Cathay Pacific Flight CX138 Deals & Information (2025/2026)

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Cathay Pacific Flight 138 Route Deals From $457

The cheapest prices found with in the last 7 days for return flights were $659 and $457 for one-way flights to Hong Kong Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Jul 24 - Thu, Aug 7
SYD
Kingsford Smith Intl.
HKG
Hong Kong Intl.
$659 Roundtrip, found 8 hours ago
$659
Roundtrip
found 8 hours ago
Select Cathay Pacific flight, departing Thu, Jul 24 from Kingsford Smith Intl. to Hong Kong Intl., returning Thu, Aug 7, priced at $659 found 8 hours ago

Frequently asked questions

What route does flight number CX138 take?
CX138 flies direct from SYD to Chek Lap Kok Intl. Airport. During this journey, you can expect to be in the air for 9 hours and 15 minutes. It’s wise to book ahead to secure your favorite seat.
What terminal does CX138 fly out of?
Direct flights to and from SYD and HKG are served by CX138, and travelers booked on this route normally take off from Terminal 1.
What kind of plane is on flight number CX138?
The route for CX138 is nearly always Kingsford Smith Intl. Airport (SYD) to HKG, and the Boeing 777-300ER is the aircraft model you’ll probably be jetting off with.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your CX138 flight with Travelocity, please visit our Customer Service Portal.