Meanwhile, Ms Sturgeon also announcing the Scottish government a new £12m fund to help people losing their jobs in oil and gas industries to gain new skills and find new work.
Speaking to BBC Radio Scotland's Good Morning Scotland programme: Ms Sturgeon said: "What will be announced today is a £20m package of investment to expand the terminal at Aberdeen Airport, to improve passenger facilities, to improve baggage handling facilities.
"Obviously this is investment that is very important and very welcome for the fabric of Aberdeen airport.
"I think it is investment that is well-timed because, not withstanding the difficulties the oil industry is facing now, the difficulties therefore the north east economy is facing, this is a huge vote of confidence in the future of this part of Scotland so it's very welcome indeed."
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