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Cheap flights from Ko Samui to London from ฿12,076

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 29/6. Fares are subject to change and may not be available on all flights or dates of travel.
USM — LON
16 Jun — 23 Jun1
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 11 June 2025.

Round-trip from

฿32,966

One-way from

฿12,076

Popular in

January

Cheapest in

October

Average price

฿33,455
6/8-21/8
  • 6/8-21/8
  • 4 total stops
  • 64h 05m total
  • Ko Samui to London
Search Deals
29/6
  • 29/6
  • 2 total stops
  • 36h 20m total
  • Ko Samui to London
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (฿274,985 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (฿98,342 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2025
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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 11 June 2025.

Wed 6/819:25USM - LGW
2 stops32h 55mMultiple Airlines
Thu 21/805:20LGW - USM
2 stops31h 10mMultiple Airlines
Deal found 9/6฿32,966
Wed 6/819:25USM - LHR
2 stops33h 00mMultiple Airlines
Thu 21/806:30LHR - USM
2 stops28h 15mMultiple Airlines
Deal found 9/6฿34,924
Wed 11/608:00USM - LHR
1 stop17h 20mEVA Air
Thu 3/721:35LHR - USM
1 stop17h 15mEVA Air
Deal found 9/6฿37,894
Tue 10/619:15USM - LHR
2 stops19h 45mออสเตรียนแอร์ไลน์
Mon 30/619:30LHR - USM
2 stops16h 15mออสเตรียนแอร์ไลน์
Deal found 9/6฿38,057
Tue 10/615:50USM - LGW
2 stops23h 45mเตอร์กิชแอร์ไลน์
Mon 30/617:15LGW - USM
2 stops19h 15mเตอร์กิชแอร์ไลน์
Deal found 9/6฿38,873
Sat 14/615:30USM - LHR
2 stops24h 20mเตอร์กิชแอร์ไลน์
Mon 30/606:30LHR - USM
2 stops19h 45mเตอร์กิชแอร์ไลน์
Deal found 9/6฿40,277
Tue 10/619:15USM - LHR
2 stops27h 50mลุฟท์ฮันซ่า
Sun 6/707:25LHR - USM
2 stops31h 45mลุฟท์ฮันซ่า
Deal found 9/6฿40,636
Tue 10/616:25USM - LGW
2 stops31h 25mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Wed 2/718:35LGW - USM
2 stops20h 35mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Deal found 9/6฿41,256
Tue 10/616:25USM - LHR
2 stops21h 30mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Wed 2/718:40LHR - USM
2 stops20h 30mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Deal found 9/6฿41,386
Tue 10/616:25USM - LCY
2 stops22h 25mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Wed 2/719:20LCY - USM
2 stops19h 50mสวิส อินเตอร์เนชั่นแนล แอร์ไลน์
Deal found 9/6฿42,202
Thu 24/717:55USM - LGW
2 stops18h 45mQatar Airways
Thu 31/714:55LGW - USM
2 stops21h 40mQatar Airways
Deal found 9/6฿42,659
Thu 24/708:20USM - LHR
2 stops29h 10mQatar Airways
Thu 31/718:55LHR - USM
2 stops30h 40mQatar Airways
Deal found 9/6฿43,769

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 11 June 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 - LGW

USMLGW

Ko Samui

Wed 6/8

19:25-22:20

2 stops32h 55m

London Gatwick

Thu 21/8

05:20-18:30

2 stops31h 10m

฿32,966

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 6/8

19:25-22:25

2 stops33h 00m

London Heathrow

Thu 21/8

06:30-16:45

2 stops28h 15m

฿34,924

Ko SamuiLondon

USM - LCY

USMLCY

Ko Samui

Wed 6/8

09:15-12:30

2 stops33h 15m

London City

Thu 21/8

13:05-21:10

2 stops26h 05m

฿42,202

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Thu 24/7

17:55-06:40

2 stops18h 45m

London Gatwick

Thu 31/7

14:55-18:35

2 stops21h 40m

฿42,659

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 24/7

08:20-07:30

2 stops29h 10m

London Heathrow

Thu 31/7

18:55-07:35

2 stops30h 40m

฿43,769

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 24/7

08:20-06:35

1 stop28h 15m

London Heathrow

Thu 31/7

20:50-21:10

1 stop18h 20m

฿44,716

Ko SamuiLondon

USM - LCY

USMLCY

Ko Samui

Mon 25/8

12:05-08:50

2 stops26h 45m

London City

Tue 9/9

13:05-13:45

2 stops18h 40m

฿45,891

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 25/8

09:15-07:55

2 stops28h 40m

London Heathrow

Fri 12/9

08:40-13:45

2 stops23h 05m

฿46,576

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sat 2/8

08:45-19:20

1 stop16h 35m

London Heathrow

Sat 16/8

21:35-20:50

1 stop17h 15m

฿47,653

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 22/8

10:55-05:40

1 stop24h 45m

London Heathrow

Wed 10/9

18:20-18:35

1 stop18h 15m

฿49,677

Flights are sorted by cheapest return flights first.

Deals found on 9/6

Showing 1-10 of 35 results
1
2
3
4

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

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 11 June 2025.
Read reviews from past customers who have flown EVA Air, Emirates and Singapore 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
1,202 reviews
Check prices

Comfort

8.3

Crew

8.6

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

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
1,202 reviews
EVA Air
8.4
Very Good
1,202 reviews
Check prices

Comfort

8.3

Crew

8.6

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

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
3,264 reviews
EVA Air
8.4
Very Good
1,202 reviews
Check prices

Comfort

8.3

Crew

8.6

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

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
1,302 reviews
EVA Air
8.4
Very Good
1,202 reviews
Check prices

Comfort

8.3

Crew

8.6

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

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
1,358 reviews
EVA Air
8.4
Very Good
1,202 reviews
Check prices

Comfort

8.3

Crew

8.6

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

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
335 reviews
EVA Air
8.4
Very Good
1,202 reviews
Check prices

Comfort

8.3

Crew

8.6

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

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 (฿42,202), Qatar Airways (฿42,659), and แควนตัสแอร์เวย์ (฿44,716) offers the cheapest pricing from Ko Samui to London.

  • 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 Emirates (฿18,833), Thai Airways (฿18,963), and Qatar Airways (฿19,453).

  • 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 City, Ko Samui - London Gatwick or Ko Samui - London Heathrow, 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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