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Cheap flights from the United Kingdom to Ko Samui from £305

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 21/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — USM
10 May — 17 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Ko Samui

Enter your travel dates to find the best prices.

Cheapest flights from United Kingdom to Ko Samui
Explore the most affordable flight options available from United Kingdom to Ko Samui. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 April 2026.

Tue 12/508:30
BHX
-
USM
3 stops29h 55m
Multiple Airlines
Fri 22/506:00
USM
-
BHX
3 stops39h 05m
Multiple Airlines
Deal found 8/4£676
Wed 20/520:25
BHX
-
USM
3 stops32h 05m
Multiple Airlines
Wed 27/517:55
USM
-
BHX
3 stops29h 40m
Multiple Airlines
Deal found 5/4£682
Wed 20/520:30
EDI
-
USM
3 stops32h 00m
Multiple Airlines
Wed 27/506:00
USM
-
EDI
3 stops31h 20m
Multiple Airlines
Deal found 5/4£687
Mon 1/608:45
BHX
-
USM
3 stops29h 40m
Multiple Airlines
Mon 22/606:00
USM
-
BHX
3 stops39h 05m
Multiple Airlines
Deal found 7/4£691
Tue 1/908:20
GLA
-
USM
3 stops31h 15m
Multiple Airlines
Wed 30/906:00
USM
-
GLA
3 stops38h 20m
Multiple Airlines
Deal found 9/4£750
Wed 13/516:30
STN
-
USM
3 stops23h 05m
Multiple Airlines
Sun 24/506:00
USM
-
STN
3 stops24h 40m
Multiple Airlines
Deal found 8/4£751
Fri 8/514:45
LHR
-
USM
2 stops24h 50m
Etihad Airways
Fri 15/519:00
USM
-
LHR
2 stops26h 05m
Etihad Airways
Deal found 10/4£751
Fri 15/514:45
LHR
-
USM
2 stops17h 55m
Multiple Airlines
Tue 26/517:50
USM
-
LHR
2 stops19h 10m
Multiple Airlines
Deal found 10/4£751
Tue 10/1108:40
EDI
-
USM
3 stops28h 35m
Multiple Airlines
Wed 25/1112:00
USM
-
EDI
3 stops38h 20m
Multiple Airlines
Deal found 6/4£752
Sat 5/908:10
LGW
-
USM
2 stops20h 20m
Multiple Airlines
Sun 20/915:25
USM
-
LGW
2 stops21h 15m
Multiple Airlines
Deal found 8/4£753
Sun 6/906:00
STN
-
USM
3 stops29h 05m
Multiple Airlines
Sun 20/908:10
USM
-
STN
3 stops43h 55m
Multiple Airlines
Deal found 9/4£753
Sun 5/710:25
LGW
-
USM
3 stops27h 20m
Multiple Airlines
Tue 21/708:40
USM
-
LGW
3 stops28h 45m
Multiple Airlines
Deal found 8/4£754

Find flight deals from United Kingdom to Ko Samui

Keep the following information in mind while searching for United Kingdom to Ko Samui flight deals. Data was last updated 10 April 2026.

Round-trip from

£676

One-way from

£305

Popular in

December

Cheapest in

November

Average price

£909
12/5-22/5
  • 12/5-22/5
  • 6 total stops
  • 69h 00m total
  • United Kingdom to Ko Samui
Search Deals
21/4
  • 21/4
  • 2 total stops
  • 43h 10m total
  • United Kingdom to Ko Samui
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£28 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom to Ko Samui 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 10 April 2026.
Use the filters below to find and compare flights from the United Kingdom to Ko Samui that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BirminghamKo Samui

