How long is the flight from Ko Samui to London?

Lufthansa, Emirates, and Cathay Pacific can get you from Ko Samui to London in just under 24h 15m. Your travel time can differ by up to 12h 25m. Ko Samui and London are separated by a distance of 6138 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from Ko Samui to London?

When deciding which route to take from Ko Samui to London consider Ko Samui - London City, Ko Samui - London Heathrow or Ko Samui - London Gatwick as they are the most popular.

What airport do you fly from for flights from Ko Samui to London?

If you book a flight to London from Ko Samui, you will be flying from Ko Samui, which is the city’s only airport. Ko Samui (USM) is located 2.1 mi from the center of Ko Samui. There are 0 flights from Ko Samui to London per day from 0 different airlines.

Can I find deals for flights from Ko Samui to London that include hotel bookings?

Yes. In addition to deals on Ko Samui to London flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Ko Samui to London?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ko Samui to London.

Can I find deals for business class flights from Ko Samui to London?

Yes. Cheapflights offers flight deals from Ko Samui to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£238+ Cheap Flights from Ko Samui to London

Cheap flight deals from Ko Samui to London

Round-trip from	£731
One-way from	£238
Popular in	January
Cheapest in	June
Average price	£1,103

Lufthansa
17/11-24/11
4 total stops
41h 40m total
Ko Samui to London

Search Deals

27/11
3 total stops
46h 40m total
Ko Samui to London

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£107 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease (£48 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2025

Search Deals

Find flight deals from Ko Samui to London

Enter your travel dates to find the best prices.

Cheapest flights from Ko Samui to London
Explore the most affordable flight options available from Ko Samui to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 October 2025.

Tue 4/1121:10USM - LGW

1 stop28h 20mMultiple Airlines

Thu 13/1109:15LGW - USM

2 stops25h 50mMultiple Airlines

Deal found 27/10£690

Tue 4/1121:10USM - LGW

1 stop28h 20mMultiple Airlines

Wed 19/1110:30LGW - USM

2 stops22h 05mMultiple Airlines

Deal found 27/10£712

Mon 17/1109:35USM - LHR

2 stops19h 05mMultiple Airlines

Mon 24/1115:30LHR - USM

2 stops22h 35mMultiple Airlines

Deal found 27/10£731

Tue 4/1121:10USM - LGW

1 stop28h 20mMultiple Airlines

Sat 15/1115:40LGW - USM

2 stops18h 20mMultiple Airlines

Deal found 27/10£736

Wed 5/1108:30USM - LGW

1 stop17h 00mMultiple Airlines

Thu 13/1109:15LGW - USM

2 stops25h 50mMultiple Airlines

Deal found 27/10£748

Wed 5/1108:30USM - LGW

1 stop17h 00mMultiple Airlines

Wed 19/1110:30LGW - USM

2 stops23h 30mMultiple Airlines

Deal found 27/10£758

Mon 17/1113:25USM - LCY

2 stops35h 15mLufthansa

Mon 24/1109:50LCY - USM

2 stops28h 15mLufthansa

Deal found 27/10£767

Wed 5/1108:30USM - LGW

1 stop17h 00mMultiple Airlines

Tue 18/1116:00LGW - USM

1 stop15h 55mMultiple Airlines

Deal found 27/10£775

Wed 5/1107:55USM - LGW

1 stop17h 35mMultiple Airlines

Sat 15/1115:40LGW - USM

2 stops18h 20mMultiple Airlines

Deal found 27/10£776

Wed 5/1119:00USM - LHR

2 stops24h 05mEtihad Airways

Mon 17/1120:55LHR - USM

2 stops38h 20mEtihad Airways

Deal found 27/10£783

Wed 5/1119:00USM - LHR

2 stops24h 05mEtihad Airways

Sun 16/1108:50LHR - USM

2 stops26h 25mEtihad Airways

Deal found 27/10£794

Mon 3/1108:15USM - LHR

2 stops20h 25mSWISS

Mon 17/1118:40LHR - USM

2 stops19h 25mSWISS

Deal found 27/10£818

Best flights from Ko Samui to London
Discover carefully curated flight deals from Ko Samui to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 28 October 2025.

