Find a good deal on your flight from London to Siem Reap with Netflights. 624 flights go via this route every week, and we've collected them all to help you find the best deal. If you want to keep your options open, take a look at flights from another airport in London.
Generally, London Heathrow (LHR) is the most popular choice for flights to Siem Reap. And the most popular airlines are Qatar Airways, Etihad Airways & Thai Airways International. But when you fly is just as important as who you fly with. If you're flexible on dates, try searching by month to see when the cheapest flights are.
Last-minute deals can be cheaper, but it's risky. It's best to book flights to Siem Reap in advance to avoid disappointment. Thai Airways International usually have the lowest prices, so keep an eye out for their flights. Flights from London to Siem Reap generally take about 18 hrs 10 mins.
Today, we’ve scanned 1,481 flights, to help you see all the options for your trip to Siem Reap. Once you’ve chosen your flight, why not check out our deals on accommodation and car hire? You’ll find lots of hotels in Cambodia, including some close to the airport – perfect if you're arriving late or leaving early.