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

Flying on SWISS is currently your cheapest option to London, with prices starting at £688. Additional return tickets that might be worth considering are offered by EVA Air and Singapore Airlines, with the lowest prices starting at £862 and £1,420, respectively. You may be able to fly from Ko Samui to London for 28% less than the average price by searching for these airlines.

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 Thai Airways (£410), Emirates (£435), and EVA Air (£446).

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 City, Ko Samui - London Gatwick or Ko Samui - London Heathrow 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 £956. You can even find prices in October for less than £956, as users have found deals to London from as low as £413. 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 66%.

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.

£315+ Flights from Ko Samui to London

Cheap flight deals from Ko Samui to London

Round-trip from	£688
One-way from	£315
Popular in	January
Cheapest in	October
Average price	£1,003

SWISS
14/5-21/5
4 total stops
35h 15m total
Ko Samui to London

Search Deals

21/5
2 total stops
41h 00m total
Ko Samui to London

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (£149 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 7% potential price decrease (£49 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 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 15 April 2025.

Wed 14/509:30USM - LHR

2 stops18h 15mSWISS

Wed 21/513:45LHR - USM

2 stops17h 00mSWISS

Deal found 14/4£688

Wed 14/509:30USM - LCY

2 stops29h 20mSWISS

Wed 21/513:05LCY - USM

2 stops17h 40mSWISS

Deal found 14/4£734

Thu 29/507:00USM - LGW

2 stops29h 40mMultiple Airlines

Thu 5/611:35LGW - USM

2 stops26h 55mMultiple Airlines

Deal found 14/4£737

Wed 14/517:50USM - LHR

1 stop19h 25mMultiple Airlines

Wed 21/510:00LHR - USM

2 stops24h 35mMultiple Airlines

Deal found 14/4£824

Wed 14/508:45USM - LHR

1 stop16h 35mEVA Air

Wed 21/521:35LHR - USM

1 stop16h 55mEVA Air

Deal found 14/4£862

Thu 29/508:45USM - LGW

1 stop27h 40mSingapore Airlines

Thu 5/610:15LGW - USM

1 stop26h 15mSingapore Airlines

Deal found 14/4£1,420

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 15 April 2025.

Wed 14/509:30USM - LHR

2 stops18h 15mSWISS

Wed 21/513:45LHR - USM

2 stops17h 00mSWISS

Deal found 14/4£688

Thu 29/507:00USM - LGW

2 stops29h 40mMultiple Airlines

Thu 5/611:35LGW - USM

2 stops26h 55mMultiple Airlines

Deal found 14/4£737

Wed 14/508:45USM - LHR

1 stop16h 35mEVA Air

Wed 21/521:35LHR - USM

1 stop16h 55mEVA Air

Deal found 14/4£862

Thu 29/508:45USM - LGW

1 stop27h 40mSingapore Airlines

Thu 5/610:15LGW - USM

1 stop26h 15mSingapore Airlines

Deal found 14/4£1,420

Wed 14/509:30USM - LCY

2 stops29h 20mSWISS

Wed 21/513:05LCY - USM

2 stops17h 40mSWISS

Deal found 14/4£734

Wed 14/517:50USM - LHR

1 stop19h 25mMultiple Airlines

Wed 21/510:00LHR - USM

2 stops24h 35mMultiple Airlines

Deal found 14/4£824

Last-minute flights from Ko Samui to London
Discover last-minute flight deals from Ko Samui to London. Data last updated 15 April 2025 and is based on user searches.

Wed 14/509:30USM - LHR

2 stops18h 15mSWISS

Wed 21/513:45LHR - USM

2 stops17h 00mSWISS

Deal found 14/4£688

Wed 14/509:30USM - LCY

2 stops29h 20mSWISS

Wed 21/513:05LCY - USM

2 stops17h 40mSWISS

Deal found 14/4£734

Wed 14/517:50USM - LHR

1 stop19h 25mMultiple Airlines

Wed 21/510:00LHR - USM

2 stops24h 35mMultiple Airlines

Deal found 14/4£824

Wed 14/508:45USM - LHR

1 stop16h 35mEVA Air

Wed 21/521:35LHR - USM

1 stop16h 55mEVA Air

Deal found 14/4£862

Thu 29/507:00USM - LGW

2 stops29h 40mMultiple Airlines

Thu 5/611:35LGW - USM

2 stops26h 55mMultiple Airlines

Deal found 14/4£737

Thu 29/508:45USM - LGW

1 stop27h 40mSingapore Airlines

Thu 5/610:15LGW - USM

1 stop26h 15mSingapore Airlines

Deal found 14/4£1,420

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 15 April 2025.

