He said the airline has recruited more staff, has more aircraft available and improved the way it communicates with customers to help them in the "unlikely event" things don’t go to plan.
"As the UK’s number-one holiday company we want our customers to know they can trust in Tui this summer," he added.
His comments come after the carrier announced it has recruited "hundreds" more staff in airports, contact centres and in the operations centre as well as "thousands" of travel experts and holiday reps in stores, hotels, on the phone or via live chat.