According to Official Guinness Records,
The most aircraft to take off from a single airfield in one hour is 106 in an event organised by Jim Greenshields (UK) at Dunkeswell Airfield, Devon, UK, on 8 August 2015. This record-breaking attempt was organised to raise money for the Make-A-Wish Foundation.
For a complete list of 2015 records, please visit 2015 Guinness Records in United Kingdom.