Cheap flights from London to Koh Samui

LON — USM
30 May — 6 Jun1
Return
1 adult
Economy
From?
To?
Mon 30/5
Mon 6/6

The best prices from London to Ko Samui are usually found in May or September, booked 13 days in advance, depart on a Monday or Wednesday and return on a Monday

How to find the cheapest flight from London to Koh Samui

All the information you need to plan the best LON to USM flight in 2022: compare London to Koh Samui flight prices with the expected peak season, weather and rainfall in Koh Samui.

LON - USM

Price

£784 - £1,349

USM

Temperature

27 - 29 °C

USM

Rainfall

58 - 490 mm

Popular inDecemberHigh demand for flights, 33% potential price rise
Cheapest inMayBest time to find cheap flights, 13% potential price drop
Round-trip from£625From London (LON) to Ko Samui
One-way from£400One-way flight from London (LON) to Ko Samui

What is the cheapest day to fly round-trip from London to Koh Samui?

Sunday is generally a great day to depart. Flying on this day could help you save up to 7%.

What is the cheapest month to fly from London to Koh Samui?

May can be a great time to fly to Koh Samui from London with a flight ticket averaging about £719. Cheapflights users have found deals in the month of May for as cheap as £554. The most expensive prices can be found in the month of December.

When is the cheapest time to fly from London to Koh Samui (LON - USM)?

It’s optimal to fly from London to Koh Samui in the afternoon. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight in the morning.

