The RAF is to begin aircraft training at Newquay Airport after a deal for a 10-week scheme was secured with the Ministry of Defence.
An airport spokesperson said the "long runways and uncongested airspace was ideal", and passengers would not be affected by the training.
RAF St Mawgan's airfield was handed over to Cornwall Council in 2008 and became part of Newquay Airport.
The training scheme will begin on Tuesday and runs until 30 April.
Al Titterington, managing director of the airport said: "Hopefully this agreement will create further opportunities for military flight operations at Newquay."
RAF St Mawgan's Wing Commander Graham House said: "This agreement has not, to the best of my knowledge, been achieved before in the UK and places Cornwall in a good position to build upon."