The cheapest times to fly from SJU to SEA are

  • January 8th to March 4th
  • April 23rd to May 6th
  • August 6th to November 18th

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 SJU to SEA is late January and early February. Prices can be as high as $1158 for Sunday flights during late July, or as low as $345 for Wednesday flights around late January and early February.


When to Fly to Seattle

Flying from San Juan, PR (SJU) to Seattle, WA (SEA) will usually cost between $363 to $835 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late January and early February with an average ticket price of $382. Due to high demand the most expensive time to fly is late July, with an average price of $733. Planning your trip to low-cost times can easily save you $351 on economy flights and even more on first-class flights. Generally, any price below $522 can be considered a good price for a round-trip SJU to SEA flight.

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

SJU to SEA Flight Prices

Compared to other flights, the SJU to SEA flight is cheaper than the average and costs less than the average flight leaving from San Juan. The average price per mile (for a direct flight) is $0.09, which is far below average.


Flight Prices by Day of the Week

Wednesday 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 $173 (27%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $460. Return trip prices are from the SEA to SJU 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 SJU to SEA can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 7 hour 41 minutes may not be realistic.


Flight Questions Answered

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

Which airlines fly this route?

You can find 13 major airlines flying this route most often: Air Europa, Alaska, American, Cape Air, Delta, Emirates, Frontier, JetBlue, Qatar Airways, Southwest, Spirit, Sun Country Airlines, United, and potentially more during busy seasons.

How far away is it from Seattle/Tacoma International Airport to Luis Munoz Marin International Airport?

The distance between the two airports is roughly 3725 miles or 5995 kilometers.

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

The real-world flight time for a nonstop SJU to SEA flight is about 7 hour 41 minutes.

How many flights go between San Juan, PR and Seattle, WA?

It depends on the day of the week and the date, but a typical day might have around 81 available flights from SJU to SEA.


Airport Location Info


Departing Airport

Origination code SJU
Origination airport name Luis Munoz Marin International Airport
City San Juan, PR
Country the United States
Latitude 18.4
Longitude -66

Return Airport

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


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.