Cheap flights from Montreal to Seattle

Round-trip
Economy
Montreal (YMQ)
Seattle (SEA)
Depart
Return
Any month
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The best prices from Montreal to Seattle/Tacoma Intl are usually found in April or January, booked 43 days in advance, depart on a Wednesday or Tuesday and return on a Monday

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 2021: compare Montreal to Seattle flight prices with the expected peak season, weather and rainfall in Seattle.
YMQ - SEA
Price
C$ 278 - C$ 524
SEA
Temperature
5 - 19 °C
SEA
Precipitation
18 - 168 mm

Popular in

December

High demand for flights, 27% potential price rise

Cheapest in

April

Best time to find cheap flights, 28% potential price drop

Round-trip from

C$ 346

From Montreal (YMQ) to Seattle/Tacoma Intl

One-way from

C$ 268

One-way flight from Montreal (YMQ) to Seattle/Tacoma Intl

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
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 44 days before your planned departure. Booking around this time can save you about 14% on the cost of this flight compared to booking a flight leaving this week. We have found prices from C$ 586 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 586.

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

April is one of the best times of the year to fly to Seattle from Montreal. Prices for April average C$ 478 per person but you can even find prices for as low as C$ 317. The most expensive prices can be found in the month of December. Opting for a April flight can save you 36% on your journey compared to booking in April

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

Departing on a Tuesday is a good option for securing a great price. You can expect to save up to 21% when planning your travel around this day of the week.

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 evening. If you’re flexible enough to do this you can expect to save up to 17% on your trip compared to booking a flight at noon.

Cheap flights from Montreal to Seattle in October, November 2021

The best prices found for YMQ to SEA flights for October, November
12 Nov - 14 Nov
C$ 367pp
YUL
Montreal Pierre Elliott Trudeau Intl
American Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
American Airlines
 
1 STOP
YUL
Montreal Pierre Elliott Trudeau Intl
2 Nov - 5 Nov
C$ 368pp
YUL
Montreal Pierre Elliott Trudeau Intl
Delta
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Delta
 
1 STOP
YUL
Montreal Pierre Elliott Trudeau Intl
12 Nov - 13 Nov
C$ 397pp
YUL
Montreal Pierre Elliott Trudeau Intl
Delta
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Delta
   
2 STOPS
YUL
Montreal Pierre Elliott Trudeau Intl

Montreal to Seattle 2021 flight deals

Cheap flights to Seattle from Montreal found for this year
12 Nov - 14 Nov
C$ 367pp
YUL
Montreal Pierre Elliott Trudeau Intl
American Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
American Airlines
 
1 STOP
YUL
Montreal Pierre Elliott Trudeau Intl
2 Nov - 5 Nov
C$ 368pp
YUL
Montreal Pierre Elliott Trudeau Intl
Delta
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Delta
 
1 STOP
YUL
Montreal Pierre Elliott Trudeau Intl
19 Dec - 29 Dec
C$ 390pp
YUL
Montreal Pierre Elliott Trudeau Intl
American Airlines
   
2 STOPS
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
American Airlines
   
2 STOPS
YUL
Montreal Pierre Elliott Trudeau Intl

Last minute flights from Montreal to Seattle

Late deals on round-trip flights to Seattle from Montreal, departing today and this week
24 Oct - 26 Oct
C$ 432pp
YUL
Montreal Pierre Elliott Trudeau Intl
Delta
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Delta
   
2 STOPS
YUL
Montreal Pierre Elliott Trudeau Intl
23 Oct - 26 Nov
C$ 451pp
YUL
Montreal Pierre Elliott Trudeau Intl
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
Air Canada
   
2 STOPS
YUL
Montreal Pierre Elliott Trudeau Intl
24 Oct - 31 Oct
C$ 454pp
YUL
Montreal Pierre Elliott Trudeau Intl
Multiple Airlines
 
