How long is the flight from London to Ko Samui?

Departing from London to Ko Samui will take you 19h. The distance between London and Ko Samui is about 6138 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What are the cheapest airlines flying from London to Ko Samui round-trip?

According to our current data, Bangkok Airways (£117), Oman Air (£458), and Austrian Airlines (£586) offers the cheapest pricing from London to Ko Samui. Users have found that Bangkok Airways is 87% cheaper than the other options available to this destination.

In terms of precipitation, rainfall in Ko Samui ranges from 58.0 - 490.0 inches per month. November is typically the wettest month, when rainfall can reach 490.0 mm. February is typically the driest time to visit Ko Samui when rainfall is around 58.0 mm.

If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 27.0 C).

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

The most popular route from London to Ko 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 Ko Samui?

The most popular airlines flying from London to Ko Samui are Thai Airways, EVA Air and Singapore Airlines. Something to consider prior to booking your flight.

Where are the most common stopover locations when flying from London to Ko Samui?

The most popular stopover on flights from London to Ko Samui is Bangkok.

Where are the least popular stopover locations for London to Ko Samui flights?

London to Ko Samui flights have a stopover in Singapore the least frequently.

What are some popular things to do or see while on a stopover in Bangkok?

Pratunam, Siam Square, and Thailand Cultural Center are currently the most popular points of interest in Bangkok at the moment. Pratunam, Siam Square, and Thailand Cultural Center are located about 14.8 mi, 15.1 mi, and 13.1 mi, respectively from Bangkok Suvarnabhumi. Travellers in need of a car in Bangkok can hire one for about £18 per day.

What is the cheapest time of day to fly from LON to USM?

When flying from London to Ko Samui, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Most people fly into Ko Samui (USM) if they book a flight to Ko 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 Ko Samui’s city center.

Can I find deals for flights from London to Ko Samui that include hotel bookings?

Yes. In addition to deals on London to Ko Samui flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from London to Ko Samui?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Ko Samui.

Can I find deals for business class flights from London to Ko Samui?

Yes. Cheapflights offers flight deals from London to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£311+ Cheap Flights from London to Ko Samui

Cheap flight deals from London to Ko Samui

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from London to Ko Samui
Explore the most affordable flight options available from London to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 September 2026.

Sun 4/1005:40 -

3 stops26h 15m

Sun 11/1015:25 -

2 stops23h 20m

Deal found 4/9£693

Sun 4/1006:00 -

3 stops26h 40m

Sun 11/1015:25 -

3 stops24h 25m

Deal found 4/9£693

Mon 9/1119:25 -

2 stops17h 25m

Wed 18/1110:00 -

2 stops18h 40m

Deal found 4/9£693

Tue 22/909:45 -

2 stops29h 05m

Wed 30/919:45 -

2 stops28h 50m

Deal found 4/9£694

Sat 10/1009:45 -

2 stops28h 45m

Thu 22/1020:50 -

2 stops27h 45m

Deal found 4/9£694

Tue 20/1016:35 -

3 stops23h 00m

Mon 26/1012:25 -

2 stops30h 40m

Deal found 5/9£694

Sat 10/1013:40 -

3 stops24h 45m

Thu 22/1006:00 -

3 stops24h 30m

Deal found 4/9£694

Tue 22/916:35 -

3 stops21h 50m

Mon 5/1017:55 -

2 stops24h 50m

Deal found 3/9£695

Sun 15/1106:00 -

2 stops26h 40m

Tue 24/1109:20 -

2 stops29h 45m

Deal found 3/9£696

Mon 21/913:35 -

3 stops24h 50m

Mon 5/1006:00 -

3 stops21h 40m

Deal found 3/9£696

Mon 9/1110:30 -

2 stops22h 05m

Thu 19/1107:00 -

1 stop21h 05m

Deal found 5/9£696

Wed 2/1219:25 -

2 stops17h 25m

Fri 18/1209:20 -

2 stops19h 20m

Deal found 1/9£696

Best flights from London to Ko Samui
Discover carefully curated flight deals from London to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Sat 10/1013:40 -

