Holiday (and other) charters were once more common for mainstream national carriers, and expected to be done in marginal night/weekend hours; European scheduled flights were then mainly focused around business travel, with reduced weekend work. I believe part of the justification for BEA's purchase of Vanguards in the late 1950s was that they could be used for overnight holiday flights. The independent carriers moving into this sector from their 1950s concentration on military charters came as a bit of a surprise.
The very first jet holiday flight was a nightstopping aircraft from Heathrow, not BEA but an Air France Caravelle, which in 1958 stopped overnight from Paris, and on Sundays did not restart until lunchtime, so Harry Chandler's Travel Club of Upminster chartered it for an early Sunday round trip to Ajaccio in Corsica.