USM - LHR

฿11,653 Find Cheap Flights from Ko Samui to London Heathrow Airport – Compare and Save

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Everything you should know

Cheapest return flight
฿33,710
Typical prices: ฿42,814-฿49,768
Multiple Airlines
Mon 17/12Sat 20/1
USM - LHR • 2 stops
Cheapest one-way flight
฿12,227
Typical prices: ฿21,410-฿26,863
Multiple Airlines
Tue 6/11
USM - LHR • 2 stops
Direct flights
Not available
There are currently no direct flights between Ko Samui and London Heathrow Airport. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
September
Cheapest • 22% price drop
August
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Bangkok Suvarnabhumi (BKK)
Cheapest • Avg ฿47,380 (return)
Singapore Changi (SIN)
Shortest trip • 17h 59m (one-way)
Insights
Insights
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We hope you enjoy your trip to London Heathrow Airport!
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Booking Insights
Flight Deals

Cheap Flights from Ko Samui to Heathrow (USM-LHR)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Ko Samui to Heathrow

Thu 17 Dec - Wed 20 Jan
Multiple Airlines Logo
17:40 - 11:30USM  Ko Samui-LHR London Heathrow
24h 50m2 stops Bangkok Suvarnabhumi New Delhi Indira Gandhi Intl
Multiple Airlines Logo
21:00 - 09:20LHR  London Heathrow-USM Ko Samui
29h 20m2 stops Shanghai Pu Dong Bangkok Suvarnabhumi
฿33,710Multiple Airlines
Thu 17 Dec - Wed 20 Jan
Multiple Airlines Logo
21:10 - 12:05USM  Ko Samui-LHR London Heathrow
21h 55m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
Multiple Airlines Logo
16:30 - 20:25LHR  London Heathrow-USM Ko Samui
20h 55m3 stops Rome Fiumicino Abu Dhabi Zayed Intl Bangkok Suvarnabhumi
฿33,980Multiple Airlines
Thu 17 Dec - Wed 20 Jan
Multiple Airlines Logo
18:30 - 11:30USM  Ko Samui-LHR London Heathrow
24h 00m2 stops Bangkok Suvarnabhumi New Delhi Indira Gandhi Intl
Multiple Airlines Logo
21:20 - 20:25LHR  London Heathrow-USM Ko Samui
16h 05m1 stop Bangkok Suvarnabhumi
฿37,527Multiple Airlines
Mon 7 Dec - Mon 14 Dec
Multiple Airlines Logo
21:10 - 17:00USM  Ko Samui-LHR London Heathrow
26h 50m2 stops Bangkok Suvarnabhumi Stockholm Arlanda
Multiple Airlines Logo
14:45 - 20:25LHR  London Heathrow-USM Ko Samui
22h 40m3 stops Paris Charles de Gaulle Abu Dhabi Zayed Intl Bangkok Suvarnabhumi
฿38,202Multiple Airlines
Thu 17 Dec - Wed 20 Jan
เอทิฮัดแอร์เวย์ Logo
19:00 - 12:05USM  Ko Samui-LHR London Heathrow
24h 05m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
เอทิฮัดแอร์เวย์ Logo
20:55 - 21:20LHR  London Heathrow-USM Ko Samui
17h 25m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi
฿39,452เอทิฮัดแอร์เวย์
Thu 17 Dec - Wed 20 Jan
Multiple Airlines Logo
12:15 - 06:35USM  Ko Samui-LHR London Heathrow
25h 20m2 stops Bangkok Suvarnabhumi Manama Bahrain Intl
Multiple Airlines Logo
09:30 - 15:40LHR  London Heathrow-USM Ko Samui
23h 10m2 stops Manama Bahrain Intl Bangkok Suvarnabhumi
฿39,722Multiple Airlines
Mon 7 Dec - Mon 14 Dec
เอทิฮัดแอร์เวย์ Logo
21:10 - 12:05USM  Ko Samui-LHR London Heathrow
21h 55m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
เอทิฮัดแอร์เวย์ Logo
08:40 - 10:35LHR  London Heathrow-USM Ko Samui
18h 55m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi
฿40,398เอทิฮัดแอร์เวย์
Thu 5 Nov - Mon 9 Nov
เอทิฮัดแอร์เวย์ Logo
12:30 - 06:40USM  Ko Samui-LHR London Heathrow
25h 10m2 stops Phuket City Abu Dhabi Zayed Intl
เอทิฮัดแอร์เวย์ Logo
13:55 - 15:10LHR  London Heathrow-USM Ko Samui
18h 15m2 stops Abu Dhabi Zayed Intl Phuket City
฿40,432เอทิฮัดแอร์เวย์
Thu 17 Dec - Wed 20 Jan
เอทิฮัดแอร์เวย์ Logo
19:00 - 12:05USM  Ko Samui-LHR London Heathrow
24h 05m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
เอทิฮัดแอร์เวย์ Logo
20:55 - 21:20LHR  London Heathrow-USM Ko Samui
17h 25m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi
฿40,465เอทิฮัดแอร์เวย์
Thu 5 Nov - Mon 9 Nov
โอมานแอร์ Logo
14:15 - 05:55USM  Ko Samui-LHR London Heathrow
22h 40m2 stops Bangkok Suvarnabhumi Muscat Seeb
โอมานแอร์ Logo
08:25 - 10:35LHR  London Heathrow-USM Ko Samui
19h 10m2 stops Muscat Seeb Bangkok Suvarnabhumi
฿40,600โอมานแอร์
Booking Insights

