<div><p>ATLANTA (Reuters) - U.S. carriers United Airlines and AirTran posted better-than-expected quarterly results on Wednesday, citing improving revenue trends aided in part by returning business travelers.</p><p>United parent UAL Corp <UAUA.O> posted a ...

<div id="subtitle">UAL sees business and premium travel improving, as 4Q loss narrows from a year earlier</div><div><p>United Airlines said business travel is improving, echoing comments from rivals Delta and American, and its fourth-quarter loss was much smaller ...

<div id="subtitle">Delta Air Lines posts $25M loss for fourth quarter, see signs of business travel pickup</div><div><p>Delta Air Lines Inc.'s corporate travel demand is picking up, its trans-Atlantic business has rebounded and it is holding its ...

<div id="subtitle">Southwest, Continental post fourth-quarter profits, boosting hopes for industry recovery</div><div><p>Southwest Airlines made money in the fourth quarter, which was expected, and so did Continental, which was not.</p><p>Both reports ...