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YUL - SEA

$159 Find Cheap Flights from Montreal to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Montreal to Seattle departing on 12/5. 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
0 bags

Search hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to Seattle, 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 Montreal to Seattle, as well as popular online travel agencies
In the last 7 days travelers have searched 45,682,092 times on KAYAK, and here is why:

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Cheap Flight Deals from Montreal to Seattle (YUL-SEA)

 
These are the cheapest deals for flights from Montreal to Seattle currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Montreal to Seattle

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Montreal to Seattle.

Recent one-way flight deals from Montreal to Seattle

Only flying one-way? Below are some of the best one-way flight deals from Montreal to Seattle found on KAYAK recently.

Recent last minute flight deals from Montreal to Seattle

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Montreal to Seattle.

Recent direct flight deals from Montreal to Seattle

The latest deals for direct flights from Montreal to Seattle so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Montreal to Seattle

Find recent round-trip train or bus tickets from Montreal to Seattle.

All round-trip flight deals to Seattle

The cheapest plane tickets to Seattle found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:35 pm - 8:57 amYUL-SEA
18h 22m1 stop
1:40 pm - 9:00 amSEA-YUL
16h 20m2 stops
qui, dez 5 - qui, dez 12
6:45 am - 8:13 amYUL-SEA
28h 28m2 stops
9:21 pm - 4:35 pmSEA-YUL
16h 14m1 stop
sex, dez 6 - sex, dez 13
6:00 am - 6:44 pmYUL-SEA
15h 44m2 stops
7:10 am - 11:36 pmSEA-YUL
13h 26m2 stops
$437Delta
Find Deal
seg, jan 13 - sáb, jan 18
6:00 am - 2:45 pmYUL-SEA
11h 45m2 stops
9:41 am - 11:36 pmSEA-YUL
10h 55m2 stops
$448Delta
Find Deal
qua, jan 22 - qua, fev 12
7:00 am - 12:56 pmYUL-SEA
8h 56m1 stop
1:50 pm - 12:30 amSEA-YUL
7h 40m1 stop
$464WestJet
Find Deal
ter, abr 29 - qua, mai 7
4:45 pm - 2:21 pmYUL-SEA
24h 36m1 stop
3:15 pm - 3:36 pmSEA-YUL
21h 21m1 stop
$471WestJet
Find Deal
qua, jan 22 - qua, fev 12
7:30 am - 2:30 pmYUL-SEA
10h 00m1 stop
5:45 am - 5:03 pmSEA-YUL
8h 18m1 stop
$492Air Canada
Find Deal
qui, jan 23 - seg, jan 27
2:20 pm - 9:18 pmYUL-SEA
9h 58m1 stop
12:45 am - 4:50 pmSEA-YUL
13h 05m2 stops
$504American Airlines
Find Deal
qui, jan 23 - dom, jan 26
2:15 pm - 9:20 pmYUL-SEA
10h 05m1 stop
10:35 am - 8:43 pmSEA-YUL
7h 08m1 stop
$508Air Canada
Find Deal
qua, dez 25 - qua, jan 8
4:05 pm - 9:46 pmYUL-SEA
8h 41m1 stop
11:42 pm - 12:20 pmSEA-YUL
9h 38m1 stop
$515American Airlines
Find Deal
qua, mar 19 - seg, mar 24
5:35 pm - 8:57 amYUL-SEA
18h 22m1 stop
qui, dez 5
5:35 pm - 8:57 amYUL-SEA
18h 22m1 stop
qui, dez 5
7:00 am - 12:56 pmYUL-SEA
8h 56m1 stop
$256WestJet
Find Deal
qui, mai 1
7:30 am - 2:30 pmYUL-SEA
10h 00m1 stop
$264Air Canada
Find Deal
seg, jan 13
7:00 am - 12:56 pmYUL-SEA
8h 56m1 stop
$270WestJet
Find Deal
qua, abr 30
4:00 pm - 10:21 pmYUL-SEA
9h 21m1 stop
$280American Airlines
Find Deal
sex, dez 13
10:58 am - 8:51 pmYUL-SEA
12h 53m2 stops
$290American Airlines
Find Deal
qua, mar 26
2:15 pm - 9:20 pmYUL-SEA
10h 05m1 stop
$313Air Canada
Find Deal
qua, dez 25
8:05 am - 9:20 pmYUL-SEA
16h 15m3 stops
$355United Airlines
Find Deal
sex, jan 24
9:15 am - 9:10 pmYUL-SEA
14h 55m2 stops
$401United Airlines
Find Deal
qua, dez 25
3:55 pm - 4:23 pmYUL-SEA
27h 28m2 stops
5:28 pm - 4:35 pmSEA-YUL
20h 07m1 stop
ter, nov 19 - seg, nov 25
5:35 pm - 4:23 pmYUL-SEA
25h 48m1 stop
5:28 pm - 4:35 pmSEA-YUL
20h 07m1 stop
ter, nov 19 - seg, nov 25
4:00 pm - 4:23 pmYUL-SEA
27h 23m3 stops
5:45 am - 4:35 pmSEA-YUL
31h 50m2 stops
ter, nov 19 - seg, nov 25
12:59 pm - 11:06 pmYUL-SEA
13h 07m2 stops
10:10 pm - 12:24 pmSEA-YUL
11h 14m2 stops
$701American Airlines
Find Deal
ter, nov 19 - seg, nov 25
2:35 pm - 5:56 pmYUL-SEA
30h 21m3 stops
5:45 am - 4:35 pmSEA-YUL
31h 50m3 stops
ter, nov 19 - seg, nov 25
6:45 am - 7:34 amYUL-SEA
27h 49m2 stops
3:15 pm - 3:36 pmSEA-YUL
21h 21m1 stop
$912WestJet
Find Deal
sáb, nov 16 - ter, nov 19
6:45 am - 4:20 pmYUL-SEA
36h 35m2 stops
3:15 pm - 5:29 pmSEA-YUL
47h 14m2 stops
$939WestJet
Find Deal
sáb, nov 16 - ter, nov 19
7:14 am - 6:20 pmYUL-SEA
14h 06m1 stop
1:16 am - 3:25 pmSEA-YUL
11h 09m2 stops
$945American Airlines
Find Deal
ter, nov 19 - dom, nov 24
12:59 pm - 10:29 pmYUL-SEA
12h 30m2 stops
12:25 am - 3:25 pmSEA-YUL
12h 00m2 stops
$950American Airlines
Find Deal
ter, nov 19 - dom, nov 24
9:00 am - 2:25 pmYUL-SEA
8h 25m1 stop
6:05 am - 6:23 pmSEA-YUL
9h 18m1 stop
$1,162Air Canada
Find Deal
sáb, nov 16 - ter, nov 19
4:45 pm - 7:31 pmYUL-SEA
5h 46mnonstop
7:35 am - 3:51 pmSEA-YUL
5h 16mnonstop
$645Air Canada
Find Deal
qui, mai 8 - dom, mai 11

