Noting that Delta is only receiving Airbus aircraft in 2025, CEO Ed Bastian told investors "we will not be paying tariffs on any aircraft deliveries we take.”

Although Brazilian operator Azul cut a dozen cities in March, it remains bullish on its proposed combination with GOL to quickly build scale.

As newly imposed tariffs by the Trump administration roil world markets, airlines are bracing for a wave of uncertainty as the busy summer season approaches.