Can I modify or cancel a seat reservation?

Once a seat type has been booked and confirmed, it can still be modified afterwards via 'myTUI’:

If you choose a seat of the same price as the seat originally reserved, you don’t pay any surcharge.
In case of a more expensive seat, you have to pay the difference in price.
If you want to book a cheaper seat, this can only be done by telephone at TUI fly +32(0)2 717 86 61. For more information on availability go to the “Contact” section on our website.

In the event of cancellation, you cannot claim a refund of the seat reservation fees.