Cheap Flights London to Phnom Penh from £283

Flight FAQs

• Which airlines offer the cheapest flights from London (LON) to Phnom Penh (KTI)?

  Based on Trip.com data, China Southern Airlines offers one-way fares as low as £283 on Cheapest nonstop routes (e.g. LGW to KTI on Fri, Aug 28), while Shenzhen Airlines offers Cheapest nonstop round-trips from £466 departing on Sun, Sep 6 and returning on Sun, Sep 13.

• Which airlines offer direct flights from London to Phnom Penh?

  At the moment, you can catch a direct flight from London to Phnom Penh with the following airlines, including: Turkmenistan Airlines Ryanair Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• When is the best time to book flights from London to Phnom Penh?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from London to Phnom Penh is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How can I find the best deals on flights from London to Phnom Penh?

  To find best deals on flights from London to Phnom Penh, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Fri, Aug 28, with one-way flights priced at just £283.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is China Southern Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Phnom Penh travel is around January.
  · Get exclusive promo codes for Trip.com app users.

• When is the best time to book a flight from London to Phnom Penh to get the best price?

  The cheapest months to fly from London to Phnom Penh is October, when demand for travel is lower.

• Which upcoming date is the cheapest for flights from London to Phnom Penh?

  After crunching the numbers on our July flight calendar, it's currently cheapest to fly from London to Phnom Penh on July 28, 2026 with China Southern Airlines, with prices starting at £788.

• Which airports can I fly through when travelling to Phnom Penh from London?

  You can land at any one of the following hubs in Phnom Penh, with Heathrow Airport to Techo International Airport (LHR-KTI) is by far the most common option on this route: Techo International Airport (KTI) Phnom Penh International Airport (PNH).

• What is the time difference between London and Phnom Penh?

  The time difference between Phnom Penh and London is 7h.

• How can I change or cancel my flight ticket from London to Phnom Penh?

  Tickets can only be changed or cancelled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.