Ryanair CEO says book summer trips before fares soar, predicting French air traffic controllers more likely to cause flight chaos than fuel shortages

(Credit: Donato Fasano/Getty Images)

 If the U.S.-Israel war on Iran continues into the summer, then airlines will start running out of jet fuel and will be forced to trim flights, according to Ryanair CEO Michael O’Leary.

In an interview Thursday with the U.K.’s ITV News, he said carriers will be in an “unknown scenario” if the Strait of Hormuz stays closed for two to three more months, warning 5%-10% of flights in May, June, and July might have to be canceled.