Cheap flights from Montreal to Seattle from C$ 200

This is the cheapest one-way flight price, found on 21/9. Prices may vary by date and flight preferences.
YMQ — SEA
26 Sep — 3 Oct2
2 travellers
Economy
From?
To?
Tue 26/9
Tue 3/10

How to find the cheapest flight from Montreal (YMQ) to Seattle (SEA)

All the information you need to plan the best YMQ to SEA flight in 2023: compare Montreal to Seattle flight prices with the expected peak season, weather and rainfall in Seattle.

Popular in

July

Cheapest in

January

Round-trip from

C$ 570

One-way from

C$ 354
High demand for flights, 22% potential price rise
Best time to find cheap flights, 16% potential price drop
From Montreal (YMQ) to Seattle/Tacoma Intl
One-way flight from Montreal (YMQ) to Seattle/Tacoma Intl

YMQ - SEA

Price

C$ 424 - C$ 836

SEA

Temperature

5 - 19 °C

SEA

Rainfall

18 - 168 mm

What is the cheapest day to fly round-trip from Montreal to Seattle?

Departing on a Wednesday is a good option for securing a great price. You can expect to save up to 22% when planning your travel around this day of the week.

How far in advance should I book a flight from Montreal to Seattle?

To save on the cost of your flight from Montreal to Seattle, book at least 22 days before your planned departure. Booking around this time can save you about 37% on the cost of this flight compared to booking a flight leaving this week. We have found prices from C$ 774 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 1,055.

What is the cheapest month to fly from Montreal to Seattle?

January is one of the best times of the year to fly to Seattle from Montreal. Prices for January average C$ 682 per person but you can even find prices for as low as C$ 526. The most expensive prices can be found in the month of July. Opting for a January flight can save you 27% on your journey compared to booking in July

When is the cheapest time to fly from Montreal to Seattle (YMQ - SEA)?

A simple way to save on the total cost of your ticket is to fly from Montreal to Seattle in the afternoon. If you’re flexible enough to do this you can expect to save up to 2% on your trip compared to booking a flight at noon.

Cheap United Airlines flights from Montreal to Seattle

Peruse some of the lowest-priced United Airlines flights we've found from Montreal to Seattle. Come back soon if you're not finding the exact deal you're looking for.

Cheap American Airlines flights from Montreal to Seattle

To aid your search, here are some of the cheapest American Airlines flights we've found from Montreal to Seattle. Ensure the flight price, dates, time, and airline match your criteria before you book.

Cheap Montreal to Seattle flights in September & October 2023

The best prices found for YMQ to SEA flights for September, October
These are some of the best deals we've found on flights to Seattle in 2023 at this time. Check back in a little while for more flight options.

Montreal to Seattle 2023 flight deals

Cheap flights to Seattle from Montreal found for this year
These are some of the best deals we've found on flights to Seattle in 2023 at this time. Check back in a little while for more flight options.

Direct flights to Seattle from Montreal

Save time with Montreal to Seattle direct flight deals
For a shorter flight, select one of these non-stop flights from Montreal to Seattle. Those looking to potentially save on 1 or 2-stop flights from Montreal to Seattle should utilize the search form at the top of the page.

Montreal to Seattle flights leaving soon

Late deals on round-trip flights to Seattle from Montreal, departing today and this week
Check out these flights departing soon from Montreal to Seattle. Users should be sure to double check the price, date, and time of their last-minute flight.

One-way flights to Seattle from Montreal

The cheapest one-way flights from Montreal to Seattle
Take a look at some of the best available options we've come across on one-way flights from Montreal to Seattle. Users needing a return flight from Montreal to Seattle should utilize the search form above.

Find flights from Montreal to Seattle within your budget

Use the slider to find flights from Montreal to Seattle that fit your budget.

