Aircraft type for Aria Suite SYD or MEL to HKG.

[SydneyFC]

Attempting to book Aria suites from MEL to HKG in June 2026, I choose CX104, which is reported to be a 777-300ER by all reviewers. However, when I click on Aircraft details in the Cathay website, it states the plane is an A350-900. Does anyone know if this is a mistake or should I go ahead and book based on the flight number?
Thanks for any insight you can provide. Regards, Allan

 

[RB001]

November is showing 77K being used for HKG-MEL, Should we be concerned? These are non aria 777s, right?

CX163 is the Aria flight - some days they have 3 flights, with the third being a non-Aria 777. (Most likely CX105)

 

[sogai]

CX163 is the Aria flight - some days they have 3 flights, with the third being a non-Aria 777. (Most likely CX105)

CX105 and CX163 both showing 77K, not 77J and CX135 is A350

 

[RB001]

CX105 and CX163 both showing 77K, not 77J and CX135 is A350

Hmmm, where are you seeing this?

CX163 is the only of these flights still on sale all 30 days of November, and on Cathay's own website, every day is 77J.

 

[sogai]

I'm seeing this on the Cathay website with their timetable feature. Strange when I go make don't bookings it shows 77J for CX163 but timetable shows 77K.

Either way I was just confused I didn't know they were doing non aria suite 777s, thought it was either A350 or aria suite

 

[RB001]

the Cathay website with their timetable feature

Ah, that explains it then!
Looking there - yes the timetable may be up-to-date as they say, but the aircraft types just take you to generic pages - 77K just happens to be first in their (oddly arranged) drop-down.

 

[marcojim]

For Melbourne, CX104 and CX105 will also be operated by Aria suite equipped aircraft between 11 Nov 2026 and 15 Jan 2027, in addition to the existing CX163/CX178 rotation

Cathay Pacific NW26 361-seater 777-300ER Network – 01NOV26 — AeroRoutes

Published at 1630PCT / 2330GMT 02NOV26 Cathay Pacific during Northern winter 2026/27 season schedules 361-seater Boeing 777-300ER aircraft on following routes, as of 01NOV26. The 361-seater features Aria Suites in Business Class. Hong Kong – Bangkok Suvarnabhumi Selected dates in November 2026

www.aeroroutes.com

 

[LionKing]

For Melbourne, CX104 and CX105 will also be operated by Aria suite equipped aircraft between 11 Nov 2026 and 15 Jan 2027, in addition to the existing CX163/CX178 rotation

Cathay Pacific NW26 361-seater 777-300ER Network – 01NOV26 — AeroRoutes

Published at 1630PCT / 2330GMT 02NOV26 Cathay Pacific during Northern winter 2026/27 season schedules 361-seater Boeing 777-300ER aircraft on following routes, as of 01NOV26. The 361-seater features Aria Suites in Business Class. Hong Kong – Bangkok Suvarnabhumi Selected dates in November 2026

www.aeroroutes.com

I think for Sydney/SYD, Cathay Pacific is operating CX138/139 and CX181/100 with Aria Suite.
However, please note that Cathay Pacific charges a much higher Sydney Premium for airfares which I recommend passengers do not fly out from Sydney to overseas to avoid wasting money to airlines.
Occassionally CX161/162 also uses Aria Suite, however it is not guaranteed.