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 80 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.

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.

What is the cheapest month to fly to Ko Samui?

Currently, the cheapest month for flights to Ko Samui is August . The most expensive month for flights is December . The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.

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 £53, while return flights cost around £88.

How much is a return flight to Ko Samui?

A return flight to Ko Samui will typically cost around £165, however they can be found for as little as £88.

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 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).

When is the cheapest time to fly to Ko Samui?

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 Singapore Airlines.

How long is the flight to Ko Samui?

On average, a flight from London to Ko Samui takes 19 hours 33 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 cheapest airlines that fly to Ko Samui?

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

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.

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).

Cheap Flights to Ko Samui from £284

Flights to Ko Samui in 2025

Return from	£673
One-way from	£284
Popular in	December
Cheapest in	May
Average price	£818

Etihad Airways
23/2-12/3
4 total stops
44h 45m total
London to Ko Samui

Search Deals

7/4
2 total stops
42h 15m total
London to Ko Samui

Search Deals

Highest demand for flights based on searches. 4% potential increase in price (£46 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£26 potential savings vs. average return price).

Search Deals

Average for return flights in October 2025

Search Deals

Find flight deals to Ko Samui

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 24 October 2025.

Sat 22/1113:55LGW - USM

3 stops35h 15mMultiple Airlines

Fri 5/1219:00USM - LGW

3 stops35h 55mMultiple Airlines

Deal found 23/10£675

Mon 3/1120:55LHR - USM

2 stops27h 20mEtihad Airways

Mon 1/1218:15USM - LHR

2 stops19h 25mEtihad Airways

Deal found 23/10£675

Tue 28/1020:55LHR - USM

2 stops27h 50mEtihad Airways

Wed 26/1116:30USM - LHR

2 stops21h 10mEtihad Airways

Deal found 22/10£676

Wed 26/1120:55LHR - USM

2 stops27h 15mEtihad Airways

Sun 30/1118:15USM - LHR

2 stops24h 50mEtihad Airways

Deal found 23/10£679

Tue 25/1113:05LGW - USM

3 stops35h 40mMultiple Airlines

Sun 30/1106:45USM - LGW

3 stops30h 45mMultiple Airlines

Deal found 22/10£680

Sat 22/1114:00LTN - USM

3 stops35h 40mMultiple Airlines

Fri 5/1219:00USM - LTN

3 stops35h 10mMultiple Airlines

Deal found 23/10£685

Wed 26/1119:30LTN - USM

2 stops29h 30mMultiple Airlines

Sun 30/1118:15USM - LTN

3 stops26h 05mMultiple Airlines

Deal found 23/10£691

Mon 10/1120:25LHR - USM

2 stops32h 55mMultiple Airlines

Mon 24/1111:10USM - LHR

2 stops37h 40mMultiple Airlines

Deal found 24/10£692

Sun 7/1220:25LHR - USM

2 stops29h 00mMultiple Airlines

Sun 14/1219:00USM - LHR

2 stops29h 50mMultiple Airlines

Deal found 23/10£694

Tue 25/1108:50LHR - USM

2 stops18h 45mEtihad Airways

Sun 30/1118:15USM - LHR

2 stops24h 50mEtihad Airways

Deal found 22/10£694

Sun 7/1207:30LGW - USM

3 stops41h 30mMultiple Airlines

Sun 14/1207:55USM - LGW

3 stops29h 35mMultiple Airlines

Deal found 24/10£700

Wed 26/1106:00STN - USM

3 stops28h 30mMultiple Airlines

Sun 30/1119:45USM - STN

2 stops28h 05mMultiple Airlines

Deal found 22/10£700

Best flights to Ko Samui
Discover carefully curated flight deals to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 24 October 2025.

