Below are the current Gateway Airports...you can petition the company to get one added if it is not on the list below...sorry the list is not alphabetical (formatting error due to copy/paste restrictions, and I'm too tired to fix it!!)
ABQ
FAT
MDT
SAT
ANC
FLL
MDW
SAV
ATL
FSD
MEM
SDF
AUS
FWA
MFR
SEA
AVL
GEG
MGM
SFO
BDL
GJT
MHT
SGF
BHM
GNV
MIA
SHV
BIL
GRB
MKE
SLC
BNA
GRR
MRY
SMF
BOI
GSO
MSO
SRQ
BOS
GSP
MSP
STL
BTR
HLN
MSY
SYR
BUF
HNL
OAJ
TLH
BWI
HOU
OAK
TPA
CHA
IAD
OGG
TRI
CHS
IAH
OKC
TUL
CLE
ILM
OMA
TUS
CLT
IND
ONT
TVC
CMH
ISP
ORD
TYR
COS
JAN
ORF
TYS
CRP
JAX
PBI
VPS
CRW
JFK
PDX
CVG
JNU
PHL
DAB
KOA
PHX
DAY
LAN
PIT
DCA
LAS
PNS
DEN
LAX
PSP
DFW
LBB
PVD
DLH
LEX
RDM
DSM
LGA
RDU
DTW
LIH
RIC
EUG
LIT
RNO
EVV
MBS
RSW
EWR
MCI
SAC
FAI
MCO
SAN