I don't know how the OP is planning to get to wherever, so I was wondering if flying was really an option. All commercial flights have pressurized cabins, but I believe that pressurization is above 4,000 feet. One study of 8 flights in Airbus A380 aircraft found a median cabin pressure altitude of 6,128 feet (1,868 m), and 65 flights in Boeing 747-400 aircraft found a median cabin pressure altitude of 5,159 feet (1,572 m).
I don't know if the infant's condition constraints to any time above 4000 feet or if a few hours would be ok. If it's anytime, then I think the OP should drive/take a train to VT.