Mon 17/1109:35USM - LHR

2 stops19h 05mMultiple Airlines

Mon 24/1115:30LHR - USM

2 stops22h 35mMultiple Airlines

Deal found 27/10£731

Mon 17/1113:25USM - LCY

2 stops35h 15mLufthansa

Mon 24/1109:50LCY - USM

2 stops28h 15mLufthansa

Deal found 27/10£767

Mon 17/1113:25USM - LGW

2 stops24h 15mEmirates

Mon 24/1113:35LGW - USM

2 stops21h 40mEmirates

Deal found 27/10£821

Mon 17/1111:40USM - LHR

1 stop36h 40mCathay Pacific

Mon 24/1117:50LHR - USM

1 stop18h 45mCathay Pacific

Deal found 27/10£858

Mon 17/1119:45USM - LGW

1 stop17h 40mSingapore Airlines

Mon 24/1109:25LGW - USM

1 stop18h 35mSingapore Airlines

Deal found 27/10£868

Thu 25/1217:25USM - LGW

2 stops19h 30mQatar Airways

Mon 29/1209:00LGW - USM

2 stops16h 25mQatar Airways

Deal found 26/10£1,104

Wed 10/1221:10USM - LHR

2 stops21h 55mEtihad Airways

Wed 17/1220:55LHR - USM

2 stops27h 15mEtihad Airways

Deal found 26/10£1,137

Wed 10/1207:15USM - LHR

1 stop19h 20mThai Airways

Wed 17/1211:50LHR - USM

1 stop25h 35mThai Airways

Deal found 26/10£1,208

Thu 25/1210:00USM - LCY

2 stops30h 10mSWISS

Mon 29/1219:10LCY - USM

2 stops18h 55mSWISS

Deal found 26/10£1,322

Thu 25/1207:55USM - LHR

2 stops29h 45mMultiple Airlines

Mon 29/1221:50LHR - USM

2 stops34h 50mMultiple Airlines

Deal found 26/10£901

Wed 10/1207:15USM - LGW

2 stops30h 15mMultiple Airlines

Wed 17/1210:30LGW - USM

2 stops23h 30mMultiple Airlines

Deal found 26/10£933

Thu 25/1208:30USM - LGW

1 stop16h 50mMultiple Airlines

Mon 29/1211:25LGW - USM

1 stop37h 10mMultiple Airlines

Deal found 26/10£959

Wed 10/1220:30USM - LHR

2 stops18h 15mMultiple Airlines

Wed 17/1211:50LHR - USM

1 stop25h 35mMultiple Airlines

Deal found 26/10£1,218

Fri 12/1212:25USM - LHR

2 stops25h 15mEtihad Airways

Wed 14/120:55LHR - USM

2 stops16h 55mEtihad Airways

Deal found 26/10£2,294

Wed 10/1216:25USM - LCY

2 stops23h 15mMultiple Airlines

Wed 17/1213:30LCY - USM

2 stops17h 20mMultiple Airlines

Deal found 26/10£1,580

Fri 12/1210:00USM - LHR

1 stop16h 35mThai Airways

Wed 14/121:35LHR - USM

1 stop14h 05mThai Airways

Deal found 26/10£3,478

Fri 12/1216:25USM - LCY

2 stops22h 35mSWISS

Wed 14/113:30LCY - USM

2 stops20h 10mSWISS

Deal found 26/10£4,506

Fri 12/1207:15USM - LHR

1 stop18h 50mMultiple Airlines

Wed 14/120:30LHR - USM

2 stops40h 15mMultiple Airlines

Deal found 26/10£3,077

Fri 12/1219:45USM - LGW

1 stop17h 40mSingapore Airlines

Wed 14/109:20LGW - USM

1 stop18h 40mSingapore Airlines

Deal found 26/10£5,924

Last-minute flights from Ko Samui to London
Discover last-minute flight deals from Ko Samui to London. Data last updated 28 October 2025 and is based on user searches.

