Originally Posted by sdsearch

I use www.awardnexus.com (click "more signup options" under the green Purchase button to sign up for free as a FlyerTalk member) which can pull either BA and/or QF for OW award inventory (but uses a much simpler user interface that's the same no matter which airline's site it's searching behind the scenes). QF often produces results that BA doesn't, though you'd think theory they should have about the same results.

Ie, BA often has trouble showing inventory that exists, so it's far from the best way to check OW inventory.