You should now give the age of passengers under 18 when creating an offer request

When searching for flights for a passenger who is under 18, you should now specify their age instead of a type. For passengers over 18, you can continue using "age": "adult" as before.

Different airlines have different definitions of who is an "adult", "infant" and "child" which can have a big impact on pricing. Some even have extra categories (for example "young adults" on British Airways, who pay lower taxes).

For some inspiration on how to handle this in your UI, check out Skyscanner: