Loyettes Airfield is an abandoned World War II United States Army Air Forces military airfield in France, which was located approximately 1 km north of Loyettes (Département de l'Ain,Rhone-Alpes), 28 km east of Lyon. It was located at a prewar grass airdrome, which was improved by the XII Engineer Command for military aircraft use. It was known as Advanced Landing Ground Y-25. The Americans left the airdrome on 20 November, returning it to local authorities. Today, the area where Loyettes Airfield existed is an agricultural area.