It will soon be easier for U.S. and Mexican carriers to add new routes between the nations.
The United States and Mexico said they will end current restrictions that cap the number of passenger airlines that can fly on any one route between the nations. The agreement -- announced on Friday -- will become effective Jan. 1, 2016, the U.S. State Department said in a statement.
"The new agreement … will benefit U.S. and Mexican passenger and cargo airlines, airports, travelers, and businesses by allowing significantly increased market access for passenger and cargo airlines to fly between any city in Mexico and any city in the United States," the State Department said. "Cargo airlines, for the first time, will have expanded opportunities to provide service to new destinations that were not available under the current agreement."
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That current agreement places significant restrictions on the number of carriers permitted to fly U.S.-Mexico routes. Enacted in 2005, that agreement generally allows only two U.S. airlines and two Mexican airlines to fly on a single route between U.S. and Mexican airports. Some routes have different restriction details, but the agreement effectively caps the number of airlines that can begin service between U.S.-Mexico city pairs.
"The new agreement will remove the numerical limitations on the number of airlines that may provide passengers service in all U.S.-Mexico city pairs," the U.S. Department of Transportation said in its own statement about the agreement.
"As a result, some city-pair markets might see the entrance of new carriers for the first time in many years, and airlines can consider offering new service in destinations that they could have never considered previously," the DOT adds.

 http://www.usatoday.com/story/todayinthesky/2014/11/25/us-mexico-to-end-limits-on-transborder-airline-routes/70073840/