Thu 15/110:30LGW - USM

2 stops26h 15mMultiple Airlines

Thu 29/118:40USM - LGW

2 stops26h 20mMultiple Airlines

Deal found 23/10£674

Tue 28/1020:55LHR - USM

2 stops27h 50mEtihad Airways

Wed 26/1116:30USM - LHR

2 stops21h 10mEtihad Airways

Deal found 22/10£676

Sun 15/319:20LCY - USM

2 stops18h 45mSWISS

Thu 26/316:25USM - LCY

2 stops23h 20mSWISS

Deal found 22/10£791

Tue 18/1110:40LHR - USM

1 stop17h 20mSingapore Airlines

Tue 25/1118:05USM - LHR

1 stop18h 50mSingapore Airlines

Deal found 22/10£826

Thu 15/117:50LHR - USM

1 stop18h 45mCathay Pacific

Thu 29/111:40USM - LHR

1 stop34h 20mCathay Pacific

Deal found 23/10£857

Sun 7/1221:35LHR - USM

1 stop27h 10mThai Airways

Sun 14/1207:15USM - LHR

1 stop19h 20mThai Airways

Deal found 24/10£878

Mon 17/1114:05STN - USM

2 stops19h 55mEmirates

Mon 24/1114:05USM - STN

2 stops29h 00mEmirates

Deal found 23/10£902

Mon 26/121:15LGW - USM

1 stop15h 35mBritish Airways

Tue 3/219:10USM - LGW

1 stop17h 20mBritish Airways

Deal found 22/10£983

Thu 15/106:00LGW - USM

3 stops30h 45mMultiple Airlines

Thu 29/119:00USM - LGW

3 stops35h 55mMultiple Airlines

Deal found 23/10£676

Sat 22/1114:00LTN - USM

3 stops35h 40mMultiple Airlines

Fri 5/1219:00USM - LTN

3 stops35h 10mMultiple Airlines

Deal found 23/10£685

Sat 15/1108:50LHR - USM

2 stops27h 05mEtihad Airways

Sun 30/1118:15USM - LHR

2 stops24h 50mEtihad Airways

Deal found 23/10£757

Wed 26/1119:30LTN - USM

2 stops29h 30mMultiple Airlines

Sun 30/1118:15USM - LTN

3 stops26h 05mMultiple Airlines

Deal found 23/10£691

Mon 3/1110:40LHR - USM

1 stop17h 20mSingapore Airlines

Tue 11/1118:05USM - LHR

1 stop18h 50mSingapore Airlines

Deal found 22/10£858

Tue 13/117:50LHR - USM

1 stop18h 45mCathay Pacific

Thu 22/111:40USM - LHR

1 stop39h 30mCathay Pacific

Deal found 22/10£901

Sun 15/314:05STN - USM

2 stops18h 30mEmirates

Thu 26/313:45USM - STN

2 stops29h 20mEmirates

Deal found 22/10£904

Sat 10/120:55LHR - USM

2 stops27h 15mEtihad Airways

Sun 8/213:25USM - LHR

2 stops24h 15mEtihad Airways

Deal found 24/10£826

Thu 15/117:20STN - USM

3 stops31h 40mMultiple Airlines

Thu 29/119:45USM - STN

2 stops27h 15mMultiple Airlines

Deal found 23/10£703

Thu 15/109:20LGW - USM

1 stop26h 30mSingapore Airlines

Thu 29/108:55USM - LGW

1 stop28h 30mSingapore Airlines

Deal found 23/10£890

Sat 22/1114:00LTN - USM

3 stops35h 10mMultiple Airlines

Fri 5/1219:45USM - LTN

2 stops27h 35mMultiple Airlines

Deal found 23/10£706

Thu 19/320:15STN - USM

2 stops38h 15mEmirates

Sun 29/317:55USM - STN

2 stops25h 00mEmirates

Deal found 22/10£961

Fri 21/1109:20LCY - USM

2 stops26h 05mMultiple Airlines

Mon 1/1216:25USM - LCY

2 stops32h 15mMultiple Airlines

Deal found 23/10£708

Mon 17/1109:25LGW - USM

1 stop18h 35mSingapore Airlines

Mon 24/1119:45USM - LGW

1 stop17h 40mSingapore Airlines

Deal found 22/10£957

Wed 21/120:15STN - USM

2 stops28h 55mEmirates

Wed 11/217:25USM - STN

2 stops25h 40mEmirates

Deal found 23/10£970

Tue 18/1119:10LCY - USM

2 stops40h 15mMultiple Airlines

Wed 3/1216:25USM - LCY

2 stops31h 15mMultiple Airlines

Deal found 23/10£709

Tue 18/1109:20LGW - USM

1 stop18h 40mSingapore Airlines

Tue 25/1118:05USM - LGW

1 stop19h 20mSingapore Airlines

Deal found 22/10£960

Mon 17/1114:05STN - USM

2 stops18h 30mEmirates

Mon 24/1113:25USM - STN

2 stops29h 40mEmirates

Deal found 23/10£988

Thu 1/106:15LTN - USM

3 stops27h 45mMultiple Airlines

Thu 22/118:05USM - LTN

3 stops33h 05mMultiple Airlines

Deal found 23/10£709

Mon 3/1114:05STN - USM

2 stops21h 10mEmirates

Tue 11/1119:10USM - STN

2 stops23h 55mEmirates

Deal found 22/10£990

Fri 21/1109:20LCY - USM

2 stops18h 20mMultiple Airlines

Mon 1/1216:25USM - LCY

2 stops32h 15mMultiple Airlines

Deal found 22/10£712

Thu 12/314:05STN - USM

2 stops19h 55mEmirates

Sun 22/311:10USM - STN

2 stops31h 55mEmirates

Deal found 22/10£994

Last-minute flights to Ko Samui
Discover last-minute flight deals to Ko Samui. Data last updated 24 October 2025 and is based on user searches.

