Book a trip from London to Sydney with Cathay Pacific , fares from GBP849

Deals on London (LHR) to Sydney (SYD) flights

Jun 2025
FromGBP1,293*
Seen 1 day ago
Round trip/Economy
Jul 2025
FromGBP1,487*
Seen 14 hours ago
Round trip/Economy
Aug 2025
FromGBP1,102*
Seen 12 hours ago
Round trip/Economy
GBP1.3K
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RangeGBP1,293-GBP1,865

Lowest fares on flights found by other customers on Cathay Pacific’s official website in the last 48 hours. All fares are subject to change at any time. Other Cathay Pacific Terms & Conditions apply.