In USA I've been to 192 airports, and 82 international airports. Will add two new intl airports next month.
Alabama
MOB
BFM
Alaska
ANC
LHD
AMR
Arizona
IFP
DVT
MSC
FLG
GCW
GCN
AZA
PHX
TUS
YUM
AVQ
RYN
IGM
MZJ
SDL
FHU
DMA
40G
P03
California
LAX
SFO
SAN
OAK
ONT
LGB
NZY
CRQ
SMO
VCV
WJF
MHV
Colorado
DIA
COS
Connecticut
BDL
GON
Delaware
ILG
DOV
GED
Florida
JAX
EVB
FLL
FXE
FPR
MIA
MLB
TPA
TIX
ECP
PFN
MCO
NPA
PIE
OPF
PNS
TMB
HWO
Georgia
ATL
llinois
ORD
Indiana
IIND
Kansas
FOE
Kentucky
CVG
Louisiana
BTR
Maine
BGR
OLD
Maryland
BWI
HGR
ADW
SBY
ESN
FDK
OXB
GAI
CGS
CBE
W29
W00
NHK
EDG
Massachusetts
BOS
Michigan
DTW
YIP
APN
PTK
FNT
OSC
Minnesota
MSP
Mississippi
JAN
GWO
Missouri
MKC
MCI
STJ
Nebraska
LNK
OFF
Nevada
LAS
VGT
BVU
HND
LSV
New Jersey
EWR
ACY
LDJ
28N
New Mexico
ROW
New York
ALB
ISP
JFK
LGA
IAG
PBG
ROC
BUF
RME
FOK
North Carolina
AVL
CLT
ECG
FAY
GSO
RDU
ISO
MEB
GSB
North Dakota
FAR
GFK
RDR
Ohio
CLE
YNG
CMH
LCK
Oklahoma
OKC
TUL
RVS
TIK
Oregon
PDX
PRZ
RDM
MDJ
Pennsylvania
PHL
PNE
MUI
NXX
MDT
RDG
CKZ
Rhode Island
PVD
WST
South Carolina
GSP
Tennessee
BNA
MEM
Texas
IAH
HOU
GLS
EFD
Utah
SLC
HIF
Vermont
BTV
Virginia
IAD
DCA
RIC
ORF
PHF
SHD
VBW
FRR
JYO
HEF
HWY
CJR
OMH
NGU
NTU
LFI
OKV
OFP
JGG
LUA
Washington
SEA
BFI
PAE
RNT
S43
West Virginia
MGW
MRB
Wisconsin
MKE
UES
ETB
International (outside of US)
Austria
Vienna Intl VIE
Bahrain
Bahrain Intl BAH
Belgium
Brussels Zaventem Airport BRU
Canada
Comox Valley Airport YQQ
Campbell River Airport YBL
Courtenay Airpark CAH3
Nanaimo Airport YCD
Nanaimo Harbour Water Aerodrome ZNA
Toronto Pearson Intl Airport YYZ
Toronto Downsview Airport YZD
Toronto Billy Bishop City Airport YTZ
John C. Munro Hamilton Intl Airport YHM
Vancouver Intl Airport YVR
Montreal Pierre Elliott Trudeau Intl YUL
Ottawa Macdonald–Cartier Intl Airport YOW
Ottawa Rockcliffe Airport YRO
Qualicum Beach Airport XQU
CFB Trenton Ontario YTR
Fort St. John Airport YXJ
Kingston Norman Rogers Airport YGK
Peterborough Airport YPQ
China
Beijing Capital Intl PEK
Colombia
Barranquilla Ernesto Cortissoz Intl BAQ
Costa Rica
San Jose Juan Santamaría Intl SJO
Czech Republic
Václav Havel Airport Prague PRG
Denmark
Copenhagen Airport Kastrup CPH
Egypt
Cairo Intl Airport CAI
England
London Heathrow LHR
France
Paris Charles de Gaulle Airport CDG
Germany
Frankfurt Intl Airport FRA
Frankfurt–Hahn Airport HHN
Munich Intl Airport Franz Josef Strauß MUC
Ramstein Air Base RMS
Hong Kong
Hong Kong International HKG
Hungary
Budapest Ferihegy Intl Airport BUD
Iceland
Keflavik Intl Airport KEF
Indonesia
Jakarta Soekarno–Hatta Intl Airport CGK
Bali Denpasar Intl Airport DPS
Italy
Milan Malpensa Airport MXP
Japan
Tokyo Narita Intl NRT
Jordan
Amman Queen Alia Intl AMM
Amman Marka Airport ADJ
Kuwait
Kuwait Intl Airport KWI
Netherlands
Amsterdam Schiphol Intl AMS
Nicaragua
Managua Augusto C. Sandino Intl MGA
Oman
Muscat Intl Airport MCT
Panama
Panama Tocumen Intl PTY
Panama Albrook Gelabert Airport PAC
Peru
Lima Jorge Chávez Intl Airport LIM
Poland
Krakow Balice KRK
Warsaw Okecie WAW
Rzeszow Jasionka RZE
Minsk Mazowiecki Air Base EPMM
Mielec Airport EPML
Deblin Military Air Base EPDE
Lublin Airport LUZ
Katowice Wojciech Korfanty Airport KTW
Katowice Muchowiec Airport EPKM
Bielsko Biala Airport EPBA
Portugal
Faro Airport FAO
Puerto Rico
San Juan Luis Muñoz Marín Intl SJU
Qatar
Doha Hamad Intl Airport DOH
Saudi Arabia
Riyadh King Khalid Intl Airport RUH
Riyadh Air Base OERY
Dammam King Fahd Intl Airport DMM
Singapore
Singapore Changi Airport SIN
Slovakia
Bratislava Airport BTS
Presov Air Base POV
South Korea
Seoul Incheon Intl Airport ICN
Spain
Madrid–Barajas Airport MAD
Tenerife South–Reina Sofía Airport TFS
Tenerife North Los Rodeos Airport TFN
Switzerland
Zurich Airport ZRH
Thailand
Bangkok Suvarnabhumi Airport BKK
Bangkok Don Mueang Intl DMK
Phuket Intl HKT
Turkey
Istanbul Ataturk Intl Airport IST + New IST
Ukraine
Kiev Boryspil Intl Airport KBP
Kiev Zhuliany Intl Airport IEV
United Arab Emirates
Dubai Intl Airport DBX
Sharjah Intl Airport SHJ
Vietnam
Ho Chi Minh Intl Airport SGN