Wed 21/508:00USM - LHR

2 stops41h 00mMultiple Airlines

Deal found 14/4£315

Fri 30/507:00USM - LGW

2 stops38h 25mMultiple Airlines

Deal found 14/4£327

Fri 6/609:30USM - LHR

1 stop15h 40mThai Airways

Deal found 14/4£410

Fri 6/616:25USM - LHR

2 stops26h 00mEmirates

Deal found 14/4£435

Fri 6/616:25USM - LGW

2 stops26h 10mEmirates

Deal found 14/4£435

Sat 21/608:00USM - LHR

1 stop17h 20mEVA Air

Deal found 14/4£446

Tue 16/908:45USM - LCY

2 stops38h 45mSWISS

Deal found 14/4£488

Tue 16/916:25USM - LGW

1 stop20h 00mSingapore Airlines

Deal found 14/4£653

Wed 23/421:00USM - LCY

3 stops26h 15mMultiple Airlines

Deal found 14/4£826

Wed 23/416:45USM - LHR

1 stop19h 50mQantas Airways

Deal found 14/4£860

Sun 27/709:15USM - LHR

3 stops29h 00mSWISS

Deal found 14/4£1,024

Sat 26/410:55USM - LHR

1 stop39h 40mCathay Pacific

Deal found 14/4£1,065

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 - LHR

USMLHR

Ko Samui

Wed 14/5

09:30-21:45

2 stops18h 15m

London Heathrow

Wed 21/5

13:45-12:45

2 stops17h 00m

£688

Ko SamuiLondon

USM - LCY

USMLCY

Ko Samui

Wed 14/5

09:30-08:50

2 stops29h 20m

London City

Wed 21/5

13:05-12:45

2 stops17h 40m

£734

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Thu 29/5

07:00-06:40

2 stops29h 40m

London Gatwick

Thu 5/6

11:35-20:30

2 stops26h 55m

£737

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 14/5

17:50-07:15

1 stop19h 25m

London Heathrow

Wed 21/5

10:00-16:35

2 stops24h 35m

£824

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 14/5

08:45-19:20

1 stop16h 35m

London Heathrow

Wed 21/5

21:35-20:30

1 stop16h 55m

£862

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Thu 29/5

08:45-06:25

1 stop27h 40m

London Gatwick

Thu 5/6

10:15-18:30

1 stop26h 15m

£1,420

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Wed 21/5

08:00-19:00

2 stops41h 00m

£315

Ko SamuiLondon

USM - LGW

USMLGW

Ko Samui

Fri 30/5

07:00-15:25

2 stops38h 25m

£327

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 6/6

09:30-19:10

1 stop15h 40m

£410

Ko SamuiLondon

USM - LHR

USMLHR

Ko Samui

Fri 6/6

16:25-12:25

2 stops26h 00m

£435

Flights are sorted by cheapest return flights first.

Deals found on 14/4

Showing 1-10 of 20 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

EVA Air

8.4

Very Good

1,176 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

EVA Air

8.4

Very Good

1,176 reviews

EVA Air

8.4

Very Good

1,176 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Singapore Airlines

8.1

Very Good

1,288 reviews

EVA Air

8.4

Very Good

1,176 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Emirates

8.0

Very Good

3,198 reviews

EVA Air

8.4

Very Good

1,176 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Thai Airways

7.7

Good

323 reviews

EVA Air

8.4

Very Good

1,176 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Qantas Airways

7.5

Good

818 reviews

EVA Air

8.4

Very Good

1,176 reviews

Check prices

Reviews

1 / 20

6.0

Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

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 SWISS is currently your cheapest option to London, with prices starting at £688. Additional return tickets that might be worth considering are offered by EVA Air and Singapore Airlines, with the lowest prices starting at £862 and £1,420, respectively. You may be able to fly from Ko Samui to London for 28% less than the average price by searching for these airlines.
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 Thai Airways (£410), Emirates (£435), and EVA Air (£446).
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 Gatwick or Ko Samui - London Heathrow 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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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 £315

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 21/5. 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 15 April 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 15 April 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 15 April 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 15 April 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 15 April 2025.