Iberia Airlines is the flag carrier airline of Spain. It was founded on June 28, 1927, and is headquartered in Madrid. Iberia Airlines operates an extensive network of domestic and international flights, serving over 125 destinations in 48 countries. It is a member of the oneworld alliance, which allows passengers to earn and redeem frequent flyer miles on other member airlines. Iberia Airlines is known for its quality service, modern fleet, and commitment to sustainability.