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Cheap flights from Ko Samui to London from £295

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 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
USM — LON
27 Feb — 6 Mar1
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 28 January 2026.

Wed 11/316:30
USM
-
LHR
3 stops45h 50m
Multiple Airlines
Wed 18/321:00
LHR
-
USM
2 stops28h 25m
Multiple Airlines
Deal found 25/1£786
Wed 11/319:00
USM
-
LGW
2 stops26h 00m
Multiple Airlines
Wed 18/310:30
LGW
-
USM
2 stops27h 50m
Multiple Airlines
Deal found 25/1£799
Sat 7/221:40
USM
-
LHR
2 stops23h 20m
Multiple Airlines
Sun 22/219:20
LHR
-
USM
2 stops29h 10m
Multiple Airlines
Deal found 26/1£837
Wed 15/713:30
USM
-
LHR
2 stops23h 00m
Multiple Airlines
Tue 25/813:50
LHR
-
USM
2 stops25h 20m
Multiple Airlines
Deal found 25/1£845
Mon 23/219:45
USM
-
LGW
3 stops29h 40m
Multiple Airlines
Mon 2/307:30
LGW
-
USM
3 stops27h 55m
Multiple Airlines
Deal found 26/1£846
Thu 12/319:45
USM
-
LHR
2 stops26h 40m
Multiple Airlines
Thu 19/316:30
LHR
-
USM
2 stops20h 55m
Multiple Airlines
Deal found 25/1£847
Mon 23/219:45
USM
-
LHR
2 stops32h 20m
Multiple Airlines
Mon 2/306:35
LHR
-
USM
2 stops29h 15m
Multiple Airlines
Deal found 26/1£849
Wed 15/713:30
USM
-
LGW
2 stops23h 10m
Multiple Airlines
Tue 25/809:25
LGW
-
USM
2 stops29h 45m
Multiple Airlines
Deal found 25/1£853
Thu 12/211:40
USM
-
LHR
2 stops25h 45m
Multiple Airlines
Thu 19/208:40
LHR
-
USM
2 stops26h 35m
Multiple Airlines
Deal found 27/1£864
Wed 15/706:00
USM
-
LHR
2 stops31h 30m
Multiple Airlines
Wed 26/813:50
LHR
-
USM
2 stops25h 20m
Multiple Airlines
Deal found 25/1£868
Sat 7/219:45
USM
-
LGW
2 stops22h 55m
Multiple Airlines
Sun 22/210:15
LGW
-
USM
3 stops27h 10m
Multiple Airlines
Deal found 26/1£868
Wed 15/709:15
USM
-
LHR
1 stop16h 05m
EVA Air
Mon 24/821:35
LHR
-
USM
1 stop17h 15m
EVA Air
Deal found 25/1£879

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 28 January 2026.

Round-trip from

£837

One-way from

£295
Etihad Airways
  • Etihad Airways
  • 7/2-22/2
  • 4 total stops
  • 52h 30m total
  • Ko Samui to London
Search Deals
11/3
  • 11/3
  • 3 total stops
  • 40h 05m 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 28 January 2026.
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 11/3

19:00-14:00

2 stops26h 00m

London Gatwick

Wed 18/3

10:30-21:20

2 stops27h 50m

£799

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 11/3

16:30-06:35

2 stops21h 05m

London Heathrow

Wed 18/3

20:55-21:20

2 stops17h 25m

£809

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sat 7/2

21:40-14:00

2 stops23h 20m

London Heathrow

Sun 22/2

19:20-07:30

2 stops29h 10m

£837

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 15/7

13:30-06:30

2 stops23h 00m

London Heathrow

Tue 25/8

13:50-21:10

2 stops25h 20m

£845

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Mon 23/2

19:45-18:25

3 stops29h 40m

London Gatwick

Mon 2/3

07:30-18:25

3 stops27h 55m

£846

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 12/3

19:45-15:25

2 stops26h 40m

London Heathrow

Thu 19/3

16:30-20:25

2 stops20h 55m

£847

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 23/2

19:45-21:05

2 stops32h 20m

London Heathrow

Mon 2/3

06:35-18:50

2 stops29h 15m

£849

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Wed 15/7

13:30-06:40

2 stops23h 10m

London Gatwick

Tue 25/8

09:25-21:10

2 stops29h 45m

£853

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 12/2

11:40-06:25

2 stops25h 45m

London Heathrow

Thu 19/2

08:40-18:15

2 stops26h 35m

£864

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 15/7

06:00-07:30

2 stops31h 30m

London Heathrow

Wed 26/8

13:50-21:10

2 stops25h 20m

£868

Flights are sorted by cheapest return flights first.

Deals found on 25/1

Showing 1-10 of 48 results
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2
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5

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

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

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

Bangkok (BKK) – chosen by Cheapflights users on 86% of one-stop itineraries from Ko Samui to London on Cheapflights.

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

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

Singapore (SIN) is the most affordable one-stop option, with an average return flight price of £815.

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

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

Flights via Bangkok (BKK) have the shortest average one-way travel time for one-stop routes: 16h 05m.

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

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

Flights via Bangkok (BKK) offer the fastest connection on this route, with an average stopover time of 2h 00m.

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 28 January 2026.
See what other customers who have flown with EVA Air and Austrian Airlines from Ko Samui to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very Good
1,334 reviews
Check prices

Overall

8.4

Food

8.1

Crew

8.6

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Reviews

1 / 20
8.0
Excellent

Jolene,Jan 2026

SGN - TPE

Everything was good. I asked for aisle seating as I must stretch my leg out because of back and pelvis issues. Sometimes I don't always get it. But I did for all 3 of my flights for my destination. It was very nice.
EVA Air
8.4
Very Good
1,334 reviews
EVA Air
8.4
Very Good
1,334 reviews
Check prices

Overall

8.4

Food

8.1

Crew

8.6

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Reviews

1 / 20
8.0
Excellent

Jolene,Jan 2026

SGN - TPE

Everything was good. I asked for aisle seating as I must stretch my leg out because of back and pelvis issues. Sometimes I don't always get it. But I did for all 3 of my flights for my destination. It was very nice.
Austrian Airlines
7.5
Good
895 reviews
EVA Air
8.4
Very Good
1,334 reviews
Check prices

Overall

8.4

Food

8.1

Crew

8.6

Entertainment

8.0

Boarding

8.4

Comfort

8.3

Reviews

1 / 20
8.0
Excellent

Jolene,Jan 2026

SGN - TPE

Everything was good. I asked for aisle seating as I must stretch my leg out because of back and pelvis issues. Sometimes I don't always get it. But I did for all 3 of my flights for my destination. It was very nice.

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.

  • 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 City or Ko Samui - London Gatwick 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

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Alternative routes for Ko Samui to London

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

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

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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.

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