A few details.
The first QANTAS Lancastrian departed the Old Dart for delivery to Australia on the 23 April 1945, and the second the following day.
The first airline flights departed on 2 June 1945, respectively from Hurn and Sydney, and took 3 days for the journey. Services began at one per week, latter lifting to two, and finally three in 1946.
The Lancastrians were relegated to mail/freight on the route when the Constellations were introduced in Dec 1947.