BA, if it comes down to it, they will. Also, a packed plane does not mean high yields. DEN is one of thier better performing LGW routes, without a doubt, but when compared to JFK, SFO, LAX, MIA, BOS, etc., it's not a big money maker. The fact is a combination with DTW/LHR could make it even more profitable for BA. I am sure yields are up on CLT-BWI-LHR since the combination, just check the average fares and how they have skyrocketed. Yes, less people will be willing to travel one-stop, but since your combining two cities, it does not really matter. I stand by what I said. If things continue to suffer for BA, they will combine LHR/LGW routes, and DEN-DTW-LHR was just a random example of many possibilities. And, like I said, while I am sure BA makes money to DEN and fills up the plane, during BA's recent giant fare sale, DEN was the most heavily discounted trans-Atlantic.