And hello to you Hansel Romeo Tellez, welcome to Flyertalk, welcome to the BA forum. It's good to see you here, and I hope that you will continue to be an active participant in this forum. Welcome on board.

Your general point about Online Travel Agencies is very good and indeed a point I have made myself. This is not the same as "real life" travel agents, if you had one of those on your side I'm quite sure a better outcome would have happened. If you hunt around and makes some telephone calls, it is often the case that you can get a similar price through direct purchase, or by invoking the various airlines' best price guarantees.

The issue with your USA flights is particularly maddening since if you had booked this on the AA website and then called up about this, typically the response is "oh dear, which flights would suit you best now?" and they would entertain pretty much any half reasonable suggestion.

Unfortunately BA are also quite capable of being inflexible here too, whereas if they contacted their oneworld alliance co-ordination team a good solution would come out of it. So add in an OTA, I fear there is nothing you can do at the moment, unless you perceive that regular contact will somehow beat them into submission. The rationale being that you booked not a service to / from DFW but too/from California. The actual changes both converge in this case, but it is not at all unusual, particularly on the AA side.

These sorts of changes are very normal and they won't understand the Dallas excursion, they could argue you should have booked your tickets differently for that. I'd also point out that a bit of late aircraft movement or adverse jet stream conditions could have a very similar impact even on the original schedule.

However: AA love changing their schedules, I mean really, really love it. So there is an excellent chance that they will do it again. You then have to problem of dealing with the OTA, but at least it will be the last time in your life that you have to deal with them.