The best way to add baggage and seats is during your holiday booking journey on our website, if they’re available to book.
If you’ve already booked and want to add them, you still can! You'll need to log on to the TUI Flight Extras website and pay them directly. We've dropped a link below to take you there but you might find it helpful to read these instructions first. And, just so you know, any flight extras you book directly with TUI won’t show on your Thomas Cook invoice / confirmation.