I'm from San Antonio, too. A great place to live, but airfare bargains are rare.
We are flying to London for an Oceania cruise in June. I was checking airfares back in November . . . actually trying to get there on miles . . . and noticed a drop in price from the usual $950 to about $750. Grabbed a pair of tickets. Glad I did because the price went back up the next day.
Travelocity.com has a Fare Alert feature. You can register up to five or six itineraries and they will email you when the price goes up or down by more than $25. That way, maybe you can catch a better price.