National and international traffic is very well balanced. Of the 35,695,480 passengers to have passed through Madrid-Barajas in 2003, 17,587,328 are from domestic flights and 17,780,374 from international flights.

The main airlines from each country operate in the airport to offer passengers the possibility of choosing the best among them all to adapt to their flight requirements.

The top domestic destination is Barcelona, due to the large amount of passengers to use the Madrid-Barcelona connection.