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

DISCOUNT CODE (OPTIONAL)

Deals on London (LHR) to Phnom Penh (PNH) flights

Book flights to Phnom Penh PNH

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Book flights to Phnom Penh PNH
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

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*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

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.)