The following airlines serve Paris Charles de Gaulle CDG Airport.
Airline Terminal
Adria Airways, JP Terminal 1
Aegean Airlines, A3 Terminal 1
Aer Lingus, EI Terminal 1
Aeroflot, SU Terminal 2
Aeromexico, AM Terminal 2
Afriqiyah Airways, 8U Terminal 1
Aigle Azur, ZI Terminal 2
Aigle Azur, ZI South Terminal
Air Algerie, AH South Terminal
Air Baltic, BT Terminal 1
Air Berlin, AB South Terminal
Air Canada, AC Terminal 2
Air China International, CA Terminal 1
Air Europa Lineas Aereas, UX West Terminal
Air Europa Lineas Aereas, UX Terminal 2
Air France, AF Terminal 2
Air France, AF West Terminal
Air India, AI Terminal 2
Air Malta, KM West Terminal
Air Mauritius, MK Terminal 2
Air Moldova, 9U Terminal 1
Air Nostrum, YW Terminal 2
Air Tahiti Nui, TN Terminal 2
Air Transat, TS Terminal 3
Airlinair, A5 South Terminal
Alitalia, AZ Terminal 2
Alitalia Express, XM Terminal 2
American Airlines, AA Terminal 2
ANA, NH Terminal 1
Arkia - Israeli Airlines, IZ Terminal 1
Armavia, U8 Terminal 1
Asiana Airlines, OZ Terminal 1
Atlas Blue, 8A Terminal 3
Atlas Blue, 8A South Terminal
Austral, AU Terminal 2
Austrian, OS Terminal 2
Belavia, B2 Terminal 2
Blue Line, BLE Terminal 3
Bmibaby, WW Terminal 1
British Airways, BA Terminal 1
British Airways, BA Terminal 2
British Airways, BA South Terminal
Brussels Airlines, SN Terminal 1
Bulgaria Air, FB Terminal 2
Burkina Airlines, 3B* South Terminal
Cathay Pacific Airways, CX Terminal 2
CCM, XK West Terminal
Clickair, AIS West Terminal
Continental Airlines, CO Terminal 2
Croatia Airlines, OU Terminal 1
Cyprus Airways, CY Terminal 1
Czech Airlines, OK Terminal 2
Delta Air Lines, DL Terminal 2
EasyJet, U2 Terminal 2
EasyJet, U2 South Terminal
Easyjet Switzerland, DS South Terminal
Egyptair, MS Terminal 1
El Al, LY Terminal 2
Emirates, EK Terminal 2
Etihad Airways, EY Terminal 2
Eurofly, GJ Terminal 3
Eva Airways Cargo, 1G Terminal 1
Finnair, AY Terminal 2
FlyBE, BE Terminal 1
Georgian Airways, A9 Terminal 2
Gulf Air, GF Terminal 1
Gulf Air, GF Terminal 2
Hex'Air, UD South Terminal
HI Hamburg International, 4R Terminal 3
Iberia, IB West Terminal
Icelandair, FI Terminal 1
InterSky, 3L Terminal 3
Israir Airlines, 6H Terminal 1
JAL, JL Terminal 2
Jat Airways, JU Terminal 2
Jet2.Com, LS Terminal 3
Jet4You, JFU South Terminal
KD Avia, KD Terminal 1
KLM, KL Terminal 2
KLM, KL West Terminal
Korean Air Lines, KE Terminal 2
LOT - Polish Airlines, LO Terminal 1
Lufthansa, LH Terminal 1
Luxair, LG Terminal 2
Malaysia Airline, MH Terminal 1
Malev-Hungarian Airlines, MA Terminal 2
Middle East Airlines, ME Terminal 2
MyAir.Com, 8I South Terminal
Northwest Airlines, NW Terminal 2
Norwegian Air Shuttle, DY South Terminal
Olympic Airlines, OA Terminal 1
Pakistan International Airlines, PK Terminal 1
Qantas Airways, QF Terminal 2
Qatar Airways, QR Terminal 1
Regional Compagnie Aerienne Europeene, YS West Terminal
Royal Air Maroc, AT South Terminal
Royal Air Maroc, AT Terminal 1
Royal Jordanian, RJ Terminal 2
SATA International, S4 Terminal 1
Saudia, SV Terminal 1
Saudia, SV Terminal 2
Saudia, SV Terminal 3
Singapore Airlines, SQ Terminal 1
Skyeurope Airlines, NE South Terminal
Sun D'Or, ERO Terminal 2
Sunexpress, XQ Terminal 3
SWISS, LX Terminal 2
TAP-Air Portugal, TP Terminal 1
TAP-Air Portugal, TP West Terminal
Tarom, RO Terminal 2
Thai Airways International, TG Terminal 1
Transavia Airlines, HV South Terminal
Transportes Aereos Belem Amazonia, BEL Terminal 1
Tunis Air, TU Terminal 3
Tunis Air, TU South Terminal
Turkish Airlines, TK Terminal 1
Twinjet Aircraft Sales, TWJ West Terminal
Ukraine International, PS Terminal 2
United Airlines, UA Terminal 1
US Airways, US Terminal 1
Vueling Airlines, VY Terminal 1

More details on airlines from the Paris Charles de Gaulle Airport website.