Originally Posted by
MSPeconomist
Does the extra seat count as an additional adult traveling (see the language in the OP)?
I wonder whether the "adult" part is enforced. Suppose one just books a child as an adult? Does the system check the birthdate? In fact, can one have an adult and a child fare on the same PNR?
No idea if these will be applied to EXST bookings, but if someone wants to give it a try, here's the details --
https://pro.delta.com/content/agency...-comfort-.html
In terms of domestic and ex-US fares, I don't believe DL actually has any child fares or discounts (other than under 2 without a seat). They generally only seem to be found from origins outside the US like the EU.