Iberia has announced plans to launch new services to destinations in Asia, Africa and the Americas over the next two years.
The Oneworld carrier is considering cities including Tokyo, Doha, Johannesburg and Toronto.
Following "profitability studies", the Spanish airline will reveal the new routes later this year and "hopes" to begin operating them in 2016 and 2017.
Other destinations under consideration include Guadalajara, Managua, San Juan de Puerto Rico, Brasilia and Asuncion.
Luis Gallego, Iberia's executive chairman, said: "This announcement is a confirmation of our commitment to global growth, though always under the premise that sustained profitability is the key criteria."
IAG also said it plans to convert five A330-200 and eight A350-900 options into firm orders in order to expand and renew its long-haul fleet.
Earlier this year, IAG ordered 16 new long-haul aircraft - eight A330-200s to be delivered in 2015 and 2016, and eight A350-900s, due to arrive between 2018 and 2020.
During 2013 and 2014, eight A330-300 aircraft were added to Iberia's fleet.
Iberia launched a four-times weekly Madrid-Edinburgh service in March and is due to begin a Madrid-Manchester service in September (see news, December 2014).