USM - LON

฿10,336 Find Cheap Flights from Ko Samui to London – Compare and Save

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Everything you should know

Cheapest return flight
฿33,710
Typical prices: ฿43,438-฿55,556
Multiple Airlines
Mon 17/12Sat 20/1
USM - LHR • 2 stops
Cheapest one-way flight
฿10,336
Typical prices: ฿20,199-฿26,863
Multiple Airlines
Wed 12/12
USM - LGW • 1 stop
Direct flights
Not available
There are currently no direct flights between Ko Samui and London. You'll need to take a connecting flight to reach the destination.
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Top routes
USM - LGW
Cheapest • 21% average savings
USM - LHR
Most popular
Insights
Insights
When to travel
September
Cheapest • 23% price drop
August
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Bangkok Suvarnabhumi (BKK)
Cheapest • Avg ฿46,960 (return)
Singapore Changi (SIN)
Shortest trip • 17h 59m (one-way)
Insights
Insights
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We hope you enjoy your trip to London!
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Flight Deals

Cheap Flights from Ko Samui to London (USM-LON)

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

Recent return flight deals from Ko Samui to London

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
Mon 7 Dec - Mon 14 Dec
Multiple Airlines Logo
21:10 - 18:00USM  Ko Samui-STN London Stansted
27h 50m2 stops Bangkok Suvarnabhumi Stockholm Arlanda
Multiple Airlines Logo
07:30 - 14:30STN  London Stansted-USM Ko Samui
24h 00m3 stops Bergamo Orio Al Serio Dubai Intl Krabi
฿35,432Multiple Airlines
Mon 7 Dec - Mon 14 Dec
Multiple Airlines Logo
12:00 - 07:10USM  Ko Samui-LGW London Gatwick
26h 10m2 stops Singapore Changi Shanghai Pu Dong
Multiple Airlines Logo
13:40 - 21:20LGW  London Gatwick-USM Ko Samui
24h 40m3 stops Paris Charles de Gaulle New Delhi Indira Gandhi Intl Bangkok Suvarnabhumi
฿36,243Multiple 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
Mon 7 Dec - Mon 14 Dec
Multiple Airlines Logo
19:00 - 18:00USM  Ko Samui-STN London Stansted
30h 00m3 stops Phuket City Bangkok Suvarnabhumi Stockholm Arlanda
Multiple Airlines Logo
16:35 - 21:20STN  London Stansted-USM Ko Samui
21h 45m3 stops Paris Charles de Gaulle New Delhi Indira Gandhi Intl Bangkok Suvarnabhumi
฿38,304Multiple Airlines
Thu 5 Nov - Mon 9 Nov
Emirates Logo
18:15 - 20:50USM  Ko Samui-LGW London Gatwick
33h 35m2 stops Phuket City Dubai Intl
Emirates Logo
23:55 - 10:40LGW  London Gatwick-USM Ko Samui
27h 45m2 stops Dubai Intl Phuket City
฿38,472Emirates
Thu 5 Nov - Mon 9 Nov
Emirates Logo
18:15 - 20:50USM  Ko Samui-LGW London Gatwick
33h 35m2 stops Phuket City Dubai Intl
Emirates Logo
09:40 - 10:40LGW  London Gatwick-USM Ko Samui
18h 00m2 stops Dubai Intl Phuket City
฿38,540Emirates
Thu 5 Nov - Mon 9 Nov
Emirates Logo
11:10 - 11:40USM  Ko Samui-LGW London Gatwick
31h 30m2 stops Phuket City Dubai Intl
Emirates Logo
20:25 - 10:40LGW  London Gatwick-USM Ko Samui
31h 15m2 stops Dubai Intl Phuket City
฿38,608Emirates
Booking Insights

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

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

What is the cheapest Ko Samui to London flight route?

Ko Samui (USM) to London Gatwick Airport (LGW) is the cheapest Ko Samui to London route, averaging ฿38,455 return. Other Ko Samui to London routes average ฿53,641, based on KAYAK data over the past 12 months.

What's the cheapest day of the week to fly from Ko Samui to London?

Based on deals KAYAK users found in the last 12 months, Monday is the cheapest day of the week to fly from Ko Samui to London. It's 11% cheaper than the average day, while Friday is the most expensive, with prices 26% higher.

Find deals

Key details for Ko Samui to London flights

Low season

December

Cheapest flight

฿10,336
Beat the crowds with an average 64% drop in travellers.
The most popular month to fly with an average 104% increase in travellers.
One-way flight from Ko Samui to London Gatwick Airport

When to book flights from Ko Samui to London

Are your dates flexible? Find out the best times to travel from Ko Samui to London 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 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?

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

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

    A direct flight from Ko Samui to London takes 00m, covering 15,877 km.

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

    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 flight?

    Return flights from Ko Samui to London range from ฿43,438 to ฿55,556, with an average of ฿48,103 over the past 12 months. Anything below ฿43,438 counts as a good deal.

  • Have flight prices from Ko Samui to London 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 ฿277,687. That means the highest observed fare was about 8x higher than the lowest one.

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

    One-way fares from Ko Samui to London are currently lower than usual. Average one-way flight prices are about ฿11,721, which is 50% below the typical average for this route.

  • What car rental options are available in London?

    Since London is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
    Near London Heathrow Airport (LHR) – daily rates from around ฿238:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

    Near London Gatwick Airport (LGW) – daily rates from around ฿252:

    • GREEN MOTION
    • DRIVALIA
    • U-Save
    • Europcar
    • Alamo

    Near London City Airport (LCY) – daily rates from around ฿347:

    • GREEN MOTION
    • Budget
    • Hertz
    • Avis
    • Sixt

    Near London Stansted Airport (STN) – daily rates from around ฿333:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • U-Save

    Near London Luton Airport (LTN) – daily rates from around ฿358:

    • GREEN MOTION
    • DRIVALIA
    • Alamo
    • Europcar
    • U-Save

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

    Flights from Ko Samui to London usually depart from Ko Samui (USM) and may arrive at several airports in London area, including London City (LCY), London Gatwick (LGW), London Heathrow (LHR), London Luton (LTN), London Southend (SEN) and London Stansted (STN).

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

    Connecting flights from Ko Samui to London 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?

    Yes. Flexible dates can save you up to 30% on flights from Ko Samui to London. Monday is the cheapest departure day at ฿42,999 return on average, while Friday is the most expensive at ฿61,036, a difference of ฿18,037.

    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?

    Flying via Bangkok Suvarnabhumi (BKK) gives the shortest average 1-stop total travel time of 16h 03m, compared to 17h 59m via Singapore Changi (SIN).

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

    London 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?

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

Your guide to booking Ko Samui to London 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 ฿42,999, which is about ฿18,037 less than Friday fares (30% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Ko Samui to London trip for September. Fares historically average ฿36,817 return in that month – typically ฿23,746 less than the most expensive month, which is August (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, hotels close to the airport you're flying into can be a convenient option.

    Near London City Airport

    • Aloft London Excel
    • Good Hotel London
    • Novotel London Excel

    Near London Heathrow Airport

    • Hilton London Heathrow Airport

    Near London Gatwick Airport

    • Premier Inn London Gatwick Airport

More options for your flight from Ko Samui to London

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

Car rentals in London
Hotels in London