Mueller was of the onion that they were the wrong aircraft for IAG and the then CEO of IAG Willie Walsh agreed. Aer Lingus continues to rely almost entirely on the A330 for its core North American long-haul routes, with IAG tying future fleet investments and widebody renewals to the airline meeting strict profit margins. From 2026, Aer Lingus has activated supply agreements with producers like Gevo and Aemetis, handling 50 pc of its fuel needs out of Los Angeles and San Francisco. Aer Lingus reported near-record profits yet faces demands from IAG for higher margins, prompting plans to cut 500 jobs and drop several North American routes. Aer Lingus has faced persistent pressure under International Airlines Group ownership, with the carrier required to meet strict 12-15 pc operating profit margins while operating an ageing long-haul fleet.