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£268+ Cheap flights to Ko Samui

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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
— USM
11 Sep — 18 Sep1
1 adult
1 adult, Economy, 0 bags

Flights to Ko Samui in 2026

Enter your travel dates to find the best prices.

Cheapest flights to Ko Samui
Explore the most affordable flight options available to Ko Samui. Find the lowest fares based on data from user searches, with prices last updated on 12 August 2026.

Sun 1/1112:05 -
2 stops20h 05m
Fri 13/1110:00 -
2 stops18h 40m
Deal found 7/8£677
Tue 17/1117:45 -
2 stops20h 20m
Sun 22/1116:25 -
2 stops23h 15m
Deal found 8/8£678
Tue 24/1109:00 -
2 stops19h 55m
Thu 17/1210:00 -
2 stops18h 40m
Deal found 8/8£678
Tue 17/1117:45 -
2 stops20h 20m
Tue 24/1116:25 -
2 stops23h 15m
Deal found 9/8£680
Sun 1/1109:00 -
2 stops23h 10m
Mon 16/1110:00 -
2 stops29h 05m
Deal found 11/8£680
Mon 21/910:20 -
2 stops25h 25m
Mon 28/910:05 -
2 stops34h 35m
Deal found 7/8£680
Mon 30/1106:00 -
2 stops26h 35m
Wed 16/1209:20 -
2 stops29h 45m
Deal found 10/8£680
Fri 25/907:15 -
3 stops28h 05m
Fri 2/1019:45 -
3 stops34h 00m
Deal found 10/8£683
Sun 6/914:45 -
2 stops20h 10m
Fri 18/908:00 -
2 stops40h 45m
Deal found 9/8£683
Wed 30/906:00 -
2 stops32h 30m
Wed 14/1020:35 -
2 stops17h 45m
Deal found 8/8£684
Mon 14/922:00 -
2 stops30h 30m
Thu 24/915:25 -
2 stops21h 30m
Deal found 9/8£685
Wed 30/906:00 -
2 stops32h 30m
Thu 15/1020:35 -
2 stops17h 45m
Deal found 10/8£685

Find flight deals to Ko Samui

Find the latest flights to Ko Samui in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 12 August 2026.

Return from

£677

One-way from

£268

Popular in

December

Cheapest in

November

Average price

£967
SWISS
  • SWISS
  • 1/11-13/11
  • 4 total stops
  • 38h 45m total
  • London to Ko Samui
Search Deals
8/9
  • 8/9
  • 3 total stops
  • 55h 50m total
  • London to Ko Samui
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£114 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£45 potential savings vs. average return price).
Search Deals
Average for return flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Locate flights to Ko Samui that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 12 August 2026.
Use the filters below to find and compare flights to Ko Samui that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonKo Samui

LCY London City - USM Ko Samui

LCYUSM

London City

Sun 1/11

13:20-15:10

2 stops18h 50m

Ko Samui

Sun 8/11

10:00-08:40

2 stops29h 40m

£702

LondonKo Samui

LHR London Heathrow - USM Ko Samui

LHRUSM

London Heathrow

Mon 14/9

10:00-15:25

2 stops23h 25m

Ko Samui

Tue 22/9

15:25-06:55

2 stops21h 30m

£744

LondonKo Samui

LTN London Luton - USM Ko Samui

LTNUSM

London Luton

Thu 1/10

06:20-18:50

3 stops30h 30m

Ko Samui

Fri 30/10

08:55-19:45

3 stops41h 50m

£746

LondonKo Samui

LTN London Luton - USM Ko Samui

LTNUSM

London Luton

Thu 10/9

07:00-18:50

3 stops29h 50m

Ko Samui

Wed 23/9

11:05-19:55

3 stops38h 50m

£751

LondonKo Samui

LTN London Luton - USM Ko Samui

LTNUSM

London Luton

Tue 17/11

07:45-18:50

3 stops28h 05m

Ko Samui

Sun 22/11

08:55-21:25

3 stops43h 30m

£758

LondonKo Samui

LTN London Luton - USM Ko Samui

LTNUSM

London Luton

Mon 2/11

06:10-18:50

3 stops29h 40m

Ko Samui

Wed 18/11

18:05-18:30

3 stops31h 25m

£765

LondonKo Samui

STN London Stansted - USM Ko Samui

STNUSM

London Stansted

Sat 14/11

15:00-18:50

3 stops44h 50m

Ko Samui

Sat 28/11

18:05-12:45

2 stops25h 40m

£766

LondonKo Samui

STN London Stansted - USM Ko Samui

STNUSM

London Stansted

Sun 1/11

06:30-18:50

3 stops29h 20m

Ko Samui

Sun 8/11

08:55-23:45

3 stops45h 50m

£769

LondonKo Samui

LGW London Gatwick - USM Ko Samui

LGWUSM

London Gatwick

Mon 31/8

18:35-21:10

2 stops20h 35m

Ko Samui

Wed 16/9

09:15-08:25

2 stops29h 10m

£776

LondonKo Samui

LTN London Luton - USM Ko Samui

LTNUSM

London Luton

Fri 16/10

06:20-17:20

3 stops29h 00m

Ko Samui

Sun 25/10

18:05-14:55

3 stops27h 50m

£776

Flights are sorted by cheapest return flights first.

