With bmi Regional, bmibaby transferred to International Airlines Group ownership on completion of the purchase from Lufthansa.
IAG has consistently said that bmibaby and bmi Regional are not part of its long-term plans.
Progress has been made with a potential buyer for bmi Regional, but so far this has not been possible for bmibaby, despite attempts over many months by both Lufthansa and IAG.
bmibaby has therefore started consultation to look at future options including, subject to that consultation, a proposal to close in September this year.
More top news
Researchers in Boston have created a 'robot cheetah' that they hope will be able to reach top speeds of 30mph.
UK trials of a vaccine for the Ebola virus began today - but some experts complain that the response has been a long time coming.
This September has been the driest so far for more than 50 years, Met Office figures have revealed.