The cheapest times to fly from SEA to YYT are

  • January 8th to March 4th
  • August 6th to December 9th

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 YYT is early September. Prices can be as high as $1160 for Sunday flights during mid December, or as low as $549 for Tuesday flights around early September.


When to Fly to St. John’s

Flying from Seattle, WA (SEA) to St. John’s (YYT) will usually cost between $574 to $1007 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early September with an average ticket price of $576. Due to high demand the most expensive time to fly is mid December, with an average price of $1036. Planning your trip to low-cost times can easily save you $460 on economy flights and even more on first-class flights. Generally, any price below $706 can be considered a good price for a round-trip SEA to YYT flight.

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

SEA to YYT Flight Prices

Compared to other flights, the SEA to YYT flight is cheaper than the average and costs less than the average flight leaving from Seattle. The average price per mile (for a direct flight) is $0.14, 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 $97 (12%) 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 $696. Return trip prices are from the YYT 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 YYT can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 6 hour 37 minutes may not be realistic.


Flight Hacking SEA to YYT

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from SEA to YYT — but Champion Traveler does!

Hack #1: Boston, MA (SEA > BOS > YYT)

  • Price for both tickets: $647
  • Average savings: $60 (8.43%)

See SEA to BOS flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 6 major airlines flying this route most often: Air Canada, Alaska, Delta, Korean Air, United, WestJet, and potentially more during busy seasons.

How far away is it from St. John’s International Airport to Seattle/Tacoma International Airport?

The distance between the two airports is roughly 3130 miles or 5037 kilometers.

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

The real-world flight time for a nonstop SEA to YYT flight is about 6 hour 37 minutes.

How many flights go between Seattle, WA and St. John’s?

It depends on the day of the week and the date, but a typical day might have around 86 available flights from SEA to YYT.


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 YYT
Destination airport name St. John’s International Airport
City St. John’s
Country Canada
Latitude 47.6
Longitude -52.8


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.