Deals found on 7/8

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

Best time to book a flight to Ko Samui

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

How long is the flight to Ko Samui?

On average, a flight from London to Ko Samui takes 18 hours 0 minutes. Flights to Ko Samui from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

What are the most popular airlines that fly to Ko Samui?

The most popular airlines flying from London to Ko Samui are Thai Airways, EVA Air and Singapore Airlines.

Thai Airways
Thai Airways
From £764
EVA Air
EVA Air
From £694
Qatar Airways
Qatar Airways
From £749
Singapore Airlines
Singapore Airlines
From £739

What are the cheapest airlines that fly to Ko Samui?

The cheapest airlines flying from London to Ko Samui are Bangkok Airways, Oman Air and Austrian Airlines.

Rainfall in Ko Samui by month

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

In terms of precipitation, rainfall in Ko Samui ranges from 58.0 - 490.0 inches per month. November is typically the wettest month, when rainfall can reach 490.0 mm. February is typically the driest time to visit Ko Samui when rainfall is around 58.0 mm.

Temperature in Ko Samui by month

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

If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 27.0 C).

When is the best time to book a flight to Ko Samui?

To ensure you get the cheapest price possible for a flight to Ko Samui, you should look to book at least 26 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 12 August 2026.
See what other customers who have flown with EVA Air,Singapore Airlines, andThai Airways to Thailand have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.5
Very Good
1,515 reviews
Check prices

Comfort

8.3

Crew

8.7

Entertainment

8.0

Food

8.1

Overall

8.5

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

What about midnight snacks to add? Used to have that before..
EVA Air
8.5
Very Good
1,515 reviews
EVA Air
8.5
Very Good
1,515 reviews
Check prices

Comfort

8.3

Crew

8.7

Entertainment

8.0

Food

8.1

Overall

8.5

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

What about midnight snacks to add? Used to have that before..
Singapore Airlines
8.2
Very Good
1,584 reviews
EVA Air
8.5
Very Good
1,515 reviews
Check prices

Comfort

8.3

Crew

8.7

Entertainment

8.0

Food

8.1

Overall

8.5

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

What about midnight snacks to add? Used to have that before..
Thai Airways
7.9
Good
414 reviews
EVA Air
8.5
Very Good
1,515 reviews
Check prices

Comfort

8.3

Crew

8.7

Entertainment

8.0

Food

8.1

Overall

8.5

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

What about midnight snacks to add? Used to have that before..
Qatar Airways
7.4
Good
3,744 reviews
EVA Air
8.5
Very Good
1,515 reviews
Check prices

Comfort

8.3

Crew

8.7

Entertainment

8.0

Food

8.1

Overall

8.5

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

What about midnight snacks to add? Used to have that before..
British Airways
6.7
Okay
8,160 reviews
EVA Air
8.5
Very Good
1,515 reviews
Check prices

Comfort

8.3

Crew

8.7

Entertainment

8.0

Food

8.1

Overall

8.5

Boarding

8.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

CRK - TPE

What about midnight snacks to add? Used to have that before..

FAQs about flying to Ko Samui

  • What airport do you fly into for flights to Ko Samui?

    Booking a flight to Ko Samui (USM) is your only option if you intend on flying to Ko Samui. It is only a 2.1 mi journey from Ko Samui to Ko Samui’s city center.

  • Can I find cheaper flights to Ko Samui if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Ko Samui on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Ko Samui?

    Based on reviews from Cheapflights users, Bangkok Airways is rated the highest out of the airlines that fly to Ko Samui.

  • What is the cheapest airport to fly to in Ko Samui?

    Ko Samui is currently the cheapest airport to fly to in Ko Samui. One-way flights to Ko Samui typically cost £56, while return flights cost around £121.

  • How much is a return flight to Ko Samui?

    A return flight to Ko Samui will typically cost around £210, however they can be found for as little as £121.

  • Where does the fastest flight to Ko Samui depart from?

    For those looking to save time traveling to Ko Samui, London offers the quickest one-way flight (15 hours 35 minutes).

  • Does Ko Samui have car hire?

    Yes. Those touching down at Ko Samui can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Ko Samui?

    Yes. Ko Samui has hotels nearby for those requiring accommodations. Diamond Pool Villa Samui is the closest property to Ko Samui (0.0 mi away from Ko Samui).

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

Cheapflights does show flights with no change fees to all users. To see these options for flights to Ko Samui, users can toggle the no change fees filter when performing a flight search.

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