Spirit Airways Sells the Big Front Seat onboard its aircraft, which is similar for the seats in US domestic first class, but there's no other change in company or features for customers seated in that part. Using a Heading Elite membership, it is possible to entry the cheapest premium class seats https://businessflightshop.co.uk/blog/avail-the-cheapest-business-class-flights-summer-travel-deals-to-the-east-coast-for-dog-vacation/