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£328+ 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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
— USM
1 Jul — 8 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 1 June 2026.

Sat 29/811:35
LGW
-
USM
2 stops23h 00m
Multiple Airlines
Sat 12/917:25
USM
-
LGW
2 stops19h 30m
Multiple Airlines
Deal found 27/5£773
Fri 20/1115:45
LHR
-
USM
2 stops22h 20m
Multiple Airlines
Fri 4/1208:30
USM
-
LHR
2 stops19h 55m
Multiple Airlines
Deal found 28/5£773
Mon 8/620:45
LHR
-
USM
2 stops29h 30m
Etihad Airways
Mon 22/619:00
USM
-
LHR
2 stops26h 05m
Etihad Airways
Deal found 29/5£774
Sun 7/610:00
LHR
-
USM
2 stops20h 45m
Multiple Airlines
Wed 17/617:05
USM
-
LHR
2 stops19h 50m
Multiple Airlines
Deal found 30/5£775
Mon 7/909:00
LGW
-
USM
2 stops19h 30m
Qatar Airways
Thu 24/914:30
USM
-
LGW
2 stops22h 10m
Qatar Airways
Deal found 30/5£776
Tue 1/920:50
LHR
-
USM
2 stops33h 05m
Oman Air
Mon 14/908:00
USM
-
LHR
2 stops41h 10m
Oman Air
Deal found 30/5£777
Mon 15/610:00
LHR
-
USM
2 stops21h 10m
Multiple Airlines
Sun 28/617:25
USM
-
LHR
2 stops19h 30m
Multiple Airlines
Deal found 27/5£779
Sat 21/1116:25
LHR
-
USM
2 stops21h 40m
KLM
Thu 3/1208:30
USM
-
LHR
2 stops19h 20m
KLM
Deal found 30/5£779
Wed 30/920:45
LHR
-
USM
2 stops28h 25m
Etihad Airways
Wed 14/1006:00
USM
-
LHR
2 stops18h 45m
Etihad Airways
Deal found 29/5£780
Wed 30/920:45
LHR
-
USM
2 stops28h 25m
Etihad Airways
Thu 15/1006:00
USM
-
LHR
2 stops18h 45m
Etihad Airways
Deal found 28/5£781
Thu 25/605:45
STN
-
USM
3 stops32h 45m
Multiple Airlines
Mon 6/708:40
USM
-
STN
3 stops45h 15m
Multiple Airlines
Deal found 27/5£782
Mon 31/809:00
LGW
-
USM
2 stops23h 40m
Qatar Airways
Thu 1/1012:10
USM
-
LGW
2 stops24h 30m
Qatar Airways
Deal found 27/5£783

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 1 June 2026.

Return from

£773

One-way from

£328

Popular in

December

Cheapest in

November

Average price

£816
29/8-12/9
  • 29/8-12/9
  • 4 total stops
  • 42h 30m total
  • London to Ko Samui
Search Deals
12/9
  • 12/9
  • 2 total stops
  • 28h 50m total
  • London to Ko Samui
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£89 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£39 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 1 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

LHR - USM

LHRUSM

London Heathrow

Sat 29/8

08:25-10:45

2 stops20h 20m

Ko Samui

Sun 13/9

15:25-06:30

2 stops21h 05m

£798

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Tue 22/9

09:25-12:45

2 stops21h 20m

Ko Samui

Mon 28/9

16:25-08:25

2 stops22h 00m

£799

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Mon 31/8

09:00-18:00

2 stops27h 00m

Ko Samui

Fri 2/10

15:25-06:40

2 stops21h 15m

£810

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Mon 7/9

09:00-10:30

2 stops19h 30m

Ko Samui

Mon 21/9

17:55-06:40

2 stops18h 45m

£816

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Fri 19/6

14:45-18:00

2 stops21h 15m

Ko Samui

Sun 28/6

19:00-12:45

2 stops23h 45m

£825

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Wed 23/9

20:50-11:15

2 stops32h 25m

Ko Samui

Fri 2/10

17:55-06:30

2 stops18h 35m

£825

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Sun 20/9

18:35-21:10

2 stops20h 35m

Ko Samui

Sun 27/9

09:15-08:25

2 stops29h 10m

£839

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Sat 19/9

09:25-12:45

2 stops21h 20m

Ko Samui

Mon 28/9

16:25-08:25

2 stops22h 00m

£839

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Mon 7/9

09:00-10:30

2 stops19h 30m

Ko Samui

Sun 27/9

17:55-06:40

2 stops18h 45m

£842

LondonKo Samui

LCY - USM

LCYUSM

London City

Tue 22/9

13:10-12:45

2 stops17h 35m

Ko Samui

Tue 29/9

09:15-08:40

2 stops29h 25m

£847

Flights are sorted by cheapest return flights first.

Deals found on 27/5

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 19 hours 8 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 £762
EVA Air
EVA Air
From £702
Singapore Airlines
Singapore Airlines
From £742
Qatar Airways
Qatar Airways
From £751

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 1 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
1,465 reviews
Check prices

Entertainment

8.0

Boarding

8.4

Overall

8.5

Food

8.1

Crew

8.7

Comfort

8.3

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
1,465 reviews
EVA Air
8.5
Very Good
1,465 reviews
Check prices

Entertainment

8.0

Boarding

8.4

Overall

8.5

Food

8.1

Crew

8.7

Comfort

8.3

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
1,527 reviews
EVA Air
8.5
Very Good
1,465 reviews
Check prices

Entertainment

8.0

Boarding

8.4

Overall

8.5

Food

8.1

Crew

8.7

Comfort

8.3

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
404 reviews
EVA Air
8.5
Very Good
1,465 reviews
Check prices

Entertainment

8.0

Boarding

8.4

Overall

8.5

Food

8.1

Crew

8.7

Comfort

8.3

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
7.4
Good
3,731 reviews
EVA Air
8.5
Very Good
1,465 reviews
Check prices

Entertainment

8.0

Boarding

8.4

Overall

8.5

Food

8.1

Crew

8.7

Comfort

8.3

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
8,014 reviews
EVA Air
8.5
Very Good
1,465 reviews
Check prices

Entertainment

8.0

Boarding

8.4

Overall

8.5

Food

8.1

Crew

8.7

Comfort

8.3

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 £58, while return flights cost around £105.

  • How much is a return flight to Ko Samui?

    A return flight to Ko Samui will typically cost around £157, however they can be found for as little as £105.

  • 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 55 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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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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