List of Airlines at (IST) airport

Aegean Airlines (Tel +30 210 626 1000)
Aeroflot (Tel +90 212 243 4725)
Afriqiyah Airways (Tel +218 918 800 122)
Air Albania (Tel +355 4224 6000)
Air Algérie (Tel +90 213 2198 6363)
Air Arabia (Tel +971 6558 0000)
Air Arabia Maroc (Tel +90 212 241 5184)
Air Astana (Tel +7 727 258 4135/36)
AirBaltic
Air Cairo
AirConnect
Air France (Tel +90 212 375 5777)
Air Montenegro (Tel +382 2065 3074)
Air Serbia (Tel +381 113 112 123)
Ariana Afghan Airlines (Tel +93 777 071 333)
Arkia
Armenian Airlines
Asiana Airlines
ATA Airlines (Tel +98 214 855)
Azerbaijan Airlines (Tel +90 216 348 0404)
Azimuth (Tel +7 863 226 0005)
Belavia (Tel +375 172 202 555)
Berniq Airways
British Airways (Tel +44 203 250 0145)
China Southern Airlines
Crown Airlines
EasyJet
EgyptAir (Tel +90 212 231 1126)
El Al
Emirates (Tel +90 212 315 4545)
Ethiopian Airlines (Tel +90 542 724 1399)
Etihad Airways (Tel +90 212 973 5250)
Flyadeal
Fly Arystan
Fly Baghdad (Tel +90 212 238 2127)
Flydubai (Tel +90 850 241 1110)
Fly Jordan (Tel +962 6567 0666)
FlyOne (Tel +373 2210 0003)
Fly Oya
Freebird Airlines
Ghadames Air
Gulf Air (Tel +90 212 465 0758)
IndiGo
IrAero
Iran Air (Tel +90 214 662 1888)
Iran Airtour (Tel +90 218 931 7000)
Iran Aseman Airlines (Tel +90 212 241 5746)
Iraqi Airways (Tel +90 212 375 5807)
Israir
Jazeera Airways (Tel +965 2205 4944)
Jordan Aviation (Tel +962 6550 1760)
Kam Air (Tel +93 799 974 422)
KLM (Tel +90 212 375 5776)
Korean Air
Kuwait Airways (Tel +90 850 811 8119)
Libyan Airlines (Tel +90 212 247 2344/45)
Libyan Wings (Tel +218 213 514 601)
LOT Polish Airlines (Tel +90 212 241 5749)
Lufthansa (Tel +90 212 375 5790)
Mahan Air (Tel +98 214 838 4838)
MedSky Airways
Meraj Airlines (Tel +98 216 1954)
MIAT Mongolian Airlines
Middle East Airlines (Tel +961 162 9999)
Nouvelair (Tel +216 7002 0920)
Oman Air (Tel +90 212 375 5955)
Pakistan International Airlines
PegasFly (Tel +7 495 478 4944)
Pegasus Airlines (Tel +90 888 228 1212)
Pobeda (Tel +7 809 505 4777)
Qanot Sharq
Qatar Airways (Tel +974 4022 6000)
Qeshm Air (Tel +98 763 5335 1617)
Red Wings Airlines
Royal Air Maroc (Tel +90 212 241 3263/64/65)
Royal Jordanian (Tel +962 6510 0000)
S7 Airlines
Salam Air
Saudia (Tel +90 850 455 1601)
SCAT Airlines (Tel +90 212 465 5676)
Sichuan Airlines
Singapore Airlines (Tel +90 212 463 1800)
Somon Air (Tel +992 446 404 040)
TAROM (Tel +4 213 160 220)
Transavia (Tel +90 216 588 5157)
Tunisair (Tel +90 212 241 7097)
Turkish Airlines
Turkmenistan Airlines
UR Airlines (Tel +8 800 770 0262)
Utair (Tel +7 800 234 0088)
Uzbekistan Airways (Tel +998 781 400 200)
Wizz Air

Many passengers do not know who to consult or make a claim to some doubts that arise before or after traveling, or any inconvenience that may occur. Listed below are topics that need to be consulted, coordinated or resolved directly with the airline.   Check in procedure   Documentation and visa required   Baggage weight limits, restricted and prohibited Items   Baggage and excess billing rates   Requirements for minors traveling alone or without parents   Special passengers needing prior coordination with the airline: people with disabilities, reduced mobility and pregnant women   Lost, delayed or damaged baggage reclaim   Possible flight's changes of date or cancellations   Confirmation of flight schedules (departures or arrivals)   Flight status report (for possible delays, cancellations, rescheduling)   In case your airline reschedules your flight, coordinate with the company for possible compensation, due to extra nights accomodation, food, flight connection lost, etc. Remember that it is always advisable to have a traveler's assistance insurance, in case the airline does not respond to any inconvenience that might happen (baggage lost or damaged, cancellation or flight delay, etc.)