Thomsonfly limited held a united kingdom civil aviation authority type a operating licence permitting it to carry passengers cargo and mail on aircraft with 20 or more seats. You need to provide advance passenger information api before you go on holiday if you re travelling with tui airways. I need to add my api to make sure me and my fiancée are let through the border in the us yet to do this i have to complete the select my seats part of checking in on the thomson flight extras website.