Q: What is the typical price of a round-trip flight between London Heathrow Airport and Ko Samui?

Prices are currently low for flights on this route. Typical prices usually range from £791 to £972. The lowest price recently found on this route was £730.

Question 1

How often are flights from London to Ko Samui delayed?

Accepted Answer

Historically, on average around 9% of flights between London and Ko Samui have experienced a delay on any given week. The average delay length over the past 12 months has been 154 minutes.

Question 2

How have London Heathrow Airport to Ko Samui flight prices changed over time?

Accepted Answer

As of February 2026, prices for London Heathrow Airport to Ko Samui flights are approximately 83% more expensive when compared to flights at the same time last year.

Question 3

Which airport is the most popular for stopovers for flights between London Heathrow Airport and Ko Samui?

Accepted Answer

Bangkok (BKK) was the most common stop: 77% of momondo users choosing one-stop flights on this route connected there.

Question 4

What is the most punctual flight time for London to Ko Samui flights?

Accepted Answer

Generally, flights departing in the evening tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Question 5

What is the typical price of a round-trip flight between London Heathrow Airport and Ko Samui?

Accepted Answer

Prices are currently low for flights on this route.Typical prices usually range from £791 to £972.
The lowest price recently found on this route was £730.

Question 6

What is the cheapest month to fly to Ko Samui?

Accepted Answer

The cheapest month to fly to Ko Samui from London Heathrow Airport is in May. Flight prices, which tend to average around £776, are often lower during this time because this is during the off-season. If you don’t want to visit Ko Samui in May, then you should wait until November to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £798.

Question 7

How far in advance should I book a flight to Ko Samui?

Accepted Answer

You are more likely to see cheaper flights to Ko Samui from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Ko Samui for around £891 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ko Samui from London Heathrow Airport for as low as £766 on momondo.

Question 8

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Saturday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Question 9

Which airline has the best punctuality record on London to Ko Samui flights?

Accepted Answer

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 4% of their flights experiencing any sort of delay.

Question 10

What is the cheapest day to depart on your flight to Ko Samui?

Accepted Answer

According to our data, Wednesday is the cheapest day to fly to Ko Samui from London Heathrow Airport. The lowest ticket price found for a Wednesday departure recently was £486. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Ko Samui on Sunday is £830.

Question 11

Which stopover airport offers the lowest fares from London Heathrow Airport to Ko Samui?

Accepted Answer

Flights via Hong Kong (HKG) offer the lowest average return price of £810.

Question 12

Which stopover airport has the shortest travel time from London Heathrow Airport to Ko Samui?

Accepted Answer

Flights connecting via Kuwait City (KWI) have the shortest average one-way travel time: 15h 20m.

Question 13

Which airlines fly to Ko Samui?

Accepted Answer

EVA Air, Thai Airways and Singapore Airlines are the top three most popular airlines that fly to Ko Samui from London Heathrow Airport according to our data. EVA Air is the first choice among our users, with 43% of people opting to fly with this airline when travelling to Ko Samui. Keep in mind that there are 13 different airlines that fly to Ko Samui on a routine basis, so you have a few additional options to choose from.

Question 14

Which stopover airport has the shortest connection time from London Heathrow Airport to Ko Samui?

Accepted Answer

Bangkok (BKK) has the shortest average stopover time for this route: 2h 49m.

Question 15

What is the cheapest time of day to depart on your flight to Ko Samui?

Accepted Answer

Our most recent data shows that the best time of day to fly to Ko Samui is in the afternoon. Flights from London Heathrow Airport to Ko Samui during this time can be as low as £493. Flights at midday are often more expensive, with an average ticket price of £801.

Question 16

When did momondo last update prices for flights from London Heathrow Airport to Ko Samui Airport?

Accepted Answer

Prices for flights from London Heathrow Airport to Ko Samui Airport were last updated today.

Question 17

How many operators does momondo search for flights from London Heathrow Airport to Ko Samui Airport?

Accepted Answer

As of February 2026, there are 13 operators available to choose from for flights from London Heathrow Airport to Ko Samui Airport.

