Apieinthesky

If you tell us where you're going and where you're from, maybe we can give you more specific suggestions. And also a little more specific on size may help.

Otherwise, my advice would just be to research all the flight options you have, look up the seats, seat width, pitch, etc.

To horseymen: First class may not be significantly more than coach, and if it's a person that flies once a year, you definitely don't need to be wealthy to purchase an extra seat or an F seat. But thank you for your positive comments about Spirit...that's nice to know and something you definitely don't hear about much on this board.