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Cheap flights from the United Kingdom to Ko Samui from £269

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — USM
26 Mar — 2 Apr1
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 24 February 2026.

Wed 3/608:50
BHX
-
USM
2 stops22h 55m
SWISS
Thu 25/610:05
USM
-
BHX
2 stops28h 00m
SWISS
Deal found 21/2£628
Thu 16/412:50
MAN
-
USM
3 stops36h 55m
Multiple Airlines
Thu 30/406:00
USM
-
MAN
2 stops34h 05m
Multiple Airlines
Deal found 23/2£654
Sun 14/618:15
BHX
-
USM
2 stops36h 55m
Multiple Airlines
Sun 21/616:25
USM
-
BHX
2 stops21h 40m
Multiple Airlines
Deal found 23/2£677
Mon 9/1117:40
MAN
-
USM
2 stops20h 25m
Lufthansa
Mon 23/1116:25
USM
-
MAN
2 stops31h 30m
Lufthansa
Deal found 22/2£679
Wed 6/514:05
MAN
-
USM
2 stops16h 40m
SWISS
Wed 2/1210:00
USM
-
MAN
2 stops29h 20m
SWISS
Deal found 20/2£681
Mon 14/914:30
MAN
-
USM
2 stops25h 05m
Multiple Airlines
Mon 21/908:10
USM
-
MAN
2 stops28h 45m
Multiple Airlines
Deal found 22/2£687
Wed 3/613:45
MAN
-
USM
2 stops17h 00m
KLM
Thu 25/607:50
USM
-
MAN
2 stops20h 10m
KLM
Deal found 21/2£688
Sun 26/418:40
BHX
-
USM
2 stops20h 30m
Air France
Mon 11/511:55
USM
-
BHX
2 stops27h 35m
Air France
Deal found 23/2£688
Mon 9/1114:05
MAN
-
USM
2 stops24h 00m
SWISS
Mon 23/1116:25
USM
-
MAN
2 stops31h 30m
SWISS
Deal found 23/2£688
Thu 23/417:55
MAN
-
USM
2 stops17h 10m
Lufthansa
Wed 24/616:25
USM
-
MAN
2 stops23h 50m
Lufthansa
Deal found 22/2£689
Wed 6/507:00
MAN
-
USM
2 stops27h 35m
Multiple Airlines
Wed 2/1213:25
USM
-
MAN
2 stops25h 55m
Multiple Airlines
Deal found 21/2£691
Mon 8/618:40
MAN
-
USM
2 stops36h 05m
SWISS
Sun 21/616:25
USM
-
MAN
2 stops21h 50m
SWISS
Deal found 23/2£692

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 24 February 2026.

Round-trip from

£628

One-way from

£269

Popular in

December

Cheapest in

May

Average price

£890
SWISS
  • SWISS
  • 3/6-25/6
  • 4 total stops
  • 50h 55m total
  • United Kingdom to Ko Samui
Search Deals
12/4
  • 12/4
  • 2 total stops
  • 43h 00m total
  • United Kingdom to Ko Samui
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£49 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£27 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 24 February 2026.
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

