Question: What is the airport code for abu dhabi?
Disambiguated questions and answers: question: What is the IATA airport code for Abu Dhabi International Airport?
What is the IACO  airport code for Abu Dhabi International Airport?
answer: AUH
OMAA
Natural Questions answer: IATA : AUH
ICAO : OMAA (from the Wikipedia article "Abu Dhabi International Airport")