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YUL - SEA

Find cheap flights from Montreal to Seattle from C$ 315

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 21/5. 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
Sat 18/5
Sat 25/5

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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to Seattle.
In the last 7 days, travellers have searched 44,553,814 times on KAYAK, and here is why:

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Cheap flight deals from Montreal to Seattle (YUL-SEA)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Montreal to Seattle 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 and deals for you by selecting your travel dates.
Choose your dates
6:14 a.m. - 3:19 p.m.YUL-SEA
12h 05m2 stops
7:37 p.m. - 11:05 a.m.SEA-YUL
12h 28m2 stops
C$ 556Delta
Find Deal
Wed, 8 May - Wed, 15 May
7:00 a.m. - 12:56 p.m.YUL-SEA
8h 56m1 stop
7:00 a.m. - 8:15 p.m.SEA-YUL
10h 15m2 stops
C$ 580WestJet
Find Deal
Tue, 27 Aug - Wed, 4 Sep
6:30 p.m. - 9:15 p.m.YUL-SEA
5h 45mdirect
7:40 a.m. - 3:47 p.m.SEA-YUL
5h 07mdirect
C$ 611Air Canada
Find Deal
Sat, 28 Sep - Fri, 11 Oct
6:30 p.m. - 9:16 p.m.YUL-SEA
5h 46mdirect
7:40 a.m. - 3:56 p.m.SEA-YUL
5h 16mdirect
C$ 614Air Canada
Find Deal
Fri, 17 May - Mon, 27 May
7:29 a.m. - 10:54 p.m.YUL-SEA
18h 25m1 stop
5:53 a.m. - 10:37 p.m.SEA-YUL
13h 44m1 stop
C$ 631American Airlines
Find Deal
Fri, 7 Jun - Sun, 9 Jun
6:15 a.m. - 6:08 p.m.YUL-SEA
14h 53m2 stops
4:47 p.m. - 6:55 a.m.SEA-YUL
11h 08m1 stop
C$ 675United Airlines
Find Deal
Wed, 8 May - Wed, 15 May
3:46 p.m. - 12:47 a.m.YUL-SEA
12h 01m1 stop
12:24 a.m. - 2:50 p.m.SEA-YUL
11h 26m1 stop
C$ 686American Airlines
Find Deal
Tue, 2 Jul - Fri, 5 Jul
2:45 p.m. - 8:45 a.m.YUL-SEA
21h 00m2 stops
7:00 a.m. - 12:31 a.m.SEA-YUL
14h 31m1 stop
C$ 701
Find Deal
Tue, 21 May - Sun, 26 May
6:40 p.m. - 11:34 a.m.YUL-SEA
19h 54m1 stop
12:44 p.m. - 10:40 a.m.SEA-YUL
18h 56m2 stops
C$ 724United Airlines
Find Deal
Sun, 15 Sep - Sat, 28 Sep
6:45 p.m. - 9:31 p.m.YUL-SEA
5h 46mdirect
1:10 p.m. - 12:39 a.m.SEA-YUL
8h 29m1 stop
C$ 738
Find Deal
Wed, 15 May - Wed, 22 May

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.
Your flight ticket price will generally be cheaper if you fly to Seattle on a Wednesday and more expensive on a Sunday. On your return trip to Montreal, you should consider flying back on a Tuesday, and avoid Mondays for better deals.

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 C$ 563 on average. On the other hand, the most expensive months are December and July, where the average cost of tickets is C$ 811 and C$ 762 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 75 days before departure.

Which airlines provide the cheapest flights from Montreal to Seattle?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Seattle from Montreal were found on WestJet (C$ 317) and Delta (C$ 330), and the lowest round-trip tickets were found on Delta (C$ 556) and WestJet (C$ 580).

Which airlines fly direct between Montreal Pierre Elliott Trudeau Intl Airport and Seattle?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle.
There is just one airline that flies from Montreal Pierre Elliott Trudeau Intl Airport to Seattle direct and that is Air Canada. The best one-way deal found from Air Canada for the route is C$ 497.

How many flights are there between Montreal Pierre Elliott Trudeau Intl Airport and Seattle per day?

There is a maximum of 1 nonstop flight a day that takes off from Montreal Pierre Elliott Trudeau Intl Airport and lands in Seattle, with an average flight time of 5h 46m. The most common departure time is 6:00 p.m. and most flights take off in the evening. Each week, there are 6 flights.

