£275+ 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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
Flights to Ko Samui in 2025
Find the latest flights to Ko Samui in 2025, 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 30 April 2025.
Find flight deals to Ko Samui
Cheapest flights to Ko SamuiExplore the most affordable flight options available to Ko Samui. Find the lowest fares based on data from user searches, with prices last updated on 30 April 2025.
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 30 April 2025.
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 30 April 2025.
Use the filters below to find and compare flights to Ko Samui that are best for you.
Fly from
Route
Depart
Return
Price
LondonKo Samui
LTN - USM
LTNUSM
London Luton
Wed 18/6
17:35-21:35
3 stops22h 00m
Ko Samui
Wed 9/7
08:00-22:45
3 stops44h 45m
LondonKo Samui
LCY - USM
LCYUSM
London City
Tue 3/6
17:50-18:15
2 stops18h 25m
Ko Samui
Wed 11/6
10:55-08:10
2 stops27h 15m
LondonKo Samui
LHR - USM
LHRUSM
London Heathrow
Sat 17/5
19:55-07:50
3 stops29h 55m
Ko Samui
Tue 3/6
19:25-20:00
2 stops30h 35m
LondonKo Samui
LGW - USM
LGWUSM
London Gatwick
Fri 16/5
06:50-21:35
3 stops32h 45m
Ko Samui
Wed 4/6
12:05-15:00
3 stops32h 55m
LondonKo Samui
LGW - USM
LGWUSM
London Gatwick
Fri 13/6
11:25-16:35
2 stops23h 10m
Ko Samui
Thu 19/6
15:30-06:55
2 stops21h 25m
LondonKo Samui
LGW - USM
LGWUSM
London Gatwick
Tue 3/6
18:35-12:45
2 stops36h 10m
Ko Samui
Tue 17/6
10:05-17:50
2 stops37h 45m
LondonKo Samui
LHR - USM
LHRUSM
London Heathrow
Mon 2/6
06:00-13:45
2 stops25h 45m
Ko Samui
Wed 25/6
10:05-07:55
2 stops27h 50m
LondonKo Samui
LHR - USM
LHRUSM
London Heathrow
Fri 16/5
21:35-20:30
1 stop16h 55m
Ko Samui
Wed 4/6
08:45-19:20
1 stop16h 35m
LondonKo Samui
LHR - USM
LHRUSM
London Heathrow
Thu 15/5
14:45-18:15
2 stops21h 30m
Ko Samui
Thu 5/6
08:45-20:55
2 stops18h 10m
LondonKo Samui
LHR - USM
LHRUSM
London Heathrow
Mon 2/6
06:00-18:30
2 stops30h 30m
Ko Samui
Thu 26/6
19:15-08:45
2 stops19h 30m
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.
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?
Use this chart to determine the optimal time to book a return flight from London to Ko Samui. Price data was last updated on 25 April 2025.
To ensure you get the cheapest price possible for a flight to Ko Samui, you should look to book at least 13 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 17 hours 56 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.
When is the cheapest time to fly to Ko Samui?
Use this chart to determine the cheapest time to fly return from London to Ko Samui. Price data was last updated on 12 May 2024.
Users looking for the lowest fares to Ko Samui should consider flying on Wednesday at midday, when prices are typically cheapest. Budget-minded travellers will want to avoid Sunday evenings, when prices are usually at their highest.
What are the most popular airlines that fly to Ko Samui?
The most popular airlines flying from London to Ko Samui are EVA Air, Thai Airways and British Airways.
What are the cheapest airlines that fly to Ko Samui?
The cheapest airlines flying from London to Ko Samui are Air France, KLM and Etihad Airways.
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 30 April 2025.
To help decide which airline to fly to Ko Samui, see what other customers have to say about EVA Air, Singapore Airlines and Emirates. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
Entertainment
Overall
Comfort
Food
Crew
Reviews
Dale,Apr 2025
SFO - TPE
Boarding
Entertainment
Overall
Comfort
Food
Crew
Reviews
Dale,Apr 2025
SFO - TPE
Boarding
Entertainment
Overall
Comfort
Food
Crew
Reviews
Dale,Apr 2025
SFO - TPE
Boarding
Entertainment
Overall
Comfort
Food
Crew
Reviews
Dale,Apr 2025
SFO - TPE
Boarding
Entertainment
Overall
Comfort
Food
Crew
Reviews
Dale,Apr 2025
SFO - TPE
Boarding
Entertainment
Overall
Comfort
Food
Crew
Reviews
Dale,Apr 2025
SFO - TPE
FAQs about flying to Ko Samui
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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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