The cheapest times to fly from REP to HOU are

  • October 8th to March 25th (except the weeks of October 15th, November 19th, and December 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 HOU is early August. Prices can be as high as $7062 for Tuesday flights during mid April, or as low as $1788 for Thursday flights around early August.


When to Fly to Houston

Flying from Siem Reap (REP) to Houston, TX (HOU) will usually cost between $1890 to $6981 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early August with an average ticket price of $1874. Due to high demand the most expensive time to fly is mid April, with an average price of $5785. Planning your trip to low-cost times can easily save you $3911 on economy flights and even more on first-class flights. Generally, any price below $3141 can be considered a good price for a round-trip REP to HOU flight.

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

REP to HOU Flight Prices

Compared to other flights, the REP to HOU 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 $0.21, which is below average.


Flight Prices by Day of the Week

Thursday is usually the cheapest day to depart and return on this flight. Tuesdays are the most expensive days to fly to Houston, and Fridays are the most expensive days to return to Krong Siem Reap. Selecting flights on the least expensive days could save you up to $1379 (29%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Thursday and returning a week later will cost an average of $2851. Return trip prices are from the HOU 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 HOU can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 17 hour 32 minutes may 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 a nonstop flight from REP to HOU while comparing.

Destination alternative #1: George Bush Intercontinental/Houston Airport (IAH) in Houston, TX

  • 24 miles (39 km) away from HOU
  • Usually 37.89% less expensive than HOU
  • 2-layover flights available

See REP to IAH flights


Flight Hacking REP to HOU

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 HOU — but Champion Traveler does!

Hack #1: Hong Kong (REP > HKG > HOU)

  • Price for both tickets: $984
  • Average savings: $2157 (68.67%)

See REP to LAX flights

Hack #2: Los Angeles, CA (REP > LAX > HOU)

  • Price for both tickets: $1217
  • Average savings: $1925 (61.27%)

See REP to HKG flights

Hack #3: Shanghai (REP > PVG > HOU)

  • Price for both tickets: $1256
  • Average savings: $1885 (60.01%)

See REP to PVG flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 10 major airlines flying this route most often: Air France, American, ANA, British Airways, China Southern, Delta, JAL, KLM, Vietnam Airlines, Xiamen, and potentially more during busy seasons.

How far away is it from William P Hobby Airport to Siem Reap International Airport?

The distance between the two airports is roughly 9200 miles or 14806 kilometers.

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

The real-world flight time for a nonstop REP to HOU flight is about 17 hour 32 minutes.

How many flights go between Siem Reap and Houston, TX?

It depends on the day of the week and the date, but a typical day might have around 7 available flights from REP to HOU.


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 HOU
Destination airport name William P Hobby Airport
City Houston, TX
Country the United States
Latitude 29.6
Longitude -95.3


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.