The agency picked up the business after a pitch against TBWA\Manchester, Isobel and Farm.
Euro RSCG was the incumbent on the account but did not repitch for the business.
The pitch process was handled by Creativebrief and led by the company's commercial director, Julian Carr.
He said: "Bmibaby is already a great brand, but we need to differentiate ourselves even more in a cluttered environment. CBJWT has come up with a great solution that not only builds on what we already have, but doesn't require any alterations to our existing business model."
In August this year, bmi appointed M&C Saatchi to handle its advertising business and MPG to handle its media planning and buying.
Bmibaby, the low-cost arm of bmi, was launched in 2002 and since then has carried more than 19 million passengers from four UK airports to 30 destinations throughout Europe.
.jpg)
.jpg)