop9h 21m

Montreal Pierre Elliott Trudeau Intl

Mon 14/4

4:15 p.m.-9:26 p.m.

1 stop8h 11m

C$ 735

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 7/4

1:35 p.m.-11:44 a.m.

1 stop19h 09m

Montreal Pierre Elliott Trudeau Intl

Mon 14/4

12:30 p.m.-11:09 p.m.

1 stop13h 39m

C$ 768

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 28/3

11:59 p.m.-9:17 p.m.

1 stop18h 18m

Montreal Pierre Elliott Trudeau Intl

Thu 3/4

1:10 p.m.-10:43 p.m.

1 stop12h 33m

C$ 815

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Thu 29/5

1:50 p.m.-12:43 a.m.

1 stop7h 53m

C$ 203

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Mon 28/4

9:45 p.m.-2:55 p.m.

1 stop14h 10m

C$ 234

SeattleMontreal

SEA - YUL

SEAYUL

Seattle/Tacoma Intl

Fri 28/3

5:55 a.m.-5:03 p.m.

1 stop8h 08m

C$ 351

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/2

Showing 1-10 of 13 results
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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.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Seattle to Montreal

Get recent, data-driven insights about flights from Seattle to Montreal including ideal travel times, pricing trends, and more.

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 14 February 2025.

Booking 48 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.

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

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 March is currently the most expensive (average of C$ 345). 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.

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 22 February 2025.

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 75% versus a flight in the morning.

Rainfall in Montreal by month

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

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.

Temperature in Montreal by month

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

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).

Reviews of airlines servicing Montreal

Get insights into the airlines that provide service to Montreal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Montreal. Reviews last updated 22 February 2025.
Delta
8.0
Very good
8,212 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,212 reviews
Delta
8.0
Very good
8,212 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,759 reviews
Delta
8.0
Very good
8,212 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,212 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

WestJet
7.2
Good
2,800 reviews
Delta
8.0
Very good
8,212 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air Canada
7.0
Good
8,756 reviews
Delta
8.0
Very good
8,212 reviews
Check prices

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Montreal. On average, Seattle/Tacoma Intl has 0 outbound flights to Montreal per day from 1 airline. Seattle/Tacoma Intl is conveniently located just 18.4 km from Seattle’s city centre.

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

    Cheapflights users have booked flights from Seattle to Montreal round-trip from C$ 491. Other airlines that can offer you cheap pricing are Sun Country Air, from C$ 636, and Delta, from C$ 663. WestJet is 43% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airlines for a one-way flight from Seattle to Montreal are WestJet (C$ 251), Air Canada (C$ 281), and American Airlines (C$ 352).

  • What are the cheapest flights from Seattle to Montreal?

    On average you can expect to pay C$ 422 for a flight from Seattle to Montreal. The cheapest flight overall is C$ 201 while the most popular route, (Seattle/Tacoma Intl - Montreal Pierre Elliott Trudeau Intl) is currently priced at C$ 453.

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

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

  • How can I find direct flights from Seattle to Montreal?

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

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

    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.

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

    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 March is currently the most expensive (average of C$ 345). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Seattle to Montreal

Discover the top airline that operate flights from Seattle to Montreal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 22 February 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 791AverageC$ 1,014FlexibilityNo cancel feeOn-time67%
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How does Cheapflights help users find flights from Seattle to Montreal?

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

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.

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

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.

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

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.

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