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Cheap flights from Ko Samui to London from ฿9,422

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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
USM — LON
6 Jul — 13 Jul1
1 adult

Cheap 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 1 July 2025.

Round-trip from

฿31,581

One-way from

฿9,422

Popular in

January

Cheapest in

October

Average price

฿38,079
สวิส อินเตอร์เนชั่นแนล แอร์ไลน์
  • สวิส อินเตอร์เนชั่นแนล แอร์ไลน์
  • 18/11-22/11
  • 4 total stops
  • 47h 50m total
  • Ko Samui to London
Search Deals
4/11
  • 4/11
  • 2 total stops
  • 33h 35m total
  • Ko Samui to London
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (฿272,076 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (฿97,409 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find flight deals from Ko Samui to London

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 1 July 2025.

Tue 18/1110:00USM - LHR
2 stops18h 40mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Sat 22/1108:55LHR - USM
2 stops29h 10mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Deal found 30/6฿31,581
Sun 16/1116:25USM - LGW
2 stops32h 25mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Thu 20/1118:40LGW - USM
2 stops19h 25mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Deal found 30/6฿31,743
Fri 14/1116:25USM - LCY
2 stops22h 30mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Tue 18/1113:30LCY - USM
2 stops24h 35mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Deal found 30/6฿32,718
Wed 13/812:10USM - LGW
2 stops24h 55mMultiple Airlines
Wed 20/806:00LGW - USM
3 stops25h 55mMultiple Airlines
Deal found 28/6฿32,978
Wed 13/819:25USM - LHR
2 stops29h 35mMultiple Airlines
Wed 20/808:40LHR - USM
3 stops29h 45mMultiple Airlines
Deal found 29/6฿33,888
Mon 15/917:55USM - LHR
2 stops43h 10mEmirates
Sat 11/1020:40LHR - USM
2 stops55h 30mEmirates
Deal found 1/7฿37,819
Mon 15/908:45USM - LHR
1 stop16h 30mThai Airways
Sat 11/1021:25LHR - USM
1 stop27h 55mThai Airways
Deal found 1/7฿39,444
Tue 18/1116:25USM - LHR
1 stop20h 50mแควนตัสแอร์เวย์
Sat 22/1120:10LHR - USM
1 stop17h 55mแควนตัสแอร์เวย์
Deal found 30/6฿40,743
Wed 13/821:00USM - LHR
2 stops22h 20mQatar Airways
Wed 20/810:50LHR - USM
2 stops19h 05mQatar Airways
Deal found 28/6฿41,068
Tue 18/1109:20USM - LHR
1 stop17h 00mEVA Air
Sat 22/1121:35LHR - USM
1 stop15h 15mEVA Air
Deal found 28/6฿41,816
Wed 13/821:00USM - LGW
2 stops22h 25mQatar Airways
Wed 20/809:00LGW - USM
2 stops19h 30mQatar Airways
Deal found 28/6฿43,830
Sun 16/1119:10USM - LGW
1 stop17h 20mบริติชแอร์เวย์
Thu 20/1121:15LGW - USM
1 stop15h 35mบริติชแอร์เวย์
Deal found 30/6฿47,014

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 17,341 searches. Data last updated 1 July 2025.
Use the filters below to find and compare flights from Ko Samui to London that are best for you.

Fly from

Ko Samui

Fly to

London

Route

Depart

Return

Price

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 18/11

10:00-21:40

2 stops18h 40m

London Heathrow

Sat 22/11

08:55-21:05

2 stops29h 10m

฿31,581

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Sun 16/11

16:25-17:50

2 stops32h 25m

London Gatwick

Thu 20/11

18:40-21:05

2 stops19h 25m

฿31,743

Ko SamuiLondon

USM - LCY

USMLCY

Ko Samui

Fri 14/11

16:25-07:55

2 stops22h 30m

London City

Tue 18/11

13:30-21:05

2 stops24h 35m

฿32,718

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Wed 13/8

12:10-07:05

2 stops24h 55m

London Gatwick

Wed 20/8

06:00-13:55

3 stops25h 55m

฿32,978

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 13/8

19:25-19:00

2 stops29h 35m

London Heathrow

Wed 20/8

08:40-20:25

3 stops29h 45m

฿33,888

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 15/9

17:55-07:05

2 stops43h 10m

London Heathrow

Sat 11/10

20:40-10:10

2 stops55h 30m

฿37,819

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 15/9

08:45-19:15

1 stop16h 30m

London Heathrow

Sat 11/10

21:25-07:20

1 stop27h 55m

฿39,444

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 18/11

16:25-06:15

1 stop20h 50m

London Heathrow

Sat 22/11

20:10-21:05

1 stop17h 55m

฿40,743

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 13/8

21:00-13:20

2 stops22h 20m

London Heathrow

Wed 20/8

10:50-11:55

2 stops19h 05m

฿41,068

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 18/11

09:20-19:20

1 stop17h 00m

London Heathrow

Sat 22/11

21:35-19:50

1 stop15h 15m

฿41,816

Flights are sorted by cheapest return flights first.

Deals found on 29/6

Showing 1-10 of 25 results
1
2
3

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.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 1 July 2025.
Read reviews from past customers who have flown with EVA Air, Emirates, andSingapore Airlines from Ko Samui to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very Good
1,212 reviews
Check prices

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very Good
1,212 reviews
EVA Air
8.4
Very Good
1,212 reviews
Check prices

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Emirates
8.1
Very Good
3,285 reviews
EVA Air
8.4
Very Good
1,212 reviews
Check prices

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Singapore Airlines
8.1
Very Good
1,320 reviews
EVA Air
8.4
Very Good
1,212 reviews
Check prices

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
เคแอลเอ็ม รอยัล ดัตช์ แอร์ไลน์
7.8
Good
1,366 reviews
EVA Air
8.4
Very Good
1,212 reviews
Check prices

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Thai Airways
7.7
Good
338 reviews
EVA Air
8.4
Very Good
1,212 reviews
Check prices

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Food

8.1

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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?

    For a flight from Ko Samui to London, you will be flying from Ko Samui. Ko Samui (USM) is just 3.3 km from the centre of the city. Ko Samui is the only Ko Samui airport and it handles 0 outbound flights to London per day. 0 airlines have flights to London from Ko Samui on a regular basis.

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

    According to our current data, สวิส อินเตอร์เนชั่นแนล แอร์ไลน์ (฿31,581), Emirates (฿37,819), and Thai Airways (฿39,444) offers the cheapest pricing from Ko Samui to London. These flights start at 22% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Ko Samui to London one-way?

    The cheapet airlines for a one-way flight from Ko Samui to London are Thai Airways (฿17,058), EVA Air (฿19,267), and Qatar Airways (฿20,469).

  • 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.

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

    Currently, December is the cheapest month in which you can book a flight from Ko Samui to London (average of ฿810). Flying from Ko Samui to London in July is currently the most expensive (average of ฿1,025). 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

Travelling to a place near Ko Samui?

Book flights to Ko Samui if you plan to visit one of these locations
Brentford
Waterlooville

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

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

Certainly. Search results for flights to London from Ko Samui shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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