Which cabin class options are there for flights between Montreal Pierre Elliott Trudeau Intl Airport and Seattle?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Montreal to Seattle take?

Direct flights take on average 5h 45m to travel the 5,895 km between Montreal and Seattle.

What’s the earliest departure time from Montreal to Seattle?

Early birds can take the earliest flight from Montreal Pierre Elliott Trudeau Intl Airport at 6:30 pm and will be landing in Seattle at 9:16 pm.

What’s the latest departure time from Montreal to Seattle?

If you prefer to fly at night, the latest flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle jets off at 6:45 pm and lands at 9:31 pm.

Good to know

Low season

February

High season

July

Cheapest flight

C$ 315
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly (8% more expensive 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 C$ 228 for a one-way ticket and C$ 403 for a round-trip.

  • 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 is the only airline alliance operating flights between Montreal and Seattle.

  • On which days can I fly direct from Montreal to Seattle?

    You can catch a direct flight from Montreal to Seattle on Monday, Wednesday, Thursday, Friday, Saturday, and Sunday.

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

    The two airlines most popular with KAYAK users for flights from Montreal to Seattle are Delta and WestJet. With an average price for the route of C$ 741 and an overall rating of 8.0, Delta is the most popular choice. WestJet is also a great choice for the route, with an average price of C$ 683 and an overall rating of 7.5.

  • 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 travellers 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.

  • 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

Top tips for finding a cheap flight from Montreal to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 332 or less one-way and C$ 699 or less round-trip.

Prefer to fly non-stop from Montreal to Seattle?

Find which airlines fly direct from Pierre Elliott Trudeau Intl to Seattle/Tacoma Intl, which days they fly and book direct flights.

Nonstop departures

Montreal Pierre Elliott Trudeau Intl to Seattle/Tacoma Intl

Monday

Air Canada,United Airlines

Air Canada,United Airlines

Tuesday

Air Canada,United Airlines

Air Canada,United Airlines

Wednesday

Air Canada,United Airlines

Air Canada,United Airlines

Thursday

Air Canada,United Airlines

Air Canada,United Airlines

Friday

Air Canada,United Airlines

Air Canada,United Airlines

Saturday

Air Canada,United Airlines

Air Canada,United Airlines

Sunday

Air Canada,United Airlines

Air Canada,United Airlines

See more nonstop flights

Nonstop returns

Seattle/Tacoma Intl to Montreal Pierre Elliott Trudeau Intl

Monday

Air Canada,United Airlines

Air Canada,United Airlines

Tuesday

Air Canada,United Airlines

Air Canada,United Airlines

Wednesday

Air Canada,United Airlines

Air Canada,United Airlines

Thursday

Air Canada,United Airlines

Air Canada,United Airlines

Friday

Air Canada,United Airlines

Air Canada,United Airlines

Saturday

Air Canada,United Airlines

Air Canada,United Airlines

Sunday

Air Canada,United Airlines

Air Canada,United Airlines

See more nonstop flights
See more nonstop flights

Top 5 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.
8.8
Endeavor AirlinesOverall score based on 4 reviews
9.5crew
7.0entertainment
9.5comfort
9.5boarding
8.5food
Airline reviews
Pros: "seat space was great and I was lucky enough to have medium size passenger next to me :-)"
Cons: "Can't really think of anything . . . my expectations were exceeded"
8.6 ExcellentIllan, Jun. 2019YYZ - JFK
Read more about Endeavor Airlines reviews
Pros: "seat space was great and I was lucky enough to have medium size passenger next to me :-)"
Cons: "Can't really think of anything . . . my expectations were exceeded"

It was a Red-Eye flight so was not comfortable enough to sleep, but seat was as expected. Crew was great and in-flight entertainment was excellent. Flight was smooth

Standard economy seats on Deltas 767 were better than Alaska premium seats on their 737 MAX9; more legroom, wider seats. Entertainment was great, no ipad or phone required. Could have included a meal service.

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Flight was on time, the crew was personable & professional, & the plane arrived early which was nice.

This flight landed early, but deplaned late. We were stuck sitting and waiting for a gate for over an hour

My flight was very clean and the location was comfortable. The service was great. A satisfying flight!

I appreciated being upgraded. I was very disappointed with my 13 hr layover in Seattle to geg, while my friends who flew Alaska made it home as scheduled. I had to reserve a hotel on my dime.

