I'll be travelling from Las Vegas to Abu Dhabi this end of July. I booked the ticket via American airlines website. There is a connection via Los Angeles, and the itinerary mentions that the flight from LAX to Abu Dhabi is American Airlines but operated by Etihad airways. My question was that do I need to re-check my baggage at LAX or does AA check my baggage from Las Vegas to Abu Dhabi?
Your bag will be through-checked from Las Vegas to Abu Dhabi without needing to be claimed and re-checked.
AA and Etihad work together closely on travel between the USA and the Gulf.