On this page, you can find and book flights from London to Koh Samui. This 9,881 km flight connects the UK's largest metropolis with one of Thailand's most popular resorts.
Flight prices change constantly, so we recommend using the low-fare calendar and price dynamics chart to find the best dates. You can also find out in advance how to get to the airport in London and how to arrange a transfer from Koh Samui Airport upon arrival.
Below is a calendar of the lowest flight ticket prices for London — Koh Samui by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $558 in ,, and the most expensive are around $1,004 in r. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.
London → Koh Samui, average one-way price
| Month | Average price | Level | Month | Average price | Level | Month | Average price | Level |
|---|---|---|---|---|---|---|---|---|
| Jan | $659 | high | May | $540 | low | Sep | $604 | medium |
| Feb | $601 | medium | Jun | $609 | medium | Oct | $547 | low |
| Mar | $550 | low | Jul | $673 | high | Nov | $544 | low |
| Apr | $528 | low | Aug | $595 | medium | Dec | $677 | high |
Some values are estimated based on seasonality.
The climate on Koh Samui is characterized by consistently high temperatures, peaking in May (around 29.8°C). The driest month is March, with only 31.44 mm of precipitation, while November is considered the rainiest period of the year.
The lowest flight prices are recorded in July, starting $580. The most expensive month to fly is December, when flight prices start $1,003.
The ideal time to book is March, which offers a comfortable blend of dry weather and moderate prices. We recommend avoiding trips in October and November due to the peak of the rainy season and high humidity.
Major international carriers, including Thai Airways, British Airways, and Singapore Airlines, operate on the route from London to Koh Samui. Most flight options involve one or two connections at major aviation hubs; you can find detailed information on flight frequency and travel times in the list below.
Flights London — Koh Samui depart from Heathrow Airport, London Gatwick Airport, Stansted Airport and London Luton Airport and arrive at Koh Samui Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.
The distance between the cities is 9,881 km. A direct flight would take about 12 hours, but with layovers, the total travel time usually ranges from 15 to 19 hours.
The bulk of the traffic is handled by Thai Airways, Qatar Airways, Emirates, and Etihad Airways. A current list of all available airlines is provided above on this page.
Currently, there are no scheduled direct flights on this route. All flight options include at least one connection, most often in Bangkok or Singapore.
The best deals are typically available with early booking. We recommend using the low-fare calendar on this page to find the cheapest dates.
All flights arrive at Samui International Airport (USM). You can research in advance how to get from the airport to your hotel.
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