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£334+ 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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
— USM
12 Jun — 19 Jun1
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 13 May 2026.

Sat 6/610:00
LHR
-
USM
2 stops20h 45m
Multiple Airlines
Wed 17/615:30
USM
-
LHR
2 stops21h 25m
Multiple Airlines
Deal found 9/5£759
Mon 8/609:15
LGW
-
USM
2 stops25h 40m
Qatar Airways
Wed 24/615:25
USM
-
LGW
2 stops21h 15m
Qatar Airways
Deal found 8/5£760
Wed 30/908:30
LHR
-
USM
2 stops30h 40m
Lufthansa
Thu 15/1009:15
USM
-
LHR
2 stops28h 40m
Lufthansa
Deal found 13/5£760
Mon 16/1110:30
LGW
-
USM
2 stops22h 10m
Multiple Airlines
Tue 24/1121:10
USM
-
LGW
2 stops23h 50m
Multiple Airlines
Deal found 8/5£761
Mon 31/820:50
LHR
-
USM
2 stops35h 05m
Oman Air
Thu 10/908:00
USM
-
LHR
2 stops28h 30m
Oman Air
Deal found 8/5£764
Wed 24/610:00
LHR
-
USM
2 stops20h 45m
Multiple Airlines
Wed 1/715:50
USM
-
LHR
2 stops21h 05m
Multiple Airlines
Deal found 10/5£765
Fri 18/908:10
LGW
-
USM
2 stops21h 30m
Multiple Airlines
Wed 30/907:50
USM
-
LGW
2 stops28h 50m
Multiple Airlines
Deal found 12/5£766
Thu 25/615:40
LGW
-
USM
2 stops23h 55m
Multiple Airlines
Thu 2/717:50
USM
-
LGW
2 stops26h 55m
Multiple Airlines
Deal found 11/5£767
Mon 31/811:35
LGW
-
USM
3 stops26h 50m
Multiple Airlines
Thu 10/908:40
USM
-
LGW
3 stops28h 25m
Multiple Airlines
Deal found 8/5£769
Mon 11/509:30
LHR
-
USM
2 stops26h 30m
Etihad Airways
Mon 18/519:00
USM
-
LHR
2 stops26h 05m
Etihad Airways
Deal found 10/5£769
Sat 21/1110:00
LGW
-
USM
2 stops28h 05m
Air France
Thu 3/1211:40
USM
-
LGW
2 stops35h 05m
Air France
Deal found 11/5£770
Sat 13/609:15
LGW
-
USM
2 stops29h 10m
Qatar Airways
Wed 24/617:55
USM
-
LGW
2 stops18h 45m
Qatar Airways
Deal found 8/5£771

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 13 May 2026.

Return from

£759

One-way from

£334

Popular in

December

Cheapest in

November

Average price

£817
6/6-17/6
  • 6/6-17/6
  • 4 total stops
  • 42h 10m total
  • London to Ko Samui
Search Deals
16/9
  • 16/9
  • 2 total stops
  • 28h 45m total
  • London to Ko Samui
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (£85 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 May 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 13 May 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

LGW - USM

LGWUSM

London Gatwick

Wed 3/6

10:40-15:25

2 stops22h 45m

Ko Samui

Tue 9/6

15:50-06:55

2 stops21h 05m

£777

LondonKo Samui

LGW - USM

LGWUSM

London Gatwick

Wed 10/6

12:00-17:45

3 stops23h 45m

Ko Samui

Wed 17/6

18:15-08:25

2 stops20h 10m

£788

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Wed 3/6

15:05-20:25

2 stops23h 20m

Ko Samui

Tue 9/6

15:25-08:00

2 stops22h 35m

£788

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Sun 7/6

09:30-20:25

2 stops28h 55m

Ko Samui

Thu 11/6

15:25-08:00

2 stops22h 35m

£801

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Tue 2/6

22:05-15:10

2 stops35h 05m

Ko Samui

Tue 9/6

15:50-06:55

2 stops21h 05m

£805

LondonKo Samui

LCY - USM

LCYUSM

London City

Tue 15/9

13:10-12:45

2 stops17h 35m

Ko Samui

Wed 30/9

09:15-08:40

2 stops29h 25m

£810

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Thu 11/6

20:45-21:35

2 stops18h 50m

Ko Samui

Mon 15/6

12:10-07:00

2 stops24h 50m

£811

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Thu 6/8

20:50-10:45

2 stops31h 55m

Ko Samui

Sun 6/9

17:55-19:10

2 stops31h 15m

£813

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Mon 1/6

08:25-11:05

2 stops20h 40m

Ko Samui

Sat 13/6

15:25-06:30

2 stops21h 05m

£813

LondonKo Samui

LHR - USM

LHRUSM

London Heathrow

Thu 4/6

14:45-16:55

2 stops20h 10m

Ko Samui

Sun 14/6

21:00-12:45

2 stops21h 45m

£824

Flights are sorted by cheapest return flights first.

Deals found on 8/5

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

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 89 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.

How long is the flight to Ko Samui?

On average, a flight from London to Ko Samui takes 19 hours 43 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 £761
EVA Air
EVA Air
From £704
Singapore Airlines
Singapore Airlines
From £737
Qatar Airways
Qatar Airways
From £746

What are the cheapest airlines that fly to Ko Samui?

The cheapest airlines flying from London to Ko Samui are Bangkok Airways, Air India 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).

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 13 May 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
1,445 reviews
Check prices

Crew

8.6

Food

8.1

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?
EVA Air
8.5
Very Good
1,445 reviews
EVA Air
8.5
Very Good
1,445 reviews
Check prices

Crew

8.6

Food

8.1

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?
Singapore Airlines
8.2
Very Good
1,510 reviews
EVA Air
8.5
Very Good
1,445 reviews
Check prices

Crew

8.6

Food

8.1

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?
Thai Airways
7.9
Good
401 reviews
EVA Air
8.5
Very Good
1,445 reviews
Check prices

Crew

8.6

Food

8.1

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?
Qatar Airways
7.4
Good
3,728 reviews
EVA Air
8.5
Very Good
1,445 reviews
Check prices

Crew

8.6

Food

8.1

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?
British Airways
6.7
Okay
7,977 reviews
EVA Air
8.5
Very Good
1,445 reviews
Check prices

Crew

8.6

Food

8.1

Comfort

8.3

Entertainment

8.0

Boarding

8.4

Overall

8.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Mar 2026

TPE - SFO

Why when we’re about to board they suddenly announced the letters ABC to board first .. so what is the use us waiting at the door (with wheelchairs) ended up almost at the end to board and I can see people walking boarding first? Is this something new? You go by letters now?

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 £60, while return flights cost around £94.

  • How much is a return flight to Ko Samui?

    A return flight to Ko Samui will typically cost around £153, however they can be found for as little as £94.

  • 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 (17 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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