What is the cheapest airline that flies from Ko Samui to London Heathrow?

Oman Air is the most popular carrier operating from Ko Samui to London Heathrow

When did momondo last update prices for flights from Ko Samui Airport to London Heathrow Airport?

Prices for flights from Ko Samui Airport to London Heathrow Airport are refreshed on a daily basis.

How old do you have to be to fly from Ko Samui Airport to London Heathrow Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ko Samui Airport to London Heathrow Airport.

What documentation or ID do you need to fly to London Heathrow Airport?

The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£254 Cheap Flights from Ko Samui to London Heathrow Airport in 2026/27

Find the cheapest flights from Ko Samui to London

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

12:00 - 06:40USM Ko Samui-LHR London Heathrow

25h 40m2 stops Singapore Changi Abu Dhabi Zayed Intl

08:40 - 17:10LHR London Heathrow-USM Ko Samui

25h 30m2 stops Abu Dhabi Zayed Intl Singapore Changi

£701Multiple Airlines

Mon, 16 Nov - Mon, 23 Nov

08:15 - 09:35USM Ko Samui-LHR London Heathrow

32h 20m2 stops Phuket City Oslo Gardermoen

13:55 - 18:25LHR London Heathrow-USM Ko Samui

21h 30m2 stops Stockholm Arlanda Phuket City

£708Multiple Airlines

Sun, 1 Nov - Sat, 28 Nov

21:10 - 14:30USM Ko Samui-LHR London Heathrow

48h 20m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl

13:30 - 19:50LHR London Heathrow-USM Ko Samui

23h 20m2 stops Mumbai Chhatrapati Shivaji Intl Bangkok Suvarnabhumi

£750Multiple Airlines

Tue, 17 Nov - Tue, 24 Nov

21:10 - 14:55USM Ko Samui-LHR London Heathrow

24h 45m2 stops Bangkok Suvarnabhumi Istanbul

12:30 - 20:25LHR London Heathrow-USM Ko Samui

24h 55m2 stops Xiamen Gaoqi Intl Bangkok Suvarnabhumi

£763Multiple Airlines

Wed, 18 Nov - Wed, 25 Nov

19:10 - 14:30USM Ko Samui-LHR London Heathrow

50h 20m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl

08:45 - 20:25LHR London Heathrow-USM Ko Samui

28h 40m2 stops New Delhi Indira Gandhi Intl Bangkok Suvarnabhumi

£775Multiple Airlines

Sun, 15 Nov - Sun, 22 Nov

07:55 - 11:05USM Ko Samui-LHR London Heathrow

34h 10m2 stops Bangkok Suvarnabhumi Mumbai Chhatrapati Shivaji Intl

13:00 - 07:45LHR London Heathrow-USM Ko Samui

35h 45m2 stops New Delhi Indira Gandhi Intl Bangkok Suvarnabhumi

£778Multiple Airlines

Sun, 15 Nov - Sun, 22 Nov

21:10 - 14:55USM Ko Samui-LHR London Heathrow

24h 45m2 stops Bangkok Suvarnabhumi Istanbul

07:00 - 15:35LHR London Heathrow-USM Ko Samui

25h 35m3 stops Geneva Geneve-Cointrin Shanghai Pu Dong Bangkok Suvarnabhumi

£818Multiple Airlines

Wed, 18 Nov - Wed, 25 Nov

14:15 - 18:25USM Ko Samui-LHR London Heathrow

35h 10m2 stops Bangkok Suvarnabhumi Muscat Seeb

08:25 - 10:35LHR London Heathrow-USM Ko Samui

19h 10m2 stops Muscat Seeb Bangkok Suvarnabhumi

£843Oman Air

Thu, 5 Nov - Mon, 9 Nov

14:15 - 18:25USM Ko Samui-LHR London Heathrow

35h 10m2 stops Bangkok Suvarnabhumi Muscat Seeb

08:25 - 10:35LHR London Heathrow-USM Ko Samui

19h 10m2 stops Muscat Seeb Bangkok Suvarnabhumi

£846Oman Air

Thu, 5 Nov - Mon, 9 Nov

14:15 - 18:25USM Ko Samui-LHR London Heathrow

35h 10m2 stops Bangkok Suvarnabhumi Muscat Seeb

20:05 - 19:50LHR London Heathrow-USM Ko Samui

40h 45m2 stops Muscat Seeb Bangkok Suvarnabhumi

£847Oman Air

Thu, 5 Nov - Mon, 9 Nov

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Oman Air flights from Ko Samui to London Heathrow Airport

