The cheapest times to fly from REP to LGB are

  • March 12th to June 24th (except the weeks of March 19th, April 23rd, and June 4th)
  • October 15th to November 11th (except the week of October 29th)
  • November 26th to January 14th (except the weeks of December 3rd and December 24th)

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 LGB is early to mid May. Prices can be as high as $6938 for Wednesday flights during early August, or as low as $1243 for Friday flights around early to mid May.


When to Fly to Long Beach

Flying from Siem Reap (REP) to Long Beach, CA (LGB) will usually cost between $1384 to $4571 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early to mid May with an average ticket price of $1920. Due to high demand the most expensive time to fly is early August, with an average price of $4088. Planning your trip to low-cost times can easily save you $2168 on economy flights and even more on first-class flights. Generally, any price below $2840 can be considered a good price for a round-trip REP to LGB flight.

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

REP to LGB Flight Prices

Compared to other flights, the REP to LGB 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 $0.22, which is below average.


Flight Prices by Day of the Week

Friday is usually the cheapest day to fly to LGB, and Thursday the cheapest day to fly back into REP. Wednesdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $1126 (34%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Friday and returning a week later will cost an average of $2379. Return trip prices are from the LGB 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 LGB can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 15 hour 40 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 LGB while comparing.

Destination alternative #1: Los Angeles International Airport (LAX) in Los Angeles, CA

  • 17 miles (27 km) away from LGB
  • Usually 69.26% less expensive than LGB
  • 1-layover flights available

See REP to LAX flights

Destination alternative #2: San Diego International Airport (SAN) in San Diego, CA

  • 93 miles (150 km) away from LGB
  • Usually 49.79% less expensive than LGB
  • 2-layover flights available

See REP to SAN flights

Destination alternative #3: John Wayne-Orange County Airport (SNA) in Santa Ana, CA

  • 19 miles (31 km) away from LGB
  • Usually 15.42% less expensive than LGB
  • 2-layover flights available

See REP to SNA flights


Flight Hacking REP to LGB

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 LGB — but Champion Traveler does!

Hack #1: San Francisco, CA (REP > SFO > LGB)

  • Price for both tickets: $1095
  • Average savings: $1745 (61.44%)

See REP to CSX flights

Hack #2: Changsha (REP > CSX > LGB)

  • Price for both tickets: $1177
  • Average savings: $1664 (58.57%)

See REP to SFO flights

Hack #3: Beijing (REP > PEK > LGB)

  • Price for both tickets: $1225
  • Average savings: $1616 (56.88%)

See REP to PEK flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 10 major airlines flying this route most often: American, ANA, Bangkok Airways, Cathay Pacific, China Southern, Delta, JAL, JetBlue, Vietnam Airlines, Xiamen, and potentially more during busy seasons.

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

The distance between the two airports is roughly 8162 miles or 13135 kilometers.

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

The real-world flight time for a nonstop REP to LGB flight is about 15 hour 40 minutes.

How many flights go between Siem Reap and Long Beach, CA?

It depends on the day of the week and the date, but a typical day might have around 9 available flights from REP to LGB.


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 LGB
Destination airport name Long Beach Airport
City Long Beach, CA
Country the United States
Latitude 33.8
Longitude -118.2


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.