What are the cheapest airlines flying from Ko Samui to London round-trip?

Flying on Qantas Airways is currently your cheapest option to London, with prices starting at £1,010. Additional return tickets that might be worth considering are offered by Qatar Airways and SWISS, with the lowest prices starting at £1,013 and £1,050, respectively.

What are the cheapest airlines to fly from Ko Samui to London one-way?

The cheapet airlines for a one-way flight from Ko Samui to London are Emirates (£425), Qatar Airways (£439), and EVA Air (£442).

What is the cheapest month to book a flight from Ko Samui to London?

Currently, January is the cheapest month in which you can book a flight from Ko Samui to London (average of £112). Flying from Ko Samui to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest day to fly from Ko Samui to London?

Travellers seeking maximum savings on their Ko Samui to London flight should consider departing on Monday mornings when fares are most often at their lowest. Thursday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 Heathrow, Ko Samui - London City or Ko Samui - London Gatwick as they are the most popular.

What is the cheapest day to fly round-trip from Ko Samui to London?

Travelers have found that booking a Thursday departure is the best way to save up to 22% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

What is the cheapest month to fly from Ko Samui to London?

The best pricing can be found in the month of October. Prices to London from Ko Samui average £927. You can even find prices in October for less than £927, as users have found deals to London from as low as £400. The month of January appears to be one of the more expensive times to travel to London from Ko Samui. Flying in the targeted month can save you up to 65%.

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.

£279+ Flights from Ko Samui to London

Cheap flight deals from Ko Samui to London

Round-trip from	£891
One-way from	£279
Popular in	January
Cheapest in	October
Average price	£754

18/7-21/7
4 total stops
49h 25m total
Ko Samui to London

Search Deals

30/11
2 total stops
25h 45m total
Ko Samui to London

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (£139 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 7% potential price decrease (£51 potential savings vs. average return price).

Search Deals

Average for round-trip flights in June 2025

Search Deals

Find flight deals from Ko Samui to London

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 13 June 2025.

Mon 28/721:00USM - LGW

2 stops24h 00mMultiple Airlines

Mon 4/818:05LGW - USM

2 stops21h 30mMultiple Airlines

Deal found 13/6£854

Sat 2/821:00USM - LHR

2 stops21h 25mMultiple Airlines

Sat 16/822:15LHR - USM

2 stops27h 20mMultiple Airlines

Deal found 11/6£893

Mon 28/715:30USM - LHR

2 stops20h 55mQatar Airways

Mon 4/810:50LHR - USM

2 stops20h 55mQatar Airways

Deal found 13/6£1,003

Tue 26/816:25USM - LHR

1 stop20h 10mQantas Airways

Wed 10/920:50LHR - USM

1 stop18h 20mQantas Airways

Deal found 11/6£1,010

Mon 25/812:10USM - LGW

2 stops24h 30mQatar Airways

Thu 11/909:00LGW - USM

2 stops19h 30mQatar Airways

Deal found 11/6£1,013

Mon 25/812:05USM - LCY

2 stops26h 45mMultiple Airlines

Tue 9/913:05LCY - USM

2 stops18h 40mMultiple Airlines

Deal found 11/6£1,035

Mon 25/809:15USM - LHR

2 stops28h 40mSWISS

Fri 12/908:40LHR - USM

2 stops23h 05mSWISS

Deal found 11/6£1,050

Mon 25/809:15USM - LCY

2 stops29h 35mSWISS

Wed 10/909:25LCY - USM

2 stops22h 20mSWISS

Deal found 11/6£1,069

Sat 2/808:45USM - LHR

1 stop16h 35mEVA Air

Sat 16/821:35LHR - USM

1 stop17h 15mEVA Air

Deal found 11/6£1,074

Fri 22/810:55USM - LHR

1 stop24h 45mCathay Pacific

Tue 9/918:20LHR - USM

1 stop18h 15mCathay Pacific

Deal found 11/6£1,120

Wed 27/817:50USM - LGW

2 stops24h 45mEmirates

Fri 12/914:30LGW - USM

2 stops20h 25mEmirates

Deal found 11/6£1,163

Tue 26/816:25USM - LHR

2 stops23h 30mLufthansa

Sat 6/917:30LHR - USM

2 stops21h 40mLufthansa

Deal found 11/6£1,204

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 13 June 2025.

