Amadeus has confirmed it has reached a new multi-year extension agreement with United Airlines into 2013 which guarantees their full range of content will be available to the airline.

Under the terms of the deal, the travel technology partner will distribute all of the carrier’s economy Plus seating.

“We appreciate our strong working relationship with the United team and are proud to help them sell Economy Plus seats through the travel agency community,” said Scott Alvis, senior vice president, client management, for Amadeus’ Airline Group in the Americas region.

“We look forward to continuing to work closely with United as they evolve their offer and to enable them to sell future products and services via the agency channel according to their strategy.”

The extended content agreement upgrades the existing arrangement between the two companies.

Amadeus travel agents will continue to be able to access and book the complete range of fares, schedules, and inventory for both United and Continental.

United’s Economy Plus seating will become available to US-based Amadeus travel agencies beginning mid-year 2012.

“Amadeus is working hand-in-hand with major carriers worldwide to provide full content on fares and availability along with the introduction of ancillary products for efficient and transparent shopping,” Alvis added.

Additional terms of the agreement are proprietary and therefore not disclosed.