Cheap flights from London to Siem Reap

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Siem Reap (REP)
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The best prices from London to Siem Reap are usually found in September or May, booked 59 days in advance, depart on a Tuesday or Monday and return on a Monday

How to find the cheapest flight from
London (LON) to Siem Reap (REP)

All the information you need to plan the best LON to REP flight in 2021: compare London to Siem Reap flight prices with the expected peak season, weather and rainfall in Siem Reap.
LON - REP
Price
£482 - £912

Popular in

December

High demand for flights, 35% potential price rise

Cheapest in

September

Best time to find cheap flights, 19% potential price drop

Average price

£684

Average for round-trip flights in April 2021

Round-trip from

£482

From London to Siem Reap

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly return from London to Siem Reap?

It’s generally more expensive to depart on a Monday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

How far in advance should I book a flight from London to Siem Reap?

Users have found that booking a flight from London to Siem Reap at least 58 days early can save you up to 6% on average compared to booking a flight this week. If booking 58 days before your flight isn’t an option for you, users have found flights from London to Siem Reap for as little as £571 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as £571 for flights departing within the next 3 days.

What is the cheapest month to fly from London to Siem Reap?

September is one of the best times of the year to fly to Siem Reap from London. Prices for September average £594 per person but you can even find prices for as low as £312. The most expensive prices can be found in the month of December. Opting for a September flight can save you 53% on your journey compared to booking in September

When is the cheapest time to fly from London to Siem Reap (LON - REP)?

It’s typically best to fly out from London to Siem Reap in the morning. Doing so could potentially save you 26% on the flight price compared to flying at midday, which is usually more expensive.

London to Siem Reap 2021 flight deals

Cheap flights to Siem Reap from London found for this year
24 Dec - 7 Jan
£954pp
LHR
London Heathrow
Vietnam Airlines
 
1 STOP
REP
Siem Reap
REP
Siem Reap
Vietnam Airlines
 
1 STOP
LHR
London Heathrow
24 Dec - 7 Jan
£973pp
LHR
London Heathrow
Vietnam Airlines
   
2 STOPS
REP
Siem Reap
REP
Siem Reap
Vietnam Airlines
 
1 STOP
LHR
London Heathrow
24 Dec - 7 Jan
£996pp
LHR
London Heathrow
Vietnam Airlines
   
2 STOPS
REP
Siem Reap
REP
Siem Reap
Vietnam Airlines
   
2 STOPS
LHR
London Heathrow

Related info for your journey

Useful info, stats and facts about <span class="emphasized">London</span> to <span class="emphasized">Siem Reap</span> flights.

Flight FAQs

From London to Siem Reap

Are flight prices decreasing from London to Siem Reap due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both London and Siem Reap for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Which airlines flying from London to Siem Reap have flexible cancellations due to COVID-19?

Thai Airways, Vietnam Airlines, and China Southern are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

What airport do you fly into for flights to Siem Reap from London?

Siem Reap (REP), located 4.6 mi from the city center, is the airport you fly into when you book flights from London to Siem Reap. 7 airlines have flights to Siem Reap from London on a regular basis. Booking flights from London to Siem Reap should not be difficult; the airport handles an average of 0 inbound flights from London per day.

Can I find flights from London to Siem Reap for under £1,508 on Cheapflights?

Yes, there are multiple flights from London to Siem Reap for under £1,508. The cheapest flight booked recently is on Multiple Airlines for just £1,470, but on average you can expect to pay £1,647.

Are there direct flights from London to Siem Reap for under £1,436 on Cheapflights?

There are no direct flights from London to Siem Reap, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Alternative routes for London to Siem Reap

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Siem Reap

Things to know before you go - useful duration and weather info for your trip from London to Siem Reap.
Today's exchange rate
£1 = 5,594.05៛

Airports servicing London

Gatwick (LGW)
City (LCY)
Stansted (STN)
Luton (LTN)
Southend (SEN)

Airports servicing Siem Reap

Top 6 airlines flying from London to Siem Reap

The chart below displays the airlines Cheapflights users travelling from London to Siem Reap choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
China Southern
£456 £739 No cancel fee 69%

We couldn't confirm the COVID-19 safety measures taken by China Southern. Please check directly on their website for additional information.

Search China Southern flights
Thai Airways
£629 £797 No cancel fee 77%
Search Thai Airways flights
Cathay Pacific
£679 £853 No cancel fee 72%
Search Cathay Pacific flights
Singapore Airlines
£617 £854 No cancel fee 81%
Search Singapore Airlines flights
Vietnam Airlines
£657 £856 No cancel fee 81%
Search Vietnam Airlines flights
Emirates
£934 £991 No cancel fee 75%
Search Emirates flights
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