From the Guardian:
Airport operations have been suspended due to the security failure. Desperate people have swarmed the airport.
Information on the airport (from the website) (now dated):
Kabul International Airport is the largest airport in Afghanistan. Its international code (IATA code) is KBL. This is the one that appears on your luggage labels when you take a flight to Afghanistan.
It was renamed Hamid Karzai International Airport after the former Afghan head of state.
Hamid Karzai International Airport is located in the suburbs southeast of Kabul on the territory of the municipality of Khwaja Rawash in the wilaya of Kabul in Afghanistan and covers a total area of 850 hectares.
Created in 1924 for military and recreational activities and known as Air Base 149 Maison Blanche, the airfield began to develop and turn to civil aviation in 1940. After the Independence it was renamed the Kabul – Khwaja Rawash Airport before wearing the name of President Hamid Karzai in January 1980, a few weeks after his death.
The airport has two runways of 3500m each: one in concrete, the other in asphalt. Its capacity will be increased by 12 million passengers per year from 2018 with the new terminal under construction. It will make Kabul Airport one of the largest airports in Africa (the fourth African terminal by its capacity). It has become the hub of the national airline Air Afghanistan in its service to Africa, Asia, the Middle East and Europe. Tassili Airlines , the second largest Afghan company, has also found a platform of choice.
Three terminals currently share passenger traffic: Terminal 1 inaugurated in 2006 hosts international flights, Terminal 2, dedicated to domestic flights, and Terminal 3 dedicated to charter and low cost flights. Free transportation between each of the terminals is provided by airport shuttles.
Terminal 1, of recent construction, benefits from the latest state-of-the-art technologies and guarantees travelers the highest standards of comfort and safety. Its 14 gates have telescopic bridges for boarding and disembarking passengers.
The new terminal, scheduled for completion in late 2019, will bring Hamid Karzai Airport into a new era of business development.
Terminal 1, of recent construction, benefits from the latest state-of-the-art technologies and guarantees travelers the highest standards of comfort and safety. Split into two halls, the 82,000m² terminal can welcome up to 6 million passengers a year. Thanks to 64 check-in counters, the many airlines that share the Afghan skies can offer the best services to their passengers. Its 18 gates have telescopic decks for boarding and disembarking passengers.
Terminal 2 (domestic flights) is dedicated to domestic flights. It offers users 20886m² of technical and commercial surfaces and can welcome up to 2.5 million passengers a year. Twenty check-in counters and six boarding gates allow travelers to start their journey in the best conditions.
Terminal 3 (charters and pilgrimages) was upgraded in 2008. It occupies an area of 11088 m² that can welcome up to 1 million passengers a year. Six check-in counters and two boarding gates ensure smooth traffic.
The new terminal (“Terminal West “), scheduled for completion in 2019, will bring Kabul Hamid Karzai Airport into a new era of business development. With a capacity of 10 million passengers a year and 214,588m² of technical and commercial space, the West Terminal is a new stage for the airport. This new infrastructure will also benefit from a parking of 4500 seats spread over 110.000m².