
Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Ko Samui (USM). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 5, 2026.
Most accurate provider | BudgetAir 2 stars |
|---|---|
Most trusted provider | BudgetAir 3 stars |
Round-trip from | $957 (Mytrip) |
One-way from | $597 (FlightHub) |
Popular in | December |
Cheapest in | November |
Average price | $1,094 |
Fly from
Fly to
Route
Depart
Return
LondonKo Samui
LHR London Heathrow - USM Ko Samui
LHRUSM
London Heathrow
Sat 1/9
9:00 pm-7:45 am
2 stops27h 45m
Ko Samui
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
LondonKo Samui
LHR London Heathrow - USM Ko Samui
LHRUSM
London Heathrow
Tue 12/15
8:50 pm-12:20 pm
3 stops32h 30m
Ko Samui
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
LondonKo Samui
LHR London Heathrow - USM Ko Samui
LHRUSM
London Heathrow
Mon 1/11
9:40 pm-5:00 pm
2 stops36h 20m
Ko Samui
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
LondonKo Samui
LHR London Heathrow - USM Ko Samui
LHRUSM
London Heathrow
Sun 1/10
8:05 pm-10:35 am
2 stops31h 30m
Ko Samui
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
LondonKo Samui
LHR London Heathrow - USM Ko Samui
LHRUSM
London Heathrow
Thu 1/21
10:00 pm-10:40 am
2 stops29h 40m
Ko Samui
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
LondonKo Samui
LHR London Heathrow - USM Ko Samui
LHRUSM
London Heathrow
Tue 5/4
7:30 pm-5:45 pm
2 stops16h 15m
Ko Samui
Wed 5/19
10:05 am-9:45 pm
2 stops17h 40m
LondonKo Samui
LHR London Heathrow - USM Ko Samui
LHRUSM
London Heathrow
Tue 5/4
7:30 pm-6:30 pm
2 stops17h 00m
Ko Samui
Mon 5/17
8:00 am-9:45 pm
2 stops19h 45m
LondonKo Samui
LHR London Heathrow - USM Ko Samui
LHRUSM
London Heathrow
Sat 1/9
5:50 pm-7:35 pm
1 stop18h 45m
Ko Samui
Wed 12/31
12:00 am-6:00 pm
Nonstop0h 00m
LondonKo Samui
LHR London Heathrow - USM Ko Samui
LHRUSM
London Heathrow
Sat 11/21
4:00 pm-5:00 pm
2 stops18h 00m
Ko Samui
Thu 12/3
9:10 pm-12:15 pm
2 stops22h 05m
LondonKo Samui
LHR London Heathrow - USM Ko Samui
LHRUSM
London Heathrow
Tue 5/4
9:35 pm-6:30 pm
1 stop14h 55m
Ko Samui
Mon 5/17
7:45 pm-7:20 pm
1 stop29h 35m
Everything you need to know about your flight from London Heathrow Airport to Ko Samui
Find useful and relevant information for your journey from Heathrow to Ko Samui. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.