Thai Airways flights from London to Ko Samui (LON - USM)
LON — USM
12 Oct — 19 Oct1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Find Thai Airways flight deals from London to Ko Samui
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Cheapest Thai Airways flights from London to Ko Samui
Explore the most affordable Thai Airways flight options available from London to Ko Samui. Find the lowest fares with prices last updated on 12 September 2026.
Sun 25/1011:50 -
1 stop14h 30m
Sun 1/1118:40 -
1 stop31h 55m
Deal found 10/9£1,055
Sun 18/1021:25 -
1 stop14h 20m
Tue 27/1007:55 -
1 stop29h 45m
Deal found 8/9£1,102
Fri 23/1012:30 -
1 stop16h 45m
Sun 1/1117:05 -
1 stop20h 35m
Deal found 11/9£1,146
Best Thai Airways flights from London to Ko Samui
Discover carefully curated Thai Airways flight deals from London to Ko Samui that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 September 2026.
Sat 13/205:55 -
2 stops19h 45m
Sun 21/217:40 -
2 stops22h 30m
Deal found 12/9£1,075
Sat 24/1021:25 -
1 stop17h 00m
Sat 31/1009:40 -
1 stop16h 55m
Deal found 9/9£1,155
Wed 4/1111:50 -
1 stop14h 30m
Tue 17/1121:30 -
1 stop16h 10m
Deal found 12/9£1,156
Last-minute Thai Airways flights from London to Ko Samui
Discover last-minute Thai Airways flight deals from London to Ko Samui. Data last updated 12 September 2026 and is based on user searches.
Sun 25/1011:50 -
1 stop14h 30m
Sun 1/1118:40 -
1 stop31h 55m
Deal found 10/9£1,055
Sun 18/1021:25 -
1 stop14h 20m
Tue 27/1007:55 -
1 stop29h 45m
Deal found 8/9£1,102
Fri 23/1012:30 -
1 stop16h 45m
Sun 1/1117:05 -
1 stop20h 35m
Deal found 11/9£1,146
One-way Thai Airways flights to Ko Samui
Search for one-way Thai Airways flight options to Ko Samui. Find affordable one-way fares based on user searches. Data last updated 12 September 2026.
Fri 22/121:35 -
1 stop15h 50m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 10/9£617
Wed 18/1111:50 -
1 stop15h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/9£618
Mon 16/1111:50 -
1 stop14h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/9£621
Can I get a flight from London to Ko Samui on Thai Airways for under £888?
Cheapflights currently has 8 LON-USM flights for under £888. Flights to Ko Samui will vary based on many factors, like date and time. Click here to find the best price for your dates on Cheapflights.
Thai Airways flights from London to Ko Samui in 2026
Find detailed information about Thai Airways flights from London to Ko Samui. Explore the options provided by Thai Airways to plan your journey from London to Ko Samui. Data last updated 12 September 2026.
Which month is the cheapest to fly Economy class from London to Ko Samui?
For Economy class flights, the cheapest month to fly this route is May. The most expensive months are December and March.
Rainfall in Ko Samui by month
Plan your trip to Ko Samui by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Ko Samui ranges from 58.0 - 490.0 inches per month. November is typically the wettest month, when rainfall can reach 490.0 mm. February is typically the driest time to visit Ko Samui when rainfall is around 58.0 mm.
Temperature in Ko Samui by month
Plan your trip to Ko Samui by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Ko Samui, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 27.0 C).
When is the best time to book a flight to Ko Samui with Thai Airways?
The best time to book a flight to Ko Samui with Thai Airways is 48 days before departure. On average, fares are higher if you book 40 days before departure.
Best time to book a flight from London to Ko Samui
Have a flexible travel schedule? Discover the best time to fly to Ko Samui from London with our price prediction graph.
LON-USM
LHR-USM
LGW-USM
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
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Fly from London to Ko Samui on another airline
Consider alternative airlines that service the Ko Samui area. Flight routes are based on user searches made on Cheapflights and were last updated on 12 September 2026.
Browse through other Thai Airways flights departing from London. Flight routes are based on user searches made on Cheapflights and were last updated on 12 September 2026.
If Ko Samui is not for you, choose from these other destinations located in Asia. Flight routes are based on user searches made on Cheapflights and were last updated on 12 September 2026.
Browse through some of the most popular routes that Thai Airways offers at this time. Flights are based on user searches made on Cheapflights and were last updated on 12 September 2026.
Read reviews and see what other travellers are saying about their experiences with Thai Airways. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing Thai Airways for your next flight. Reviews last updated 12 September 2026.
Flight attendants are great. Plane very comfortable.
10.0
Wonderful|Feb 2026
Thai Airways. Was echt super goed.
10.0
Wonderful|Jan 2026
Having required wheel chair assistance, I received amazing service from the ground and cabin staff. Everything was a breeze. Flight was comfortable but the entertainment system was quite dated. The chicken noodles served was amazing
1 out of 140
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