Delta needs to step up the meals and snacks. They have been serving the same two meals for three years.... It is time to change it up.

Really liked the choice of the 4 free snack options. Crew great. Good vibe on plane.

I wish that seats closer to the front of the plan were available, but when I booked the flight the seats were VERY expensive so I did not book seats at that time. The day before flying only seats at the back of the plane were available. It takes so long to board the plane and empty the plane on arrival due to SO many roller bags.

Good flight. No I’m seat entertainment. But my phone worked just fine on the west jet app.

I had planned to watch the Westjet entertainment for the entire flight however, because the seat mounted outlets in our row did not work.

Not a bad flight but our priority tagged luggage was the very last to come down the carousel.

Plane had a flat tire, delayed boarding and takeoff but one in the air, smooth. Make sure you have downloaded the WJ app before you leave. When on board, you can watch movies or TV shows offered on the app, it passed the time very quickly.

Our recent flight from edmontown to kahalui was excellent. The service staff was very friendly, knowledgeable, funny and attentive. Thanks to all involved that made or travel such a pleasant experience and we hope to fly with west jet again soon

The flight was delayed and I missed boarding my 7 day cruise. I had to book a separate flight home

No real issues just wasnt able to hear / understand any announcements flight attendant was making but everything else was really good- ended up checking my carry on case for free which made deboarding quicker. I would fly West Jet for all my flights.

Seats were comfortable and leg room was good. Slight delay for boarding but nothing too bad. Would fly with them again.

Long lines to board with only two staff checking boarding passes!

The crew was doing their best on an old plane needing updating. Chairs that creaked and wouldn’t stay in position. My tray table was unusable as was on-board entertainment due the audio needing usb earphones (that were not provided). Prior to boarding in Toronto and despite being scheduled for a wheelchair and assistance, we were dropped off by clubcar without a wheelchair which I found myself by a gate. Due to no boarding gate assigned at that time we waited and when it was, it subsequently was moved from 64 to 95. No help could be found so I pushed my husband’s chair to that furthest gate in the airport at the highest speed possible for a 73 year old. And by that I mean I ran. It was a very stressful experience.

Wifi wasn't working on one of the UA flights after boarding.

Leg room was lacking. Legs crammed into seat in front.

T hey did a great job. Flight was on time .

the plane was old. the wifi didn’t work. the entertainment was boring and dated. the charging ports were impossible to find. i was mostly ignored by flight attendants that had no problem speaking to the man beside me. i got two drinks the entire time i was on the plane.

Crew was not very helpful. They forgot to serve me coffee and had to wait for a long time.It looked as if they were not very happy with what they were doing.

The flight I was connecting with waited for me even though my 1st flight was late. I really appreciated that.

The seat is too hard and my back and bottom are having servers pain

There was no lounge for passengers waiting before boarding the aircraft at F65, so passengers are just sitting on the floor or just spread everywhere the premises before boarding.

Great crew, friendly. Found the trip long just sitting with no onboard entertainment

As is pretty much the norm with Air Canada now, we left late from the gate (45 minutes late). This is my 12th flight with AC in the last 12 months and 10 of those flights were either late or cancelled. AC essentially has a monopoly in Canada so they have carte blanche to charge exorbitant rates now and give poor service, with no repercussions.

When we got to the airport for our flight from Chicago to Montreal which was scheduled for 2.00 p.m. they had no record of it and booked us on a flight at 3.30 very disappointing . We also had to pay 50.00 each for a seat. All things considered ,I will never book thru Kayak again. Next time I will only book directly thru Air Canada no second party booking Sue

They did not have any meal options left on the menu. Only snacks.

My flight has been canceled and I had to cancel entire trip.

Poor communication, when they chose to change my airlines to Alaska when entering back in the US. Even gate agents were confused.

No food for a 6 hours flight! Plus very expensive to buy ! Sit uncomfortable! Awful!!!

There was no food on this flight. We had less than 1/3 full plane and were not allowed to spread out. Staff gave the story of the plane had to have all of us up front for 'balance.' Total bs.

There were changes to my flight with many email and very difficult to keep up with details of changes. I consulted Air Canada website that said I was to depart Casablanca at 9:35 but when I got to airport that take off time was delayed by 2 hours. That's 2 hours at an airport instead of bed. I don't understand why Air Canada website didn't show the change in take off like they showed the change in transfer. Do better.