Fri 18/717:05USM - LGW

2 stops27h 55mMultiple Airlines

Mon 21/718:05LGW - USM

2 stops21h 30mMultiple Airlines

Deal found 13/6£891

Tue 26/816:25USM - LHR

1 stop20h 10mQantas Airways

Wed 10/920:50LHR - USM

1 stop18h 20mQantas Airways

Deal found 11/6£1,010

Mon 25/812:10USM - LGW

2 stops24h 30mQatar Airways

Thu 11/909:00LGW - USM

2 stops19h 30mQatar Airways

Deal found 11/6£1,013

Mon 25/809:15USM - LHR

2 stops28h 40mSWISS

Fri 12/908:40LHR - USM

2 stops23h 05mSWISS

Deal found 11/6£1,050

Sat 2/808:45USM - LHR

1 stop16h 35mEVA Air

Sat 16/821:35LHR - USM

1 stop17h 15mEVA Air

Deal found 11/6£1,074

Fri 22/810:55USM - LHR

1 stop24h 45mCathay Pacific

Sun 7/918:20LHR - USM

1 stop18h 15mCathay Pacific

Deal found 11/6£1,120

Wed 27/817:50USM - LGW

2 stops24h 45mEmirates

Fri 12/914:30LGW - USM

2 stops20h 25mEmirates

Deal found 11/6£1,163

Tue 26/816:25USM - LHR

2 stops23h 30mLufthansa

Sat 6/917:30LHR - USM

2 stops21h 40mLufthansa

Deal found 11/6£1,204

Mon 25/812:05USM - LGW

1 stop24h 20mSingapore Airlines

Tue 9/910:15LGW - USM

1 stop26h 15mSingapore Airlines

Deal found 11/6£1,303

Fri 22/819:10USM - LGW

2 stops20h 45mTurkish Airlines

Mon 8/905:20LGW - USM

2 stops20h 55mTurkish Airlines

Deal found 11/6£1,590

Sat 2/821:00USM - LHR

2 stops21h 25mMultiple Airlines

Sat 16/822:15LHR - USM

2 stops27h 20mMultiple Airlines

Deal found 11/6£893

Mon 25/812:10USM - LHR

2 stops24h 15mQatar Airways

Thu 11/909:00LHR - USM

2 stops19h 30mQatar Airways

Deal found 11/6£1,045

Last-minute flights from Ko Samui to London
Discover last-minute flight deals from Ko Samui to London. Data last updated 13 June 2025 and is based on user searches.

Fri 18/709:15USM - LCY

2 stops32h 25mSWISS

Mon 21/718:05LCY - USM

2 stops21h 05mSWISS

Deal found 13/6£1,788

Sat 26/717:55USM - LGW

2 stops24h 40mEmirates

Sat 2/821:45LGW - USM

2 stops30h 25mEmirates

Deal found 11/6£1,593

Mon 28/721:00USM - LGW

2 stops24h 00mMultiple Airlines

Mon 4/818:05LGW - USM

2 stops21h 30mMultiple Airlines

Deal found 13/6£854

Mon 28/715:30USM - LHR

2 stops20h 55mQatar Airways

Mon 4/810:50LHR - USM

2 stops20h 55mQatar Airways

Deal found 13/6£1,003

Mon 28/717:50USM - LHR

2 stops22h 25mMultiple Airlines

Mon 4/816:35LHR - USM

3 stops21h 50mMultiple Airlines

Deal found 13/6£1,060

Mon 28/719:10USM - LHR

1 stop30h 10mEVA Air

Mon 4/821:35LHR - USM

1 stop17h 15mEVA Air

Deal found 13/6£1,111

Mon 28/716:25USM - LCY

2 stops22h 25mKLM

Mon 4/817:50LCY - USM

2 stops21h 20mKLM

Deal found 13/6£1,409

Mon 28/708:45USM - LGW

1 stop27h 40mSingapore Airlines

Mon 4/810:15LGW - USM

1 stop24h 30mSingapore Airlines

Deal found 13/6£1,814

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 13 June 2025.