Tue 28/1020:55LHR - USM

2 stops27h 50mEtihad Airways

Wed 26/1116:30USM - LHR

2 stops21h 10mEtihad Airways

Deal found 22/10£676

Mon 3/1120:55LHR - USM

2 stops27h 20mEtihad Airways

Mon 1/1218:15USM - LHR

2 stops19h 25mEtihad Airways

Deal found 23/10£675

Fri 21/1109:20LCY - USM

2 stops26h 05mMultiple Airlines

Mon 1/1216:25USM - LCY

2 stops32h 15mMultiple Airlines

Deal found 23/10£708

Sat 22/1113:55LGW - USM

3 stops35h 15mMultiple Airlines

Fri 5/1219:00USM - LGW

3 stops35h 55mMultiple Airlines

Deal found 23/10£675

Sat 22/1114:00LTN - USM

3 stops35h 40mMultiple Airlines

Fri 5/1219:00USM - LTN

3 stops35h 10mMultiple Airlines

Deal found 23/10£685

Sat 22/1114:00LTN - USM

3 stops35h 10mMultiple Airlines

Fri 5/1219:45USM - LTN

2 stops27h 35mMultiple Airlines

Deal found 23/10£706

Tue 25/1113:05LGW - USM

3 stops35h 40mMultiple Airlines

Sun 30/1106:45USM - LGW

3 stops30h 45mMultiple Airlines

Deal found 22/10£680

Tue 25/1108:50LHR - USM

2 stops18h 45mEtihad Airways

Sun 30/1118:15USM - LHR

2 stops24h 50mEtihad Airways

Deal found 22/10£694

Wed 26/1120:55LHR - USM

2 stops27h 15mEtihad Airways

Sun 30/1118:15USM - LHR

2 stops24h 50mEtihad Airways

Deal found 23/10£679

Wed 26/1119:30LTN - USM

2 stops29h 30mMultiple Airlines

Sun 30/1118:15USM - LTN

3 stops26h 05mMultiple Airlines

Deal found 23/10£691

Wed 26/1106:00STN - USM

3 stops28h 30mMultiple Airlines

Sun 30/1119:45USM - STN

2 stops28h 05mMultiple Airlines

Deal found 22/10£700

Thu 27/1119:10LCY - USM

2 stops18h 55mMultiple Airlines

Sun 7/1208:55USM - LCY

2 stops30h 45mMultiple Airlines

Deal found 22/10£706

One-way flights to Ko Samui
Search for one-way flight options to Ko Samui. Find affordable one-way fares based on user searches. Data last updated 24 October 2025.

Tue 7/407:05STN - USM

2 stops42h 15mMultiple Airlines

Deal found 22/10£284

Thu 27/1122:15LHR - USM

2 stops26h 45mMultiple Airlines

Deal found 22/10£293

Wed 26/1120:50LTN - USM

3 stops52h 10mMultiple Airlines

Deal found 22/10£296

Sat 6/1219:45LTN - USM

3 stops53h 15mMultiple Airlines

Deal found 22/10£308

Thu 27/1122:15LHR - USM

3 stops37h 10mMultiple Airlines

Deal found 22/10£335

Wed 26/1112:45STN - USM

3 stops35h 25mMultiple Airlines

Deal found 22/10£337

Mon 29/1216:05LTN - USM

3 stops57h 20mMultiple Airlines

Deal found 23/10£348

Wed 31/1214:00LTN - USM

3 stops59h 25mMultiple Airlines

Deal found 23/10£349

Wed 4/323:20STN - USM

3 stops48h 50mMultiple Airlines

Deal found 22/10£352

Wed 26/1119:30LTN - USM

2 stops29h 30mMultiple Airlines

Deal found 22/10£352

Mon 29/1216:05LTN - USM

3 stops57h 20mMultiple Airlines

Deal found 22/10£357

Mon 29/1216:05LTN - USM

3 stops57h 20mMultiple Airlines

Deal found 23/10£358

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Cheap flights to Ko Samui – Compare and Save

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 24 October 2025.

Return from

One-way from

Popular in

Cheapest in

Average price

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 24 October 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 24 October 2025.

100% Free

Book with Flexibility

Travel Smart

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 24 October 2025.