Our cheapest offers for flights from London to Koh Samui

Here you can compare cheap flights from London (LON) to Koh Samui (USM) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Koh Samui. Prices and availability may change at any time.

	Outbound	Return	Airlines	Baggage	Price
London Koh Samui	Outbound 08/12/25 2 Stopovers (MUC, BKK) LH2477, LH0772, LH4632 20h 45min	Return 24/12/25 2 Stopovers (BKK, MUC) LH4643, LH0773, LH2476 26h 30min	Lufthansa		£762
London Koh Samui	Outbound 08/12/25 2 Stopovers (MUC, BKK) LH2477, LH0772, LH4632 20h 45min	Return 24/12/25 2 Stopovers (BKK, MUC) LH4623, LH0773, LH2472 20h 55min	Lufthansa		£786
London Koh Samui	Outbound 08/12/25 2 Stopovers (MUC, BKK) LH2477, LH0772, LH4632 20h 45min	Return 24/12/25 2 Stopovers (BKK, VIE) OS8652, OS0008, OS0335 24h 35min	Lufthansa	?	£837
London Koh Samui	Outbound 09/12/25 2 Stopovers (MUC, BKK) LH4197, LH0772, LH4628 16h 50min	Return 01/01/26 2 Stopovers (BKK, VIE) OS8670, OS0006, OS0339 18h 40min	Lufthansa	?	£1,046
London Koh Samui	Outbound 11/12/25 2 Stopovers (FRA, SIN) LH0907, LH0780, PG0962 24h 35min	Return 02/01/26 2 Stopovers (BKK, MUC) PG0178, LH0773, LH4192 18h 35min	Lufthansa, Bangkok Airways		£1,292

Important flight information

Flight information: London - Koh Samui

Outbound and return from	749,30 £
Distance	9886 km
Departure airport	Airport London (LCY, LGW, LHR, LTN, STN, SEN) (LON)
Arrival airport	Airport Koh Samui (USM)
Destination country	Flights to Thailand

Our cheapest offers for flights from London to Koh Samui

London (LCY, LGW, LHR, LTN, STN, SEN)

Koh Samui

Lufthansa

Important flight information

Flight information: London - Koh Samui

Alternative routes to Thailand

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