£1,988 Cheap British Airways flights from London to Siem Reap Angkor Intl. Airport (LHR→SAI)

View £1,988 flight on Wed, 5 Nov 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 25% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

British Airways flights from London to Siem Reap Angkor Intl. Airport (LHR→SAI)

Prices were available within the past 7 days and start at £1,988 for one-way flights and £742 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Wed, 19 Nov - Fri, 5 Dec
LHR
London
SAI
Siem Reap
£742 Return, found 6 days ago
£742
Return
found 6 days ago
Select British Airways flight, departing Wed, 19 Nov from London to Siem Reap, returning Fri, 5 Dec, priced at £742 found 6 days ago
Flight from London to Siem Reap Angkor Intl. Airport route information
Origin airport
Heathrow
Destination airport
Siem Reap Angkor Intl. Airport
Airlines serving
Air France, Austrian Airlines, British Airways, China Eastern Airlines, Emirates, Etihad Airways, Finnair, KLM, Lufthansa, Qatar Airways, Singapore Airlines, Swiss International Air Lines, Thai Airways International, Turkish Airlines, Vietnam Airlines
Popular airline
Etihad Airways
Distance
9774 km
*Available to Expedia members.