YUL - SEA

C$ 246 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 22/1. 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, travellers have searched 41,299,237 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.

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.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:35 p.m. - 5:00 p.m.YUL-SEA
26h 25m2 stops
5:16 p.m. - 4:35 p.m.SEA-YUL
20h 19m1 stop
C$ 415
Find Deal
Tue, 21 Jan - Mon, 27 Jan
6:45 a.m. - 12:19 a.m.YUL-SEA
20h 34m2 stops
5:16 p.m. - 4:35 p.m.SEA-YUL
20h 19m1 stop
C$ 419
Find Deal
Wed, 22 Jan - Mon, 27 Jan
7:00 a.m. - 2:18 p.m.YUL-SEA
10h 18m1 stop
1:30 p.m. - 11:25 p.m.SEA-YUL
6h 55m1 stop
C$ 529Delta
Find Deal
Sun, 19 Jan - Wed, 29 Jan
4:50 p.m. - 10:25 p.m.YUL-SEA
8h 35m1 stop
6:00 a.m. - 4:00 p.m.SEA-YUL
7h 00m1 stop
C$ 553Delta
Find Deal
Fri, 17 Jan - Fri, 24 Jan
7:30 a.m. - 2:25 p.m.YUL-SEA
9h 55m1 stop
10:35 a.m. - 8:43 p.m.SEA-YUL
7h 08m1 stop
C$ 608Air Canada
Find Deal
Sat, 18 Jan - Thu, 23 Jan
2:15 p.m. - 9:30 p.m.YUL-SEA
10h 15m1 stop
5:45 a.m. - 5:03 p.m.SEA-YUL
8h 18m1 stop
C$ 615Air Canada
Find Deal
Mon, 20 Jan - Tue, 28 Jan
7:00 a.m. - 1:08 p.m.YUL-SEA
9h 08m1 stop
2:05 p.m. - 12:43 a.m.SEA-YUL
7h 38m1 stop
C$ 664WestJet
Find Deal
Thu, 26 Jun - Sat, 5 Jul
4:45 p.m. - 2:21 p.m.YUL-SEA
24h 36m1 stop
9:45 p.m. - 3:36 p.m.SEA-YUL
14h 51m2 stops
C$ 677WestJet
Find Deal
Mon, 13 Jan - Sat, 18 Jan
5:15 p.m. - 9:20 p.m.YUL-SEA
31h 05m2 stops
11:59 p.m. - 9:17 p.m.SEA-YUL
18h 18m1 stop
C$ 839United Airlines
Find Deal
Fri, 17 Jan - Fri, 24 Jan
6:00 a.m. - 9:11 p.m.YUL-SEA
18h 11m2 stops
11:17 p.m. - 11:59 a.m.SEA-YUL
9h 42m1 stop
C$ 886United Airlines
Find Deal
Sat, 11 Jan - Sat, 18 Jan

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 round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Seattle clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Montreal to Seattle, look for departures on Wednesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Seattle, Monday is the cheapest day to fly and Tuesday is 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 round-trip 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$ 705 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is C$ 870 and C$ 840 respectively.

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

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 2 stops layover the cheapest option at C$ 593 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip 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 week.
To get a below average price on the flight from Montreal Pierre Elliott Trudeau Intl Airport to Seattle, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low season

November

High season

August

Cheapest flight

C$ 246
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly and prices are also 4% 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 C$ 171 for a one-way ticket and C$ 288 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?

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

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

    The two airlines most popular with KAYAK users for flights from Montreal to Seattle are Delta and United Airlines. With an average price for the route of C$ 823 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of C$ 852 and an overall rating of 7.4.

  • 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

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 C$ 746 or less round-trip.

Top 4 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.
8.0
DeltaOverall score based on 8556 reviews
7.3Food
7.9Entertainment
8.0Comfort
8.2Boarding
8.6Crew
Airline reviews

Overall, it was okay. Seat was a little cramped. Would’ve liked more substantial snacks or opportunity to buy some.

8.0 ExcellentLavenia, Dec 2024ATL - SEA
Read more Delta reviews

Overall, it was okay. Seat was a little cramped. Would’ve liked more substantial snacks or opportunity to buy some.

Inexpensive, got an exit row aisle aeat with no middle passenger, bought a great breakfast sandwich, flight comfortable & arrived ahead of schedule.

Very dissatisfied with the fact that I had upgraded to first class for the second part of my trip only to find out that the lounge was still not available to me, as well as not having any food or drink service on the flight due to weather, so I lost out more than what I paid for.

Delta was great the entertainment was outdated. Screen was very small and didn’t work.

The seats are uncomfortable, feels like a small seat pad on plywood.

My husband is very tall and we generally fly Delta Comfort. We used our companion benefit, and our seats were coach and extremely uncomfortable........ horrid even

My seat had no padding, it was literally plywood with a plastic cover. I could not change seats on my 10 hour flight. My excitement for this trip helped me deal with the pain.

Overall it was not that bad! The delay on the second leg to Indianapolis , was really unexpected!!

I notice that every time I fly delta or any American carrier, the staff seem tired, overworked, and not at the service level I’m accustomed to in Asia. They frequently crash into my arm when coming down the aisle. Food is shoved at my face with no greeting or verbal cue. The food portions seemed much smaller than usual and didn’t see much wine or beverage options. This is comfort plus? The plane was old and tired. The bathroom was dripping with mineral stains after a long lack of cleaning. The power socket did not work, although the USB output did. I really wonder why I’m flying Delta, I think it’s time to switch to ANA.

