Henri Coandă International Airport (Romanian: Aeroportul Internaţional Henri Coandă) (IATA: OTP, ICAO: LROP) is Romania's busiest international airport, located 16.5 km (10.3 mi) northwest of the city of Bucharest. It is one of the two airports serving the Romanian capital city, along with Băneasa airport. The airport is located in Otopeni, north of Bucharest. It is named after Romanian flight pioneer Henri Coandă, the builder of the world's first jet powered aircraft. Until May 2004, its official name was Bucharest Otopeni International Airport (Romanian: Aeroportul Internaţional Bucureşti Otopeni), and locally it is still quite frequently referred to by its former name.

During World War II, the airport in Otopeni was used as an airbase by the German air force. Up to 1965, it was restricted for military use, and was one of the major bases of the Romanian Air Force, with a runway of 1200m. Before 1965, Băneasa Airport was the only airport that Bucharest used for commercial flights. However, with the growth of air traffic, a new commercial airport was constructed in the settlement of Otopeni, where the military air base used to be. The existing runway was modernised, extended up to 3500 m, making it even longer than that of Paris' Orly Airport at that time (1965). Also, a new passenger terminal was constructed for domestic and international flights.

In the late 1960s, when President Nixon of the United States visited Romania, a new VIP lounge was created, and on 13 April 1970, the passenger terminal was updated to have a capacity of 1,200,000 passengers per year. The airport slowly became more and more used by airlines, with a growing number of passengers, and in 1986, it entered a new phase of development. A second 3500-metre runway was constructed, as well as related taxiways. The airport lighting system was improved and the capacity was increased to 35-40 airport movements per hour.

In 1992, Otopeni Airport became a regular member of Airports Council International (ACI). In 1997 a new international departures lounge with a capacity of 1000-1200 passengers per hour was opened, as well as five modern airbridges. In 2000, Phase II of the development initiative continued, and the International Arrivals Terminal was improved.

Terminals
The airport's terminal facilities consist of a single terminal, divided into three halls (occasionally considered to be separate terminals). These three sections are the International Departures Hall, the International Arrivals Hall, and the Domestic Flights Hall. A passage with several shops connects the halls. The airport has five jetways, all within the International Departures Hall. Additionally, another 9 gates are present at the airport that currently lack jetways. An extension to the actual terminal, with 8 extra jetways, is presently under construction (completion: 2010). The last major expansion of the airport occurred in 1997, when the Domestic hall was built, and the International Departures Hall was expanded. The current terminal was built around the original Otopeni airport terminal.

Bucharest OTP is an important airport in Eastern Europe and the main hub of the Romanian national airline, TAROM. Low fare airlines generally operate from Bucharest's Băneasa Airport, 10 km to the south, rather than OTP.

The International Departure area hosts a variety of shops, cafes, lounges, Internet cafes and many more. There is also a chapel at the first level of the International Departures Hall. The facilities inside the airport are easily accessible for the persons with disabilities. Airlines distribute Romanian- and English-language newspapers at the departure gates.

Ancillary services
The main handling agent in the airport is Globeground, the second being Menzies. The catering services are provided by Alpha Rocas.