Air Nostrum (Air Nostrum Líneas Aéreas del Mediterráneo S.A.) is a Spanish regional airline.

Founded in 1994, Air Nostrum is headquartered in Valencia, Spain, and operates mainly from Valencia airport and other regional airports in Spain.

It is a key regional airline in Spain, operating flights on behalf of its larger partner Iberia under the Iberia Regional brand. The company mainly serves destinations throughout Spain and Europe, providing essential connections between major cities and more remote regions.

The fleet consists mainly of aircraft from the Bombardier CRJ family, notably the CRJ1000 and CRJ200 models, as well as ATR aircraft, such as the ATR 72-600, for regional flights. These aircraft are well suited to regional routes, offering comfort and efficiency while meeting the highest safety standards.

The airline stands out for its commitment to customer service quality, punctuality and regional connectivity in Spain.

As a strategic partner of Iberia, it plays a key role in the Spanish air network, facilitating passenger travel and contributing to the economic development of the regions it serves.