Highland Airways operates in Scotland and Wales
Troubled Highland Airways, which operates flights in Scotland and Wales, has said it is continuing discussions with potential new investors.
The airline said severe winter weather had hampered flights and in turn cut income, adding to difficult trading.
The company said several parties were pursuing their interest in investing in the airline with "urgency and vigour".
Online bookings have reopened following a temporary suspension, but bookings are not being taken beyond Sunday.
In a statement, Highland Airways said: "Flights beyond Sunday cannot currently be booked, and prospective travellers are asked to check back at the end of the weekend.
"It is hoped that at that stage we will be close to knowing whether the long-term future has been secured, and full functionality can then be restored.
"In the meantime Highland Airways appreciates all the messages of support it has been receiving, and requests its passengers' indulgence and patience, whilst we work through this difficult period."
The airline flies between Scottish islands and the mainland and also operates a service between Anglesey and Cardiff.