“ IATA: TUF, ICAO: LFOT. France. Also known as Tours Loire Valley Airport, it is open to national and international flights. The airport has daily flights to London Stansted and non-regular flights to Lyon and Bastia. „
I used this airport regularly when I spent a year living in Tours as part of my French degree. I used to get the train to London, then the Stansted Express (train), then a cheap Ryanair flight from Stansted direct to Tours. The flight took just over an hour & rarely if ever cost more than £30 including all charges. A quick look on the Ryanair website shows me that they currently fly there on Saturdays & Tuesdays, & the cheapest option seems to cost £31.67 altogether.
Once you get to the airport, you'll find that it's very tiny & quite sweet. Most of it is in just one room with one shop & one or two check-in desks. There are helpful staff on the reception who will order you a taxi to get into Tours (the airport is about 5 miles from the city centre), though the best thing to do is to jump on the shuttle bus which costs 5 euros, although you have to be quick - don't hang around in the airport after collecting your luggage or the bus will go without you! (It is scheduled to depart 30 minutes after the flight arrives, but I always found it best not to wait around!) The journey takes 20 minutes & drops you off at the central train station. (For your return journey, the bus leaves the station for the airport 2 hours before the Ryanair flight is due to leave.)
Tours itself is a very pretty town & a place well-worth visiting. I particularly recommend the restaurants in Place Plumereau - a lovely atmosphere.