1 STOP
SEA
Seattle/Tacoma Intl
SEA
Seattle/Tacoma Intl
American Airlines
   
2 STOPS
YUL
Montreal Pierre Elliott Trudeau Intl

One-way flights to Seattle/Tacoma Intl from Montreal

The cheapest one-way flights from Montreal to Seattle
6:35 a.m. - 6:20 a.m.
Multiple Airlines
3 stops
26h 45m
YUL - SEA
Multiple Airlines
C$ 268
Gotogate
9:10 a.m. - 5:22 a.m.
American Airlines
1 stop
23h 12m
YUL - SEA
American Airlines
C$ 293
2:45 a.m. - 10:26 a.m.
United Airlines
3 stops
34h 41m
YUL - SEA
United Airlines
C$ 329
United

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Montreal</span> to <span class="emphasized">Seattle</span> flights.

Flight FAQs

From Montreal to Seattle

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.

Which airlines flying from Montreal to Seattle/Tacoma Intl have flexible cancellations due to COVID-19?

Some of the carriers operating flights from Montreal to Seattle/Tacoma Intl that may be offering flexible cancellation policies are WestJet, Air Canada, and United Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Montreal to Seattle for under C$ 400 on Cheapflights?

Yes, there are multiple flights from Montreal to Seattle for under C$ 400. The cheapest flight booked recently is on American Airlines for just C$ 367, but on average you can expect to pay C$ 411.

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?

American Airlines, at C$ 367, was found to be the cheapest airline from Montreal to Seattle.Alternate airlines to your destination round-trip include Delta and Air Canada. American Airlines is 23% 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$ 190), American Airlines (C$ 218), and Delta (C$ 219).

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

Consider American Airlines, Air Canada or Alaska Airlines when booking your flight. These represent the most popular airlines when flying 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$ 437, our data shows the cheapest flight currently is C$ 218. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - Seattle/Tacoma Intl), you can expect to pay C$ 367 for that flight.

COVID Restrictions

View COVID Travel Restrictions for Seattle, WA

Do I need a COVID test to fly to Seattle from Montreal?

Information is based on travel restrictions from Montreal to Seattle/Tacoma Intl

Most visitors from Montreal need to provide a negative COVID-19 test result and/or quarantine to enter Seattle/Tacoma Intl.

COVID-19 testing requirements
Visitors from Montreal must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Seattle/Tacoma Intl.

Quarantine requirements
Visitors from Montreal are not required to quarantine after entering Seattle/Tacoma Intl.

Do I need a test to fly back to Montreal from Seattle?

Returning to Montreal from Seattle/Tacoma Intl

COVID-19 testing requirements
Visitors from Seattle/Tacoma Intl must present a negative RT-PCR (NAAT) test taken 72 hours before departing to Montreal.

Quarantine requirements
Visitors from Seattle/Tacoma Intl are not required to quarantine after entering Montreal.

Hide COVID Travel Restrictions for Seattle, WA

Destination information for Seattle

Things to know before you go - useful duration and weather info for your trip from Montreal to Seattle.
Today's exchange rate
C$ 1 = $0.81
Average temperature for October in Seattle
16.0 °C
Avg rainfall for October in Seattle
88.0 mm

Airports servicing Montreal

Montreal Pierre Elliott Trudeau Intl (YUL)
Montreal St Hubert (YHU)

Airports servicing Seattle

Top 6 airlines flying from Montreal to Seattle/Tacoma Intl

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.
Airline Cheapest Average Flexibility On-time COVID-19 safety
American Airlines
C$ 224 C$ 494 No cancel fee 71%
Search American Airlines flights
United Airlines
C$ 235 C$ 555 No cancel fee 69%
Search United Airlines flights
WestJet
C$ 245 C$ 457 No cancel fee 60%
Search WestJet flights
Delta
C$ 257 C$ 596 No cancel fee N/A
Search Delta flights
Air Canada
C$ 279 C$ 556 No cancel fee 67%
Search Air Canada flights
Alaska Airlines
C$ 312 C$ 459 No cancel fee 75%
Search Alaska Airlines flights
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