"She's going back to the shop!" they wrote on Twitter.
According to pictures circulating online, the letter "f" was missing from the words "Cathay Pacific", resulting in the final spelling being "Cathay Paciic".
A Hong Kong-based airline has spelt its name wrong on one of its planes.
Travellers spotted the mistake at Hong Kong International Airport and photos were posted to an aviation discussion board on Facebook.
The airline acknowledged the mistake on Twitter and assured customers it would be fixed.
It's unclear how the mistake was made and who is responsible, but the South China Morning Post reports that it will likely cost the airline several thousand dollars to fix.
"The spacing is too on-point for a mishap".
A third commented: "Great that you can have a laugh about this in public".
Cathay Pacific and Boeing jointly announced that the historic first B777-200, line number WA001 and registered B-HNL, will fly from Hong Kong to Tucson September 18 to join 350 historic aircraft on permanent display.