Search for cheap flights and last-minute deals with Netflights. We've scanned all the flights from London City Airport to Koh Samui, across the two airlines that offer this route. We've found that 14 / Jan / 2026 is the cheapest date to travel at the moment, but it's best to go through the results to see which flight suits you.
There are 50 flights from London City Airport to or via Koh Samui every week. Out of the two available airlines, the most popular ones are KLM & Lufthansa. But that doesn’t necessarily mean they’ll be the best option for your travel dates. To see as many flights as possible, try widening your search to include other departure airports.
Your flight from London City Airport to Koh Samui will take at least 18 hrs 25 mins. On average, it takes 19 hrs 5 mins to fly the 9868 km distance. Take a look at flight times to see which one works best for you.
You can also search by month, which will reveal the cheapest time of the week to fly.
