What is the spelling of my name in the ticket, the same as in my passport, ä/ae/a?
Names must be spelled as shown on your passport. It is enough to insert one first name.
Due to the booking system that Finnair, among many other airlines, uses, in the ticket 'ä' is shown as 'a' and 'ö' is shown as 'o'. There is no need to change them.