I was delayed from Montreal to Tokyo for 3 hours and they didn't compensate anything

Flying Business on Air Canada is wonderful. With ultimate destination in US, you get the Lounge. Only problem is there was no lounge in YQB so it had to wait until connector in YUL. Flight itself is only about 30 min like the old DC-NYC shuttle so there was no service other than almonds and the bottle of water that was at your seat upon boarding. Would have been nice to be offered a beverage and there was enough time to do a quick pass for the 16 seats. That and having a lounge in YQB are only complaints, but that's very first world complaint. The FA were cordial and professional if not warm. It was a good flight and I'd do it again. But, word to the wise, it's a very different experience doing border check in YUL than YYZ. Long walk and had to go through full screening (including taking off shoes and having to chuck the bottle I had just gotten not knowing there was going to be a frull screening since there was no warning) at YUL even though never left the terminal after landing. YYZ was just a passport check. This is not A/C's fault, but travelers should be advised/warned in advance so they know what to expect especially since you land and have access tot eh terminal and it's stores and food before you get to border check. If you have mobility issues, the distance can easily be a problem and there is no warning of how long it is until you have reached the end. My mom would not be able to navigate it and someone like her may not be able to stop in the middle of an empty long corridor to ask for mobility help. A sign offering how long (10 Min, etc.) the walk is like at new LGA terminals goes a long way. Also can be stressful if you're tight on time for a connection.

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.
21/5Tue
2 stops
21h 00mYUL-SEA
C$ 315
22/7Mon
1 stopWestJet
8h 56mYUL-SEA
C$ 317
11/5Sat
2 stopsDelta
12h 34mYUL-SEA
C$ 330
7/5Tue
2 stopsDelta
11h 25mYUL-SEA
C$ 337
17/6Mon
directAir Canada
5h 46mYUL-SEA
C$ 341
20/5Mon
1 stopUnited Airlines
17h 48mYUL-SEA
C$ 351
12/10Sat
1 stopAir Canada
8h 51mYUL-SEA
C$ 356
12/9Thu
2 stopsAmerican Airlines
11h 25mYUL-SEA
C$ 360
20/7Sat
1 stopUnited Airlines
12h 20mYUL-SEA
C$ 362
3/7Wed
2 stopsAmerican Airlines
17h 04mYUL-SEA
C$ 457

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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.
19/4Fri
multi-stopAmerican Airlines
14h 49mYUL-SEA
30/4Tue
multi-stopAmerican Airlines
14h 36mSEA-YUL
C$ 1,052
19/4Fri
multi-stopAmerican Airlines
12h 29mYUL-SEA
30/4Tue
multi-stopAmerican Airlines
14h 04mSEA-YUL
C$ 1,058
19/4Fri
multi-stopAmerican Airlines
11h 29mYUL-SEA
26/4Fri
multi-stopAmerican Airlines
12h 27mSEA-YUL
C$ 1,067
19/4Fri
multi-stop
24h 35mYUL-SEA
30/4Tue
multi-stop
28h 30mSEA-YUL
C$ 1,071
19/4Fri
multi-stopAmerican Airlines
10h 40mYUL-SEA
29/4Mon
multi-stopAmerican Airlines
13h 06mSEA-YUL
C$ 1,107
19/4Fri
multi-stopAmerican Airlines
14h 49mYUL-SEA
28/4Sun
multi-stopAmerican Airlines
10h 54mSEA-YUL
C$ 1,110
19/4Fri
multi-stopAmerican Airlines
10h 40mYUL-SEA
28/4Sun
multi-stopAmerican Airlines
18h 45mSEA-YUL
C$ 1,121
19/4Fri
multi-stopAmerican Airlines
11h 29mYUL-SEA
28/4Sun
multi-stopAmerican Airlines
11h 26mSEA-YUL
C$ 1,129
19/4Fri
multi-stopAmerican Airlines
17h 55mYUL-SEA
30/4Tue
multi-stopAmerican Airlines
13h 06mSEA-YUL
C$ 1,172
19/4Fri
multi-stopWestJet
10h 40mYUL-SEA
25/4Thu
multi-stopWestJet
10h 54mSEA-YUL
C$ 1,310

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Montreal - Seattle Flights

Departure:

Montreal (YUL)Canada

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Montreal

Cabin classes:

C$ 581