Price, demand, and travel trends for Ko Samui to London Heathrow Airport flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

Which airline is the cheapest to fly from Ko Samui to London Heathrow Airport?

เอทิฮัดแอร์เวย์ (฿39,452) and โอมานแอร์ (฿40,600) are the cheapest airlines to fly return from Ko Samui to London Heathrow Airport according to KAYAK data over the last 5 days.

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Key details for Ko Samui to London Heathrow Airport flights

Low season

January

Cheapest flight

฿12,227
Beat the crowds with an average 64% drop in travellers.
The most popular month to fly with an average 79% increase in travellers.
One-way flight from Ko Samui to London Heathrow Airport

When to book flights from Ko Samui to Heathrow

Are your dates flexible? Find out the best times to travel from Ko Samui to Heathrow based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price

Your Ko Samui to London Heathrow Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • Which cabin classes can I book on flights from Ko Samui to London Heathrow Airport?

    Only Economy class is available on flights from Ko Samui to London Heathrow Airport.

  • How long is a flight from Ko Samui to London Heathrow Airport?

    A direct flight from Ko Samui to London Heathrow Airport takes 00m, covering 15,914 km.

  • Do I need a passport to fly from Ko Samui to London Heathrow Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Ko Samui to London Heathrow Airport flight?

    Return flights from Ko Samui to London Heathrow Airport range from ฿42,814 to ฿49,768, with an average of ฿47,178 over the past 12 months. Anything below ฿42,814 counts as a good deal.

  • Have flight prices from Ko Samui to London Heathrow Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, return flight prices on this route showed a wide range, from about ฿33,710 to ฿314,930. That means the highest observed fare was about 9x higher than the lowest one.

  • How are flight prices from Ko Samui to London Heathrow Airport looking right now?

    One-way fares from Ko Samui to London Heathrow Airport are currently lower than usual. Average one-way flight prices are about ฿13,359, which is 43% below the typical average for this route.

  • Which car hire options are available at London Heathrow Airport (LHR)?

    London Heathrow Airport (LHR) hosts 5 major car rental companies, with daily rates starting from around ฿238 for economy cars. Top options include:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

  • Which airports can I use when flying from Ko Samui to London Heathrow Airport?

    Flights from Ko Samui to London Heathrow Airport usually depart from Ko Samui (USM) and arrive at London Heathrow (LHR).

  • Which airports do connecting flights from Ko Samui to London Heathrow Airport pass through?

    Connecting flights from Ko Samui to London Heathrow Airport most commonly pass through:

    • Bangkok Suvarnabhumi (BKK) – 96% of one-stop connections
    • Singapore Changi (SIN) – 4% of one-stop connections

  • Can I save money by using flexible dates for flights from Ko Samui to London Heathrow Airport?

    Yes. Flexible dates can save you up to 33% on flights from Ko Samui to London Heathrow Airport. Monday is the cheapest departure day at ฿43,877 return on average, while Friday is the most expensive at ฿64,819, a difference of ฿20,942.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different stopover airport from Ko Samui to London Heathrow Airport?

    Flying via Bangkok Suvarnabhumi (BKK) gives the shortest average 1-stop total travel time of 16h 02m, compared to 17h 59m via Singapore Changi (SIN).

  • What is the time difference between Ko Samui and London Heathrow Airport?

    London Heathrow Airport is 7 hours behind Ko Samui (British Time vs Indochina Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in London Heathrow Airport?

    Some of the most popular sights in London Heathrow Airport are Emirates Stadium, New London Theatre, and Marble Arch. These are among the most viewed places in London Heathrow Airport on KAYAK.

Your guide to booking Ko Samui to London Heathrow Airport flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Monday departure and avoid flying on Friday. On this route, Monday flights average ฿43,877, which is about ฿20,942 less than Friday fares (32% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Ko Samui to London Heathrow Airport trip for September. Fares historically average ฿36,817 return in that month – typically ฿16,787 less than the most expensive month, which is April (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to London Heathrow Airport.

    • Hilton London Heathrow Airport

More options for your flight from Ko Samui to Heathrow

Complete your trip to London with a hotel stay or car hire

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