Greek Islands and Canaries always a struggle for fuel, depending on wind with the 737-200. Pratt and Whitney JT9D if I remember. Re-fuelling stop quite common on BHX and MAN routes from those destinations
Wonder if most were day flights as I have in my flight log (as SLF) HER-GLA on 31 August 1984, non stop on G-AVRO, one of Britannia's original four from 1968! Full flight but block times were 0500L off chocks, and 0735L on chocks, block time of 4h35. Cooler ambient temps aiding endurance, presumably.
Much later, FWIW, 12 Oct 1991, MCO-GLA non stop on leased Boeing 757 G-BTEJ. I have flight time of 18:54L dep, 07:16arr, 7h20min, guess not that unusual for a 757. Apologies for thread drift.
OTEA