Find flights
When to book
FAQs

Cheap flights from Ko Samui to London from £328

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
USM — LON
13 Jul — 20 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ko Samui to London

Enter your travel dates to find the best prices.

Cheapest flights from Ko Samui to London
Explore the most affordable flight options available from Ko Samui to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 13 June 2026.

Thu 29/1007:00
USM
-
LGW
1 stop22h 25m
Multiple Airlines
Sat 28/1112:00
LGW
-
USM
1 stop16h 30m
Multiple Airlines
Deal found 12/6£568
Thu 29/1007:00
USM
-
LGW
1 stop22h 25m
Multiple Airlines
Wed 25/1120:00
LGW
-
USM
1 stop28h 10m
Multiple Airlines
Deal found 12/6£579
Wed 28/1007:00
USM
-
LGW
1 stop18h 05m
Multiple Airlines
Wed 25/1120:00
LGW
-
USM
1 stop28h 10m
Multiple Airlines
Deal found 12/6£589
Wed 28/1007:00
USM
-
LGW
1 stop18h 05m
Multiple Airlines
Sat 28/1112:00
LGW
-
USM
1 stop14h 20m
Multiple Airlines
Deal found 12/6£594
Thu 29/1007:00
USM
-
LGW
1 stop22h 25m
Multiple Airlines
Tue 24/1115:40
LGW
-
USM
1 stop17h 45m
Multiple Airlines
Deal found 12/6£595
Mon 26/1007:00
USM
-
LGW
1 stop37h 45m
Multiple Airlines
Sat 28/1112:00
LGW
-
USM
1 stop15h 35m
Multiple Airlines
Deal found 12/6£597
Thu 29/1007:00
USM
-
LGW
1 stop22h 25m
Multiple Airlines
Mon 23/1111:20
LGW
-
USM
1 stop14h 20m
Multiple Airlines
Deal found 12/6£603
Mon 26/1007:00
USM
-
LGW
1 stop37h 45m
Multiple Airlines
Wed 25/1120:00
LGW
-
USM
1 stop14h 40m
Multiple Airlines
Deal found 12/6£610
Wed 28/1007:00
USM
-
LGW
1 stop18h 05m
Multiple Airlines
Tue 24/1115:40
LGW
-
USM
1 stop17h 45m
Multiple Airlines
Deal found 12/6£621
Wed 28/1007:00
USM
-
LGW
1 stop18h 05m
Multiple Airlines
Mon 23/1111:20
LGW
-
USM
1 stop14h 20m
Multiple Airlines
Deal found 12/6£629
Tue 15/915:20
USM
-
LHR
2 stops33h 50m
Oman Air
Tue 6/1020:50
LHR
-
USM
2 stops37h 40m
Oman Air
Deal found 11/6£717
Tue 15/914:00
USM
-
LHR
2 stops22h 55m
Gulf Air
Tue 6/1010:00
LHR
-
USM
2 stops20h 45m
Gulf Air
Deal found 9/6£818

Find flight deals from Ko Samui to London

Discover tips and strategies to find the most affordable flight options for your journey from Ko Samui (USM) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 13 June 2026.

Round-trip from

£568

One-way from

£328
29/10-28/11
  • 29/10-28/11
  • 2 total stops
  • 38h 55m total
  • Ko Samui to London
Search Deals
12/7
  • 12/7
  • 2 total stops
  • 19h 10m total
  • Ko Samui to London
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ko Samui to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 13 June 2026.
Use the filters below to find and compare flights from Ko Samui to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 15/9

14:35-15:20

2 stops30h 45m

London Heathrow

Tue 6/10

10:00-13:45

2 stops21h 45m

£822

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Thu 19/11

16:25-06:40

2 stops21h 15m

London Gatwick

Sun 22/11

09:40-21:05

2 stops28h 25m

£891

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 6/7

20:50-19:10

2 stops28h 20m

London Heathrow

Mon 13/7

08:25-11:05

2 stops20h 40m

£902

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 19/11

16:25-11:40

2 stops26h 15m

London Heathrow

Sun 22/11

13:40-21:05

2 stops24h 25m

£916

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 5/11

16:25-11:40

2 stops26h 15m

London Heathrow

Mon 9/11

13:40-21:05

2 stops24h 25m

£922

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 21/7

11:55-08:00

2 stops26h 05m

London Heathrow

Tue 11/8

08:25-10:30

2 stops20h 05m

£943

Ko SamuiLondon

USM - LCY

USMLCY

Ko Samui

Thu 29/10

08:30-19:35

2 stops18h 05m

London City

Thu 26/11

17:50-21:05

2 stops20h 15m

£955

Ko SamuiLondon

USM - LCY

USMLCY

Ko Samui

Tue 27/10

07:00-19:35

2 stops19h 35m

London City

Wed 25/11

17:05-21:05

2 stops21h 00m

£955

Ko SamuiLondon

USM - LCY

USMLCY

Ko Samui

Wed 28/10

07:00-19:35

2 stops19h 35m

London City

Wed 25/11

17:50-21:05

2 stops20h 15m

£955

Ko SamuiLondon

USM - LCY

USMLCY

Ko Samui

Tue 27/10

08:30-19:35

2 stops18h 05m

London City

Thu 26/11

17:50-21:05

2 stops20h 15m

£955

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 51 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from Ko Samui to London

Have a flexible travel schedule? Discover the best time to fly to London from Ko Samui with our price prediction graph.
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 Ko Samui to London
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Ko Samui to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    If you book a flight to London from Ko Samui, you will be flying from Ko Samui, which is the city’s only airport. Ko Samui (USM) is located 2.1 mi from the center of Ko Samui. There are 0 flights from Ko Samui to London per day from 0 different airlines.

  • How long is the flight from Ko Samui to London?

    Oman Air, Gulf Air, and Emirates can get you from Ko Samui to London in just under 21h 15m. Your travel time can differ by up to 12h 05m. Ko Samui and London are separated by a distance of 6138 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    When deciding which route to take from Ko Samui to London consider Ko Samui - London Heathrow, Ko Samui - London Gatwick or Ko Samui - London City as they are the most popular.

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

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

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

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

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

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

See more FAQs

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Milton Keynes
Wembley
Luton
Gatwick
Slough
Ilford
Croydon
Hayes
Brentford
Colchester
Kingston upon Thames
Eastbourne
Watford
Ipswich
Guildford
Romford
Borehamwood
Folkestone
Southall

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ko Samui to London. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights helps you find that perfect flight to London from Ko Samui by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes! Cheapflights helps users easily find flights from Ko Samui to London with no change fees.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Ko Samui today and book when prices fit your budget.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.