Haven't found any prices for Trans Pacific but London- Oz was pretty eye watering
Qantas first flew the Kangaroo Route on 1 December 1947. A
Lockheed Constellation carried 29 passengers and 11 crew from Sydney to London with stops in Darwin, Singapore, Calcutta, Karachi, Cairo, and Tripoli (passengers stayed overnight in Singapore and Cairo). A return fare was £585 (equivalent to $40,100 in 2018), equivalent to 130 weeks average pay.
also this
https://stock.periscopefilm.com/5114...couver-canada/