The cheapest times to fly from KHH to SEA are

  • February 5th to March 11th
  • March 26th to June 17th (except the weeks of April 9th, April 23rd, May 14th, and June 4th)
  • October 8th 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 KHH to SEA is early to mid October. Prices can be as high as $1587 for Monday flights during early January, or as low as $600 for Sunday flights around early to mid October.


When to Fly to Seattle

Flying from Kaohsiung (KHH) to Seattle, WA (SEA) will usually cost between $617 to $1183 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid October with an average ticket price of $617. Due to high demand the most expensive time to fly is early January, with an average price of $1444. Planning your trip to low-cost times can easily save you $827 on economy flights and even more on first-class flights. Generally, any price below $794 can be considered a good price for a round-trip KHH to SEA flight.

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

KHH to SEA Flight Prices

Compared to other flights, the KHH to SEA flight is cheaper than the average and costs less than the average flight leaving from Kaohsiung City. The average price per mile (for a direct flight) is $0.08, which is far below average.


Flight Prices by Day of the Week

Sunday is usually the cheapest day to fly to SEA, and Tuesday the cheapest day to fly back into KHH. Mondays are the most expensive days to fly to Seattle, and Saturdays are the most expensive days to return to Kaohsiung City. 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 Sunday and returning a week later will cost an average of $804. Return trip prices are from the SEA to KHH 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 KHH 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 12 hour 12 minutes may not be realistic.


Flight Questions Answered

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

Which airlines fly this route?

You can find 26 major airlines flying this route most often: Air Canada, Air France, Alaska, American, ANA, Asiana, Austrian, Cathay Dragon, Cathay Pacific, China Airlines, China Eastern, China Southern, Delta, EVA Air, Hainan, Hawaiian, JAL, KLM, Korean Air, Lufthansa, Singapore Airlines, SWISS, United, Vietnam Airlines, WestJet, Xiamen, and potentially more during busy seasons.

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

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

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

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

How many flights go between Kaohsiung and Seattle, WA?

It depends on the day of the week and the date, but a typical day might have around 47 available flights from KHH to SEA.


Airport Location Info


Departing Airport

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

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.