SEA - YUL

C$ 316 Find Cheap Flights from Seattle to Montreal – Compare and Save

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Everything you should know

Cheapest round-trip
C$ 666
Typical prices: C$ 792-C$ 1,151
Air Canada
Sun 18/2Thu 22/2
SEA - YUL • 2 stops
Cheapest one-way flights
C$ 316
Typical prices: C$ 299-C$ 552
Multiple Airlines
Sun 9/12
SEA - YUL • 2 stops
Direct flights
Not available
There are currently no direct flights between Seattle and Montreal Pierre Elliott Trudeau Intl Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
23 weeks
in advance
Our data shows that travellers who book at least 23 weeks in advance save around 54% compared to booking last minute.
Insights
Insights
When to travel
October
Cheapest • 14% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Calgary (YYC)
Cheapest • Avg C$ 603 (round-trip)
Denver Intl (DEN)
Shortest trip • 7h 47m (one-way)
Insights
Insights
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We hope you enjoy your trip to Montreal Pierre Elliott Trudeau Intl Airport!
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Expert advice
Flight Deals

Cheap Flights from Seattle to Montreal (SEA-YUL)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Montreal

Thu, 18 Feb - Mon, 22 Feb
Air Canada Logo
3:15 p.m. - 7:10 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
12h 55m2 stops Vancouver Intl Calgary
Air Canada Logo
8:05 a.m. - 6:22 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
13h 17m2 stops Edmonton Vancouver Intl
C$ 666Air Canada
Fri, 27 Nov - Thu, 3 Dec
Air Canada Logo
6:00 a.m. - 7:47 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
10h 47m1 stop Detroit Metropolitan Wayne County
Air Canada Logo
8:45 a.m. - 2:37 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
8h 52m1 stop Vancouver Intl
C$ 683Air Canada
Mon, 23 Nov - Tue, 1 Dec
Air Canada Logo
3:15 p.m. - 7:10 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
12h 55m2 stops Vancouver Intl Calgary
Air Canada Logo
8:05 a.m. - 6:22 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
13h 17m2 stops Edmonton Vancouver Intl
C$ 685Air Canada
Fri, 27 Nov - Thu, 3 Dec
Air Canada Logo
8:40 a.m. - 7:35 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
7h 55m1 stop Vancouver Intl
Air Canada Logo
1:05 p.m. - 9:57 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
11h 52m2 stops Edmonton Vancouver Intl
C$ 691Air Canada
Thu, 18 Feb - Mon, 22 Feb
Air Canada Logo
8:40 a.m. - 7:35 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
7h 55m1 stop Vancouver Intl
Air Canada Logo
8:05 a.m. - 6:22 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
13h 17m2 stops Edmonton Vancouver Intl
C$ 694Air Canada
Fri, 27 Nov - Thu, 3 Dec
Air Canada Logo
3:15 p.m. - 7:10 a.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
12h 55m2 stops Vancouver Intl Calgary
Air Canada Logo
1:05 p.m. - 9:57 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
11h 52m2 stops Edmonton Vancouver Intl
C$ 695Air Canada
Fri, 4 Dec - Thu, 10 Dec
Air Canada Logo
10:10 a.m. - 11:34 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
10h 24m2 stops Vancouver Intl Calgary
Air Canada Logo
1:05 p.m. - 9:57 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
11h 52m2 stops Edmonton Vancouver Intl
C$ 699Air Canada
Mon, 23 Nov - Tue, 1 Dec
Air Canada Logo
10:10 a.m. - 8:30 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
7h 20m1 stop Vancouver Intl
Air Canada Logo
8:05 a.m. - 6:22 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
13h 17m2 stops Edmonton Vancouver Intl
C$ 701Air Canada
Fri, 4 Dec - Thu, 10 Dec
Air Canada Logo
1:45 p.m. - 11:41 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
6h 56m1 stop Minneapolis St Paul
Air Canada Logo
7:30 a.m. - 2:37 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
10h 07m1 stop Vancouver Intl
C$ 706Air Canada
Fri, 4 Dec - Thu, 10 Dec
Air Canada Logo
10:10 a.m. - 11:34 p.m.SEA  Seattle/Tacoma Intl-YUL Montreal Pierre Elliott Trudeau Intl
10h 24m2 stops Vancouver Intl Calgary
Air Canada Logo
7:30 a.m. - 2:37 p.m.YUL  Montreal Pierre Elliott Trudeau Intl-SEA Seattle/Tacoma Intl
10h 07m1 stop Vancouver Intl
C$ 709Air Canada
Booking Insights

Price, demand, and travel trends for Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

Round-trip flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport typically range from C$ 792 to C$ 1,151. The lowest price found in the past 5 days was C$ 666, on Air Canada.

What's the cheapest day of the week to fly from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Seattle to Montreal Pierre Elliott Trudeau Intl Airport. It's 11% cheaper than the average day, while Monday is the most expensive, with prices 7% higher.

What is the cheapest month to fly from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

•October is the cheapest month to fly from Seattle to Montreal Pierre Elliott Trudeau Intl Airport at C$ 820 round-trip.
•December (C$ 1,127) and June (C$ 1,053) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 37% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport the cheapest?

Flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport are cheapest 23 weeks before departure. Booking in this window typically costs about 54% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Expert advice

Expert advice for your flight from Seattle to Montreal

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Mark Stachiew

Mark Stachiew

Expert on YUL

Mark Stachiew has been exploring the world and writing about it for more than 30 years. His travel stories have appeared in numerous newspapers, magazines and online publications in Canada, the United States and beyond.