BirminghamKo Samui

BHX - USM

BHXUSM

Birmingham

Sun 26/4

18:40-21:10

2 stops20h 30m

Ko Samui

Mon 11/5

11:55-09:30

2 stops27h 35m

£688

ManchesterKo Samui

MAN - USM

MANUSM

Manchester

Wed 3/6

11:10-12:45

2 stops19h 35m

Ko Samui

Thu 25/6

09:15-08:25

2 stops29h 10m

£694

BirminghamKo Samui

BHX - USM

BHXUSM

Birmingham

Tue 19/5

08:50-21:10

2 stops30h 20m

Ko Samui

Sun 24/5

18:15-17:40

2 stops29h 25m

£711

GlasgowKo Samui

GLA - USM

GLAUSM

Glasgow Intl

Wed 27/5

09:10-13:45

2 stops22h 35m

Ko Samui

Wed 17/6

07:50-23:10

2 stops21h 20m

£715

EdinburghKo Samui

EDI - USM

EDIUSM

Edinburgh Turnhouse

Sun 26/4

14:50-07:45

3 stops34h 55m

Ko Samui

Sun 17/5

10:05-07:00

2 stops26h 55m

£732

ManchesterKo Samui

MAN - USM

MANUSM

Manchester

Tue 19/5

13:45-13:45

2 stops18h 00m

Ko Samui

Mon 1/6

09:15-08:25

2 stops29h 10m

£760

ManchesterKo Samui

MAN - USM

MANUSM

Manchester

Thu 11/6

09:20-11:15

2 stops19h 55m

Ko Samui

Mon 15/6

17:50-13:00

2 stops25h 10m

£781

LondonKo Samui

LTN - USM

LTNUSM

London Luton

Wed 18/3

06:30-17:50

3 stops28h 20m

Ko Samui

Wed 1/4

17:55-22:40

3 stops34h 45m

£794

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Tue 5/5

20:35-18:50

1 stop16h 15m

Ko Samui

Wed 20/5

08:40-19:30

1 stop16h 50m

£806

LondonKo Samui

LTN - USM

LTNUSM

London Luton

Wed 18/3

06:30-20:25

3 stops30h 55m

Ko Samui

Wed 15/4

15:20-22:40

3 stops37h 20m

£818

Flights are sorted by cheapest return flights first.

Deals found on 21/2

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, January is the cheapest month in which you can book a flight from United Kingdom to Ko Samui (average of £249). Flying from United Kingdom to Ko Samui in August is currently the most expensive (average of £679). 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 24 February 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 11% of weekly flights between United Kingdom and Ko Samui have experienced delays in the past year, with the average delay time being 157 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?

Wednesday 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 24 February 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
8.4
Very Good
1,359 reviews
Check prices

Entertainment

8.0

Overall

8.4

Crew

8.6

Food

8.1

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
1,359 reviews
EVA Air
8.4
Very Good
1,359 reviews
Check prices

Entertainment

8.0

Overall

8.4

Crew

8.6

Food

8.1

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.
Singapore Airlines
8.2
Very Good
1,463 reviews
EVA Air
8.4
Very Good
1,359 reviews
Check prices

Entertainment

8.0

Overall

8.4

Crew

8.6

Food

8.1

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.
Thai Airways
7.8
Good
384 reviews
EVA Air
8.4
Very Good
1,359 reviews
Check prices

Entertainment

8.0

Overall

8.4

Crew

8.6

Food

8.1

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.
KLM
7.7
Good
1,460 reviews
EVA Air
8.4
Very Good
1,359 reviews
Check prices

Entertainment

8.0

Overall

8.4

Crew

8.6

Food

8.1

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.
British Airways
6.7
Okay
7,762 reviews
EVA Air
8.4
Very Good
1,359 reviews
Check prices

Entertainment

8.0

Overall

8.4

Crew

8.6

Food

8.1

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 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 35m. United Kingdom and Ko Samui are separated by a distance of 6185 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?

    £252 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 £446 and £478, 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 £249). Flying from United Kingdom to Ko Samui in August is currently the most expensive (average of £679). 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.
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Birmingham to Ko Samui flights
Frankfurt 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 24 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Bangkok AirwaysCheapest£113Average£142FlexibilityNo cancel feeOn-time74%
Search Bangkok Airways flights
Air IndiaCheapest£431Average£488FlexibilityNo cancel feeOn-timeN/A
Search Air India flights
Etihad AirwaysCheapest£436Average£838FlexibilityNo cancel feeOn-time75%
Search Etihad Airways flights
Austrian AirlinesCheapest£587Average£679FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
LufthansaCheapest£598Average£724FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
SWISSCheapest£602Average£710FlexibilityNo cancel feeOn-time79%
Search SWISS flights
KLMCheapest£630Average£917FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£653Average£1,129FlexibilityNo cancel feeOn-time77%
Search Air France flights
British AirwaysCheapest£719Average£1,097FlexibilityNo cancel feeOn-time70%
Search British Airways flights
EVA AirCheapest£722Average£833FlexibilityNo 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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