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
£526 - £996
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 £527 Average for round-trip flights in september 2020
Round-trip from 526 kr 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 £510 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 £528 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 £665 per person but you can even find prices for as low as £338. 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.

London to Siem Reap 2020 flight deals

Cheap flights to Siem Reap from London found for this year
7 Nov - 22 Nov
£607pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
REP
Siem Reap
REP
Siem Reap
Multiple Airlines
 
1 STOP
LHR
London Heathrow
7 Nov - 22 Nov
£841pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
REP
Siem Reap
REP
Siem Reap
Multiple Airlines
   
2 STOPS
LHR
London Heathrow
16 Nov - 22 Jan
£898pp
LHR
London Heathrow
Multiple airlines
     
3 STOPS
REP
Siem Reap
REP
Siem Reap
Vietnam Airlines
 
1 STOP
LHR
London Heathrow

One-way flights to Siem Reap from London

The cheapest one-way flights from London to Siem Reap
04:00 - 12:30
Vietnam Airlines
2 stops
25h 30m
LHR - REP
Vietnam Airlines
£607
Gotogate
07:40 - 14:40
Multiple Airlines
2 stops
24h 00m
STN - REP
Multiple Airlines
£1,224
FlightHub
16:00 - 17:20
China Eastern
1 stop
18h 20m
LHR - REP
China Eastern
£3,191
KAYAK

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.

Can I find flights from London to Siem Reap for under £700 on Cheapflights?

Yes, there are multiple flights from London to Siem Reap for under £700. The cheapest flight booked recently is on Multiple Airlines for just £607, but on average you can expect to pay £1,007.

Are there direct flights from London to Siem Reap for under £600 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, China Eastern, and Vietnam Airlines can get you from London to Siem Reap in just under 15h 45m. Your travel time can differ by up to 7h 45m. 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 £619. Another option worth looking into is Vietnam Airlines, starting at £722 return. These flights start at 6% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from London to Siem Reap one-way?

To fly one-way, consider booking your trip with Vietnam Airlines, which is currently one of the cheapest options available, starting at £582. Vietnam Airlines is not the only option available. At the moment, China Eastern is another option, for £1,352.

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 = 5,170.74៛

Airports servicing London

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

Airports servicing Siem Reap

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