3 stops24h 45m

Thu 22/1006:00 -

3 stops24h 30m

Deal found 4/9£694

Wed 4/1118:40 -

2 stops19h 25m

Mon 23/1109:20 -

2 stops29h 30m

Deal found 1/9£763

Mon 16/1108:35 -

2 stops19h 00m

Tue 1/1215:05 -

2 stops21h 50m

Deal found 4/9£824

Sat 20/219:25 -

2 stops37h 10m

Sat 6/310:00 -

2 stops18h 40m

Deal found 31/8£830

Sun 31/121:20 -

1 stop15h 25m

Tue 23/219:40 -

1 stop16h 45m

Deal found 31/8£833

Sat 21/1121:45 -

1 stop27h 15m

Thu 3/1219:45 -

1 stop26h 35m

Deal found 1/9£894

Mon 16/1120:15 -

2 stops31h 20m

Mon 30/1114:05 -

2 stops29h 00m

Deal found 4/9£896

Sun 28/213:45 -

2 stops18h 55m

Fri 26/309:20 -

2 stops17h 15m

Deal found 3/9£935

Mon 16/1120:55 -

2 stops30h 45m

Wed 18/1121:10 -

2 stops28h 00m

Deal found 1/9£976

Sun 20/905:40 -

3 stops22h 50m

Mon 28/917:55 -

3 stops24h 50m

Deal found 4/9£716

Tue 3/1108:35 -

2 stops19h 05m

Sun 22/1110:00 -

2 stops28h 50m

Deal found 1/9£770

Sun 20/905:40 -

3 stops24h 15m

Wed 30/917:55 -

3 stops24h 40m

Deal found 5/9£733

Sat 27/221:00 -

1 stop38h 15m

Sat 20/316:25 -

1 stop20h 20m

Deal found 4/9£849

Fri 2/1015:15 -

3 stops23h 35m

Mon 12/1006:00 -

3 stops21h 40m

Deal found 3/9£743

Tue 17/1113:30 -

2 stops18h 25m

Sun 29/1116:25 -

2 stops23h 15m

Deal found 4/9£835

Mon 16/1114:05 -

2 stops39h 30m

Thu 19/1114:05 -

2 stops34h 50m

Deal found 2/9£927

Tue 23/218:45 -

1 stop19h 20m

Fri 12/313:25 -

1 stop23h 20m

Deal found 2/9£850

Sat 20/210:40 -

1 stop23h 30m

Sat 6/308:55 -

1 stop17h 15m

Deal found 31/8£943

Mon 16/1108:35 -

2 stops20h 15m

Thu 19/1113:45 -

2 stops23h 10m

Deal found 3/9£955

Tue 20/1006:35 -

3 stops22h 30m

Mon 26/1012:25 -

3 stops29h 20m

Deal found 5/9£746

Thu 25/221:00 -

1 stop17h 05m

Fri 12/313:25 -

1 stop23h 20m

Deal found 31/8£851

Wed 30/914:55 -

2 stops21h 05m

Fri 23/1019:00 -

2 stops23h 55m

Deal found 2/9£942

Sat 20/208:40 -

2 stops19h 00m

Sat 6/310:00 -

2 stops26h 55m

Deal found 3/9£972

Sat 3/1015:30 -

3 stops23h 20m

Sat 10/1017:55 -

3 stops22h 35m

Deal found 5/9£747

Fri 13/1121:00 -

1 stop17h 05m

Wed 25/1116:25 -

1 stop20h 20m

Deal found 4/9£852

Sun 1/1113:20 -

2 stops17h 30m

Sun 15/1110:00 -

2 stops29h 40m

Deal found 2/9£945

Mon 16/1120:15 -

2 stops31h 20m

Fri 27/1108:30 -

2 stops34h 35m

Deal found 4/9£967

Sun 20/913:45 -

2 stops19h 00m

Sun 4/1008:45 -

2 stops17h 30m

Deal found 3/9£1,201

Mon 1/315:05 -

3 stops23h 15m

Thu 11/318:05 -

3 stops27h 30m

Deal found 4/9£762

Tue 17/1121:00 -

1 stop17h 05m

Fri 27/1116:25 -

1 stop20h 20m

Deal found 4/9£852

Find flight deals from London to Ko Samui

Round-trip from	£693
One-way from	£311
Popular in	December
Cheapest in	November
Average price	£819

4/10-11/10
5 total stops
49h 35m total
London to Ko Samui

Search Deals

14/10-31/12
3 total stops
21h 15m total
London to Ko Samui

Search Deals

Highest demand for flights based on searches. 11% potential increase in price (£91 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£36 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonKo Samui

