Checking for flights on oneworld.com instead on aa?
 

When I check for flights on AA.com for redeeming miles, it only shows AA and British airways flights.

Through oneworld.com it shows all oneworld members.

If I find a flight on oneworld.com that I like, can I call AA and tell them I want to redeem tat flight using my AAdvantage miles?

Sure, you can call AA and tell them whatever you like.

However OW.com does not have an award space search, so you're just taking shots in the dark as to whether the flight will have availability.

Also, your statement about what carriers are shown on the AA.com award search is incorrect. While not exhaustive, the site shows more partners than just BA.

AA.com checks more than AA and BA-operated flights. To book beyond the list below you'll need to call AA. From a hyperlink on the award search page.

Booking Awards on Other Airline Participants on aa.com

Let aa.com be your source for award redemption flights throughout the world. In addition to flights on American Airlines and American Eagle, you can book award travel with the following carriers and their affiliate airlines, if eligible, on aa.com:


oneworld carriers other AAdvantage partners
airberlin Alaska Airlines
British Airways Hawaiian Airlines
Finnair
Qantas
Royal Jordanian Airlines
US Airways

Additional award redemption opportunities on all AAdvantage participating airlines can be found by contacting AAdvantage Reservations at 1-800-882-8880 or visit our Worldwide Reservations Phone Numbers page. Service charges may apply.