Flights from Montreal to Seattle - Travel Insights & Trends

Get data-powered insights and trends into flights from Montreal to Seattle 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 Montreal to Seattle?

The average price of all flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle clicked on KAYAK for each day over the last 12 months.
For Montreal to Seattle, Tuesday is the cheapest day to fly on average and Friday is the most expensive. Flying from Seattle back to Montreal, the best deals are generally found on Thursday, with Sunday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle, 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 Montreal Pierre Elliott Trudeau Intl Airport to Seattle is January, where tickets cost $457 on average. On the other hand, the most expensive months are June and December, where the average cost of tickets is $583 and $582 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 42 days before departure.

Good to know

Low season

January

High season

August

Cheapest flight

$159
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Montreal to Seattle

When to book flights from Montreal to Seattle

Are your dates flexible? Find out the best times to travel from Montreal to Seattle 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 Montreal to Seattle flights

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

    In the last 3 days, the lowest price for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle was $159 for a one-way ticket and $324 for a round-trip.

  • Do I need a passport to fly between Montreal and Seattle?

    A passport is required to fly from Montreal to Seattle.

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

    Only Air Canada offers inflight Wi-Fi service on the Montreal to Seattle flight route.

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

    The Airbus A220-300 is the aircraft model that flies most regularly on the Montreal to Seattle flight route.

  • Which airline alliances offer flights from Montreal to Seattle?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Montreal and Seattle, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Montreal to Seattle, WestJet or American Airlines?

    The two airlines most popular with KAYAK users for flights from Montreal to Seattle are WestJet and American Airlines. With an average price for the route of $428 and an overall rating of 7.3, WestJet is the most popular choice. American Airlines is also a great choice for the route, with an average price of $498 and an overall rating of 7.2.

