Many frequent flyer programs allow you to transfer rewards between alliance airlines and / or redeem your rewards for flights on other airlines in the alliance. (cardrates.com)
You should definitely be aware of what airline alliance the airline belongs to before getting its card. (uponarriving.com)
This award chart is only applicable if you are redeeming for a round trip ticket with at least two one world alliance airlines. (takeoffwithmiles.com)