LTN London Luton - USM Ko Samui

LTNUSM

London Luton

Mon 5/10

13:35-20:25

3 stops24h 50m

Ko Samui

Wed 31/12

00:00-18:00

Nonstop0h 00m

£316

LondonKo Samui

LTN London Luton - USM Ko Samui

LTNUSM

London Luton

Wed 14/10

13:35-20:25

3 stops24h 50m

Ko Samui

Wed 31/12

00:00-18:00

Nonstop0h 00m

£317

LondonKo Samui

STN London Stansted - USM Ko Samui

STNUSM

London Stansted

Mon 5/10

10:45-20:25

3 stops27h 40m

Ko Samui

Wed 31/12

00:00-18:00

Nonstop0h 00m

£319

LondonKo Samui

STN London Stansted - USM Ko Samui

STNUSM

London Stansted

Thu 29/10

17:20-10:55

2 stops34h 35m

Ko Samui

Wed 31/12

00:00-18:00

Nonstop0h 00m

£332

LondonKo Samui

LTN London Luton - USM Ko Samui

LTNUSM

London Luton

Tue 15/9

17:45-08:25

3 stops56h 40m

Ko Samui

Wed 31/12

00:00-18:00

Nonstop0h 00m

£332

LondonKo Samui

LGW London Gatwick - USM Ko Samui

LGWUSM

London Gatwick

Mon 5/10

13:50-20:25

3 stops24h 35m

Ko Samui

Wed 31/12

00:00-18:00

Nonstop0h 00m

£333

LondonKo Samui

LTN London Luton - USM Ko Samui

LTNUSM

London Luton

Tue 10/11

15:05-07:10

3 stops33h 05m

Ko Samui

Wed 31/12

00:00-18:00

Nonstop0h 00m

£344

LondonKo Samui

STN London Stansted - USM Ko Samui

STNUSM

London Stansted

Sat 28/11

19:40-08:00

2 stops29h 20m

Ko Samui

Wed 31/12

00:00-18:00

Nonstop0h 00m

£348

LondonKo Samui

LTN London Luton - USM Ko Samui

LTNUSM

London Luton

Thu 29/10

17:30-10:55

2 stops34h 25m

Ko Samui

Wed 31/12

00:00-18:00

Nonstop0h 00m

£351

LondonKo Samui

LGW London Gatwick - USM Ko Samui

LGWUSM

London Gatwick

Sat 9/1

11:05-07:10

2 stops37h 05m

Ko Samui

Wed 31/12

00:00-18:00

Nonstop0h 00m

£356

Flights are sorted by cheapest return flights first.

Deals found on 5/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from London to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from London with our price prediction graph.

LON-USM

LTN-USM

LGW-USM

LHR-USM

STN-USM

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Ko Samui

LON-USM

LTN-USM

LGW-USM

LHR-USM

STN-USM

What is the cheapest month to book a flight from London to Ko Samui?

Currently, November is the cheapest month in which you can book a flight from London to Ko Samui (average of £792). Flying from London to Ko Samui in December is currently the most expensive (average of £1,363). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from London to Ko Samui?

Airfare is below average for this route at the moment.

London to Ko Samui flights typically cost between £784 and £938 in October.
The cheapest return price found within the last 5 days was £693 on Multiple Airlines (4 Oct–11 Oct).

What’s the top stopover airport for flights from London to Ko Samui?

Bangkok (BKK) – chosen by Cheapflights users on 76% of one-stop itineraries from London to Ko Samui on Cheapflights.

What’s the cheapest stopover airport for flights from London to Ko Samui?

Shanghai (PVG) is the most affordable one-stop option, with an average return flight price of £396.

What’s the fastest stopover option from London to Ko Samui?

Flights via Vienna (VIE) have the shortest average one-way travel time for one-stop routes: 13h 13m.

Which airport typically offers the quickest stopover for flights from London to Ko Samui?

Flights via Vienna (VIE) offer the fastest connection on this route, with an average stopover time of 0h 48m.

How often are flights from London to Ko Samui delayed?

About 10% of weekly flights between London and Ko Samui have experienced delays in the past year, with the average delay time being 156 minutes.

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

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

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

Saturday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.

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

Over the past year, Virgin Atlantic have had the lowest number of delays on this route, with just 6% of flights being delayed.

How far ahead should I book a flight from London to Ko Samui?

The best time to book flights from London to Ko Samui is 74 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Ko Samui

Check out reviews from past customers who have flown with EVA Air,Singapore Airlines, andThai Airways from London to Ko Samui to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