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

    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 Montreal to Seattle.

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

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

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

    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 Seattle with an airline and back to Montreal with another airline. Booking your flights between Montreal and SEA can sometimes prove cheaper using this method.

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

    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 Seattle from Montreal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for $347 or less one-way.

Top 3 airlines serving from Montreal to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Montreal to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Montreal to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.3
WestJetOverall score based on 2804 reviews
7.4Boarding
7.1Comfort
6.2Entertainment
7.9Crew
6.2Food
Airline reviews

Agent checking me in was great. Plane was nice. Problem was with the handling of my fragile check in. They damaged my steel drum, waiting to hear back from them to see if they will take any responsibility. Think twice about travelling with something fragile, they don't seem to treat it any different than normal luggage

6.0 GoodAnonymous, Oct 2024YVR - HNL
Read more WestJet reviews

Agent checking me in was great. Plane was nice. Problem was with the handling of my fragile check in. They damaged my steel drum, waiting to hear back from them to see if they will take any responsibility. Think twice about travelling with something fragile, they don't seem to treat it any different than normal luggage

I had a problem checking in as I didn’t have the correct code. I had to phone BudgetAir.com. They charged me an additional 174US for some tax or something in order to provide me with my booking number. I will never use a third party seller again. Absolutely criminal activity. But I did get to where I wanted to go

Still sitting in a hotel when I'm due for work

My trip was two parts flying from Canada to ATL then to PNS I had confirmed seats with tickets at boarding in Canada and bags tagged for said flight. Got to ATL got help to plane before boarding ended and was told at the gate that I had no seats on this flight even though I had tickets that said so I was told by a supervisor with Delta that I was booked on flight 5 hours later not the one on my ticket had to sit in ATL not knowing if my bags were on flight I was booked on or the one I was told at the gate for 5 hours later or even if I would have seat on that flight as seats were to be assigned at gate. Will never recommend West Jet product and am not sure about Delta any longer and had never booked thru Kayak for flight before and will probably never again and will be sharing my experience with who ever will listen to me about it to warn them to avoid the problems I went thru.

Terrible experience at the gate. Charged for carry on luggage despite them meeting the requirements for sizing.

It was not clear that a shopping bag with gifts would need to be checked. Lucky that my friend checked her carry on so that she could take mine on. It contained fragile items ( and expensive). Plus they charged me $100 for that last minute change.

Never been on a long haul flight that didn't have on flight entertainment. I hope the way back is better !

It was fine for a low cost trip. No entertainment and poor food offer. The sits were ok. It was on time.

Seat barely reclined. Boarding took forever. Flight attendants were not very friendly

Worst airlines. I will never fly this again. Please warn customers. They cancelled our first flight and then gave us flight vouchers that were declined.

Flight was cancelled as I was in line for security. Next available flight got me to my destination 24 hrs later than the first. No refunds offered, just credit toward another flight. I booked with delta, got to my destination only 2 hrs behind my original flight schedule. Won’t be using American again.

Checked in the minute I was allowed and still wound up in group 8 for boarding.

great experience. minimal lines at BWI. at DFW they got a long haul 787 boarded in 30 minutes

Overall flight was as expected. It would have been better with a couple options for snack instead of only one item and if there was a TV or music as option. But overall satisfied.

The flight from CLE to JFK was fantasti! Pilots and cre were informative and accommodating.

My flight got delayed for almost 4hrs and then it thankfully went to only 2hrs. Then we were told that there were no space for carry on bags and I had to get it checked... well I counted at least 8 spaces that weren't used and I was one of the few left that actually had one. There was definitely enough space and either the crew can't count or just genuinely are so lazy they don't want to do their jobs correctly and make sure that there ACTUALLY is no space.

Due to an issue with the plane. We waited almost 2 hours to take off. The service reps were great. We had a longer layover but was able to run for it and catch our flight. This also happened on our way out. Maybe the planes need a good look over. The people who work front desk and flight attendants are the best

The experience was good! I did not try any food, or in house entertainment. I don’t believe there were any tvs. Nothing major that stood out, but low key and good! Thanks!!

The flight from Buffalo to Chicago was on an older and smaller plane. Seating was tight. Looking closely at the interior of the aircraft there were definitely signs of aging and wear.

The crew were a bit short and not as warm although they did take care of small details that I requested.

