One little snippet of trivia: the first transatlantic flight from Newcastle upon Tyne was an Aer Lingus 707 (or it might have been a 720) chartered by a Catholic church choir for a trip to somewhere in the US. Another British Catholic organisation for whom Aer Lingus was the charter carrier of choice was Celtic Football Club. Whether Aer Lingus gave concessionary rates to such groups (the Irish state was quite well bound up with the Catholic Church at that time) or whether it was just a matter of the groups themselves choosing to fly on a 'Catholic' airline, I wouldn't know.