EVA Air

8.5

Very Good

1,522 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Padma,Aug 2026

TPE - SFO

Great but could not allow me to do online booking

EVA Air

8.5

Very Good

1,522 reviews

EVA Air

8.5

Very Good

1,522 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Padma,Aug 2026

TPE - SFO

Great but could not allow me to do online booking

Singapore Airlines

8.2

Very Good

1,593 reviews

EVA Air

8.5

Very Good

1,522 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Padma,Aug 2026

TPE - SFO

Great but could not allow me to do online booking

Thai Airways

7.9

Good

418 reviews

EVA Air

8.5

Very Good

1,522 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Padma,Aug 2026

TPE - SFO

Great but could not allow me to do online booking

Qatar Airways

7.4

Good

3,731 reviews

EVA Air

8.5

Very Good

1,522 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Padma,Aug 2026

TPE - SFO

Great but could not allow me to do online booking

British Airways

6.7

Okay

8,206 reviews

EVA Air

8.5

Very Good

1,522 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Padma,Aug 2026

TPE - SFO

Great but could not allow me to do online booking

Related info for your journey

What airport do you fly into for flights to Ko Samui from London?
Most people fly into Ko Samui (USM) if they book a flight to Ko 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 Ko Samui’s city center.
How long is the flight from London to Ko Samui?
Departing from London to Ko Samui will take you 19h. The distance between London and Ko Samui is about 6138 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from London to Ko Samui round-trip?
According to our current data, Bangkok Airways (£117), Oman Air (£458), and Austrian Airlines (£586) offers the cheapest pricing from London to Ko Samui. Users have found that Bangkok Airways is 87% cheaper than the other options available to this destination.
What are the most popular routes from London to Ko Samui?
The most popular route from London to Ko Samui is London Heathrow - Ko Samui. You may also consider London Gatwick - Ko Samui or London City - Ko Samui.
Where are the most common stopover locations when flying from London to Ko Samui?
The most popular stopover on flights from London to Ko Samui is Bangkok.
What are some popular things to do or see while on a stopover in Bangkok?
Pratunam, Siam Square, and Thailand Cultural Center are currently the most popular points of interest in Bangkok at the moment. Pratunam, Siam Square, and Thailand Cultural Center are located about 14.8 mi, 15.1 mi, and 13.1 mi, respectively from Bangkok Suvarnabhumi. Travellers in need of a car in Bangkok can hire one for about £18 per day.
Where are the least popular stopover locations for London to Ko Samui flights?
London to Ko Samui flights have a stopover in Singapore the least frequently.
Can I find deals for flights from London to Ko Samui that include hotel bookings?
Yes. In addition to deals on London to Ko Samui flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Ko Samui?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Ko Samui.
Can I find deals for business class flights from London to Ko Samui?
Yes. Cheapflights offers flight deals from London to Ko Samui by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London to Ko Samui?
Currently, November is the cheapest month in which you can book a flight from London to Ko Samui (average of £792). Flying from London to Ko Samui in December is currently the most expensive (average of £1,363). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Ko Pha Ngan

Ko Tao

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Fly from London to Ko Samui on these airlines

Thai Airways flights from London to Ko Samui

EVA Air flights from London to Ko Samui

Etihad Airways flights from London to Ko Samui

Top 10 airlines flying from London to Ko Samui

Airline	Cheapest	Average	Flexibility	On-time
Bangkok Airways	Cheapest£117	Average£166	FlexibilityNo cancel fee	On-time74%	Search Bangkok Airways flights
Oman Air	Cheapest£458	Average£942	FlexibilityNo cancel fee	On-time76%	Search Oman Air flights
Austrian Airlines	Cheapest£586	Average£695	FlexibilityNo cancel fee	On-time78%	Search Austrian Airlines flights
Lufthansa	Cheapest£597	Average£775	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Etihad Airways	Cheapest£607	Average£783	FlexibilityNo cancel fee	On-time75%	Search Etihad Airways flights
SWISS	Cheapest£609	Average£712	FlexibilityNo cancel fee	On-time79%	Search SWISS flights
British Airways	Cheapest£712	Average£1,009	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
EVA Air	Cheapest£722	Average£856	FlexibilityNo cancel fee	On-time74%	Search EVA Air flights
Singapore Airlines	Cheapest£749	Average£954	FlexibilityNo cancel fee	On-time81%	Search Singapore Airlines flights
Qatar Airways	Cheapest£770	Average£859	FlexibilityNo cancel fee	On-time68%	Search Qatar Airways flights

Fly with Cheapflights

How does Cheapflights help users find flights from London to Ko Samui?

When you search for this flight from London to Ko Samui, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from London to Ko Samui?

Cheapflights simply makes it quick and affordable to book flights from London to Ko Samui by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from London to Ko Samui with no change fees?

Need flexible booking options for your flight to Ko Samui from London? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from London to Ko Samui become cheaper?

Not ready to book yet? You can track prices for flights from London to Ko Samui on Cheapflights with our Price Alert feature and get notified when better prices are available.

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Cheap flights from London to Ko Samui from £311

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Ko Samui

Cheapest flights from London to Ko SamuiExplore the most affordable flight options available from London to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 September 2026.

