USA:
HNL, OGG, LIH, ITO, KOA, SEA, SFO, SJC, OAK, RNO, LAS, LAX, SLC, DEN, DFW, TUL, ATL, ORD, LGA, JFK, PIT, CLE, IAD
Europe:
LHR, LGW, CDG, BRU, AMS, BCN, ZRH, GVA, EDI, PRG, MUC, FRA, VIE, MXP, MLA, WAW, SVO, TBS
Middle East / Africa:
ASB, MCT, DXB, SJH, BAH, DOH, KWI, SAH, KRT, IST, TZX, ADA, AMM, TUN, EBB
Asia:
COK, NRT, ICN, SEL, FNJ, HKG, PEK, PVG, SIN, TPE, BKK, PNH, REP, LPQ, VTE, MLE, CMB, MRU, SEZ, PRI
Pacific:
AKL, WLG, PMR, SYD, MEL, PER
Maybe others
Just the ones I’ve visited by air, either going to, leaving from, or passing through:
Big:
Seattle-Tacoma
Sacramento, CA
Minneapolis St. Paul
Honolulu, HI
Hilo, HI
Kona, HI
Kahului, HI
Lihue, HI
Los Angeles International
McCarran (Las Vegas, NV)
Sky Harbor (Phoenix, AZ)
Bozeman, MT
Stapleton (Denver, CO)
Denver Internaional Airport
Salt Lake City, UT
Dallas-Ft. Worth
Hartsfield (Atlanta, GA)
O’Hare (Chicago, IL)
Cincinnati, OH
Dayton, OH
Harrisburg, PA
Richmond, VA
Washington Dulles International
John F. Kennedy International (New York City, NY)
LaGuardia Airport (New York City, NY
Newark Liberty International
Logan Airport (Boston, MA)
Halifax, NS
Munich (Germany)
Schipol (Netherlands)
Nuremberg (Germany)
Heathrow (London, UK)
Frankfurt (Germany)
Puerto Rico
Medium:
Grenada
Thief River Falls, MN
Cedar City, Utah
Small:
Renton Municipal (Renton, WA)
Fleming Field (St. Paul, MN)
Mena, AR
Stevens point Municipal (Stevens Point, WI)
John F. Kennedy Memorial (Ashland, WI)
Mankato Regional (Mankato, MN)
Redwood Falls Municipal (Redwood Falls, MN)
Worthington Municipal (Worthington, MN)
Emmetsburg Municipal (Emmetsburg, IA)
Albert Lea Municipal (Albert Lea, MN)
Airlake Airport (Minneapolis, MN)
Flying Cloud Airport (Minneapolis, MN)
Crystal Airport (Minneapolis, MN)
Anoka County-Blaine Airport (Minneapolis, MN)
St. Paul Downtown
Lake Elmo Airport (St. Paul, MN)
La Crosse Municipal
Tacoma Narrows Airport
Olympia Regional Airport
Bremerton National Airport
Spanaway Airport (Spanaway, WA)
Boeing Field (Seattle, WA)
Sanderson Field (Shelton, WA)
Snohomish County Airport (Everett, WA)
Wipline Airport (Inver Grove Heights, MN; private, grass)
Clover Park Technical College (Lakewood, WA; airport doesn’t exist anymore)
Grand Forks, ND
Gray Army Airfield (Joint Base Lewis-McChord, Tacoma, WA)
Ocean Shores Municipal (Ocean Shores, WA)
That’s 66, and I know I’m forgetting a few. Plus, there are three places I’ve been to in seaplanes, but aren’t technically airports.
Found two more, hidden in the deep recesses of memory: Athens (Greece) and Brussels (Belgium).
I forgot to add Athens as well… and I was there two days ago. :rolleyes: :smack:
About 18 as a passenger and something like 42 as a pilot.
Sweden
Stockholm Arlanda
Stockholm Bromma
Nyköping Skavsta
Jönköping Axamo
Umeå
Luleå
Gothenburgh Landvetter
Malmö Sturup
Växjö
Finland
Vanda
Denmark
Copenhagen Kastrup
UK
London Heathrow
London Stansted
London Gatwick
Luton
Glasgow
Prestwick
Edinburgh
Germany
Düsseldorff
Berlin Tegel
Cologne/Bonn
Weeze
Netherlands
Schiphol
France
Beauvais
Spain
Palma de Mallorca
Portugal
Lisbon
Italy
Milan Malpensa
Rome Fiumiccine
Tunisia
Monastir Habib Bourgiba international
Cyprus
Larnaca
US
New York JFK
Chicago O’Hare
Columbus OH (don’t remember the name)
33
Boston, Manchester NH, Connecticut, LaGuardia, Philadelphia, Pittsburgh, Buffalo, Charlotte, Cincinatti, Lexington KY, West Palm FL- think that’s it for the states
London, Milan Italy, Amsterdam, Nice FR, Germany (I was little and don’t know which one)
Those are the ones I remember. Only 16. I feel so travel-challenged now. Thanks. 
