Book a trip from London to Phnom Penh with Cathay Pacific , fares from GBP865
Direct flights from London with three cabin classes to match your style, your Phnom Penh adventure starts from GBP865
expand_more
1 Passenger(s), Economy
expand_moreDISCOUNT CODE (OPTIONAL)
expand_moretoday
today
Deals on London (LHR) to Phnom Penh (PNH) flights
expand_more
location_on
location_on
Book flights to Phnom Penh PNH
flight_takeoff
flight_land
GBP
From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| London (LHR) | Phnom Penh (KTI) | Round-trip / Economy | 18/02/2026 - 12/05/2026 | From GBP865 Seen 5 hours ago | |
| London (LHR) | Phnom Penh (KTI) | Round-trip / Economy | 23/11/2025 - 01/12/2025 | From GBP881 Seen 1 day ago | |
| London (LHR) | Phnom Penh (KTI) | Round-trip / Economy | 28/12/2025 - 16/01/2026 | From GBP930 Seen 1 day ago | |
| London (LHR) | Phnom Penh (KTI) | Round-trip / Economy | 15/12/2025 - 09/01/2026 | From GBP1,251 Seen 6 hours ago | |
| London (LHR) | Phnom Penh (KTI) | Round-trip / Economy | 10/10/2025 - 17/10/2025 | From GBP1,297 Seen 19 hours ago |
Book Business Class flights to Phnom Penh - selected offers
flight_takeoff
flight_land
GBP
London (LHR)to
Phnom Penh (KTI)18/02/2026 - 12/05/2026FromGBP3,491Seen 5 hours agoRound-tripBusinessLondon (LHR)to
Phnom Penh (KTI)20/10/2025 - 02/11/2025FromGBP4,058Seen 16 hours agoRound-tripBusinessLondon (LHR)to
Phnom Penh (KTI)20/10/2025 - 01/11/2025FromGBP4,644Seen 1 day agoRound-tripBusiness
Explore More Flights from Other Popular Origins
The Cathay Pacific experience
-
Spacious cabins and world-class service
-
Complete flexibility when you book
-
Fresher flavours, now ready for Business
-
Our intuitive digital experience
Flight Deals for Popular Routes on Cathay Pacific
flight_takeoff
flight_land
GBP
There are no fares that match your filter criteria. Please adjust your filters.
There are no fares that match your filter criteria. Please adjust your filters.*Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking.
Travel to Phnom Penh in Premium Economy
London (LHR)to
Phnom Penh (KTI)16/11/2025 - 24/11/2025FromGBP2,202Seen 1 day agoRound-tripPremium Economy
Best fares on flights found by others in the last 48 hours. (Please note that some fares may only apply when there are multiple travellers.)