The cheapest times to fly from SEA to KHH are

  • January 8th to March 18th (except the weeks of January 15th and January 29th)
  • April 16th to May 20th (except the week of April 30th)
  • August 27th to December 2nd

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 KHH is mid May. Prices can be as high as $1612 for Saturday flights during mid December, or as low as $762 for Tuesday flights around mid May.


When to Fly to Kaohsiung City

Flying from Seattle, WA (SEA) to Kaohsiung (KHH) will usually cost between $775 to $1272 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid May with an average ticket price of $801. Due to high demand the most expensive time to fly is mid December, with an average price of $1436. Planning your trip to low-cost times can easily save you $636 on economy flights and even more on first-class flights. Generally, any price below $914 can be considered a good price for a round-trip SEA to KHH flight.

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

SEA to KHH Flight Prices

Compared to other flights, the SEA to KHH flight is priced close to the average and costs less than the average flight leaving from Seattle. The average price per mile (for a direct flight) is $0.09, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to fly to KHH, and Sunday the cheapest day to fly back into SEA. Saturdays are the most expensive days to fly to Kaohsiung City, and Mondays are the most expensive days to return to Seattle. Selecting flights on the least expensive days could save you up to $112 (11%) 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 $903. Return trip prices are from the KHH 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 KHH can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 12 hour 12 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 KHH while comparing.

Destination alternative #1: Taichung Ching Chuan Kang Airport (RMQ) in Taichung

  • 118 miles (190 km) away from KHH
  • Usually 5.91% less expensive than KHH
  • 1-layover flights available

See SEA to RMQ flights


Flight Hacking SEA to KHH

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 KHH — but Champion Traveler does!

Hack #1: Shanghai (SEA > PVG > KHH)

  • Price for both tickets: $865
  • Average savings: $49 (5.36%)

See SEA to PVG flights

Hack #2: Hong Kong (SEA > HKG > KHH)

  • Price for both tickets: $869
  • Average savings: $45 (4.92%)

See SEA to HKG flights

Hack #3: Ho Chi Minh City (SEA > SGN > KHH)

  • Price for both tickets: $887
  • Average savings: $28 (3.01%)

See SEA to SGN flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 23 major airlines flying this route most often: Air Canada, Alaska, American, ANA, Asiana, Cathay Dragon, Cathay Pacific, China Airlines, China Eastern, China Southern, Delta, EVA Air, Hainan, Hawaiian, JAL, Korean Air, Lufthansa, Singapore Airlines, SWISS, United, Vietnam Airlines, WestJet, Xiamen, and potentially more during busy seasons.

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

The distance between the two airports is roughly 6233 miles or 10031 kilometers.

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

The real-world flight time for a nonstop SEA to KHH flight is about 12 hour 12 minutes.

How many flights go between Seattle, WA and Kaohsiung?

It depends on the day of the week and the date, but a typical day might have around 44 available flights from SEA to KHH.


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 KHH
Destination airport name Kaohsiung International Airport
City Kaohsiung
Country Taiwan
Latitude 22.6
Longitude 120.4


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.