Sun 2/1118:35USM - LGW

1 stop30h 55mMultiple Airlines

Sun 16/1116:10LGW - USM

1 stop18h 55mMultiple Airlines

Deal found 27/10£815

Mon 3/1108:15USM - LHR

2 stops20h 25mSWISS

Mon 17/1118:40LHR - USM

2 stops19h 25mSWISS

Deal found 27/10£814

Tue 4/1121:10USM - LGW

1 stop28h 20mMultiple Airlines

Thu 13/1109:15LGW - USM

2 stops25h 50mMultiple Airlines

Deal found 27/10£706

Tue 4/1121:10USM - LGW

1 stop28h 20mMultiple Airlines

Wed 19/1110:30LGW - USM

2 stops23h 30mMultiple Airlines

Deal found 27/10£715

Tue 4/1121:10USM - LGW

1 stop28h 20mMultiple Airlines

Sat 15/1115:40LGW - USM

2 stops17h 45mMultiple Airlines

Deal found 27/10£734

Wed 5/1108:30USM - LGW

1 stop17h 00mMultiple Airlines

Thu 13/1109:15LGW - USM

2 stops25h 50mMultiple Airlines

Deal found 27/10£748

Wed 5/1108:30USM - LGW

1 stop17h 00mMultiple Airlines

Wed 19/1110:30LGW - USM

2 stops23h 30mMultiple Airlines

Deal found 27/10£758

Wed 5/1108:30USM - LGW

1 stop17h 00mMultiple Airlines

Tue 18/1116:00LGW - USM

1 stop15h 55mMultiple Airlines

Deal found 27/10£775

Wed 5/1107:55USM - LGW

1 stop17h 35mMultiple Airlines

Sat 15/1115:40LGW - USM

2 stops18h 20mMultiple Airlines

Deal found 27/10£776

Wed 5/1116:45USM - LHR

2 stops26h 20mEtihad Airways

Mon 17/1120:55LHR - USM

2 stops38h 20mEtihad Airways

Deal found 27/10£781

Wed 5/1121:10USM - LHR

2 stops28h 00mEtihad Airways

Sun 16/1108:50LHR - USM

2 stops26h 25mEtihad Airways

Deal found 27/10£792

Wed 5/1108:30USM - LGW

1 stop17h 00mMultiple Airlines

Sun 16/1116:10LGW - USM

1 stop13h 55mMultiple Airlines

Deal found 27/10£823

One-way flights from Ko Samui to London
Search for one-way flight options from Ko Samui to London. Find affordable one-way fares based on user searches. Data last updated 28 October 2025.

Thu 27/1108:15USM - LGW

3 stops46h 40mMultiple Airlines

Deal found 26/10£238

Wed 10/1219:00USM - LGW

3 stops35h 55mMultiple Airlines

Deal found 26/10£247

Thu 27/1108:15USM - LHR

3 stops45h 10mMultiple Airlines

Deal found 26/10£293

Wed 10/1219:00USM - LHR

3 stops28h 10mMultiple Airlines

Deal found 26/10£306

Tue 31/307:00USM - LGW

3 stops35h 35mMultiple Airlines

Deal found 26/10£320

Tue 31/319:25USM - LHR

2 stops51h 10mMultiple Airlines

Deal found 26/10£324

Sat 24/108:15USM - LHR

2 stops29h 25mEtihad Airways

Deal found 27/10£330

Mon 20/412:05USM - LGW

3 stops40h 45mMultiple Airlines

Deal found 27/10£332

Sun 5/412:05USM - LHR

2 stops34h 30mMultiple Airlines

Deal found 26/10£342

Mon 20/415:50USM - LHR

2 stops28h 55mMultiple Airlines

Deal found 27/10£358

Sun 5/412:05USM - LGW

3 stops48h 30mMultiple Airlines

Deal found 26/10£363

Sat 24/112:25USM - LHR

3 stops36h 45mMultiple Airlines

Deal found 27/10£370

Fly from

Fly to

Route

Depart

Return

Price

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 17/11

09:35-21:40

2 stops19h 05m

London Heathrow

Mon 24/11

15:30-21:05

2 stops22h 35m

£731

Ko SamuiLondon

USM - LCY

USMLCY

Ko Samui

Mon 17/11

13:25-17:40

2 stops35h 15m

London City

Mon 24/11

09:50-21:05

2 stops28h 15m

£767

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Mon 17/11

13:25-06:40

2 stops24h 15m

London Gatwick

Mon 24/11

13:35-18:15

2 stops21h 40m

£821

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 17/11

11:40-17:20

1 stop36h 40m

London Heathrow

Mon 24/11

17:50-19:35

1 stop18h 45m

£858

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Mon 17/11

19:45-06:25

1 stop17h 40m

London Gatwick

Mon 24/11

09:25-11:00

1 stop18h 35m

£868

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Thu 25/12

07:55-06:40

2 stops29h 45m

London Heathrow

Mon 29/12

21:50-15:40

2 stops34h 50m

£901

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Wed 10/12

07:15-06:30

2 stops30h 15m

London Gatwick

Wed 17/12

10:30-17:00

2 stops23h 30m

£933

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Thu 25/12

08:30-18:20

1 stop16h 50m

London Gatwick

Mon 29/12

11:25-07:35

1 stop37h 10m

£959

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Thu 25/12

17:25-05:55

2 stops19h 30m

London Gatwick

Mon 29/12

09:00-08:25

2 stops16h 25m

£1,104

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 10/12

21:10-12:05

2 stops21h 55m

London Heathrow

Wed 17/12

20:55-07:10

2 stops27h 15m

£1,137

Flights are sorted by cheapest return flights first.

Deals found on 26/10

Showing 1-10 of 41 results

...

Best time to book a flight from Ko Samui to London

Have a flexible travel schedule? Discover the best time to fly to London from 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 from Ko Samui to London

What is the cheapest time of day to fly from USM to LON?

