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

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Cathay Pacific Flight 635 Route Deals From $315

The cheapest prices found with in the last 7 days for return flights were $300 and $315 for one-way flights to Changi for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Sep 4 - Wed, Sep 10
HKG
Hong Kong Intl.
SIN
Changi
$300 Roundtrip, found 9 hours ago
$300
Roundtrip
found 9 hours ago
Select Cathay Pacific flight, departing Thu, Sep 4 from Hong Kong Intl. to Changi, returning Wed, Sep 10, priced at $300 found 9 hours ago