The cheapest times to fly from REP to PUS are

  • February 19th to March 18th (except the week of February 26th)
  • May 7th to May 27th
  • July 30th to December 23rd (except the week of September 10th)

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 PUS is mid May. Prices can be as high as $559 for Friday flights during late June, or as low as $221 for Tuesday flights around mid May.


When to Fly to Busan

Flying from Siem Reap (REP) to Busan (PUS) will usually cost between $272 to $559 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 $221. Due to high demand the most expensive time to fly is late June, with an average price of $527. Planning your trip to low-cost times can easily save you $306 on economy flights and even more on first-class flights. Generally, any price below $381 can be considered a good price for a round-trip REP to PUS flight.

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

REP to PUS Flight Prices

Compared to other flights, the REP to PUS flight is much cheaper than the average and costs much less than the average flight leaving from Krong Siem Reap. The average price per mile (for a direct flight) is $0.11, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Fridays are the most expensive days to fly to Busan, and Saturdays are the most expensive days to return to Krong Siem Reap. Selecting flights on the least expensive days could save you up to $13 (3%) 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 $375. Return trip prices are from the PUS 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 PUS can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 4 hour 53 minutes may be realistic.


Flight Questions Answered

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

Which airlines fly this route?

You can find 23 major airlines flying this route most often: Air Busan, AirAsia, AirAsia X, Asiana, Bangkok Airways, Cambodia Airways, Cambodia Angkor Air, Cathay Dragon, Cathay Pacific, China Eastern, China Southern, Hong Kong Express, JAL, JC (Cambodia) International, Jeju Air, Jin Air, Qantas, Singapore Airlines, T’Way Air, THAI, Thai AirAsia, VietJet Air, Vietnam Airlines, and potentially more during busy seasons.

How far away is it from Gimhae International Airport to Siem Reap International Airport?

The distance between the two airports is roughly 2170 miles or 3492 kilometers.

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

The real-world flight time for a nonstop REP to PUS flight is about 4 hour 53 minutes.

How many flights go between Siem Reap and Busan?

It depends on the day of the week and the date, but a typical day might have around 25 available flights from REP to PUS.


Airport Location Info


Departing Airport

Origination codeREP
Origination airport nameSiem Reap International Airport
CitySiem Reap

Return Airport

Destination codePUS
Destination airport nameGimhae International Airport
CountrySouth Korea


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.