Originally Posted by
Adam Smith
Glad to hear people are still finding this useful. To the extent that's the case, please feel free to post here if you have new mileage data, i.e. routes you've flown where the spreadsheet currently is relying on the haversine formula rather than the official AC distance.
I have a bunch of new ones and will upload a new copy of the spreadsheet soon that contains them, but can always incorporate more.
I have at least of few of these but will probably wait for the next update and then figure out some kind of diff against that to make it easier to incorporate.
Any other significant mods I made to the excellent original spreadsheets were mostly around correctly calculating Altitude/Aeroplan miles based on fare class which should not impact the route-specific mileage table.