SEA - YUL

C$ 153 Find Cheap Flights from Seattle to Montreal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Montreal departing on 22/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Montreal Pierre Elliott Trudeau Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Montreal, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Montreal, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
C$ 382
Overall average: C$ 904
WestJet
Fri 1/5Sun 3/5
SEA - YUL • 1 stop
Cheapest direct flights
C$ 699
Air Canada
Fri 1/5Sun 3/5
SEA - YUL • Direct
Our travellers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
Use SEA Spot Saver for faster security at Seattle.
The 747 city bus offers 24/7 transit to downtown Montreal.
Expert advice
Expert advice
Expert advice
Expert advice
When to book
4 weeks
in advance
Our data shows that travellers who book at least 4 weeks in advance save around 44% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
May
Cheapest • 38% price drop
May
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Montreal!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Seattle to Montreal (SEA-YUL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Montreal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Montreal

Fri, 1 May - Sun, 3 May
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
WestJet Logo
8:00 p.m. - 9:40 a.m.
YUL
-
SEA
16h 40m
1 stop
C$ 382WestJet
Fri, 1 May - Mon, 4 May
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
WestJet Logo
8:00 p.m. - 9:40 a.m.
YUL
-
SEA
16h 40m
1 stop
C$ 383WestJet
Mon, 27 Apr - Thu, 30 Apr
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
WestJet Logo
8:00 p.m. - 9:40 a.m.
YUL
-
SEA
16h 40m
1 stop
C$ 391WestJet
Mon, 27 Apr - Thu, 30 Apr
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
WestJet Logo
6:45 a.m. - 6:45 p.m.
YUL
-
SEA
15h 00m
2 stops
C$ 402WestJet
Fri, 1 May - Mon, 4 May
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
WestJet Logo
6:45 a.m. - 6:45 p.m.
YUL
-
SEA
15h 00m
2 stops
C$ 423WestJet
Fri, 29 May - Mon, 1 Jun
WestJet Logo
7:35 p.m. - 7:00 a.m.
SEA
-
YUL
8h 25m
1 stop
WestJet Logo
7:25 p.m. - 6:45 p.m.
YUL
-
SEA
26h 20m
2 stops
C$ 431WestJet
Mon, 23 Mar - Wed, 25 Mar
WestJet Logo
3:10 p.m. - 7:05 a.m.
SEA
-
YUL
12h 55m
1 stop
WestJet Logo
6:45 a.m. - 2:19 p.m.
YUL
-
SEA
34h 34m
2 stops
C$ 463WestJet
Mon, 27 Apr - Thu, 30 Apr
WestJet Logo
7:35 p.m. - 6:25 p.m.
SEA
-
YUL
19h 50m
2 stops
WestJet Logo
6:45 a.m. - 6:45 p.m.
YUL
-
SEA
15h 00m
2 stops
C$ 465WestJet
Fri, 1 May - Sun, 3 May
WestJet Logo
7:35 p.m. - 6:25 p.m.
SEA
-
YUL
19h 50m
2 stops
WestJet Logo
7:25 p.m. - 6:45 p.m.
YUL
-
SEA
26h 20m
2 stops
C$ 466WestJet
Fri, 29 May - Mon, 1 Jun
WestJet Logo
7:35 p.m. - 12:40 a.m.
SEA
-
YUL
26h 05m
2 stops
WestJet Logo
7:25 p.m. - 6:45 p.m.
YUL
-
SEA
26h 20m
2 stops
C$ 474WestJet
Booking Insights

KAYAK's insights & trends for Seattle to Montreal flights

Get data-powered insights and trends into flights from Seattle to Montreal to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Seattle to Montreal?

The average price of all round-trip flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Seattle to Montreal, look for departures on Fridays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Montreal, Friday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport is May, where tickets cost C$ 501 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is C$ 1,128 and C$ 1,017 respectively.

Can I save money by flying with a layover from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at C$ 393 on average.

How far in advance should I book a flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Montreal Pierre Elliott Trudeau Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport, you should book around 4 weeks before departure, which saves you about 44% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

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Expert advice

Expert advice for your flight from Seattle to Montreal

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
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

Good to know

Low seasonJanuary
Cheapest flightC$ 153
Best time to beat the crowds (3% less expensive on average)
Most popular time to fly and prices are also 38% lower on average.
Flight from Seattle to Montreal

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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Seattle to Montreal flights

  • What is the cheapest flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport?

    In the last 3 days, the lowest price for a flight from Seattle to Montreal Pierre Elliott Trudeau Intl Airport was C$ 153 for a one-way ticket and C$ 382 for a round-trip.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to Montreal?

    Air France, Lufthansa, Air Canada, and United Airlines offer inflight Wi-Fi service on the Seattle to Montreal flight route.

  • Which aircraft models fly most regularly from Seattle to Montreal?

    The Airbus A330-200 is the aircraft model that flies most regularly on the Seattle to Montreal flight route.

  • How does KAYAK find such low prices on flights from Seattle to Montreal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Montreal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Montreal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Montreal from Seattle is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Montreal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Montreal with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Montreal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Montreal from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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

Information on your arrival and departure airports

Seattle (SEA)
Pierre Elliott Trudeau Intl (YUL)