Sun 30/1111:10USM - LHR

2 stops25h 45mMultiple Airlines

Deal found 11/6£279

Tue 25/1113:45USM - LGW

1 stop35h 45mMultiple Airlines

Deal found 11/6£302

Tue 25/1116:25USM - LGW

2 stops21h 15mEmirates

Deal found 11/6£425

Wed 26/1119:00USM - LHR

2 stops24h 10mQatar Airways

Deal found 11/6£439

Thu 27/1117:05USM - LGW

2 stops20h 00mQatar Airways

Deal found 11/6£441

Mon 1/1208:30USM - LHR

1 stop17h 50mEVA Air

Deal found 11/6£442

Sat 29/1116:25USM - LHR

2 stops28h 25mEmirates

Deal found 11/6£469

Sat 21/610:55USM - LHR

1 stop34h 20mCathay Pacific

Deal found 11/6£472

Tue 25/1116:25USM - LCY

2 stops27h 25mSWISS

Deal found 11/6£484

Thu 27/1110:00USM - LHR

1 stop16h 35mThai Airways

Deal found 11/6£495

Tue 1/716:25USM - LCY

2 stops21h 45mMultiple Airlines

Deal found 11/6£502

Thu 27/1116:25USM - LCY

2 stops32h 15mLufthansa

Deal found 11/6£504

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Fri 18/7

17:05-15:00

2 stops27h 55m

London Gatwick

Mon 21/7

18:05-21:35

2 stops21h 30m

£891

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sat 2/8

21:00-12:25

2 stops21h 25m

London Heathrow

Sat 16/8

22:15-07:35

2 stops27h 20m

£893

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Tue 26/8

16:25-06:35

1 stop20h 10m

London Heathrow

Wed 10/9

20:50-21:10

1 stop18h 20m

£1,010

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Mon 25/8

12:10-06:40

2 stops24h 30m

London Gatwick

Thu 11/9

09:00-10:30

2 stops19h 30m

£1,013

Ko SamuiLondon

USM - LCY

USMLCY

Ko Samui

Mon 25/8

12:05-08:50

2 stops26h 45m

London City

Tue 9/9

13:05-13:45

2 stops18h 40m

£1,035

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 25/8

12:10-06:25

2 stops24h 15m

London Heathrow

Thu 11/9

09:00-10:30

2 stops19h 30m

£1,045

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Mon 25/8

09:15-07:55

2 stops28h 40m

London Heathrow

Fri 12/9

08:40-13:45

2 stops23h 05m

£1,050

Ko SamuiLondon

USM - LCY

USMLCY

Ko Samui

Mon 25/8

09:15-08:50

2 stops29h 35m

London City

Wed 10/9

09:25-13:45

2 stops22h 20m

£1,069

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Sat 2/8

08:45-19:20

1 stop16h 35m

London Heathrow

Sat 16/8

21:35-20:50

1 stop17h 15m

£1,074

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 22/8

10:55-05:40

1 stop24h 45m

London Heathrow

Sun 7/9

18:20-18:35

1 stop18h 15m

£1,120

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 33 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 morning, which can drop the price by up to 11% versus a flight at midday.

Rainfall in London by month

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.

Temperature in London by month

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).

Reviews of airlines servicing London

Peruse reviews from past customers who have flown with EVA Air, Emirates and Singapore Airlines from Ko Samui to London to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

EVA Air

8.4

Very Good

1,204 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

EVA Air

8.4

Very Good

1,204 reviews

EVA Air

8.4

Very Good

1,204 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Emirates

8.1

Very Good

3,265 reviews

EVA Air

8.4

Very Good

1,204 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Singapore Airlines

8.1

Very Good

1,304 reviews

EVA Air

8.4

Very Good

1,204 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

KLM

7.8

Good

1,358 reviews

EVA Air

8.4

Very Good

1,204 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Thai Airways

7.7

Good

335 reviews

EVA Air

8.4

Very Good

1,204 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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.
What are the cheapest airlines flying from Ko Samui to London round-trip?
Flying on Qantas Airways is currently your cheapest option to London, with prices starting at £1,010. Additional return tickets that might be worth considering are offered by Qatar Airways and SWISS, with the lowest prices starting at £1,013 and £1,050, respectively.
What are the cheapest airlines to fly from Ko Samui to London one-way?
The cheapet airlines for a one-way flight from Ko Samui to London are Emirates (£425), Qatar Airways (£439), and EVA Air (£442).
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 Heathrow, Ko Samui - London City 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.
What is the cheapest month to book a flight from Ko Samui to London?
Currently, January is the cheapest month in which you can book a flight from Ko Samui to London (average of £112). Flying from Ko Samui to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Croydon

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Gatwick

Luton

Slough

Wembley

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Ilford

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Watford

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Winchester

Folkestone

Maidstone

Dartford

Guildford

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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 £279

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 30/11. 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 13 June 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 13 June 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 13 June 2025.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 13 June 2025.

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?

What are the cheapest airlines flying from Ko Samui to London round-trip?

What are the cheapest airlines to fly from Ko Samui to London one-way?

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?

What is the cheapest month to book a flight from Ko Samui to London?

Travelling to a place near Ko Samui?

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 13 June 2025.