Fly from

Any airport

Fly to

Any airport

Budget

C$ 453 - C$ 1,003

Route

Depart

Return

Price

Montreal Pierre Elliott Trudeau IntlSeattle/Tacoma Intl

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 27/10

1 stop22h 48m

Seattle/Tacoma Intl

Tue 7/11

2 stops18h 21m

C$ 453

Montreal Pierre Elliott Trudeau IntlSeattle/Tacoma Intl

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 13/10

1 stop20h 50m

Seattle/Tacoma Intl

Thu 19/10

2 stops23h 35m

C$ 504

Montreal Pierre Elliott Trudeau IntlSeattle/Tacoma Intl

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Wed 18/10

3 stops30h 05m

Seattle/Tacoma Intl

Wed 25/10

1 stop13h 45m

C$ 516

Montreal Pierre Elliott Trudeau IntlSeattle/Tacoma Intl

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 13/10

Nonstop5h 59m

Seattle/Tacoma Intl

Thu 19/10

Nonstop5h 00m

C$ 581

Montreal Pierre Elliott Trudeau IntlSeattle/Tacoma Intl

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Fri 13/10

Nonstop5h 59m

Seattle/Tacoma Intl

Thu 19/10

1 stop8h 20m

C$ 587

Montreal Pierre Elliott Trudeau IntlSeattle/Tacoma Intl

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 2/3

1 stop19h 56m

Seattle/Tacoma Intl

Wed 6/3

1 stop18h 30m

C$ 605

Montreal Pierre Elliott Trudeau IntlSeattle/Tacoma Intl

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Tue 31/10

1 stop14h 45m

Seattle/Tacoma Intl

Mon 6/11

1 stop20h 51m

C$ 612

Montreal Pierre Elliott Trudeau IntlSeattle/Tacoma Intl

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sat 7/10

2 stops17h 25m

Seattle/Tacoma Intl

Sat 14/10

2 stops26h 30m

C$ 788

Montreal Pierre Elliott Trudeau IntlSeattle/Tacoma Intl

YUL - SEA

YULSEA

Montreal Pierre Elliott Trudeau Intl

Sun 15/10

1 stop18h 26m

Seattle/Tacoma Intl

Fri 20/10

1 stop11h 52m

C$ 1,003

Flights are sorted by cheapest first

Deals found on 20/9

Reviews of airlines servicing Seattle

See what other customers who have flown with United Airlines, American Airlines and WestJet from Montreal to Seattle have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
1,393 reviews

Crew

8.6

Comfort

8.0

Food

7.2

Overall

8.1

Entertainment

7.2

Boarding

8.3

Reviews

1 / 10

Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!

Alaska Airlines
8.1
Very good
1,393 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Crew

8.6

Comfort

8.0

Food

7.2

Overall

8.1

Entertainment

7.2

Boarding

8.3

Reviews

1 / 10

Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!

Delta
7.9
Good
3,019 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Crew

8.6

Comfort

8.0

Food

7.2

Overall

8.1

Entertainment

7.2

Boarding

8.3

Reviews

1 / 10

Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!

United Airlines
7.4
Good
1,887 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Crew

8.6

Comfort

8.0

Food

7.2

Overall

8.1

Entertainment

7.2

Boarding

8.3

Reviews

1 / 10

Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!

American Airlines
7.2
Good
2,635 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Crew

8.6

Comfort

8.0

Food

7.2

Overall

8.1

Entertainment

7.2

Boarding

8.3

Reviews

1 / 10

Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!

WestJet
7.2
Good
916 reviews
Alaska Airlines
8.1
Very good
1,393 reviews

Crew

8.6

Comfort

8.0

Food

7.2

Overall

8.1

Entertainment

7.2

Boarding

8.3

Reviews

1 / 10

Was forced to check my bag, didn’t want to but really upset when got on the plane and nearly all the overheads were empty. And then even more upset when they lost my bag! So far it’s been 5 hours and they have no clue where my bag went. Don’t force me to check a normal carry on when there’s more than enough room!

Related info for your journey

Useful info, stats and facts about Montreal to Seattle flights.

What airport do you fly into for flights to Seattle from Montreal?

Located just 18.4 km from the city centre, Seattle/Tacoma Intl is the airport most travellers will use when flying to Seattle from Montreal. Booking flights from Montreal to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 0 daily inbound flights from Montreal from 6 different airlines.

Can I find flights from Montreal to Seattle for under C$ 500 on Cheapflights?

Yes, there are multiple flights from Montreal to Seattle for under C$ 500. The cheapest flight booked recently is on Multiple Airlines for just C$ 453, but on average you can expect to pay C$ 562.

Are there direct flights from Montreal to Seattle for under C$ 600 on Cheapflights?

Cheapflights has 11 direct flights from Montreal to Seattle under C$ 600. A good price for a direct flight from Montreal to Seattle is less than C$ 832.

Are there last-minute flights available from Montreal to Seattle for under C$ 500?

There are currently 20+ open flights from Montreal to Seattle within the next 7 days for less than C$ 500.

What are the cheapest airlines flying from Montreal to Seattle round-trip?

Air Canada, at C$ 581, was found to be the cheapest airline from Montreal to Seattle.Alternate airlines to your destination round-trip include United Airlines and American Airlines. Air Canada is 14% cheaper than the average price of flights available within the next 90 days to this destination.

What are the cheapest airlines to fly from Montreal to Seattle one-way?

The cheapest airlines for a one-way flight from Montreal to Seattle are Air Canada (C$ 324), American Airlines (C$ 341), and Delta (C$ 360).

What are the most popular airlines that fly from Montreal to Seattle?

What are the cheapest flights from Montreal to Seattle?

While on average a flight from Montreal to Seattle is generally C$ 493, our data shows the cheapest flight currently is C$ 311. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - Seattle/Tacoma Intl), you can expect to pay C$ 345 for that flight.

What does YUL to SEA mean?

YUL stands for Montreal Pierre Elliott Trudeau Intl Airport, while SEA stands for Seattle/Tacoma Intl Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

Other flights to Seattle

Top 6 airlines flying from Montreal to Seattle

The chart below displays the airlines Cheapflights users travelling from Montreal to Seattle choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 445AverageC$ 657FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Alaska AirlinesCheapestC$ 446AverageC$ 699FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
DeltaCheapestC$ 520AverageC$ 597FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 524AverageC$ 641FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 535AverageC$ 632FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Endeavor AirlinesCheapestC$ 730AverageC$ 838FlexibilityNo cancel feeOn-timeN/A
Search Endeavor Airlines flights

Hourly flight availability from Montreal to Seattle

See what time of day planes typically take off from Montreal to Seattle
0%of flight departuresEarly morningMidnight to 6 am
0%of flight departuresMorning6 am to noon
100%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
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Noon
6 PM
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