USM - LHR

$577 Find Cheap Flights from Ko Samui to London - Compare and Save

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Everything you should know

Cheapest round-trip
$1,106
Typical prices: $1,268-$1,473
Multiple Airlines
Sun 12/23Sun 12/30
USM - LHR • 2 stops
Cheapest one-way
$577
Typical prices: $633-$801
Multiple Airlines
Fri 1/26
USM - LHR • 2 stops
Nonstop 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 • 21% price drop
August
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Bangkok Suvarnabhumi (BKK)
Cheapest • Avg $1,400 (round-trip)
Singapore Changi (SIN)
Shortest trip • 17h 16m (one-way)
Insights
Insights
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We hope you love your trip to London Heathrow Airport!
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Flight Deals

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

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

Recent round-trip flight deals from Ko Samui to London

Wed, Dec 23 - Wed, Dec 30
Multiple Airlines Logo
7:00 am - 6:35 amUSM  Ko Samui-LHR London Heathrow
30h 35m2 stops Bangkok Suvarnabhumi New Delhi Indira Gandhi Intl
Multiple Airlines Logo
8:30 pm - 11:55 amLHR  London Heathrow-USM Ko Samui
32h 25m3 stops Mumbai Chhatrapati Shivaji Intl Bangkok Suvarnabhumi Phuket City
$1,106Multiple Airlines
Wed, Dec 23 - Wed, Dec 30
Multiple Airlines Logo
7:40 pm - 2:30 pmUSM  Ko Samui-LHR London Heathrow
25h 50m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
Multiple Airlines Logo
4:05 pm - 8:25 pmLHR  London Heathrow-USM Ko Samui
21h 20m2 stops Xiamen Gaoqi Intl Bangkok Suvarnabhumi
$1,166Multiple Airlines
Wed, Nov 25 - Sun, Nov 29
Etihad Airways Logo
8:20 pm - 12:05 pmUSM  Ko Samui-LHR London Heathrow
22h 45m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
Etihad Airways Logo
8:40 am - 10:35 amLHR  London Heathrow-USM Ko Samui
18h 55m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi
$1,199Etihad Airways
Wed, Nov 25 - Sun, Nov 29
Etihad Airways Logo
8:20 pm - 12:05 pmUSM  Ko Samui-LHR London Heathrow
22h 45m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
Etihad Airways Logo
8:40 am - 10:35 amLHR  London Heathrow-USM Ko Samui
18h 55m2 stops Abu Dhabi Zayed Intl Bangkok Suvarnabhumi
$1,205Etihad Airways
Wed, Nov 25 - Sun, Nov 29
Etihad Airways Logo
8:20 pm - 12:05 pmUSM  Ko Samui-LHR London Heathrow
22h 45m2 stops Bangkok Suvarnabhumi Abu Dhabi Zayed Intl
Etihad Airways Logo
1:55 pm - 3:10 pmLHR  London Heathrow-USM Ko Samui
18h 15m2 stops Abu Dhabi Zayed Intl Phuket City
$1,208Etihad Airways
Thu, Dec 17 - Wed, Jan 20
EVA Air Logo
7:15 am - 7:05 pmUSM  Ko Samui-LHR London Heathrow
18h 50m1 stop Bangkok Suvarnabhumi
EVA Air Logo
9:20 pm - 7:50 pmLHR  London Heathrow-USM Ko Samui
15h 30m1 stop Bangkok Suvarnabhumi
$1,388EVA Air
Wed, Dec 23 - Wed, Dec 30
Multiple Airlines Logo
8:40 am - 7:05 pmUSM  Ko Samui-LHR London Heathrow
17h 25m1 stop Bangkok Suvarnabhumi
Multiple Airlines Logo
4:05 pm - 8:25 pmLHR  London Heathrow-USM Ko Samui
21h 20m2 stops Xiamen Gaoqi Intl Bangkok Suvarnabhumi
$1,409Multiple Airlines
Wed, Nov 25 - Sun, Nov 29
EVA Air Logo
8:30 am - 7:05 pmUSM  Ko Samui-LHR London Heathrow
17h 35m1 stop Bangkok Suvarnabhumi
EVA Air Logo
9:20 pm - 8:25 pmLHR  London Heathrow-USM Ko Samui
16h 05m1 stop Bangkok Suvarnabhumi
$1,417EVA Air
Wed, Nov 25 - Sun, Nov 29
EVA Air Logo
8:30 am - 7:05 pmUSM  Ko Samui-LHR London Heathrow
17h 35m1 stop Bangkok Suvarnabhumi
EVA Air Logo
9:20 pm - 8:25 pmLHR  London Heathrow-USM Ko Samui
16h 05m1 stop Bangkok Suvarnabhumi
$1,423EVA Air
Wed, Nov 25 - Sun, Nov 29
EVA Air Logo
8:30 am - 7:05 pmUSM  Ko Samui-LHR London Heathrow
17h 35m1 stop Bangkok Suvarnabhumi
EVA Air Logo
9:20 pm - 8:25 pmLHR  London Heathrow-USM Ko Samui
16h 05m1 stop Bangkok Suvarnabhumi
$1,427EVA Air
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?

Etihad Airways ($1,199) and EVA Air ($1,388) are the cheapest airlines to fly round-trip from Ko Samui to London Heathrow Airport according to KAYAK data over the last 5 days.

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Expert advice

Expert advice for your flight from Ko Samui to London

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Marisa Garcia

Marisa Garcia

Expert on Iberia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Duncan Madden

Duncan Madden

Expert on British Airways

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more

Key details for Ko Samui to London Heathrow Airport flights

Low season

February

Cheapest flight

$577
Beat the crowds with an average 66% drop in travelers.
The most popular month to fly with an average 72% increase in travelers.
One-way flight from Ko Samui to London Heathrow 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 round-trip 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.

  • What 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

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

    A nonstop flight from Ko Samui to London Heathrow Airport takes 00m, covering 6,144 miles.

  • 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?

    Round-trip flights from Ko Samui to London Heathrow Airport range from $1,268 to $1,473, with an average of $1,388 over the past 12 months. Anything below $1,268 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, round-trip prices on this route showed a wide range, from about $1,106 to $5,336. That means the highest observed fare was about 5x 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 in line with typical prices for this route. Average one-way fares are about $692.

  • What car rental options are available at London Heathrow Airport (LHR)?

    London Heathrow Airport (LHR) hosts 5 major car rental companies, with daily rates averaging $39 for economy cars. Top options include:

    • GREEN MOTION
    • DRIVALIA
    • Europcar
    • Alamo
    • Rentacar

  • 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) - 93% of one-stop connections
    • Singapore Changi (SIN) - 7% 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 $1,299 round-trip on average, while Friday is the most expensive at $1,919, a difference of $620.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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

    Flying via Bangkok Suvarnabhumi (BKK) gives the shortest average 1-stop total travel time at 16h 02m, compared with 17h 16m 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 Hyde Park and Buckingham Palace. 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 $1,299, about $620 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 $1,090 round-trip in that month - typically $497 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 London

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