The TSA people or whatever you call them were a bit rude- I asked why I had to take my shoes off bc I'm 75 and in the USA, I don't have to. The man didn't need to snap at me. It wasn't even busy! The plane was ok, a bit small for such a long flight, but I'm very familiar with the 737 used ( I fly it often between SFO and SAN) service was ok-nothing special. If I drank alcohol I guess I would be happy with free choices. the plane was HOT and even the FA commented on it. They tried to get it cooler, but it never happened.

I have flown on many airlines all over the world, and this plane flight was the most uncomfortable I have ever experienced.

After i biked my flights, i was informed my flight was rescheduled for later time

Flight from Minneapolis to Montreal was easy, breezy. Small plane, so not much overhead space. The seats felt slightly smaller than normal, but not uncomfortable for my body type. No screens in the seats for watching movies or shows, but I don't mind, I'm more of a reader.

Excellent overall experience. Seats were comfortable and ample leg room.

Con: Travelers shouldn't have to pay a fee for first checked bag, in any fare class. Pro: Plane was new and comfortable, even for the seats that didn't cost extra.

Wheelchair help is not reliable & chaotic. No food and minimal liquids for a flight at 6;25.

I wasnt able to choose my seat during booking my flight _months_ in advance and then when I checked in for my flight, I _still_ couldnt choose my seat. I was finally able to get a seat when I got to the gate, and they stuck me in a middle seat next to a jerk. This was my return flight, and on my departing flight I was able to choose my seat, so I dont understand what the issue was but it was very annoying and a miserable ~6.5 hours on the return flight.

Gate changed twice, boarding late. However, there was more than usual leg room. Crew was fine. No entertainment due to computer problem.

I don’t think the on-board testing worked on any of the 4 Air Canada flights for this trip. And in this particular flight, the entertainment and WiFi was out for a portion of the journey.

Book cheap flights from Montreal to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Montreal to Seattle found on KAYAK in the last 72 hours.
12/5qui
1 stop
18h 22mYUL-SEA
$159
12/5qui
1 stop
18h 22mYUL-SEA
$177
5/1qui
1 stopWestJet
8h 56mYUL-SEA
$256
1/13seg
1 stopAir Canada
10h 00mYUL-SEA
$264
4/30qua
1 stopWestJet
8h 56mYUL-SEA
$270
12/13sex
1 stopAmerican Airlines
9h 21mYUL-SEA
$280
3/26qua
2 stopsAmerican Airlines
12h 53mYUL-SEA
$290
12/25qua
1 stopAir Canada
10h 05mYUL-SEA
$313
1/24sex
3 stopsUnited Airlines
16h 15mYUL-SEA
$355
12/25qua
2 stopsUnited Airlines
14h 55mYUL-SEA
$401

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Last minute flights from Montreal to Seattle

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Montreal to Seattle that are departing in the next 10 days.
11/19ter
multi-stop
27h 28mYUL-SEA
11/25seg
multi-stop
20h 07mSEA-YUL
$513
11/19ter
multi-stop
25h 48mYUL-SEA
11/25seg
multi-stop
20h 07mSEA-YUL
$590
11/19ter
multi-stop
27h 23mYUL-SEA
11/25seg
multi-stop
31h 50mSEA-YUL
$636
11/19ter
multi-stopAmerican Airlines
13h 07mYUL-SEA
11/25seg
multi-stopAmerican Airlines
11h 14mSEA-YUL
$701
11/19ter
multi-stop
30h 21mYUL-SEA
11/25seg
multi-stop
31h 50mSEA-YUL
$723
11/16sáb
multi-stopWestJet
27h 49mYUL-SEA
11/19ter
multi-stopWestJet
21h 21mSEA-YUL
$912
11/16sáb
multi-stopWestJet
36h 35mYUL-SEA
11/19ter
multi-stopWestJet
47h 14mSEA-YUL
$939
11/19ter
multi-stopAmerican Airlines
14h 06mYUL-SEA
11/24dom
multi-stopAmerican Airlines
11h 09mSEA-YUL
$945
11/19ter
multi-stopAmerican Airlines
12h 30mYUL-SEA
11/24dom
multi-stopAmerican Airlines
12h 00mSEA-YUL
$950
11/16sáb
multi-stopAir Canada
8h 25mYUL-SEA
11/19ter
multi-stopAir Canada
9h 18mSEA-YUL
$1,162

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

Information on your arrival and departure airports