Airlines Flying out of the Chicago Airport System

Access Air (MDW)
Aer Lingus (ORD)
Aeroflot (ORD)
AeroMexico (ORD)
Air Canada (ORD)
Air China (ORD)
Air France (ORD)
Air India (ORD)
Air Jamaica (ORD)
AirTran Airways (MDW)
Air Ukraine (ORD)
Air Wisconsin - United Express (ORD)
Alitalia (ORD)
All Nippon (ORD)
America West (ORD & MDW)
American Airlines (ORD & MDW)
American Eagle (ORD)
American TransAir (ORD & MDW)
Atlantic Coast Airlines - United Express(ORD)
Austrian Air (ORD)
British Airways (ORD)
Britt Airways COA Express(MDW)
Canadian Airlines (ORD)
Cathay Pacific (ORD)
Chicago Express ATA Express(MDW)
China Eastern (ORD)
China Southern (ORD)
Continental Airlines (ORD & MDW)
Czech Airlines (ORD)
ComAir (MDW)
Delta Air Lines (ORD & MDW)
El Al Israel (ORD)
EVA Air Taiwan(ORD)
Frontier (MDW)
Great Lakes United Exprerss(ORD & CGX)
Iberia (ORD)
Japan Airlines (ORD)
KLM (ORD)
Korean Air (ORD)
Kuwait (ORD)
Legend Airlines (ORD)
LOT Polish (ORD)
Lufthansa (ORD)
Mesa Airlines (ORD)
Mexicana (ORD)
National Airline (MDW)
Northwest Airlines (ORD & MDW)
Ozark (MDW)
Pakistan International (ORD)
PanAm (GYY)
Pro Air (MDW)
Qantas (ORD)
Royal Jordanian (ORD)
Sabena Belgian (ORD)
SAS Scandinavian (ORD)
Singapore Airlines (ORD)
Southwest (MDW)
Spirit Airlines (ORD)
Sun Country (ORD)
Swissair (ORD)
Tarom Romanian (ORD)
Taesa (ORD)
TransMeridian (ORD)
Turkish Air (ORD)
TWA (ORD)
United Airlines (ORD)
US Airways (ORD)
Vanguard (MDW)
Virgin Atlantic (ORD)