Originally Posted by AntonS

I assume it's a codeshare AA flight operated by Qatar?
It's OK just keep in mind few nits if you purchase from AA:

• All voluntary changes will have to be done with AA. With some code codeshares (like BA) ticket changes require to call.
• Advance seat assignments may need to be handled by QR, you will get QR booking code on AA website
• If ticket is non-refundable and you cancel, you will get flight credit on AA
• On day of departure QR will be your primary contact and will handle IRROS
• Making voluntary changes during the flight, i.e. you are in DOHA and want to take earlier flight etc are virtually impossible on codeshare ticket
• If you are collecting AA miles, they will probably post based on ticket price. I remember last time non-codeshare QR in J were distance based and posted significant J bonus , so you will probably lose on miles here