Our best Oman Air deals on Ko Samui to London Heathrow Airport flight tickets

Oman Air

5 Nov

USM14:15Ko Samui

35h 10m

2 stops

LHR18:25London Heathrow

9 Nov

LHR08:25London Heathrow

19h 10m

2 stops

USM10:35Ko Samui

£843

Oman Air

5 Nov

USM14:15Ko Samui

35h 10m

2 stops

LHR18:25London Heathrow

9 Nov

LHR08:25London Heathrow

19h 10m

2 stops

USM10:35Ko Samui

£846

Oman Air

5 Nov

USM14:15Ko Samui

35h 10m

2 stops

LHR18:25London Heathrow

9 Nov

LHR20:05London Heathrow

40h 45m

2 stops

USM19:50Ko Samui

£847

EVA Air flights from Ko Samui to London Heathrow Airport

Our best EVA Air deals on Ko Samui to London Heathrow Airport flight tickets

EVA Air

17 Nov

USM07:55Ko Samui

18h 10m

1 stop

LHR19:05London Heathrow

24 Nov

LHR21:20London Heathrow

16h 05m

1 stop

USM20:25Ko Samui

£966

EVA Air

18 Nov

USM08:30Ko Samui

17h 35m

1 stop

LHR19:05London Heathrow

25 Nov

LHR21:20London Heathrow

16h 05m

1 stop

USM20:25Ko Samui

£983

EVA Air

16 Nov

USM07:00Ko Samui

19h 05m

1 stop

LHR19:05London Heathrow

23 Nov

LHR21:20London Heathrow

16h 05m

1 stop

USM20:25Ko Samui

£985

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Mon 16/11

12:00-06:40

2 stops25h 40m

London Heathrow

Mon 23/11

08:40-17:10

2 stops25h 30m

£701

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Sun 1/11

08:15-09:35

2 stops32h 20m

London Heathrow

Sat 28/11

13:55-18:25

2 stops21h 30m

£708

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Tue 17/11

21:10-14:30

2 stops48h 20m

London Heathrow

Tue 24/11

13:30-19:50

2 stops23h 20m

£750

Fastest return journey

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Wed 18/11

21:10-14:55

2 stops24h 45m

London Heathrow

Wed 25/11

12:30-20:25

2 stops24h 55m

£763

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Sun 15/11

19:10-14:30

2 stops50h 20m

London Heathrow

Sun 22/11

08:45-20:25

2 stops28h 40m

£775

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Sun 15/11

07:55-11:05

2 stops34h 10m

London Heathrow

Sun 22/11

13:00-07:45

2 stops35h 45m

£778

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Wed 18/11

21:10-14:55

2 stops24h 45m

London Heathrow

Wed 25/11

07:00-15:35

3 stops25h 35m

£818

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Thu 5/11

14:15-18:25

2 stops35h 10m

London Heathrow

Mon 9/11

08:25-10:35

2 stops19h 10m

£843

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Thu 5/11

14:15-18:25

2 stops35h 10m

London Heathrow

Mon 9/11

08:25-10:35

2 stops19h 10m

£846

Ko SamuiLondon

USM Ko Samui - LHR London Heathrow

USMLHR

Ko Samui

Thu 5/11

14:15-18:25

2 stops35h 10m

London Heathrow

Mon 9/11

20:05-19:50

2 stops40h 45m

£847

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ko Samui to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Can stopping save me money on Ko Samui to London Heathrow Airport flights?

You could potentially save up to 2% on your flight if you consider stops on a Ko Samui to London Heathrow Airport flight.

How have Ko Samui to London Heathrow Airport flight prices changed over time?

When to book flights from Ko Samui to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ko Samui to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Ko Samui to London Heathrow Airport (USM to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ko Samui to London Heathrow Airport

Best price found	£254
Fastest flight time	30h 30m
Direct flights	None

The best one-way flight to London Heathrow Airport from Ko Samui in the past 72 hours is £254. The best return flight deal from Ko Samui to London Heathrow Airport found on momondo in the last 72 hours is £701.

The fastest flight from Ko Samui to London Heathrow Airport takes 30h 30m

There are no direct flights from Ko Samui to London Heathrow Airport. There are no popular flight routes from Ko Samui to London Heathrow Airport.

Search flight deals

Frequently asked questions about flying from Ko Samui to London Heathrow Airport

How far is Ko Samui to London Heathrow by plane?
The straight-line distance from Ko Samui to London Heathrow is 6145.4 mi. Typically, this will take 30h 30m by plane in normal conditions.
When did momondo last update prices for flights from Ko Samui Airport to London Heathrow Airport?
Prices for flights from Ko Samui Airport to London Heathrow Airport are refreshed on a daily basis.
How old do you have to be to fly from Ko Samui Airport to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ko Samui Airport to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Eastbourne

Wembley

Gatwick

Milton Keynes

Stratford-upon-Avon

Southend-on-Sea

Luton

Northampton

Slough

Ipswich

Swindon

Maidstone

Folkestone

Hastings

Ilford

Canterbury

Poole

Salisbury

Chichester

Colchester

Why use momondo?

Why should I use momondo to find a flight deal from Ko Samui to London?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ko Samui to London. momondo saves you time and could save you money on your trip.

Can I find flights from Ko Samui to London with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to London from Ko Samui with this policy.

How can momondo help me find flights from Ko Samui to London?

Once you have performed a search for Ko Samui to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ko Samui to London right now. Can momondo alert me if prices change?

Price alerts on flights to London from Ko Samui are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.