When flying from Ko Samui to London, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 47% versus a flight at midday.

What’s the top stopover airport for flights from Ko Samui to London?

Bangkok (BKK) – chosen by Cheapflights users on 80% of one-stop itineraries from Ko Samui to London on Cheapflights.

What’s the cheapest stopover airport for flights from Ko Samui to London?

Singapore (SIN) is the most affordable one-stop option, with an average return flight price of £840.

What’s the fastest stopover option from Ko Samui to London?

Flights via Bangkok (BKK) have the shortest average one-way travel time for one-stop routes: 16h 05m.

Which airport typically offers the quickest stopover for flights from Ko Samui to London?

Flights via Bangkok (BKK) offer the fastest connection on this route, with an average stopover time of 2h 43m.

Reviews of airlines servicing London

See what other customers who have flown with Austrian Airlines and Qatar Airways from Ko Samui to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Austrian Airlines

7.6

Good

861 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Andrew,Sept 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.

Austrian Airlines

7.6

Good

861 reviews

Austrian Airlines

7.6

Good

861 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Andrew,Sept 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.

Qatar Airways

7.4

Good

3,658 reviews

Austrian Airlines

7.6

Good

861 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Andrew,Sept 2025

FLR - VIE

Staff was really nice, they provided water as a beverage. Otherwise you had to purchase beverages or food. A complementary chocolate was provided at the end of the flight.

Related info for your journey

What airport do you fly from for flights from Ko Samui to London?
If you book a flight to London from Ko Samui, you will be flying from Ko Samui, which is the city’s only airport. Ko Samui (USM) is located 2.1 mi from the center of Ko Samui. There are 0 flights from Ko Samui to London per day from 0 different airlines.
How long is the flight from Ko Samui to London?
Lufthansa, Emirates, and Cathay Pacific can get you from Ko Samui to London in just under 24h 15m. Your travel time can differ by up to 12h 25m. Ko Samui and London are separated by a distance of 6138 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the most popular routes from Ko Samui to London?
When deciding which route to take from Ko Samui to London consider Ko Samui - London City, Ko Samui - London Heathrow or Ko Samui - London Gatwick as they are the most popular.
Can I find deals for flights from Ko Samui to London that include hotel bookings?
Yes. In addition to deals on Ko Samui to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Ko Samui to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ko Samui to London.
Can I find deals for business class flights from Ko Samui to London?
Yes. Cheapflights offers flight deals from Ko Samui to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Ipswich

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How does Cheapflights help users find flights from Ko Samui to London?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Ko Samui to London. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights helps you find that perfect flight to London from Ko Samui by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Ko Samui to London with no change fees?

Yes! Cheapflights helps users easily find flights from Ko Samui to London with no change fees.

Can Cheapflights notify me if prices for flights from Ko Samui to London become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Ko Samui today and book when prices fit your budget.

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Cheap flights from Ko Samui to London from £238

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 27/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ko Samui to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ko Samui to London

Cheapest flights from Ko Samui to LondonExplore the most affordable flight options available from Ko Samui to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 October 2025.

Explore the most affordable flight options available from Ko Samui to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 October 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ko Samui to London that are best for you.

Best time to book a flight from Ko Samui to London

Have a flexible travel schedule? Discover the best time to fly to London from Ko Samui with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ko Samui to London

What is the cheapest time of day to fly from USM to LON?

Find hourly flight availability from Ko Samui to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 October 2025.

What’s the top stopover airport for flights from Ko Samui to London?

Share of one-stop return flights from Ko Samui to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

What’s the cheapest stopover airport for flights from Ko Samui to London?

Average return fare for one-stop flights from Ko Samui to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

What’s the fastest stopover option from Ko Samui to London?

Shortest average travel time for one-stop one-way flights from Ko Samui to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Which airport typically offers the quickest stopover for flights from Ko Samui to London?

Average stopover duration for one-stop one-way flights from Ko Samui to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing London

See what other customers who have flown with Austrian Airlines and Qatar Airways from Ko Samui to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ko Samui to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Ko Samui to London?

How long is the flight from Ko Samui to London?

What are the most popular routes from Ko Samui to London?

Can I find deals for flights from Ko Samui to London that include hotel bookings?

How can I find direct flights from Ko Samui to London?

Can I find deals for business class flights from Ko Samui to London?

Travelling to a place near London?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ko Samui to London

See prices for flight routes from nearby airports that may be better suited for you.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ko Samui to London?

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

Can Cheapflights find flights from Ko Samui to London with no change fees?

Can Cheapflights notify me if prices for flights from Ko Samui to London become cheaper?

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Cheapest flights from Ko Samui to London
Explore the most affordable flight options available from Ko Samui to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 October 2025.