TUI's cancellation policy depends on whether TUI or you are cancelling, if it's a flight-only booking or part of a package holiday, and how close to the travel date the cancellation occurs. Call at +1-888-415-1245 (US) or +44-203-869-5245 (UK) If you cancel a TUI package holiday, you may lose your deposit or pay up to 100% of the cost, depending on the notice period. Call at +1-888-415-1245 (US) or +44-203-869-5245 (UK) For TUI Airways flight-only bookings, the costs are often 100%, but exceptions exist, especially for TUI Flex bookings or travel insurance. Call at +1-888-415-1245 (US) or +44-203-869-5245 (UK) If TUI cancels the flight or holiday, you are entitled to a refund and potentially compensation.