The cheapest times to fly from REP to KOA are

  • February 5th to March 11th
  • May 7th to July 15th
  • November 5th to November 25th

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 REP to KOA is mid May. Prices can be as high as $6079 for Saturday flights during late December, or as low as $1802 for Wednesday flights around mid May.


When to Fly to Kailua-Kona

Flying from Siem Reap (REP) to Kona, HI (KOA) will usually cost between $2431 to $4743 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 $3193. Due to high demand the most expensive time to fly is late December, with an average price of $4721. Planning your trip to low-cost times can easily save you $1527 on economy flights and even more on first-class flights. Generally, any price below $3727 can be considered a good price for a round-trip REP to KOA flight.

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

REP to KOA Flight Prices

Compared to other flights, the REP to KOA flight is more expensive than the average and costs more than the average flight leaving from Krong Siem Reap. The average price per mile (for a direct flight) is $0.35, which is in the normal range for a flight.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to fly to KOA, and Monday the cheapest day to fly back into REP. Saturdays are the most expensive days to fly to Kailua-Kona, and Sundays are the most expensive days to return to Krong Siem Reap. Selecting flights on the least expensive days could save you up to $483 (12%) 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 $3352. Return trip prices are from the KOA to REP 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 REP to KOA can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 12 hour 46 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 REP to KOA while comparing.

Destination alternative #1: Hilo International Airport (ITO) in Hilo, HI

  • 65 miles (105 km) away from KOA
  • Usually 1.80% less expensive than KOA
  • 2-layover flights available

See REP to ITO flights


Flight Hacking REP to KOA

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 REP to KOA — but Champion Traveler does!

Hack #1: Busan (REP > PUS > KOA)

  • Price for both tickets: $1205
  • Average savings: $2523 (67.68%)

See REP to ICN flights

Hack #2: Seoul (REP > ICN > KOA)

  • Price for both tickets: $1210
  • Average savings: $2517 (67.53%)

See REP to PUS flights

Hack #3: Kuala Lumpur (REP > KUL > KOA)

  • Price for both tickets: $1301
  • Average savings: $2426 (65.09%)

See REP to KUL flights


Flight Questions Answered

Still have questions about flying from REP to KOA? We’ve got answers.

Which airlines fly this route?

You can find 8 major airlines flying this route most often: ANA, Bangkok Airways, China Eastern, China Southern, Hawaiian, JAL, Shenzhen, Vietnam Airlines, and potentially more during busy seasons.

How far away is it from Ellison Onizuka Kona International at Keahole Airport to Siem Reap International Airport?

The distance between the two airports is roughly 6546 miles or 10535 kilometers.

How long does it take to fly from REP to KOA?

The real-world flight time for a nonstop REP to KOA flight is about 12 hour 46 minutes.

How many flights go between Siem Reap and Kona, HI?

It depends on the day of the week and the date, but a typical day might have around 27 available flights from REP to KOA.


Airport Location Info


Departing Airport

Origination code REP
Origination airport name Siem Reap International Airport
City Siem Reap
Country Cambodia
Latitude 13.4
Longitude 103.8

Return Airport

Destination code KOA
Destination airport name Ellison Onizuka Kona International at Keahole Airport
City Kona, HI
Country the United States
Latitude 19.7
Longitude -156


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.