Lafont refused to accept the Armistice with Germany. With five other servicemen, including René Mouchotte and Charles Guérin, he escaped from Oran to join the Forces Aériennes Françaises Libres. They escaped by flying a twin-engine Caudron Goélandtransport aircraft, surviving a takeoff with sabotaged propellors locked in coarse pitch, to Gibraltar, navigating with the aid of a school atlas. The group joined the Forces Aériennes Françaises Libres in June 1940. They arrived in Britain in mid-July. Lafont was one of eleven French pilots posted to RAF St. Athan in late July. He moved to No. 1 School of Army Co-operation at Old Sarum on 29 July and then went to Odiham on 10 August where he flew 15 hours on Tiger Moths and Hectors. He was posted to 6 OTU, Sutton Bridge on the 19 August, converting to Hurricanes and joined No. 245 Squadron at Aldergrove on 11 September. On 18 September, Lafont was attached to No. 615 Squadron RAF at Prestwick and moved south with 615 to Northolt on 9 October, participating in the latter stages of the Battle of Britain flying Hurricanes. He claimed Bf.109s "probably destroyed" on 26 February 1941 and on 15 March. He was himself most probably shot down on 29 October flying Hurricane Mk.I V7383. Taking of at 12.00 hours, he crashed in attempting a forced landing between trees near Teston at 12.40 with a damaged engine and a glycol leak. An eyewitness of his shooting down was René Mouchotte: "Attacked by Messerschmitts, higher up than we were; we did not see them, the sun is so dazzling. They dropped out of the sky like three stones and climbed back without giving us time to say ʽOuf!ʼ In the scrap that followed I saw two of ours shot down. One of them was my only French comrade in the squadron. Luckily he was not hit and landed in a field. The enemy has a terrible advantage in superiority of altitude." In May 1941, he was posted to 59 OTU as an instructor for French pilots coming from 10 FTS at Ternhill. There Lafont trained more than 60 French pilots. He later joined the Groupe de Chasse n°1 "Alsace", which was formed in the Middle East and took part convoy patrols during the campaign in Libya. Wounded on 27 June 1942, he returned to action in January 1943, flying fighter operations over the Western Front. He finished the war flying a Spitfire Mk. IX, and had completed 230 operational missions. He left the air force in 1966 with the rank of colonel.
