Cheap flights from London to Phnom Penh from $439

Travelers frequently search for route combinations, such as London and New York, Los Angeles, San Francisco, Atlanta, Boston, Washington, D.C., Miami, Orlando, San Diego, Denver, Dallas, Las Vegas, Houston, Phoenix, Chicago, Cincinnati, Austin, Charlotte, Seattle, Minneapolis.

Travelers frequently search for route combinations, such as Phnom Penh and Bangkok, Miami, Nashville, Siem Reap, Ho Chi Minh City, Detroit, Las Vegas, Dallas, Tulsa, Atlanta, New York, Kuala Lumpur, Los Angeles, Philadelphia, Tampa, San Francisco, Minneapolis, Cincinnati, Manila, Denpasar.

London is mainly served by Heathrow. But there are other airports nearby, including Gatwick, London Stansted, Luton, London Southend, London City.

The main airport in London is Heathrow. It is also served by Birmingham, Bristol, East Midlands, Cardiff, Southampton, Bournemouth, Exeter, Norwich, Humberside.

The main airport in Phnom Penh is Phnom Penh International. It is also served by Tan Son Nhat International, Sihanoukville International, Can Tho International, Rach Gia.

Currently, you can fly between London and Phnom Penh with Thai Airways, Etihad Airways, Air China, easyJet, Ryanair.

If you don’t have specific dates for your trip between London and Phnom Penh, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Traveling between London and Phnom Penh, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What’s more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

There are a number of airports in and around London. The main one is Heathrow and other nearby airports include Birmingham, Bristol, East Midlands, Cardiff, Southampton, Bournemouth, Exeter, Norwich, Humberside