Both WorldTraveler & UKRidge make valid points. From my perspective any aircraft UAL may choose to add to its fleet in the future (assuming successful exit from BK and its route structure intact) will most assuredly come down to how much each respective aircraft adds to the bottom line in terms of cost savings and operational capability.
I don't think this is a discussion of Boeing vs. Airbus, or at least it shouldn't be. I've flown both brands (777 currently) and will be the first to acknowledge the merits of each design. Enough said on that. Lets look at a few observations.
First, it's a given that the Int'l market will continue to be the place where UAL and the rest of the big legacy carriers will continue to dominate. As their operational costs come down (read labor, fuel efficiency savings, lease rates, etc.) this will only increase over their international competitors as well as increasing the barriers to market entry by some upstart LCC's on the horizon. Simply said, the legacy carriers will all choose to play to their strengths. With the advent of newer aircraft technologies and their inherent capabilities, what had been the perceived conventional path to entering/developing markets is rapidly changing. (This also holds true for LCC's eyeing the Int'l market.)
Second, new aircraft models on the horizon and their capabilities (777-200ER, 7E7) will make strong arguements when these Int'l carriers design their strategic 5-10 year plans. The questions that should be asked are what is the short-term need for such capabilities (7,000-8,500 nm range), the cost associated with such a purchase, as well as will the market on such city pairs support such an investment. For UAL, with its focus on Asia and China in particular, such aircraft loom large in their strategic plans and make much sense.
I think within the next 12 months we'll see at least a few of the major US Int'l carriers vie for delivery postions of the 7E7 for a number of reasons, not the least of which is the need to get their delivery positions locked in sooner rather than later. Both aircraft makers know this is happening and basically it'll come down to competition as to what direction the various carriers go.
There may be something to rumors of a sweetheart deal with Airbus on aircraft (both wide and narrowbody) should UAL elect to go in that direction. But the very same arguement can be made for Boeing, which definitely does not want to see UAL swing to Airbus for its widebodies (Boeing has all but conceded UAL narrowbody sales to Airbus).
That being the case, I think UAL will be doing more than just rethinking existing markets and city pairs. In either case (Airbus or Boeing), UAL, and the other US legacy carriers as well, will be looking at entirely new routes that such aircraft will make economically feasible.
To be sure, many will make the case that some of this "economical feasibility" will be at the expense of current labor agreements, work rules, etc. I'm not going to argue that it hasn't, but rather, that you play the hand your dealt. That is a subject for another thread entirely.
Just my thoughts.
Cheers,
Z B)