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Fly from
Route
Depart
Return
LondonKo Samui
LGW - USM
LGWUSM
London Gatwick
Thu 4/9
05:45-20:25
3 stops32h 40m
Ko Samui
Wed 29/10
07:00-18:30
1 stop18h 30m
LondonKo Samui
LGW - USM
LGWUSM
London Gatwick
Sat 22/11
10:30-20:25
2 stops26h 55m
Ko Samui
Sat 6/12
07:00-14:00
2 stops38h 00m
LondonKo Samui
LHR - USM
LHRUSM
London Heathrow
Fri 12/9
19:30-17:45
2 stops16h 15m
Ko Samui
Sun 28/9
19:30-09:00
2 stops19h 30m
LondonKo Samui
LHR - USM
LHRUSM
London Heathrow
Mon 17/11
18:40-21:05
2 stops19h 25m
Ko Samui
Mon 24/11
09:20-21:40
2 stops19h 20m
LondonKo Samui
LHR - USM
LHRUSM
London Heathrow
Thu 30/10
09:00-21:05
2 stops29h 05m
Ko Samui
Mon 3/11
09:20-17:50
2 stops39h 30m
LondonKo Samui
LHR - USM
LHRUSM
London Heathrow
Sun 28/9
17:10-18:15
2 stops19h 05m
Ko Samui
Fri 17/10
08:00-20:55
2 stops18h 55m
LondonKo Samui
LHR - USM
LHRUSM
London Heathrow
Tue 21/10
17:10-18:15
2 stops19h 05m
Ko Samui
Mon 27/10
07:00-20:50
2 stops20h 50m
LondonKo Samui
LGW - USM
LGWUSM
London Gatwick
Thu 11/9
14:55-10:30
2 stops37h 35m
Ko Samui
Thu 18/9
17:55-06:40
2 stops18h 45m
LondonKo Samui
LGW - USM
LGWUSM
London Gatwick
Thu 18/9
14:55-10:30
2 stops37h 35m
Ko Samui
Sat 27/9
08:00-06:40
2 stops28h 40m
LondonKo Samui
LGW - USM
LGWUSM
London Gatwick
Mon 17/11
09:20-10:50
1 stop18h 30m
Ko Samui
Mon 24/11
19:25-06:25
1 stop18h 00m
| CHEAPEST MONTH TO FLY TO KO SAMUI FROM LONDON HEATHROW AIRPORT | September | 14% cheaper | Flying from London Heathrow Airport to Ko Samui costs on average just £792 in September |
| MOST EXPENSIVE MONTH TO FLY TO KO SAMUI FROM LONDON HEATHROW AIRPORT | December | 36% more expensive | It costs about £1,255 for flights to Ko Samui from London Heathrow Airport in December |
| MOST POPULAR MONTH TO FLY TO KO SAMUI FROM LONDON HEATHROW AIRPORT | March | 383% more users visited | More momondo users searched in flights to Ko Samui from London Heathrow Airport in March than any other month |
Best One-Way Price | £307 |
|---|---|
Best Round-Trip Price | £571 |
Fastest flight time | 18h 35m |
Popular in | December |
When planning your flight to Ko Samui, it is important to be aware that some months are not as ideal as others. Specifically, the months of January, May, or October could carry a higher chance of rain, as Ko Samui sees up to 5.1 inches (130 mm) or more. There are still things to do in Ko Samui even when it's raining, but be aware that rain is highly probable in the area. Many tourists kill time during rain and storms by going to shopping centres in the area, like Fishermans Village.
Visitors planning their holidays in Ko Samui should book their flights for February, March, or April if they are planning on visiting Lamai Beach. Another popular beach in the area is Chaweng Beach.
Most flyers found that booking tickets 80 days in advance of their planned departure date is the best time to get cheap flights to Ko Samui. During this timeframe, flight prices are around £934. Keep in mind that you might also find cheap flights to Ko Samui outside of this time window. In fact, momondo users recently found flights from United Kingdom to Ko Samui for £780.
Finding an alternative and possibly cheaper destination airport near Ko Samui is possible. If you are planning a flight to Ko Samui, consider booking flights to Surat Thani Airport (67 mi from Ko Samui city centre), Nakhon Si Thammarat Airport (73 mi from Ko Samui city centre) or Chumphon Airport (95 mi from Ko Samui city centre).
Prices vary based on where travellers are departing from, but on average, the cheapest airport to fly to in Ko Samui is Chumphon Airport where the average price is £25. Users typically find the best prices when using momondo’s Airport-to-Airport Pricing Tool.
Users booking trips to Ko Samui from Bangkok found flights 48% cheaper than the average price of flights to Ko Samui. To find the cheapest price to Ko Samui from your area, use momondo’s Airport-to-Airport Pricing Tool.
Prices for flights to Ko Samui Airport refresh daily.
As of July 2025, there are 17 operators available to choose from for flights to Ko Samui Airport.
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel to Ko Samui Airport.
The required travel and health documents for your Ko Samui Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ko Samui Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
Finding the right flight to Ko Samui is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. These options can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ko Samui quick and easy, saving you time and money.
momondo does allow users to show only those flights to Ko Samui which offer a flexible booking policy as well as other useful filters and features.
momondo provides multiple filters to help you find the best flight to Ko Samui. Filter by price, airline, airport, cabin, aircraft, payment method, number of stops and more.
Price alerts on flights to Ko Samui are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.