Great question - MPH to SDF just means Boracay Godofredo P. Ramos Airport to Louisville Intl Airport. Now you’ll know what these unique codes when you look for flights! This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Lexington Blue Grass Airport (LEX), Paducah Barkley Regional Airport (PAH), Owensboro Daviess County Airport (OWB).