You are looking at way less than 50 million a day... I think london heathrow uses around 800k gallons in a day for example (3 million liters)... they have a whole pipeline system that delivers it. The Thames - Mersey Pipeline System supplies the West London system which is dedicated to the onward transportation of aviation fuel to London's main airports. It comprises a large storage terminal and pump station at Buncefield, supplying Heathrow airport and a further section linking Longford to the Walton Gatwick system.

I dunno why you keep massively over-estimating the amount of consumption... you keep calculating as if every plane holds 60k gallons and then uses it all on every trip.... and I dunno where you even get that figure... even a 747 doesn't hold that much.

You are looking at way less than 50 million a day... I think london heathrow uses around 800k gallons in a day for example (3 million liters)... they have a whole pipeline system that delivers it.

Thats one of the largest airports....