Flight Routes from London Heathrow to Koh Samui

Trip type

Our cheapest offers for flights from London Heathrow to Koh Samui

Here you can compare cheap flights from London Heathrow (LHR) 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.

Flight schedule from London Heathrow (LHR) to Koh Samui (USM)

Select a travel date in the flight schedule for the route from London Heathrow (LHR) to Koh Samui (USM) and compare affordable flight deals.

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Matching outbound flights2 of 2
fromto
dep.arr.
durationstopovers
  1. 12 – 18 October 2026
  2. 19 – 25 October 2026
  3. 26 Oct – 1 Nov 2026
    1. LHRUSM
      1 stopover
      1. Cathay Pacific Airways
    2. LHRUSM
      1 stopover
      1. EVA Airways

      Tips and tricks to help you find cheap flights from London Heathrow to Koh Samui

      Favourite airline: Etihad Airways
      61 % of bookings on this flight route are made with Etihad Airways, EVA Airways and Emirates.
      Etihad Airways
      29 %
      EVA Airways
      16 %
      Emirates
      16 %
      Favourite connection: via Abu Dhabi and Bangkok
      When booking flights from London Heathrow to Koh Samui 36 % of travellers prefer to fly via Abu Dhabi and Bangkok.
      Route
      bookings
      2 stopovers Abu Dhabi Bangkok Suvarnabhumi
      27h 25min, from 918 £
      36 %
      1 stopover Bangkok Suvarnabhumi
      18h 00min, from 1.005 £
      26 %
      2 stopovers Dubai Bangkok Suvarnabhumi
      31h 25min, from 1.191 £
      14 %

      Important flight information

      Frequently Asked Questions (FAQ)

      Flight information: London Heathrow - Koh Samui

      Outbound and return from 697,99 £
      Distance 9907 km
      Departure airport Airport London Heathrow (LHR)
      Arrival airport Airport Koh Samui (USM)
      Destination country Flights to Thailand
      City-Code - Arrival airport London - Koh Samui
      Departure airport - Destination country London Heathrow - Thailand
      Alternative routes to Thailand
      Alternative flights to Koh Samui
      Popular destinations for onward travel
      Flight destinations with a similar price