USM - LON

฿10,624 Find Cheap Flights from Ko Samui to London – Compare and Save

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Everything you should know

Cheapest return flight
฿28,473
Typical prices: ฿41,820-฿49,058
Multiple Airlines
Thu 25/10Thu 1/11
USM - LGW • 2 stops
Cheapest one-way flight
฿10,624
Typical prices: ฿19,067-฿26,245
Multiple Airlines
Mon 24/12
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.
Insights
Insights
Top routes
USM - LGW
Cheapest • 14% average savings
USM - LHR
Most popular
Insights
Insights
When to travel
October
Cheapest • 42% price drop
August
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Bangkok Suvarnabhumi (BKK)
Cheapest • Avg ฿45,986 (return)
Singapore Changi (SIN)
Shortest trip • 17h 59m (one-way)
Insights
Insights
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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

Sun 25 Oct - Sun 1 Nov
Multiple Airlines Logo
08:15 - 07:45USM  Ko Samui-LGW London Gatwick
30h 30m2 stops Phuket City Sharjah
Multiple Airlines Logo
08:45 - 17:30LGW  London Gatwick-USM Ko Samui
25h 45m2 stops Sharjah Phuket City
฿28,473Multiple Airlines
Tue 15 Dec - Fri 15 Jan
Multiple Airlines Logo
08:15 - 20:50USM  Ko Samui-LGW London Gatwick
19h 35m1 stop Phuket City
Multiple Airlines Logo
11:35 - 19:50LGW  London Gatwick-USM Ko Samui
25h 15m2 stops Beijing Capital Bangkok Suvarnabhumi
฿28,671Multiple Airlines
Tue 15 Dec - Fri 15 Jan
Multiple Airlines Logo
07:00 - 21:05USM  Ko Samui-LGW London Gatwick
21h 05m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
06:20 - 07:10LGW  London Gatwick-USM Ko Samui
17h 50m1 stop Bangkok Suvarnabhumi
฿29,133Multiple Airlines
Wed 7 Oct - Wed 14 Oct
Multiple Airlines Logo
08:45 - 08:45USM  Ko Samui-LGW London Gatwick
30h 00m2 stops Bangkok Suvarnabhumi Sharjah
Multiple Airlines Logo
10:00 - 20:50LGW  London Gatwick-USM Ko Samui
28h 50m2 stops Sharjah Bangkok Suvarnabhumi
฿29,232Multiple Airlines
Sun 25 Oct - Sun 1 Nov
Multiple Airlines Logo
12:25 - 06:40USM  Ko Samui-LHR London Heathrow
25h 15m2 stops Krabi Abu Dhabi Zayed Intl
Multiple Airlines Logo
06:00 - 11:30LHR  London Heathrow-USM Ko Samui
22h 30m3 stops Vienna Intl Sharjah Bangkok Suvarnabhumi
฿29,991Multiple Airlines
Wed 7 Oct - Wed 14 Oct
Multiple Airlines Logo
15:25 - 10:40USM  Ko Samui-LGW London Gatwick
25h 15m3 stops Phuket City Abu Dhabi Zayed Intl Dublin
Multiple Airlines Logo
16:35 - 20:30LGW  London Gatwick-USM Ko Samui
21h 55m3 stops Václav Havel Prague Sharjah Bangkok Suvarnabhumi
฿30,947Multiple Airlines
Wed 7 Oct - Wed 14 Oct
Multiple Airlines Logo
17:55 - 10:40USM  Ko Samui-LGW London Gatwick
22h 45m3 stops Phuket City Abu Dhabi Zayed Intl Dublin
Multiple Airlines Logo
16:35 - 20:25LGW  London Gatwick-USM Ko Samui
21h 50m3 stops Václav Havel Prague Sharjah Phuket City
฿30,980Multiple Airlines
Sun 25 Oct - Sun 1 Nov
Multiple Airlines Logo
18:15 - 09:10USM  Ko Samui-LGW London Gatwick
21h 55m2 stops Phuket City Istanbul
Multiple Airlines Logo
06:25 - 15:35LGW  London Gatwick-USM Ko Samui
26h 10m3 stops Athens Eleftherios V. Sharjah Bangkok Suvarnabhumi
฿31,112Multiple Airlines
Wed 7 Oct - Wed 14 Oct
Multiple Airlines Logo
15:25 - 09:55USM  Ko Samui-LGW London Gatwick
24h 30m2 stops Phuket City Istanbul
Multiple Airlines Logo
16:35 - 21:35LGW  London Gatwick-USM Ko Samui
23h 00m3 stops Václav Havel Prague Sharjah Bangkok Suvarnabhumi
฿31,475Multiple Airlines
Mon 8 Mar - Thu 11 Mar
Multiple Airlines Logo
17:05 - 11:05USM  Ko Samui-LHR London Heathrow
25h 00m2 stops Bangkok Suvarnabhumi Mumbai Chhatrapati Shivaji Intl
Multiple Airlines Logo
13:30 - 17:00LHR  London Heathrow-USM Ko Samui
20h 30m2 stops Mumbai Chhatrapati Shivaji Intl Bangkok Suvarnabhumi
฿33,026Multiple Airlines
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 from Ko Samui to London 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 ฿37,562 return. Other Ko Samui to London routes average ฿46,844, based on KAYAK data over the past 12 months.

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

Monday is the cheapest day of the week to fly from Ko Samui to London and is 7% cheaper than the average day. Friday is the most expensive day with flight prices 38% higher than average. Based on deals found by KAYAK users in the last 12 months.

Find deals

Key details for Ko Samui to London flights

Low season

November

Cheapest flight

฿10,624
Most popular time to fly (11% more expensive on average)
Flights 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 route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

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

    Two cabin classes are available on flights from Ko Samui to London:

    • Economy class
    • Premium Economy Class

  • 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
    Together, these airports account for 100% of one-stop bookings on this route.

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

    Yes. Being flexible with your travel dates can save you up to 33% on the Ko Samui to London route. Monday is the cheapest departure day at ฿42,858 return on average, while Friday is the most expensive at ฿63,313, a difference of ฿20,456. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What popular places can I visit in London?

    Some of the most popular sights in London are Paddington Station, Emirates Stadium, and Covent Garden Tube Station. These are among the most viewed places in London on KAYAK.

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

    A direct flight from Ko Samui to London takes 0h 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.

  • 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 ฿28,473 to ฿76,427. That means the highest observed fare was about 3x 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 ฿12,445, which is 46% below the typical average for this route.

  • 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 6 hours behind Ko Samui (British Time vs Indochina Time). Plan for the time shift when scheduling connections or first-day activities.

  • 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 ฿230:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

    Near London Gatwick Airport (LGW) – daily rates from around ฿278:

    • 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 Luton Airport (LTN) – daily rates from around ฿355:

    • GREEN MOTION
    • DRIVALIA
    • Alamo
    • Europcar
    • Budget

    Near London Stansted Airport (STN) – daily rates from around ฿325:

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

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

    Return flights from Ko Samui to London range from ฿41,820 to ฿49,058, with an average of ฿45,725 over the past 12 months. Anything below ฿41,820 counts as a good deal.

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 instead of Friday. On this route, Monday flights average ฿42,858 – about ฿20,456 less than Friday (32% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Ko Samui to London trip for October. Fares historically average ฿26,625 return in that month – typically ฿36,688 less than the most expensive month, which is December (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

    · Crowne Plaza London Docklands By IHG
    · Good Hotel London
    · Aloft 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