Exhibit 99.1 CONTACT: Scott B. Flaherty Chief Financial Officer NEWS RELEASE (561) 349-9989 Record Results by Willis Lease Finance Corporation with First Quarter Pre-tax Income of $29.9 million COCONUT CREEK, FL — May 2, 2024 — Willis Lease Finance Corporation (NASDAQ: WLFC) (“WLFC”) today reported record first quarter total revenues of$119.1 million and record quarterly pre-tax income of $29.9 million. For the three months ended March 31, 2024, aggregate, core lease rent and maintenance reserve revenues w ...