It was very good. Our flight was delayed and we as a result missed our connecting flight but rescheduled to the next day. The Need Help staff was so great and offered us compensation that was beyond satisfactory.

Everything was good. Flight was on time, luggage pickup was quick. The staff were great. Could not ask for anything more.

lots of delays the crew were unclear about where to pick up my carry-on, which they took from me to check in on the plane.

They needed people to check a bag, they did check my bag and I had to wait 10 minutes after the flight to get it it wasn’t too bad

HORRIBLE WITH THEIR WEBSITE!!! WORST WEBSITE IN THE WHOLE AIRLINE INDUSTRY

It was 4 hours late. Almost missed my connecting flight no food or drinks on connecting flight. Overall terrible experience

Cramped seats. Audio jack for the in -flight entertainment was broken.

United airlines was top for my last trip in every way

Horrible; seating was atrocious - inadequate leg room and seat width tight even for a small individual. Profits shouldn’t be everything!

Connection coordination with Star Alliance partner could be better. Lots of check in setup was not interlinked between operators.

There was no room in overhead bin to place our luggage despite we had tree seats. It means a lot of people had more than 1 carry on bags. When I asked a crew member to help she said that it was not her responsibility.

it's all good nothing you can do make better 😌

Very old planes. Seats were not comfortable. Air was not on during the flight leading to incredibly stuffy conditions.

It was so bad experience they wanted just charged passengers for any reason.

Delta was great. West Jet was not. I booked my flight in Sept (well over two months ago), but was told there were 2 reservations and NO tickets for me, my husband and 16mo daughter. We were unable to go ahold of West Jet over the phone and the kiosk was unhelpful so we had to buy completely new tickets in order to get home that day. I’ve called West Jet twice since and sat on the phone for over an hour without speaking to any representatives.

The seats were some of the most uncomfortable I've ever been on. Other similar-sized jets with the same seating arangement have been far more comfortable. This interfered with sleeping, so it was a big issue. Moreover, the lack of a digital boarding pass forced an extra trip to print one, and the overall digital experience was poor. WestJet's website could not figure out one of my flights existed.

The seats were some of the most uncomfortable I've ever been on. Other similar-sized jets with the same seating arangement have been far more comfortable. This interfered with sleeping, so it was a big issue.

flight was delayed and stewards were preoccupied and not helping passengers. The pilot was very communicative which was great. The window was dirty as were the back of the front seats with chewed gum and slime on it. I hope this helps.

Traveling on two legs the food was identical and not very good

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

ground crew at Casablanca as well as at Montreal was not helpful at all. specially at Montreal airport, very rude .

3 hours late departure with no explanation. $160 luggage fee (two passengers) for less than 1 hour in the air!

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.

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.
22/1Wed
2 stops
20h 34mYUL-SEA
C$ 246
18/2Tue
2 stopsWestJet
27h 51mYUL-SEA
C$ 268
18/2Tue
1 stopDelta
12h 36mYUL-SEA
C$ 306
22/1Wed
1 stopAmerican Airlines
14h 56mYUL-SEA
C$ 313
3/3Mon
1 stopAmerican Airlines
17h 39mYUL-SEA
C$ 330
18/2Tue
1 stopAir Canada
10h 00mYUL-SEA
C$ 342
26/2Wed
2 stopsDelta
11h 45mYUL-SEA
C$ 369
1/3Sat
1 stopAir Canada
12h 15mYUL-SEA
C$ 398
12/6Thu
directUnited Airlines
5h 52mYUL-SEA
C$ 500
5/1Sun
1 stopUnited Airlines
18h 12mYUL-SEA
C$ 839

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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.
1/1Wed
multi-stop
47h 26mYUL-SEA
13/1Mon
multi-stop
20h 12mSEA-YUL
C$ 793
30/12Mon
multi-stopAmerican Airlines
12h 12mYUL-SEA
8/1Wed
multi-stopAmerican Airlines
20h 52mSEA-YUL
C$ 797
31/12Tue
multi-stopDelta
12h 58mYUL-SEA
9/1Thu
multi-stopDelta
11h 11mSEA-YUL
C$ 820
30/12Mon
multi-stop
23h 00mYUL-SEA
13/1Mon
multi-stop
20h 12mSEA-YUL
C$ 839
31/12Tue
multi-stopDelta
12h 58mYUL-SEA
13/1Mon
multi-stopDelta
11h 40mSEA-YUL
C$ 846
30/12Mon
multi-stopWestJet
23h 00mYUL-SEA
14/1Tue
multi-stopWestJet
21h 21mSEA-YUL
C$ 928
31/12Tue
multi-stopWestJet
13h 15mYUL-SEA
16/1Thu
multi-stopWestJet
12h 15mSEA-YUL
C$ 992
2/1Thu
multi-stopAir Canada
9h 00mYUL-SEA
17/1Fri
multi-stopAir Canada
10h 50mSEA-YUL
C$ 1,327
29/12Sun
multi-stopAir Canada
8h 25mYUL-SEA
19/6Thu
directAir Canada
5h 09mSEA-YUL
C$ 1,349
29/12Sun
multi-stopUnited Airlines
20h 14mYUL-SEA
4/1Sat
multi-stopUnited Airlines
15h 35mSEA-YUL
C$ 1,669

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

Information on your arrival and departure airports

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