The cheapest times to fly from SEA to KUN are

  • January 1st to April 1st (except the week of February 12th)
  • April 23rd to May 20th
  • August 20th to October 14th

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 KUN is early October. Prices can be as high as $4616 for Saturday flights during mid December, or as low as $1385 for Tuesday flights around early October.


When to Fly to Kaunas

Flying from Seattle, WA (SEA) to Kaunas (KUN) will usually cost between $1444 to $3455 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early October with an average ticket price of $1613. Due to high demand the most expensive time to fly is mid December, with an average price of $4249. Planning your trip to low-cost times can easily save you $2636 on economy flights and even more on first-class flights. Generally, any price below $2444 can be considered a good price for a round-trip SEA to KUN flight.

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

SEA to KUN Flight Prices

Compared to other flights, the SEA to KUN flight is more expensive than the average and costs more than the average flight leaving from Seattle. The average price per mile (for a direct flight) is $0.3, which is in the normal range for a flight.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly to Kaunas, and Fridays are the most expensive days to return to Seattle. Selecting flights on the least expensive days could save you up to $499 (14%) 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 $2239. Return trip prices are from the KUN 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 KUN can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 10 hour 9 minutes may not 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 not usually a nonstop flight from SEA to KUN while comparing.

Destination alternative #1: Riga International Airport (RIX) in Riga

  • 135 miles (217 km) away from KUN
  • Usually 67.88% less expensive than KUN
  • 1-layover flights available

See SEA to RIX flights

Destination alternative #2: Vilnius International Airport (VNO) in Vilnius

  • 53 miles (85 km) away from KUN
  • Usually 62.85% less expensive than KUN
  • 1-layover flights available

See SEA to VNO flights

Destination alternative #3: Palanga International Airport (PLQ) in Palanga

  • 136 miles (219 km) away from KUN
  • Usually 47.91% less expensive than KUN
  • 2-layover flights available

See SEA to PLQ flights


Flight Hacking SEA to KUN

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 KUN — but Champion Traveler does!

Hack #1: Copenhagen (SEA > CPH > KUN)

  • Price for both tickets: $799
  • Average savings: $1646 (67.33%)

See SEA to CPH flights

Hack #2: Milan (SEA > MXP > KUN)

  • Price for both tickets: $1033
  • Average savings: $1411 (57.73%)

See SEA to MXP flights

Hack #3: Warsaw (SEA > WAW > KUN)

  • Price for both tickets: $1050
  • Average savings: $1394 (57.04%)

See SEA to WAW flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 12 major airlines flying this route most often: Air France, American, British Airways, Delta, Finnair, Iberia, KLM, LOT, Lufthansa, Singapore Airlines, United, Virgin Atlantic, and potentially more during busy seasons.

How far away is it from Kaunas International Airport to Seattle/Tacoma International Airport?

The distance between the two airports is roughly 5095 miles or 8200 kilometers.

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

The real-world flight time for a nonstop SEA to KUN flight is about 10 hour 9 minutes.

How many flights go between Seattle, WA and Kaunas?

It depends on the day of the week and the date, but a typical day might have around 12 available flights from SEA to KUN.


Airport Location Info


Departing Airport

Origination codeSEA
Origination airport nameSeattle/Tacoma International Airport
CitySeattle, WA
Countrythe United States

Return Airport

Destination codeKUN
Destination airport nameKaunas International Airport


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.