Explore the most affordable flight options available from London to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 September 2026.

Best flights from London to Ko SamuiDiscover carefully curated flight deals from London to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Discover carefully curated flight deals from London to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Last-minute flights from London to Ko SamuiDiscover last-minute flight deals from London to Ko Samui. Data last updated 5 September 2026 and is based on user searches.

Discover last-minute flight deals from London to Ko Samui. Data last updated 5 September 2026 and is based on user searches.

One-way flights from London to Ko SamuiSearch for one-way flight options from London to Ko Samui. Find affordable one-way fares based on user searches. Data last updated 5 September 2026.

Search for one-way flight options from London to Ko Samui. Find affordable one-way fares based on user searches. Data last updated 5 September 2026.

Find flight deals from London to Ko Samui

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Ko Samui that are best for you.

Best time to book a flight from London to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from London with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from London to Ko Samui?

How much does it cost for a return flight from London to Ko Samui?

Airfare is below average for this route at the moment.

London to Ko Samui flights typically cost between £784 and £938 in October.The cheapest return price found within the last 5 days was £693 on Multiple Airlines (4 Oct–11 Oct).

What’s the top stopover airport for flights from London to Ko Samui?

Share of one-stop return flights from London to Ko Samui chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Bangkok (BKK) – chosen by Cheapflights users on 76% of one-stop itineraries from London to Ko Samui on Cheapflights.

What’s the cheapest stopover airport for flights from London to Ko Samui?

Average return fare for one-stop flights from London to Ko Samui, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Shanghai (PVG) is the most affordable one-stop option, with an average return flight price of £396.

What’s the fastest stopover option from London to Ko Samui?

Shortest average travel time for one-stop one-way flights from London to Ko Samui, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Vienna (VIE) have the shortest average one-way travel time for one-stop routes: 13h 13m.

Which airport typically offers the quickest stopover for flights from London to Ko Samui?

Average stopover duration for one-stop one-way flights from London to Ko Samui, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Vienna (VIE) offer the fastest connection on this route, with an average stopover time of 0h 48m.

How often are flights from London to Ko Samui delayed?

About 10% of weekly flights between London and Ko Samui have experienced delays in the past year, with the average delay time being 156 minutes.

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

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

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

Saturday tends to have the lowest number of delays on this route, whereas Tuesday has historically faced a higher average of delays compared to other days of the week.

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

Over the past year, Virgin Atlantic have had the lowest number of delays on this route, with just 6% of flights being delayed.

How far ahead should I book a flight from London to Ko Samui?

The best time to book flights from London to Ko Samui is 74 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Ko Samui

Check out reviews from past customers who have flown with EVA Air,Singapore Airlines, andThai Airways from London to Ko Samui to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

How long is the flight from London to Ko Samui?

What are the cheapest airlines flying from London to Ko Samui round-trip?

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

Where are the most common stopover locations when flying from London to Ko Samui?

What are some popular things to do or see while on a stopover in Bangkok?

Where are the least popular stopover locations for London to Ko Samui flights?

Can I find deals for flights from London to Ko Samui that include hotel bookings?

How can I find direct flights from London to Ko Samui?

Can I find deals for business class flights from London to Ko Samui?

What is the cheapest month to book a flight from London to Ko Samui?

Travelling to a place near Ko Samui?

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Fly from London to Ko Samui on these airlines

Choose from the following airlines for your flight from London to Ko Samui. Flights are based on user searches made on Cheapflights and were last updated on 5 September 2026.

Alternative routes for London to Ko Samui

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

Complete your trip

Complete your trip to Ko Samui by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Thailand

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Search flights from London to Ko Samui by cabin class

Find flights from London to Ko Samui, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to Ko Samui

Explore flights to Ko Samui departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 5 September 2026.

London and Ko Samui flights

Browse other London and Ko Samui flight options. Last updated on 5 September 2026.

Other flights from London

Cheapest flights from London to Ko Samui
Explore the most affordable flight options available from London to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 September 2026.

Best flights from London to Ko Samui
Discover carefully curated flight deals from London to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Last-minute flights from London to Ko Samui
Discover last-minute flight deals from London to Ko Samui. Data last updated 5 September 2026 and is based on user searches.

One-way flights from London to Ko Samui
Search for one-way flight options from London to Ko Samui. Find affordable one-way fares based on user searches. Data last updated 5 September 2026.

London to Ko Samui flights typically cost between £784 and £938 in October.
The cheapest return price found within the last 5 days was £693 on Multiple Airlines (4 Oct–11 Oct).