USM - LHR

฿12,372 Find Cheap Flights from Ko Samui to London Heathrow Airport – Compare and Save

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Everything you should know

Cheapest return flight
฿29,991
Typical prices: ฿41,820-฿49,208
Multiple Airlines
Thu 25/10Thu 1/11
USM - LHR • 2 stops
Cheapest one-way flight
฿12,372
Typical prices: ฿20,579-฿26,322
Multiple Airlines
Mon 24/12
USM - LHR • 3 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 • 13% price drop
August
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Bangkok Suvarnabhumi (BKK)
Cheapest • Avg ฿46,436 (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!
Flight Deals
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

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
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
Fri 23 Oct - Fri 30 Oct
Multiple Airlines Logo
06:00 - 19:30USM  Ko Samui-LHR London Heathrow
43h 30m2 stops Bangkok Suvarnabhumi Mumbai Chhatrapati Shivaji Intl
Multiple Airlines Logo
13:30 - 07:10LHR  London Heathrow-USM Ko Samui
34h 40m2 stops Mumbai Chhatrapati Shivaji Intl Bangkok Suvarnabhumi
฿33,752Multiple Airlines
Sun 25 Oct - Sun 1 Nov
Multiple Airlines Logo
13:25 - 14:45USM  Ko Samui-LHR London Heathrow
32h 20m2 stops Singapore Changi Manama Bahrain Intl
Multiple Airlines Logo
08:25 - 10:35LHR  London Heathrow-USM Ko Samui
19h 10m2 stops Muscat Seeb Bangkok Suvarnabhumi
฿33,785Multiple Airlines
Tue 15 Dec - Fri 15 Jan
Multiple Airlines Logo
19:00 - 11:30USM  Ko Samui-LHR London Heathrow
23h 30m2 stops Phuket City New Delhi Indira Gandhi Intl
Multiple Airlines Logo
19:25 - 19:50LHR  London Heathrow-USM Ko Samui
17h 25m2 stops Vienna Intl Bangkok Suvarnabhumi
฿34,643Multiple Airlines
Wed 7 Oct - Wed 14 Oct
Multiple Airlines Logo
06:00 - 06:30USM  Ko Samui-LHR London Heathrow
30h 30m2 stops Bangkok Suvarnabhumi Doha Hamad Intl
Multiple Airlines Logo
16:00 - 17:45LHR  London Heathrow-USM Ko Samui
19h 45m2 stops Doha Hamad Intl Bangkok Suvarnabhumi
฿37,315Multiple Airlines
Sat 27 Feb - Sun 28 Feb
Multiple Airlines Logo
07:55 - 07:30USM  Ko Samui-LHR London Heathrow
30h 35m2 stops Bangkok Suvarnabhumi Riyadh King Khaled Intl
Multiple Airlines Logo
14:15 - 20:25LHR  London Heathrow-USM Ko Samui
23h 10m2 stops Jeddah King Abdulaziz Intl Bangkok Suvarnabhumi
฿38,041Multiple Airlines
Tue 15 Dec - Fri 15 Jan
Multiple Airlines Logo
07:00 - 19:35USM  Ko Samui-LHR London Heathrow
19h 35m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
17:45 - 21:20LHR  London Heathrow-USM Ko Samui
20h 35m2 stops Beijing Capital Bangkok Suvarnabhumi
฿39,492Multiple Airlines
Fri 23 Oct - Fri 30 Oct
Multiple Airlines Logo
07:50 - 19:15USM  Ko Samui-LHR London Heathrow
17h 25m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
21:10 - 07:10LHR  London Heathrow-USM Ko Samui
27h 00m2 stops Shenzhen Bangkok Suvarnabhumi
฿39,525Multiple Airlines
Wed 7 Oct - Wed 14 Oct
Multiple Airlines Logo
19:00 - 06:30USM  Ko Samui-LHR London Heathrow
17h 30m2 stops Phuket City Doha Hamad Intl
Multiple Airlines Logo
14:45 - 14:45LHR  London Heathrow-USM Ko Samui
18h 00m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi
฿39,855Multiple Airlines
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 from Ko Samui to London Heathrow Airport with more confidence.

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

Monday is the cheapest day of the week to fly from Ko Samui to London Heathrow Airport and is 6% cheaper than the average day. Friday is the most expensive day with flight prices 39% higher than average. Based on deals found by KAYAK users in the last 12 months.

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Key details for Ko Samui to London Heathrow Airport flights

Low season

November

Cheapest flight

฿12,372
Most popular time to fly (12% more expensive on average)
Flights 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 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 Heathrow Airport?

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

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

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

    • Economy class
    • Premium Economy Class

  • 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
    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 Heathrow Airport?

    Yes. Being flexible with your travel dates can save you up to 33% on the Ko Samui to London Heathrow Airport 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 Heathrow Airport?

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

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

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

  • 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 ฿29,991 to ฿78,688. That means the highest observed fare was about 3x 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 ฿13,913, which is 40% below the typical average for this route.

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

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

    London Heathrow Airport (LHR) hosts 5 major car hire companies, with daily rates starting from around ฿230 for economy cars. Top options include:
    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Hertz

  • 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 ฿41,820 to ฿49,208, with an average of ฿45,457 over the past 12 months. Anything below ฿41,820 counts as a good deal.

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 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 Heathrow Airport trip for September. Fares historically average ฿39,394 return in that month – typically ฿12,966 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

Car rentals in London
Hotels in London