Spirit Airways Sells the large Front Seat onboard its aircraft, which has similarities to your seats in US domestic first class, but there's no other distinction in assistance or features for customers seated in that part. Business class is often available on intercontinental flights and, with the exception of flat-mattress https://businessflightshop.co.uk/blog/things-to-know-when-booking-tickets-for-first-class-flights-to-bali/