More airspace opens up to flights between U.S. – Mexico Aug. 21

The United States and Mexico agreed to put into force a new air transportation agreement that is expected to boost travel and clear the way for any city to have direct airline service to the neighboring nation, the U.S. Transportation Department said on Monday.

It said the two countries exchanged diplomatic notes Friday to bring the agreement into effect after four years of talks. The final approval was announced by the White House during Mexican President Enrique Peña Nieto's visit the same day to U.S. President Barack Obama.

The agreement will allow "increased market access for . . .