Cheap flights from London to Siem Reap

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The best prices from London to Siem Reap are usually found in September or June, booked 56 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)

LON - REP
Price
£518 - £981

Popular in

December

High demand for flights, 33% potential price rise

Cheapest in

September

Best time to find cheap flights, 21% potential price drop

Average price

£556

Average for round-trip flights in October 2020

Round-trip from

£518

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 57 days early can save you up to 9% on average compared to booking a flight this week. If booking 57 days before your flight isn’t an option for you, users have found flights from London to Siem Reap for as little as £640 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 £663 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 £655 per person but you can even find prices for as low as £333. The most expensive prices can be found in the month of December. Opting for a September flight can save you 49% 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.

Cheap flights from London to Siem Reap in October, November 2020

The best prices found for LON to REP flights in October, November
26 Nov - 12 Dec
£1,581pp
LHR
London Heathrow
Multiple airlines
     
3 STOPS
REP
Siem Reap
REP
Siem Reap
Multiple Airlines
     
3 STOPS
LHR
London Heathrow
5 Nov - 5 Dec
£1,595pp
LHR
London Heathrow
Multiple airlines
     
3 STOPS
REP
Siem Reap
REP
Siem Reap
Multiple Airlines
     
3 STOPS
LHR
London Heathrow

London to Siem Reap 2020 flight deals

Cheap flights to Siem Reap from London found for this year
6 Dec - 13 Dec
£684pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
REP
Siem Reap
REP
Siem Reap
Multiple Airlines
 
1 STOP
LHR
London Heathrow
6 Dec - 13 Dec
£786pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
REP
Siem Reap
REP
Siem Reap
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
26 Nov - 12 Dec
£1,581pp
LHR
London Heathrow
Multiple airlines
     
3 STOPS
REP
Siem Reap
REP
Siem Reap
Multiple Airlines
     
3 STOPS
LHR
London Heathrow

One-way flights to Siem Reap from London

The cheapest one-way flights from London to Siem Reap
17:20 - 14:25
Multiple Airlines
2 stops
38h 05m
LHR - REP
Multiple Airlines
£1,625
Kiwi.com
07:25 - 11:20
Multiple Airlines
3 stops
44h 55m
LHR - REP
Multiple Airlines
£568
Kiwi.com
08:25 - 07:50
Multiple Airlines
3 stops
40h 25m
LHR - REP
Multiple Airlines
£730
Kiwi.com

Related info for your journey

Useful info, stats and facts about London to Siem Reap 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?

China Southern, Cathay Pacific, and Qatar Airways 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.

Can I find flights from London to Siem Reap for under £541 on Cheapflights?

Yes, there are multiple flights from London to Siem Reap for under £541. The cheapest flight booked recently is on Cathay Pacific for just £538, but on average you can expect to pay £602.

Are there direct flights from London to Siem Reap for under £541 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.

How long does is the flight from London to Siem Reap?

Cathay Pacific, Finnair, and KLM can get you from London to Siem Reap in just under 15h 35m. Your travel time can differ by up to 3h 55m. Both multi-stop and direct flights can be found to your destination and back.

What are the cheapest airlines to flying from London to Siem Reap return?

Flying on Cathay Pacific is currently your cheapest option to Siem Reap, with prices starting at £538. Additional return tickets that might be worth considering are offered by Singapore Airlines and Vietnam Airlines, with the lowest prices starting at £584 and £611, respectively. These flights start at 17% lower than the current average price 3 months from now.

Alternative routes for London to Siem Reap

Destination information for Siem Reap

Things to know before you go. Useful info for your trip from London to Siem Reap
Today's exchange rate
£1 = 5,216.98៛

Airports servicing London

Heathrow (LHR)
Luton (LTN)
Stansted (STN)
City (LCY)
Southend (SEN)

Airports servicing Siem Reap

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