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£320+ 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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
— USM
23 Jul — 30 Jul1
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 23 June 2026.

Tue 1/909:00
LHR
-
USM
2 stops25h 35m
Multiple Airlines
Tue 29/916:25
USM
-
LHR
2 stops21h 30m
Multiple Airlines
Deal found 22/6£704
Wed 4/1110:30
LGW
-
USM
2 stops24h 10m
Multiple Airlines
Thu 26/1107:00
USM
-
LGW
1 stop21h 05m
Multiple Airlines
Deal found 20/6£705
Tue 3/1112:40
LGW
-
USM
1 stop14h 55m
Multiple Airlines
Tue 24/1121:30
USM
-
LGW
1 stop25h 05m
Multiple Airlines
Deal found 20/6£706
Mon 30/1111:30
LHR
-
USM
2 stops26h 35m
Multiple Airlines
Wed 16/1209:20
USM
-
LHR
2 stops19h 20m
Multiple Airlines
Deal found 23/6£706
Tue 8/906:00
LTN
-
USM
3 stops32h 50m
Multiple Airlines
Wed 23/907:50
USM
-
LTN
3 stops36h 10m
Multiple Airlines
Deal found 19/6£706
Tue 8/913:10
LCY
-
USM
2 stops18h 35m
SWISS
Tue 6/1016:25
USM
-
LCY
2 stops22h 15m
SWISS
Deal found 23/6£706
Wed 30/920:05
LHR
-
USM
2 stops34h 40m
SWISS
Thu 15/1009:15
USM
-
LHR
2 stops18h 30m
SWISS
Deal found 23/6£706
Sun 13/919:30
LHR
-
USM
2 stops16h 15m
Multiple Airlines
Mon 21/909:15
USM
-
LHR
2 stops18h 30m
Multiple Airlines
Deal found 21/6£709
Mon 2/1119:05
LCY
-
USM
2 stops19h 00m
SWISS
Mon 9/1110:00
USM
-
LCY
2 stops29h 40m
SWISS
Deal found 19/6£711
Tue 8/919:30
LHR
-
USM
2 stops16h 15m
Austrian Airlines
Sat 19/919:45
USM
-
LHR
2 stops18h 35m
Austrian Airlines
Deal found 21/6£711
Mon 7/913:50
LHR
-
USM
2 stops17h 20m
SWISS
Mon 14/909:15
USM
-
LHR
2 stops28h 40m
SWISS
Deal found 21/6£712
Sat 12/920:25
LHR
-
USM
2 stops38h 10m
Lufthansa
Sun 27/913:30
USM
-
LHR
2 stops25h 10m
Lufthansa
Deal found 22/6£713

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 23 June 2026.

Return from

£704

One-way from

£317

Popular in

December

Cheapest in

November

Average price

£828
SWISS
  • SWISS
  • 1/9-29/9
  • 4 total stops
  • 47h 05m total
  • London to Ko Samui
Search Deals
27/8
  • 27/8
  • 2 total stops
  • 35h 05m total
  • London to Ko Samui
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£90 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£38 potential savings vs. average return price).
Search Deals
Average for return flights in June 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 23 June 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

LTN - USM

LTNUSM

London Luton

Tue 8/9

06:00-20:50

3 stops32h 50m

Ko Samui

Wed 23/9

07:50-14:00

3 stops36h 10m

£706

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Sat 19/9

09:25-12:45

2 stops21h 20m

Ko Samui

Wed 30/9

09:15-08:25

2 stops29h 10m

£719

LondonKo Samui

LCY - USM

LCYUSM

London City

Thu 3/9

13:10-13:45

2 stops18h 35m

Ko Samui

Thu 17/9

09:15-08:40

2 stops29h 25m

£725

LondonKo Samui

LCY - USM

LCYUSM

London City

Fri 11/9

13:10-12:45

2 stops17h 35m

Ko Samui

Sun 20/9

09:15-07:25

2 stops28h 10m

£727

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Thu 3/9

09:25-12:45

2 stops21h 20m

Ko Samui

Thu 17/9

09:15-08:25

2 stops29h 10m

£750

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Sun 13/9

09:05-12:45

2 stops21h 40m

Ko Samui

Mon 21/9

09:15-08:25

2 stops29h 10m

£751

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Sun 13/9

09:05-12:45

2 stops21h 40m

Ko Samui

Sun 20/9

09:15-08:25

2 stops29h 10m

£751

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Sat 19/9

09:25-12:45

2 stops21h 20m

Ko Samui

Sat 26/9

08:45-08:20

2 stops29h 35m

£751

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Sat 12/9

09:25-12:45

2 stops21h 20m

Ko Samui

Mon 21/9

09:15-08:25

2 stops29h 10m

£751

LondonKo Samui

LTN - USM

LTNUSM

London Luton

Sat 5/12

17:05-18:50

3 stops42h 45m

Ko Samui

Wed 6/1

08:55-21:40

3 stops43h 45m

£755

Flights are sorted by cheapest return flights first.

Deals found on 20/6

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
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 6 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 £771
EVA Air
EVA Air
From £712
Qatar Airways
Qatar Airways
From £764
Singapore Airlines
Singapore Airlines
From £755

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 72 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 23 June 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
1,481 reviews
Check prices

Entertainment

8.0

Overall

8.5

Comfort

8.3

Boarding

8.4

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!
EVA Air
8.5
Very Good
1,481 reviews
EVA Air
8.5
Very Good
1,481 reviews
Check prices

Entertainment

8.0

Overall

8.5

Comfort

8.3

Boarding

8.4

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!
Singapore Airlines
8.2
Very Good
1,549 reviews
EVA Air
8.5
Very Good
1,481 reviews
Check prices

Entertainment

8.0

Overall

8.5

Comfort

8.3

Boarding

8.4

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!
Thai Airways
7.9
Good
407 reviews
EVA Air
8.5
Very Good
1,481 reviews
Check prices

Entertainment

8.0

Overall

8.5

Comfort

8.3

Boarding

8.4

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!
Qatar Airways
7.3
Good
3,730 reviews
EVA Air
8.5
Very Good
1,481 reviews
Check prices

Entertainment

8.0

Overall

8.5

Comfort

8.3

Boarding

8.4

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!
British Airways
6.7
Okay
8,067 reviews
EVA Air
8.5
Very Good
1,481 reviews
Check prices

Entertainment

8.0

Overall

8.5

Comfort

8.3

Boarding

8.4

Crew

8.7

Food

8.1

Reviews

1 / 20
10.0
Excellent

Daisy,May 2026

SFO - TPE

This ways excellent experience when I took the EVA airline. We will take EVA again!

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 £59, while return flights cost around £118.

  • How much is a return flight to Ko Samui?

    A return flight to Ko Samui will typically cost around £417, however they can be found for as little as £118.

  • 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 (16 hours 15 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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Fly with Cheapflights

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How does Cheapflights help users find flights to Ko Samui?

Deals for Ko Samui flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose to your preference, such as price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets to Ko Samui?

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

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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