Amsterdam
Eindhoven
Rotterdam
Dusseldorf
Dusseldorf Weese
Frankfurt
Zurich
Vienna
Munich Paris CDG
London Heathrow
London Stansted
London Luton
Brussels Charleroi
Barcelona
Madrid
Valencia
Alicante
Porto
Riga
Prague
Budapest
Zagreb
Dubrovnik
Ljubljana
Tunis (or somewhere else in Tunisia)
Chennai (Madras)
Madurai
Honolulu
San Francisco
LAX
Montreal
Boston
Newark
JFK
Dulles
Minneapolis/St Paul
and I’m sure I’m forgetting some…
2
That many times.
I forgot Munich.
BOS
BWI
Dulles
Reagan
Charlotte
Memphis
JAX
Newark
JFK
Detroit
Philly
O’Hare
Providence
Wichita
Denver
ALB
SFO
Spokane
I know I’m forgetting some, but wow! For a guy that never flies, that’s a lot!
Albany International
JFK
Montreal International (it wasn’t named for Trudeau back then).
O’Hare (layover)
Orlando
Miami-Dade
Hartsfield (Atlanta)
San Francisco International
San Diego
Baltimore-Washington International
Reagan National Airport (DC)
Honolulu International
Kahului Airport (Maui, Hawaii)
Toronto
Pittsburgh (layover)
Philadelphia (layover)
McCarren International (Las Vegas)
Heathrow (London)
Charles de Gaulle (Paris)
Mattituck Airport (Mattituck NY)
Westerly Airport (Westerly, RI)
Block Island Airport
As far as I can remember, 52:
ADL (Adelaide)
ATL (Atlanta)
BEO (Belmont)
BNE (Brisbane)
BNK (Ballina)
BOS (Boston Logan)
BWI (Baltimore-Washington)
CBR (Canberra)
CMH (Port Columbus)
DCA (Washingtgon National)
DEN (Denver)
DFW (Dallas/Fort Worth)
DPO (Devonport)
DTW (Detroit)
GEX (Geelong)
HBO (Hobart)
HKG (Hong Kong Kai Tak) – now closed
HNL (Honolulu) – unscheduled stop, did not leave the plane
IAD (washington Dulles)
IAH (Houston)
IND (Indianapolis)
KIX (Osaka Kansai)
LAX (Los Angeles)
LGA (New Yofrk LaGuardia)
LHR (London Heathrow)
MCO (Orlando)
MEB (Melbourne Essendon)
MEL (Melbourne Tullamarine)
MSP (Minneapolis-St. Paul)
MSY (New Orleans)
NTL (Newcastle)
OOL (Coolangatta)
ORD (Chicago O’Hare)
PEK (Beijing)
PHL (Philadelphia)
PHX (Phoenix)
PIT (Pittsburgh)
RDU (Raleigh-Durham)
SAN (San Diego)
SAT (San Antonio)
SEA (Seattle-Tacoma)
SFO (San Francisco)
SNA (John Wayne)
SYD (Sydney)
TSV (Townsville)
WGA (Wagga Wagga)
YEG (Edmonton)
YQB (Québec City)
YUL (Montréal-Trudeau)
YVR (Vancouver)
YYY (Victoria)
YYZ (Toronto)
Don’t always remember their names, so sometimes I’ll just give the city
USA
Boston (Logan)
NYC JFK
NYC La Guardia
Newark
Rochester, NY
Atlanta
Tampa/St Pete, FL
Orlando, FL
Washington DC Dulles
Washington DC National (ETA: I think it’s “Reagan” now?)
St Louis
Cincinnati/Northern Kentucky International Airport
Providence, RI
Portland, OR
San Fransisco, CA
Canada
Toronto
British Isles (incl. Ireland)
Dublin
Edinburgh
London Heathrow
London Luton
London Stanstead
London Gatwick
Mainland Europe
Paris Orly
Paris CDG
Brussels
Amsterdam
Frankfurt
Berlin
Munich
Oslo
Stockholm
Copenhagen
Rome Fiumicino
Vienna
Warsaw (Chopin)
Asia
Seoul
Tel Aviv (Ben Gurion) – of course 
Sorry, two more:
ALB (Albany)
ONT (Ontario) – in California, not in Canada
… And two more for me as well (in Europe)
Geneva
Zurich
I’m pretty sure that’s really it!
The last time I flew was 1970! Except for taking people to or from the Nashville International, my other visits back in olden times were in:
Montgomery (yes, there’s an airport there)
Atlanta (you can’t get out of The South without it)
Chicago (destination city all three times I’ve flown!)
Oh for God’s sake. I can’t believe I forgot Rochester. I lived there! My parents lived there for 30 years. That was the first airport I’ve flown from, and I visited there every year for about 15 years.
Also Syracuse, though I don’t think I was ever actually inside of the airport. I once took a flight from Rochester to Boston, but we had a brief stop in Syracuse.
I also left off Atlanta.
Easily over 100 different airports, many multiple times; I’ve been to PHL at least 80 times and DFW at least 40. I fly both state-side and internationally for work approximately 25 times per year. Any list I come up with, however, would be incomplete. Who keeps records of all of that? Certainly not me.