In the current Wikipedia "
Busiest U.S. airports by total commercial aircraft enplanements" list of 31 "Large hubs", I have never flown through these ten:
# 14,
EWR
# 18,
FLL
# 19,
LGA
# 20,
DTW
# 21,
PHL
# 22,
SLC
# 27,
TPA
# 28,
BNA
# 29,
AUS
# 31,
MDW