Below you'll find the most commonly used airport codes, per a list that I picked up during my DFW Ambassador tour today. Delimeter is a "," (designed in Excel 97): CODE,AIRPORT,CODE,AIRPORT,CODE,AIRPORT ABZ,ABERDEEN,HAJ,HANOVER,OSL,OSLO ACE,ARRECIFE,HAM,HAMBURG,PBM,PARAMARIBO ADB,IZMIR,HEL,HELSINKI,PFO,PAPHOS AGP,MALAGA,HER,HERAKLION,PHL,PHILADELPHIA ALC,ALICANTE,HOG,HOLGUIN,PHX,PHOENIX AMS,AMSTERDAM,HOU,HOUSTON,PIK,PRESTWICK ANC,ANCHORAGE,HRG,HURGHADA,PMI,PALMA ATH,ATHENS,IAD,WASHINGTON-DULLES INTERNATIONAL AIRPORT,POP,PUERTO PLATA ATL,ATLANTA,IAH,HOUSTON INTERCONTINENTAL,PRG,PRAGUE AUA,ARUBA,IBZ,IBIZA,PSA,PISA BCN,BARCELONA,INN,INNSBRUCK,PUJ,PUNTA CANA BDR,BERMUDA,IOM,ISLE OF MAN,PVR,PUERTO VALLARTA BFS,BELFAST INTERNATIONAL,IST,ISTANBUL,RDU,RALEIGH/DURHAM BGI,BARBADOS,JER,JERSEY,REK,REKYJAVIK BGO,BERGEN,JFK,NEW YORK - JOHN F KENNEDY,REU,REUS BGR,BANGOR-USA,KEF,REYKJAVIK-KEFLAVIK,RHO,RHODES BHD,BLEFAST CITY,KGS,KOS,RSW,FORT MYERS BHX,BIRMINGHAM,LAS,LAS VEGAS,SAN,SAN DIEGO BJV,BODRUM,LAX,LOS ANGELES,SDQ,SANTO DOMINGO BOJ,BOURGAS (BULGARIA),LCA,LARNACA,SEA,SEATTLE BOS,BOSTON,LEH,LE HAVRE,SEZ,MAHE ISLAND-SEYCHELLES BRS,BRISTOL,LGW,LONDON GATWICK,SFB,ORLANDO-SANFORD BRU,BRUSSELS,LHR,LONDON HEATHROW,SFO,SAN FRANCISCO BUD,BUDAPEST,LIN,MILAN-LINATE,SJO,SAN JOSE CAX,CARLISLE,LIS,LISBON,SJU,SAN JUAN CCS,CARACAS,LOU,LOUISVILLE,SNN,SHANNON CDG,PARIS CHARLES DE GAULE,LPA,LAS PALMAS,SOU,SOUTHAMPTON CHI,CHICAGO,LTN,LONDON LUTON,STL,ST LOUIS CIA,ROME CIAMPINO,LUX,LUXEMBOURG,STN,LONDON STANSTED CFU CORFU,,LYS,LYON,STO,STOCKHOLM CLT,CHARLOTTE,MAD,MADRID,STR,STUTTGART CMB,COLOMBO,MAH,MAHON,SVG,STAVANGER CPH,COPENHAGEN,MAN,MANCHESTER,SVO,MOSCOW-SHEREMETYEVO CUN,CANCUN,MBJ,MONTEGO BAY,SXF,BERLIN-SCHONEFELD DVG,CINCINNATI,MCO,ORLANDO,TFS,TENERIFE CWL,CARDIFF,MEM,MEMPHIS,THF,BERLINJ-TEMPELHOF DEN,DENVER,MEX,MEXICO CITY,TLV,TEL AVIV DFW,DALLAS/FORT WORTH,MIA,MIAMI,TPA,TAMPA DLM,DALAMAN,MIL,MILAN,TRN,TURIN DTW,DETROIT,MIR,MONASTIR,TXL,BERLIN-TEGEL DUB,DUBLIN,MLA,MALTA,VAR,BARNA (BULGARIA) DUS,DUSSELDORF,MME,TEESSIDE,VCE,VENICE EMA,EAST MIDLANDS,MOW,MOSCOW,VIE,VIENNA EWR,NEW YORK - NEWARK,MRU,MAURITIUS,VRA,VARADERO FAO,FARO,MSP,MINNEAPOLIS/ST PAUL,VRN,VERONA FBU,OSLO (FORNEBU AIRPORT),MSY,NEW ORLEANS,WAW,WARSAW FCO,ROME - LEONARDO DE VINCI,MUC,MUNICH,WIC,WICK FLL,FORT LAUDERDALE,MXP,MILAN MALPENSA,YEG,EDMONTON FNC,FUNCHAL,NCE,NICE,YHZ,HALIFAX FRA,FRANKFURT,NCL,NEWCASTLE,YMQ,MONTREAL FUE,FUERTEVENTURA,NYC,NEW YORK,YMX,MONTREAL PEARSON GLA,GLASGOW,OAK,OAKLAND,YOW,OTTAWA GRO,GERONA,ORD,CHICAGO-OHARE INTERNATIONAL,YUL,MONTREAL DORVAL GVA,GENEVA,ORY,PARIS ORLY,YVR,VANCOUVER ,,,,YWG,WINNIPEG ,,,,YYC,CALGARY ,,,,YYT,ST JOHNS ,,,,YYZ,TORONTO ,,,,ZRH,ZURICH ,,,,ZTH,ZAKYNTHOS