Question 18

How old do you have to be to fly from London Heathrow Airport to Ko Samui Airport?

Accepted Answer

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 from London Heathrow Airport to Ko Samui Airport.

Question 19

What documentation or ID do you need to fly to Ko Samui Airport?

Accepted Answer

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.

Fastest flight time	17h 25m
Direct flights	None

Airline	Rating	Free Cancellation	Price
Bangkok Airways	PriceFrom £112	Free Cancellation	Rating 8.0 121 reviews	Search Bangkok Airways flights
Air India	PriceFrom £428	Free Cancellation	Rating 5.5 2,972 reviews	Search Air India flights
Etihad Airways	PriceFrom £434	Free Cancellation	Rating 7.3 1,387 reviews	Search Etihad Airways flights
Austrian Airlines	PriceFrom £592	Free Cancellation	Rating 7.5 896 reviews	Search Austrian Airlines flights
Lufthansa	PriceFrom £594	Free Cancellation	Rating 6.8 7,769 reviews	Search Lufthansa flights
SWISS	PriceFrom £598	Free Cancellation	Rating 7.6 1,867 reviews	Search SWISS flights
KLM	PriceFrom £626	Free Cancellation	Rating 7.7 1,450 reviews	Search KLM flights
Air France	PriceFrom £651	Free Cancellation	Rating 7.4 1,531 reviews	Search Air France flights
EVA Air	PriceFrom £718	Free Cancellation	Rating 8.4 1,347 reviews	Search EVA Air flights
British Airways	PriceFrom £720	Free Cancellation	Rating 6.7 7,719 reviews	Search British Airways flights

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How to get the cheapest flight ticket from London Heathrow Airport to Ko Samui

What is the typical price of a round-trip flight between London Heathrow Airport and Ko Samui?

What is the cheapest month to fly to Ko Samui?

What is the cheapest day to depart on your flight to Ko Samui?

What is the cheapest time of day to depart on your flight to Ko Samui?

Our most recent data shows that the best time of day to fly to Ko Samui is in the afternoon. Flights from London Heathrow Airport to Ko Samui during this time can be as low as £493. Flights at midday are often more expensive, with an average ticket price of £801.

How far in advance should I book a flight to Ko Samui?

How have London Heathrow Airport to Ko Samui flight prices changed over time?

As of February 2026, prices for London Heathrow Airport to Ko Samui flights are approximately 83% more expensive when compared to flights at the same time last year.

Which airlines fly to Ko Samui?

How often are flights from London to Ko Samui delayed?

Historically, on average around 9% of flights between London and Ko Samui have experienced a delay on any given week. The average delay length over the past 12 months has been 154 minutes.

What is the most punctual flight time for London to Ko Samui flights?

Generally, flights departing in the evening tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on London to Ko Samui flights?

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 4% of their flights experiencing any sort of delay.

Which airport is the most popular for stopovers for flights between London Heathrow Airport and Ko Samui?

Bangkok (BKK) was the most common stop: 77% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport offers the lowest fares from London Heathrow Airport to Ko Samui?

Flights via Hong Kong (HKG) offer the lowest average return price of £810.

Which stopover airport has the shortest travel time from London Heathrow Airport to Ko Samui?

Flights connecting via Kuwait City (KWI) have the shortest average one-way travel time: 15h 20m.

Which stopover airport has the shortest connection time from London Heathrow Airport to Ko Samui?

Bangkok (BKK) has the shortest average stopover time for this route: 2h 49m.

When to book flights from London Heathrow Airport to Ko Samui

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How far is London Heathrow to Ko Samui by plane?

When did momondo last update prices for flights from London Heathrow Airport to Ko Samui Airport?

How many operators does momondo search for flights from London Heathrow Airport to Ko Samui Airport?

How old do you have to be to fly from London Heathrow Airport to Ko Samui Airport?

What documentation or ID do you need to fly to Ko Samui Airport?

What is the most popular airline from London Heathrow Airport to Ko Samui?

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