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Cheap Flights from London to Siem Reap starting at CNY 704

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Cheapest time to fly from London to Siem Reap

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the lowest average weekly prices of the corresponding route on Trip.com.
Cheapest Airlines flying from London to Siem Reap

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Vueling Airlines
From S$ 477
easyJet
From S$ 487
China Eastern Airlines
From S$ 552
British Airways
From S$ 571
Saudia
From S$ 574
Air China
From S$ 599
Shenzhen Airlines
From S$ 599
Wizz Air Malta
From S$ 609
Etihad Airways
From S$ 633
Oman Air
From S$ 669
ANA airlines

Find more flights and airlines

Alternative Routes from London to Siem Reap

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from London to Siem Reap.

  • Cheapest
    Vueling Airlines
    LGW
    18:40
    40h 50m
    2 transfer
    SAI
    17:30
    London Gatwick Airport - Siem Reap Angkor International Airport
    Tue, Jul 2Vueling Airlines
    S$ 477
  • easyJet
    LTN
    19:05
    40h 25m
    2 transfer
    SAI
    17:30
    London Luton Airport - Siem Reap Angkor International Airport
    Tue, Jul 2easyJet
    S$ 487
  • easyJet
    SEN
    11:25
    48h 5m
    2 transfer
    SAI
    17:30
    London Southend Airport - Siem Reap Angkor International Airport
    Mon, Apr 29easyJet
    S$ 493
  • easyJet
    SEN
    11:25
    48h 5m
    2 transfer
    SAI
    17:30
    London Southend Airport - Siem Reap Angkor International Airport
    Mon, Apr 29easyJet
    S$ 493
    Find More Flights

Frequently Asked Questions

  • When to buy flight tickets from London (LON) to Siem Reap (REP) the cheapest?

    Airlines adjust prices for flights from London to Siem Reap based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much is a flight from London (LON) to Siem Reap (REP) cost?

    According to Trip.com's data, the lowest price is around S$ 1,507.
  • What is the transportation method from the main airport to downtown in Siem Reap?

    • The distance from Siem Reap Angkor International Airport to downtown is about 39km, by taxi about 50 minutes.
  • How many airports in Siem Reap?

How to find a cheap flight from London to Siem Reap

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from London to Siem Reap. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Find cheapest flight ticket from London to Siem Reap

Cheapest direct flight price

S$ 704

Cheapest month

April

Peak season for travel

December

Flight distance

9,783.08km

Popular airline

Eva Air