Cheap flights from London to Siem Reap from £362

A quick flight from London to Region of Siem Reap can take about 27h 30m. SWISS provides one of the quickest options available for as low as £617. London and Region of Siem Reap are separated by a distance of 6102 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

For one-way options, check prices for Vietnam Airlines. According to our data, you can fly for as low as £454. Users have also found prices from £517 and £561 on Singapore Airlines and Thai Airways, respectively.

Most travelers choose London Heathrow - Siem Reap–Angkor Intl, London Gatwick - Siem Reap–Angkor Intl or London City - Siem Reap–Angkor Intl when deciding on the best route from London to Region of Siem Reap.

Yes. In addition to deals on London to Siem Reap flights, Cheapflights offers holiday packages that include both flights and hotel.

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Siem Reap.

Yes. Cheapflights offers flight deals from London to Siem Reap by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Currently, May is the cheapest month in which you can book a flight from London to Region of Siem Reap (average of £531). Flying from London to Region of Siem Reap in July is currently the most expensive (average of £792). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.