The cheapest times to fly from ATL to USM are

  • March 5th to June 3rd (except the week of April 2nd)
  • July 9th to October 21st (except the week of July 16th)

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 ATL to USM is early to mid May. Prices can be as high as $10161 for Friday flights during mid December, or as low as $1254 for Monday flights around early to mid May.


When to Fly to Ko Samui

Flying from Atlanta, GA (ATL) to Koh Samui (USM) will usually cost between $1314 to $4362 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 $1359. Due to high demand the most expensive time to fly is mid December, with an average price of $6314. Planning your trip to low-cost times can easily save you $4955 on economy flights and even more on first-class flights. Generally, any price below $1737 can be considered a good price for a round-trip ATL to USM flight.

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

ATL to USM Flight Prices

Compared to other flights, the ATL to USM flight is more expensive than the average and costs more than the average flight leaving from Atlanta. The average price per mile (for a direct flight) is $0.11, which is far below average.


Flight Prices by Day of the Week

Monday is usually the cheapest day to fly to USM, and Tuesday the cheapest day to fly back into ATL. Fridays 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 $721 (24%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Monday and returning a week later will cost an average of $1674. Return trip prices are from the USM to ATL 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 ATL to USM can generally find a 2-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 17 hour 58 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 ATL to USM while comparing.

Destination alternative #1: Krabi Airport (KBV) in Krabi

  • 124 miles (200 km) away from USM
  • Usually 14.77% less expensive than USM
  • 1-layover flights available

See ATL to KBV flights


Flight Hacking ATL to USM

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 ATL to USM — but Champion Traveler does!

Hack #1: Bangkok (ATL > BKK > USM)

  • Price for both tickets: $1300
  • Average savings: $437 (25.16%)

See ATL to BKK flights

Hack #2: Houston, TX (ATL > IAH > USM)

  • Price for both tickets: $1338
  • Average savings: $399 (22.97%)

See ATL to IAH flights

Hack #3: Singapore (ATL > SIN > USM)

  • Price for both tickets: $1354
  • Average savings: $384 (22.08%)

See ATL to SIN flights


Flight Questions Answered

Still have questions about flying from ATL to USM? We’ve got answers.

Which airlines fly this route?

You can find 19 major airlines flying this route most often: Air France, American, ANA, Bangkok Airways, British Airways, Cathay Pacific, China Southern, Delta, Emirates, Etihad, Finnair, Kenya Airways, KLM, Lufthansa, Qantas, Qatar Airways, Singapore Airlines, THAI, United, and potentially more during busy seasons.

How far away is it from Samui Airport to Hartsfield-Jackson Atlanta International Airport?

The distance between the two airports is roughly 9437 miles or 15187 kilometers.

How long does it take to fly from ATL to USM?

The real-world flight time for a nonstop ATL to USM flight is about 17 hour 58 minutes.

How many flights go between Atlanta, GA and Koh Samui?

It depends on the day of the week and the date, but a typical day might have around 14 available flights from ATL to USM.


Airport Location Info


Departing Airport

Origination code ATL
Origination airport name Hartsfield-Jackson Atlanta International Airport
City Atlanta, GA
Country the United States
Latitude 33.6
Longitude -84.4

Return Airport

Destination code USM
Destination airport name Samui Airport
City Koh Samui
Country Thailand
Latitude 9.5
Longitude 100.1


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.