Cheap flights from London to Koh Samui in May, June 2022

The best prices found for LON to USM flights in May, June
27 Jun - 8 Jul
LHR

London Heathrow

USM

Ko Samui

2 stops

27h 50m
USM

Ko Samui

LHR

London Heathrow

2 stops

25h 55m
£730

Multiple Airlines

View Deal

Deal found 23/5/22

14 Jun - 23 Jun
LHR

London Heathrow

USM

Ko Samui

3 stops

28h 30m
USM

Ko Samui

LHR

London Heathrow

2 stops

26h 50m
£739

Multiple Airlines

View Deal

Deal found 25/5/22

27 Jun - 8 Jul
LHR

London Heathrow

USM

Ko Samui

2 stops

27h 50m
USM

Ko Samui

LHR

London Heathrow

3 stops

28h 55m
£742

Multiple Airlines

View Deal

Deal found 24/5/22

London to Koh Samui 2022 flight deals

Cheap flights to Koh Samui from London found for this year
11 Sep - 23 Dec
LHR

London Heathrow

USM

Ko Samui

2 stops

21h 45m
USM

Ko Samui

LHR

London Heathrow

2 stops

27h 30m
£490

Multiple Airlines

View Deal

Deal found 23/5/22

26 Sep - 3 Oct
LHR

London Heathrow

USM

Ko Samui

2 stops

26h 50m
USM

Ko Samui

LHR

London Heathrow

2 stops

28h 55m
£492

Multiple Airlines

View Deal

Deal found 23/5/22

11 Sep - 23 Dec
LHR

London Heathrow

USM

Ko Samui

2 stops

26h 50m
USM

Ko Samui

LHR

London Heathrow

3 stops

32h 50m
£494

Multiple Airlines

View Deal

Deal found 23/5/22

Cheap Etihad Airways flights from London to Koh Samui

4 Sep - 22 Sep
LHR

London Heathrow

USM

Ko Samui

2 stops

35h 35m
USM

Ko Samui

LHR

London Heathrow

3 stops

36h 20m
£689

Etihad Airways

View Deal

Deal found 23/5/22

12 Sep - 29 Sep
LHR

London Heathrow

USM

Ko Samui

3 stops

26h 05m
USM

Ko Samui

LHR

London Heathrow

3 stops

36h 20m
£690

Etihad Airways

View Deal

Deal found 25/5/22

16 Aug - 27 Sep
LHR

London Heathrow

USM

Ko Samui

2 stops

32h 20m
USM

Ko Samui

LHR

London Heathrow

3 stops

36h 20m
£691

Etihad Airways

View Deal

Deal found 25/5/22

Cheap Emirates flights from London to Koh Samui

26 Sep - 3 Oct
STN

London Stansted

USM

Ko Samui

2 stops

29h 25m
USM

Ko Samui

STN

London Stansted

2 stops

23h 50m
£722

Emirates

View Deal

Deal found 23/5/22

20 Sep - 29 Sep
STN

London Stansted

USM

Ko Samui

2 stops

30h 05m
USM

Ko Samui

STN

London Stansted

2 stops

24h 00m
£729

Emirates

View Deal

Deal found 24/5/22

12 Sep - 29 Sep
STN

London Stansted

USM

Ko Samui

2 stops

39h 40m
USM

Ko Samui

STN

London Stansted

2 stops

23h 10m
£750

Emirates

View Deal

Deal found 25/5/22

Last-minute flights from London to Koh Samui

Late deals on return flights to Koh Samui from London, departing today and this week
1 Jun - 14 Jun
LHR

London Heathrow

USM

Ko Samui

3 stops

41h 05m
USM

Ko Samui

LHR

London Heathrow

3 stops

30h 40m
£743

Etihad Airways

View Deal

Deal found 24/5/22

1 Jun - 14 Jun
LHR

London Heathrow

USM

Ko Samui

2 stops

36h 45m
USM

Ko Samui

LHR

London Heathrow

3 stops

30h 40m
£773

Etihad Airways

View Deal

Deal found 25/5/22

3 Jun - 17 Jun
LHR

London Heathrow

USM

Ko Samui

3 stops

36h 55m
USM

Ko Samui

LHR

London Heathrow

3 stops

35h 10m
£834

Emirates

View Deal

Deal found 25/5/22

One-way flights to Ko Samui from London

The cheapest one-way flights from London to Koh Samui
13 Jun
LGW

London Gatwick

USM

Ko Samui

3 stops

42h 55m
£292

Multiple Airlines

View Deal

Deal found 22/5/22

24 Aug
LHR

London Heathrow

USM

Ko Samui

3 stops

33h 25m
£337

Multiple Airlines

View Deal

Deal found 25/5/22

15 Aug
LHR

London Heathrow

USM

Ko Samui

3 stops

35h 00m
£338

Multiple Airlines

View Deal

Deal found 23/5/22

Related info for your journey

Useful info, stats and facts about London to Koh Samui flights.

What airport do you fly into for flights to Koh Samui from London?

Most people fly into Ko Samui (USM) if they book a flight to Koh Samui from London. On average, Ko Samui has 0 inbound flights from London per day from 13 airlines. Ko Samui is conveniently located just 2.1 mi from Koh Samui’s city center.

Which airlines flying from London to Ko Samui have flexible cancellations due to COVID-19?

Thai Airways, Cathay Pacific, and EVA Air are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from London to Koh Samui for under £500 on Cheapflights?

Yes, there are multiple flights from London to Koh Samui for under £500. The cheapest flight booked recently is on Multiple Airlines for just £490, but on average you can expect to pay £562.

Are there last-minute flights available from London to Koh Samui for under £800?

There are currently 14+ open flights from London to Koh Samui within the next 7 days for less than £800.

What are the most popular routes from London to Koh Samui?

The most popular route from London to Koh Samui is London Heathrow - Ko Samui. You may also consider London Gatwick - Ko Samui or London City - Ko Samui.

What are the most popular airlines that fly from London to Koh Samui?

The most popular airlines flying from London to Koh Samui are Air France, Finnair and British Airways. Something to consider prior to booking your flight.

What are the cheapest flights from London to Koh Samui?

Looking for the cheapest flight from London to Koh Samui? While on average our users pay £1,409, our data indicates the cheapest price to be £665. The most popular route (London Heathrow - Ko Samui), is priced around £490.

Alternative routes for London to Koh Samui

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from London to Koh Samui

The chart below displays the airlines Cheapflights users travelling from London to Koh Samui choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Bangkok AirwaysCheapest£104Average£139FlexibilityNo cancel feeOn-time74%COVID-19 safety
Search Bangkok Airways flights
FinnairCheapest£461Average£614FlexibilityNo cancel feeOn-time76%COVID-19 safety
Search Finnair flights
KLMCheapest£474Average£558FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search KLM flights
Etihad AirwaysCheapest£526Average£666FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search Etihad Airways flights
Qantas AirwaysCheapest£573Average£802FlexibilityNo cancel feeOn-time74%COVID-19 safety
Search Qantas Airways flights