Smith joins from his role as marketing consultant at easyJet, and replaces Simon Lilley, Flybe’s long-serving marketer who, in January, announced he was to leave the airline after 14 years.
Smith has been working at easyJet since 2011. He began his career with Future Publishing in the 1990s, before moving on to marketing roles with Talk Talk, Homeserve, Barclaycard and BMI baby.
Paul Simmons, Flybe's chief commercial officer, said: "We’re delighted to welcome Martin on board. He joins us as a highly experienced marketing professional with a proven track record of delivering innovative and exciting work.
"His is exactly the expertise we need as we continue to revamp our customer offering and continue on our journey to becoming Europe’s best regional airline."
Separately, former marketer Lilley has announced he is to join ACCA (the Association of Chartered Certified Accountants) as its director of sales and marketing.
Flybe’s last major marketing overhaul came in 2012, when it revealed a £9m brand repositioning, in an effort to distance itself from negative perceptions of the low-cost airline model.
The campaign, by ad agency Souk, encompassed TV, press, outdoor, radio and digital. It introduced the strap-line, ‘Making flying better.’