The cheapest times to fly from SEA to YUL are

  • January 1st to March 4th
  • April 16th to April 29th
  • August 13th to December 9th (except the weeks of August 27th and November 19th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SEA to YUL is late January. Prices can be as high as $788 for Sunday flights during mid December, or as low as $308 for Tuesday flights around late January.


When to Fly to Montreal

Flying from Seattle, WA (SEA) to Montreal (YUL) will usually cost between $317 to $643 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late January with an average ticket price of $312. Due to high demand the most expensive time to fly is mid December, with an average price of $633. Planning your trip to low-cost times can easily save you $322 on economy flights and even more on first-class flights. Generally, any price below $451 can be considered a good price for a round-trip SEA to YUL flight.

See below for a graph of average weekly prices for the SEA to YUL route. All prices are for round-trip tickets in USD.

SEA to YUL Flight Prices

Compared to other flights, the SEA to YUL flight is much cheaper than the average and costs much less than the average flight leaving from Seattle. The average price per mile (for a direct flight) is $0.12, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $108 (21%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $405. Return trip prices are from the YUL to SEA flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from SEA to YUL can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 5 hour 5 minutes may be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is a nonstop flight from SEA to YUL while comparing.

Destination alternative #1: Burlington International Airport (BTV) in Burlington, VT

  • 75 miles (121 km) away from YUL
  • Usually 16.85% less expensive than YUL
  • 1-layover flights available

See SEA to BTV flights

Destination alternative #2: Ottawa Macdonald Cartier International Airport (YOW) in Ottawa

  • 94 miles (151 km) away from YUL
  • Usually 9.76% less expensive than YUL
  • 1-layover flights available

See SEA to YOW flights


Flight Questions Answered

Still have questions about flying from SEA to YUL? We’ve got answers.

Which airlines fly this route?

You can find 20 major airlines flying this route most often: Air Canada, Air France, Alaska, American, British Airways, Delta, Finnair, Flybe, Iberia, JetBlue, KLM, Korean Air, Lufthansa, Norwegian, Qantas, Thomas Cook Airlines, Turkish Airlines, United, Virgin Atlantic, WestJet, and potentially more during busy seasons.

How far away is it from Pierre Elliott Trudeau International Airport to Seattle/Tacoma International Airport?

The distance between the two airports is roughly 2277 miles or 3664 kilometers.

How long does it take to fly from SEA to YUL?

The real-world flight time for a nonstop SEA to YUL flight is about 5 hour 5 minutes.

How many flights go between Seattle, WA and Montreal?

It depends on the day of the week and the date, but a typical day might have around 89 available flights from SEA to YUL.


Airport Location Info


Departing Airport

Origination code SEA
Origination airport name Seattle/Tacoma International Airport
City Seattle, WA
Country the United States
Latitude 47.5
Longitude -122.3

Return Airport

Destination code YUL
Destination airport name Pierre Elliott Trudeau International Airport
City Montreal
Country Canada
Latitude 45.5
Longitude -73.7


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.