I recently had the chance to compare American Airlines First Class and Business Class on a domestic flight, and I was curious about the seat difference. First Class seats felt noticeably wider and more spacious, with extra legroom that made the flight so much more comfortable. I actually called 844-734-0813 before my trip to confirm my seat selection and even adjust it slightly—super easy and stress-free. The agent walked me through the seating options and made sure I got a prime spot. While Business Class is still comfortable, First Class definitely gives you that extra room and a more relaxed experience, especially on longer flights. If you’re debating which cabin to choose, calling directly is the fastest way to book, modify, or even upgrade your seat without any hassle.