Although 'only' ferrying planes across as some have it, it was no less a dangerous task than flying against attacking enemies.

"The Women's Auxiliary Air Force (WAAF), whose members were referred to as WAAFs /ˈwæfs/, was the female auxiliary of the Royal Air Force during World War II, established in 1939. At its peak strength, in 1943, WAAF numbers exceeded 180,000, with over 2,000 women enlisting per week."
en.wikipedia.org/wiki/Women%27s_Auxiliary_Air_Force

"The female Top Guns of World War II: Inside the RAF squadron who rubbed shoulders with the men - and flew their Spitfires
. The Air Transport Auxiliary employed 168 female pilots during the Second World War
. Duties included ferrying planes from factories to military airfields and piloting air ambulances
. Among the planes transported were Spitfire and Hurricane fighters and the huge Lancaster bomber
. Although the majority of pilots were British, they also came from the US, Australia and Poland among others

They were the unsung heroes of World War II but now, as the 70th anniversary of VJ Day approaches, the UK's female pilots have been remembered in an incredible collection of images.

The pictures, taken from the Getty Images archives, show the women of the Air Transport Auxiliary who were responsible for ferrying new fighter and bomber planes to their bases, as well as flying transport aircraft and some air ambulances.

Dubbed the 'Attagirls' by their male comrades, the 168-strong squadron was based at RAF Hamble in Hampshire and RAF Cosford in Shropshire, and were trained to fly 38 types of aircraft.

...
In total, 15 female pilots were killed while flying for ATA, but for many of the women who made it through the War years, flying would prove to be a lifelong passion.
..."
www.dailymail.co.uk/femail/article-3194754/The-female-Guns-World-War-II-Inside-RAF-s-woman-ferry-squadron-rubbed-shoulders-men-flew-Spitfires.html