BHX - USM

BHXUSM

Birmingham

Tue 12/5

08:30-20:25

3 stops29h 55m

Ko Samui

Fri 22/5

06:00-15:05

3 stops39h 05m

£676

GlasgowKo Samui

GLA - USM

GLAUSM

Glasgow Intl

Tue 1/9

08:20-21:35

3 stops31h 15m

Ko Samui

Wed 30/9

06:00-14:20

3 stops38h 20m

£750

GlasgowKo Samui

GLA - USM

GLAUSM

Glasgow Intl

Sat 23/5

14:00-21:35

3 stops25h 35m

Ko Samui

Sat 30/5

06:00-07:15

3 stops31h 15m

£760

LondonKo Samui

LTN - USM

LTNUSM

London Luton

Sun 6/9

18:30-21:35

3 stops21h 05m

Ko Samui

Sun 4/10

13:30-14:35

3 stops31h 05m

£764

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Mon 8/6

21:45-21:35

2 stops17h 50m

Ko Samui

Sun 14/6

17:50-12:45

2 stops24h 55m

£774

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Mon 27/4

21:10-21:35

2 stops18h 25m

Ko Samui

Sun 10/5

20:50-12:45

2 stops21h 55m

£777
Fastest return journey

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Sun 10/5

20:45-21:35

2 stops18h 50m

Ko Samui

Thu 14/5

06:00-18:45

2 stops18h 45m

£785

LondonKo Samui

STN - USM

STNUSM

London Stansted

Mon 18/5

16:25-21:35

3 stops23h 10m

Ko Samui

Tue 25/8

08:40-11:05

3 stops32h 25m

£787

LondonKo Samui

LTN - USM

LTNUSM

London Luton

Thu 1/10

15:50-21:35

3 stops23h 45m

Ko Samui

Sat 31/10

08:55-14:25

3 stops36h 30m

£789

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Fri 1/5

14:45-20:25

2 stops23h 40m

Ko Samui

Wed 13/5

15:20-07:00

2 stops21h 40m

£798

Flights are sorted by cheapest return flights first.

Deals found on 5/4

Showing 1-10 of 60 resultsSorted by cheapest first
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2
3
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6

Best time to book a flight from United Kingdom to Ko Samui

Have a flexible travel schedule? Discover the best time to fly to Ko Samui from United Kingdom 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 the United Kingdom to Ko Samui

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

Currently, January is the cheapest month in which you can book a flight from United Kingdom to Ko Samui (average of £258). Flying from United Kingdom to Ko Samui in August is currently the most expensive (average of £675). 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.

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

Find hourly flight availability from United Kingdom to Ko Samui. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 10 April 2026.

It’s typically best to fly out from United Kingdom to Ko Samui at midday. Doing so could potentially save you 27% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from United Kingdom to Ko Samui?

Use this chart to determine the cheapest time to fly return from United Kingdom to Ko Samui. Price data was last updated on 30 March 2025.

Travellers seeking maximum savings on their United Kingdom to Ko Samui flight should consider departing on Wednesday at midday when fares are most often at their lowest. Tuesday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

How often are flights from the United Kingdom to Ko Samui delayed?

About 9% of weekly flights between United Kingdom and Ko Samui have experienced delays in the past year, with the average delay time being 153 minutes.

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

Historically, flights departing at night 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 Sunday has historically faced a higher average of delays compared to other days of the week.

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

Over the past year, Virgin Atlantic have had the lowest number of delays on this route, with just 4% of flights being delayed.

Reviews of airlines servicing Ko Samui

Get insights into the airlines that provide service to Ko Samui. 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 Ko Samui. Reviews last updated 10 April 2026.
Check out reviews from past customers who have flown with EVA Air,Singapore Airlines, andThai Airways from the United Kingdom 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
1,401 reviews
Check prices

Comfort

8.3

Overall

8.5

Crew

8.7

Boarding

8.4

Entertainment

8.0

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?
EVA Air
8.5
Very Good
1,401 reviews
EVA Air
8.5
Very Good
1,401 reviews
Check prices

Comfort

8.3

Overall

8.5

Crew

8.7

Boarding

8.4

Entertainment

8.0

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?
Singapore Airlines
8.2
Very Good
1,491 reviews
EVA Air
8.5
Very Good
1,401 reviews
Check prices

Comfort

8.3

Overall

8.5

Crew

8.7

Boarding

8.4

Entertainment

8.0

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?
Thai Airways
7.8
Good
396 reviews
EVA Air
8.5
Very Good
1,401 reviews
Check prices

Comfort

8.3

Overall

8.5

Crew

8.7

Boarding

8.4

Entertainment

8.0

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?
KLM
7.7
Good
1,493 reviews
EVA Air
8.5
Very Good
1,401 reviews
Check prices

Comfort

8.3

Overall

8.5

Crew

8.7

Boarding

8.4

Entertainment

8.0

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?
Qatar Airways
7.4
Good
3,727 reviews
EVA Air
8.5
Very Good
1,401 reviews
Check prices

Comfort

8.3

Overall

8.5

Crew

8.7

Boarding

8.4

Entertainment

8.0

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Ko Samui. 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 into for flights to Ko Samui from United Kingdom?

