I just spent an hour on the phone with AA...mostly on hold because no one could explain the difference between "flexible" and "fully flexible" fares. And...for this particular flight. Main Cabin Fully Flexible is more expensive than Frist Class Flexible.

Do anyone know the difference?

On the website:

Main Cabin Fully Flexible

• Changes or refunds allowed
• Choose your seat at no charge on on American flights (fee may apply for preferred or Main Cabin Extra seats)
• Eligible for upgrades on American flights

Main Cabin Flexible

• Changes or refunds allowed
• Choose your seat at no charge on American flights (fee may apply for preferred or Main Cabin Extra seats)
• Eligible for upgrades on American flightsflig

First Flexible

• Changes or refunds allowed
• Our largest, most comfortable seat
• 2 free checked bags*
• AAdvantageŽ miles

*On planes with both Business and First, you get 1 extra checked bag or 2 if you're AAdvantage Executive PlatinumŽ or AAdvantage Platin