Cheap flights from London to Siem Reap

October is the cheapest month on this route, and fares are listed for most of the year, so it pays to compare a few dates before you commit. Late autumn and the weeks around Christmas are busy out of London, while spring and early summer are calmer. Midweek departures, Tuesday to Thursday, usually cost less than a weekend start. If your plans are flexible, move your trip by a week either side of October and watch how the price shifts. Book a few months ahead for the dry-season months, and leave it later only if you are travelling in the quieter stretches.

No airline flies London to Siem Reap non-stop, and none of the carriers on the route is low-cost. Emirates, Turkish Airlines, Singapore Airlines, Gulf Air, Kuwait Airways, Oman Air, China Eastern Airlines, Lufthansa, Lufthansa City Airlines and Air Dolomiti all sell connecting itineraries, with the stop in the Gulf, in Istanbul, in Singapore or in Europe depending on the carrier. Because these are full-service airlines, a checked bag and a meal are common, but what is included still depends on the fare family you choose, so read the conditions. Mixing carriers on one ticket can work out cheaper, though it puts both legs on the same booking.

Siem Reap-Angkor, sometimes listed simply as Angkor, is the airport you land at, and it sits a short drive from the centre of Siem Reap. A taxi or a tuk-tuk into town is quick, and many hotels and guesthouses arrange a pickup if you ask ahead, which is the easiest option after a long journey with a connection behind you. Agree the fare before you get into a tuk-tuk, keep some local currency for the ride, and have your accommodation address written down for the driver. Immigration can be slow when several wide-body arrivals land at once.

Currency

KHR (៛)

Power sockets

Type A, C, G · 230 V

Language

Khmer

Emergency number

117, 118, 119

Driving side

right

Calling code

+855

Internet domain

.kh

Population of Siem Reap

148 k

Time zone

UTC+07 (Asia/Phnom_Penh)

Country facts: Wikidata

• Check which London airport your fare leaves from, since Heathrow, Gatwick, Stansted, Luton and London City are far apart.
• Look at total connection time, not just the fare — a short stop in the Gulf beats an overnight wait in Asia.
• Confirm what baggage the fare includes, because a full-service ticket can still come without a checked bag.
• If the legs are on separate tickets, you re-check your bag and a missed connection is on you, not the airline.
• Check Cambodia's entry rules and that your passport has enough validity left for the trip.
• Aim for October and a midweek departure if you want the lowest fare of the year.