Cheap flights from Heathrow to Siem Reap

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The best prices from Heathrow to Siem Reap are usually found in September or June, booked 60 days in advance, depart on a Tuesday or Thursday and return on a Monday

How to find the cheapest flight from
Heathrow (LHR) to Siem Reap (REP)

LHR - REP
Price
£667 - £1069
Popular in April High demand for flights, 25% potential price rise
Cheapest in September Best time to find cheap flights, 17% potential price drop
Average price £746 Average for round-trip flights in July 2020
Round-trip from £667 From Heathrow 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 Heathrow to Siem Reap?

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 14% on your flight compared to booking on days when demand is much higher.

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

Travellers have found it’s best to book a flight 57 days in advance to save up to 9% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 57 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Heathrow to Siem Reap 1-2 weeks in advance for as low as £532, or £551 for flights within the next 24 hours.

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

Flights from Heathrow to Siem Reap lean towards being more expensive in December. Prices are generally better when you fly from Heathrow to Siem Reap in September, with the cheapest ticket starting at £345.

Cheap flights from Heathrow to Siem Reap in July, August 2020

The best prices found for LHR to REP flights in July, August
16 Jul - 6 Aug
£1419pp
LHR
London Heathrow
Multiple airlines
     
3 STOPS
REP
Siem Reap
REP
Siem Reap
Multiple Airlines
   
2 STOPS
LHR
London Heathrow

Heathrow to Siem Reap 2020 flight deals

Cheap flights to Siem Reap from Heathrow found for this year
2 Dec - 1 Feb
£656pp
LHR
London Heathrow
Singapore Airlines
 
1 STOP
REP
Siem Reap
REP
Siem Reap
Singapore Airlines
 
1 STOP
LHR
London Heathrow
2 Dec - 1 Feb
£692pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
REP
Siem Reap
REP
Siem Reap
Multiple Airlines
 
1 STOP
LHR
London Heathrow
8 Oct - 15 Oct
£695pp
LHR
London Heathrow
Singapore Airlines
 
1 STOP
REP
Siem Reap
REP
Siem Reap
Singapore Airlines
 
1 STOP
LHR
London Heathrow

Related info for your journey

Useful info, stats and facts about Heathrow to Siem Reap flights.

Flight FAQs

From Heathrow to Siem Reap

Are flight prices decreasing from Heathrow 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 Heathrow 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 Heathrow to Siem Reap for under £700 on Cheapflights?

Yes, there are multiple flights from Heathrow to Siem Reap for under £700. The cheapest flight booked recently is on Singapore Airlines for just £656, but on average you can expect to pay £713.

Are there direct flights from Heathrow to Siem Reap for under £700 on Cheapflights?

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

How popular is this flight route?

Within the past month, 39 users have taken a look at flights from London Heathrow to Siem Reap.

Alternative routes for Heathrow to Siem Reap

Destination information for Siem Reap

Things to know before you go. Useful info for your trip from Heathrow to Siem Reap
Today's exchange rate
£1 = 5072.50៛

Airports servicing London

Airports servicing Siem Reap