A decision on RAF Lossiemouth and RAF Leuchars is expected from the MoD by July Defence Secretary Liam Fox will face questions from MPs later on the implications for Scotland of the UK government’s cuts in military spending.
Squadron operations have already been disbanded at RAF Kinloss in Moray following a strategic defence review.
Uncertainty remains over the future of RAF Leuchars and RAF Lossiemouth.
Mr Fox is due to appear before Westminster’s Scottish Affairs Committee.
The UK government decided to scrap the fleet of new Nimrod spy planes at Kinloss before they had even entered service.
The three flying squadrons based there were officially disbanded last month.
Local campaigns have been launched to fight the threat of closure at RAF Leuchars in Fife and RAF Lossiemouth in Moray.
The SNP in particular has been arguing that Scotland has already suffered much more than its fair share of military spending cuts.
The defence secretary has insisted that a final decision will be announced this summer.
Scottish Secretary Michael Moore gave evidence about the defence cuts to the Scottish Affairs Committee in November.
He told MPs that officials in his department were compiling information on the economic and social effect of base closures on the Moray economy, which would be passed to the Ministry of Defence before final decisions were made.
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