Cheap flights from the United Kingdom to Ko Samui from £276

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 13/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — USM
16 Jan — 23 Jan1
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 17 December 2025.

Wed 31/1210:30LGW - USM
2 stops23h 30mMultiple Airlines
Sat 10/120:30USM - LGW
3 stops32h 30mMultiple Airlines
Deal found 16/12£869
Wed 31/1210:15MAN - USM
2 stops19h 20mMultiple Airlines
Wed 21/113:25USM - MAN
2 stops24h 10mMultiple Airlines
Deal found 16/12£936
Fri 26/1210:00LGW - USM
2 stops38h 50mMultiple Airlines
Fri 23/111:40USM - LGW
2 stops25h 15mMultiple Airlines
Deal found 16/12£961
Wed 31/1208:40LHR - USM
3 stops20h 55mMultiple Airlines
Sat 10/118:30USM - LHR
2 stops31h 50mMultiple Airlines
Deal found 16/12£968
Mon 29/1217:25STN - USM
3 stops42h 25mMultiple Airlines
Fri 9/107:15USM - STN
3 stops47h 55mMultiple Airlines
Deal found 16/12£974
Mon 29/1217:25STN - USM
3 stops42h 25mMultiple Airlines
Thu 8/109:20USM - STN
3 stops43h 35mMultiple Airlines
Deal found 16/12£986
Wed 31/1206:30LTN - USM
3 stops23h 05mMultiple Airlines
Sat 10/108:55USM - LTN
3 stops45h 20mMultiple Airlines
Deal found 16/12£995
Mon 15/1211:25LGW - USM
1 stop18h 25mMultiple Airlines
Mon 22/1207:45USM - LGW
1 stop17h 45mMultiple Airlines
Deal found 14/12£1,017
Mon 29/1222:05LHR - USM
1 stop38h 30mCathay Pacific
Mon 19/111:40USM - LHR
1 stop34h 20mCathay Pacific
Deal found 14/12£1,018
Mon 29/1213:55LHR - USM
2 stops34h 15mEtihad Airways
Mon 19/113:25USM - LHR
2 stops24h 15mEtihad Airways
Deal found 15/12£1,049
Wed 24/1219:30LTN - USM
2 stops29h 30mMultiple Airlines
Wed 31/1218:05USM - LTN
2 stops31h 35mMultiple Airlines
Deal found 13/12£1,052
Fri 19/1208:25LHR - USM
2 stops19h 10mMultiple Airlines
Tue 17/221:10USM - LHR
2 stops23h 50mMultiple Airlines
Deal found 15/12£1,056

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 17 December 2025.

Round-trip from

£631

One-way from

£276

Popular in

December

Cheapest in

May

Average price

£1,174
11/3-17/3
  • 11/3-17/3
  • 3 total stops
  • 52h 30m total
  • United Kingdom to Ko Samui
13/3
  • 13/3
  • 2 total stops
  • 36h 45m total
  • United Kingdom to Ko Samui
Highest demand for flights based on searches. 5% potential increase in price (£35 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£19 potential savings vs. average return price).
Average for round-trip flights in December 2025

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 17 December 2025.
Use the filters below to find and compare flights from the United Kingdom to Ko Samui that are best for you.

Fly from

United Kingdom

Fly to

Ko Samui

Route

Depart

Return

Price

ManchesterKo Samui

MAN - USM

MANUSM

Manchester

Wed 6/5

10:35-16:50

2 stops24h 15m

Ko Samui

Mon 25/5

16:25-17:10

2 stops30h 45m

£690

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Tue 2/6

14:45-21:35

2 stops24h 50m

Ko Samui

Wed 24/6

20:50-15:15

2 stops24h 25m

£744

ManchesterKo Samui

MAN - USM

MANUSM

Manchester

Fri 29/5

18:40-21:10

2 stops20h 30m

Ko Samui

Sun 14/6

16:25-08:15

2 stops21h 50m

£750

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Thu 30/4

21:45-07:10

2 stops27h 25m

Ko Samui

Sat 9/5

20:35-15:15

2 stops48h 40m

£752

BirminghamKo Samui

BHX - USM

BHXUSM

Birmingham

Mon 26/1

06:00-13:05

2 stops24h 05m

Ko Samui

Mon 2/2

13:25-17:50

2 stops35h 25m

£752

LondonKo Samui

LTN - USM

LTNUSM

London Luton

Sat 31/1

06:15-15:40

3 stops26h 25m

Ko Samui

Sat 7/2

15:05-23:15

3 stops39h 10m

£759

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Sat 6/6

20:55-10:30

2 stops31h 35m

Ko Samui

Sun 21/6

14:30-15:15

2 stops30h 45m

£760

ManchesterKo Samui

MAN - USM

MANUSM

Manchester

Mon 11/5

20:45-07:10

2 stops28h 25m

Ko Samui

Fri 22/5

17:55-13:15

2 stops25h 20m

£771

BirminghamKo Samui

BHX - USM

BHXUSM

Birmingham

Sun 1/3

14:30-18:15

2 stops44h 45m

Ko Samui

Sun 15/3

11:40-12:50

2 stops32h 10m

£774

LondonKo Samui

LCY - USM

LCYUSM

London City

Wed 10/6

19:15-21:10

2 stops19h 55m

Ko Samui

Fri 26/6

10:05-08:25

2 stops28h 20m

£787

Flights are sorted by cheapest return flights first.

Deals found on 16/12

Showing 1-10 of 60 results
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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, December is the cheapest month in which you can book a flight from United Kingdom to Ko Samui (average of £342). Flying from United Kingdom to Ko Samui in February is currently the most expensive (average of £706). 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 17 December 2025.

It’s typically best to fly out from United Kingdom to Ko Samui in the afternoon. Doing so could potentially save you 10% 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 16 December 2024.

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. Sunday evenings 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 11% of weekly flights between United Kingdom and Ko Samui have experienced delays in the past year, with the average delay time being 158 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?

Tuesday 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 5% 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 17 December 2025.
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.

Food

8.1

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

Food

8.1

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

Food

8.1

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

Food

8.1

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

Food

8.1

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

Food

8.1

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Crew

8.6

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

TPE - CRK

All was okay except for the medical emergency that happened before our boarding. I wish that the medical emergency response was more immediate.

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 19h 55m. United Kingdom and Ko Samui are separated by a distance of 6123 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?

    £449 is the cheapest one-way deal found within the past few days, from Qatar Airways. You may also be able to find cheap deals on Etihad Airways and Singapore Airlines, with prices starting from £482 and £490, respectively.

  • What are the most popular routes 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, December is the cheapest month in which you can book a flight from United Kingdom to Ko Samui (average of £342). Flying from United Kingdom to Ko Samui in February is currently the most expensive (average of £706). 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

Browse thousands of different options on Cheapflights for your next trip

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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.

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 17 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest£114Average£143FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Air IndiaCheapest£474Average£492FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
LufthansaCheapest£557Average£735FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Austrian AirlinesCheapest£601Average£698FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
SWISSCheapest£606Average£716FlexibilityNo cancel feeOn-time79%
Search SWISS flights
KLMCheapest£635Average£931FlexibilityNo cancel feeOn-time75%
Search KLM flights
Etihad AirwaysCheapest£646Average£852FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Air FranceCheapest£658Average£1,003FlexibilityNo cancel feeOn-time77%
Search Air France flights
EVA AirCheapest£728Average£825FlexibilityNo cancel feeOn-time74%
Search EVA Air flights
Turkish AirlinesCheapest£728Average£845FlexibilityNo cancel feeOn-time77%
Search Turkish Airlines 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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