Dhahran, Dammam and Khobar are three different cities in a tri-city area on the Arabian Gulf. I believe the combined total population is above 1 million. Dhahran and Khobar are very close to one another but Dammam is 10-15 kilometers away. The causeway to Bahrain, one of the longest in the world, starts in Khobar.
Prior to 1997, the main civilian airport for the tri-city area was Dhahran International Airport (IATA code was DHA
), which is in Dhahran and close to Saudi Aramco (largest oil company in the world). At the moment, it is used sporadically by Saudia VIP aircraft. I doubt the US has a presence there as all American forces have left Saudi Arabia in the late 90s.
However, in 1997, a brand new international airport was opened 35 kilometers north of Dammam, called King Fahd International Airport (IATA code is DMM
). This airport is so far away from Khobar and Dhahran (50-60 minutes away by car) that most people in those two cities simply drive to Bahrain (BAH
) to catch a flight from there.
It would be interesting to note that prior to 1997, Dhahran International Airport was a lot busier, with such carriers as British Airways, KLM, Air France, Austrian Airlines, Lufthansa, Swissair, Turkish Airlines, Garuda Indonesia, Cathay Pacific, Singapore Airlines, all operating there at one point or another. Sadly, at present, the far away airport north of Dammam (DMM
) is served by KLM and Lufthansa only from the above list.
Let me know if you need more information.