Read more
Harriet Baskas

Harriet Baskas

Expert on SEA

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more

Key details for Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights

Low season

February

Cheapest flight

C$ 316
Beat the crowds with an average 63% drop in traveller numbers.
The most popular month to fly with an average 47% increase in traveller numbers.
One-way flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport

When to book flights from Seattle to Montreal

Are your dates flexible? Find out the best times to travel from Seattle to Montreal based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Seattle to Montreal Pierre Elliott Trudeau Intl Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • Which cabin classes can I book on flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

    Only Economy Class is available on flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport.

  • How long does a flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport take?

    A direct flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport takes 00m, covering 5,895 km.

  • Do I need a passport to fly from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Seattle to Montreal Pierre Elliott Trudeau Intl Airport flight?

    Round-trip flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport range from C$ 792 to C$ 1,151, with an average of C$ 955 over the past 12 months. Anything below C$ 792 counts as a good deal.

  • How expensive are last-minute Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights?

    Last-minute fares on this route (booked within two weeks of departure) run 35% above the C$ 955 route average. Book 23 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

    On this route, layover flights are cheaper than direct options on average. Layover fares average C$ 603 round-trip via Calgary (YYC), compared to C$ 1,039 for direct.

  • What is the standard checked bag allowance on flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

    There is no standard. Checked bag policies vary by airline on this route. Most carriers charge C$ 91–C$ 117 for the first checked bag in economy. Premium fares and elite status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

    The Airbus A220-300 family is used most often on this route, operated mainly by United Airlines and Air Canada. Other aircraft seen on the route include Airbus A330-300 variants.

  • Have flight prices from Seattle to Montreal Pierre Elliott Trudeau Intl Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about C$ 666 to C$ 2,200. That means the highest observed fare was about 3x higher than the lowest one.

  • Which airlines offer Wi-Fi on Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights?

    Air Canada is the only airline on the Seattle to Montreal Pierre Elliott Trudeau Intl Airport route offering in-flight Wi-Fi. Pricing depends on fare class.

  • How are flight prices from Seattle to Montreal Pierre Elliott Trudeau Intl Airport looking right now?

    One-way fares from Seattle to Montreal Pierre Elliott Trudeau Intl Airport are currently lower than usual. Average one-way flight prices are about C$ 334, which is 18% below the typical average for this route.

  • What car rental options are available at Montreal Pierre Elliott Trudeau Intl Airport (YUL)?

    Montreal Pierre Elliott Trudeau Intl Airport (YUL) hosts 5 major car rental companies, with daily rates averaging C$ 73 for economy cars. Top options include:

    • Routes Car & Truck Rentals
    • Alamo
    • Thrifty
    • Hertz
    • Avis

  • Which airports can I use when flying from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

    Flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport usually depart from Seattle/Tacoma Intl (SEA) and arrive at Montreal Pierre Elliott Trudeau Intl (YUL).

  • Which airports do connecting flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport pass through?

    One-stop flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport most commonly connect through:

    • Vancouver Intl (YVR) – 43% of one-stop connections
    • Toronto Pearson Intl (YYZ) – 22% of one-stop connections
    • Calgary (YYC) – 14% of one-stop connections
    • Chicago O'Hare Intl (ORD) – 10% of one-stop connections

  • Can I save money by using flexible dates for flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

    Yes. Flexible dates can save you up to 18% on flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport. Wednesday is the cheapest departure day at C$ 850 round-trip on average, while Monday is the most expensive at C$ 1,029, a difference of C$ 179.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport when travelling from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

    Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 7h 47m, compared with 7h 53m via Minneapolis St Paul (MSP) and 8h 23m via Toronto Pearson Intl (YYZ).

  • What is the time difference between Seattle and Montreal Pierre Elliott Trudeau Intl Airport?

    Montreal Pierre Elliott Trudeau Intl Airport is 3 hours ahead of Seattle (Eastern Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • Which popular places can I visit in Montreal Pierre Elliott Trudeau Intl Airport?

    Some of the most popular sights in Montreal Pierre Elliott Trudeau Intl Airport are Centre Bell, Parc Jean-Drapeau, and Vieux-Port de Montréal. These are among the most viewed places in Montreal Pierre Elliott Trudeau Intl Airport on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights?

    Among airlines operating Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights:

    • Air Canada: offers extra legroom; offers free seat selection
    • United Airlines: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Air Canada: a carry-on bag and a checked bag in Economy Class
    • United Airlines: a cabin bag in Economy Class class

    Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.

Your guide to booking Seattle to Montreal Pierre Elliott Trudeau Intl Airport flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Monday. On this route, Wednesday flights average C$ 850, about C$ 179 less than Monday fares (17% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 23 weeks before you fly. On this route, that window historically saves about 54% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seattle to Montreal Pierre Elliott Trudeau Intl Airport trip for October. Fares historically average C$ 820 round-trip in that month – typically C$ 308 less than the most expensive month, which is December (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Calgary Airport (YYC) can be cheaper than flying direct. The cheapest layover option averages C$ 603 round-trip on this route – about C$ 436 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Montreal Pierre Elliott Trudeau Intl Airport.

    • Sheraton Montreal Airport Hotel
    • Aloft Montreal Airport
    • Novotel Montréal Aéroport

More options for your flight from Seattle to Montreal

Complete your trip to Montreal with a hotel stay or car rental

Car rentals in Montreal
Hotels in Montreal
Vacations in Montreal