Cathay Pacific Flight CX635 Deals & Information (2025/2026)

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Cathay Pacific Flight 635 Route Deals From $317

The cheapest prices found with in the last 7 days for return flights were $1,419 and $317 for one-way flights to Changi for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Sep 18 - Mon, Sep 22
HKG
Hong Kong Intl.
SIN
Changi
$1,419 Roundtrip, just found
$1,419
Roundtrip
just found
Select Cathay Pacific flight, departing Thu, Sep 18 from Hong Kong Intl. to Changi, returning Mon, Sep 22, priced at $1,419 just found