    Ko Samui (USM), located 2.1 mi from the city center, is the airport you fly into when you book flights from United Kingdom to Ko Samui.

  • How long is the flight from United Kingdom to Ko Samui?

    Departing from United Kingdom to Ko Samui will take you 17h 50m. United Kingdom and Ko Samui are separated by a distance of 6144 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    £254 is the cheapest one-way deal found within the past few days, from Lufthansa. You may also be able to find cheap deals on Qatar Airways and Etihad Airways, with prices starting from £449 and £470, respectively.

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

    Most travelers choose London Heathrow - Ko Samui, London Gatwick - Ko Samui or London Stansted - Ko Samui when deciding on the best route from United Kingdom to Ko Samui.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Ko Samui?

    Currently, January is the cheapest month in which you can book a flight from United Kingdom to Ko Samui (average of £258). Flying from United Kingdom to Ko Samui in August is currently the most expensive (average of £675). 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
Ko Pha Ngan
Ko Tao
Khanom

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Alternative routes for United Kingdom to Ko Samui

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Suvarnabhumi flights
Gatwick to Suvarnabhumi flights
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Gatwick to Don Mueang Intl flights
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Gatwick to Phuket City flights
London City to Phuket City flights
Birmingham to Suvarnabhumi flights
Manchester to Don Mueang Intl flights
Newcastle upon Tyne to Suvarnabhumi flights
Edinburgh to Suvarnabhumi flights
Manchester to Phuket City flights
Luton to Phuket City flights
Glasgow Intl to Suvarnabhumi flights
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Southend to Suvarnabhumi flights
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Stansted to Ko Samui flights
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London City to Ko Samui flights
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Belfast City to Suvarnabhumi flights
Stansted to Chiang Mai flights
Leeds to Suvarnabhumi flights
Manchester to Ko Samui flights
Newcastle upon Tyne to Don Mueang Intl flights
Heathrow to Krabi flights
Gatwick to Krabi flights
Stansted to Krabi flights
Birmingham to Phuket City flights
Amsterdam to Suvarnabhumi flights
London City to Chiang Mai flights
Aberdeen to Suvarnabhumi flights
Bristol to Suvarnabhumi flights
Edinburgh to Don Mueang Intl flights
Manchester to Krabi flights
Luton to Ko Samui flights
Linate to Suvarnabhumi flights
Cardiff to Suvarnabhumi flights

Top 10 airlines flying from United Kingdom to Ko Samui

Discover the top 10 airlines that operate flights from United Kingdom to Ko Samui. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 10 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest£114Average£142FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Air IndiaCheapest£434Average£491FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
Etihad AirwaysCheapest£439Average£823FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Austrian AirlinesCheapest£591Average£683FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
LufthansaCheapest£602Average£734FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
SWISSCheapest£606Average£726FlexibilityNo cancel feeOn-time79%
Search SWISS flights
KLMCheapest£634Average£939FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£657Average£1,145FlexibilityNo cancel feeOn-time77%
Search Air France flights
British AirwaysCheapest£724Average£1,108FlexibilityNo cancel feeOn-time70%
Search British Airways flights
EVA AirCheapest£724Average£830FlexibilityNo cancel feeOn-time74%
Search EVA Air flights

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 United Kingdom to Ko Samui?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from United Kingdom to Ko Samui. 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 United Kingdom to Ko Samui?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from United Kingdom to Ko Samui for you. Better yet — we are completely free to use.

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

Need flexible booking options for your flight to Ko Samui from United Kingdom? 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 United Kingdom to Ko Samui become cheaper?

Yes, Cheapflights offers price alerts on United Kingdom to Ko Samui flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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