Only 64% Full: Aer Lingus’ 10 Emptiest US Routes Revealed

The US plays a critical role in Aer Lingus’ network. Between December 2024 and November 2025, the carrier transported 2.8 million passengers to/from the country. Compared to the prior 12 months, traffic rose by 7%, nearly seven times faster than the overall Europe-US market. New routes from Dublin to Indianapolis and Nashville contributed.