51.   Most of the other big airlines quick joined the formation.

52.   On a typical flight, a big airline may charge dozens of different fares.

53.   Now, however, the big airlines seem to be mending their ways.

54.   Of course, the latest gains will only help the performance of the mutual funds holding the biggest concentrations of the big airline stocks.

55.   Orbitz, a new online travel agent backed by a group of big airlines, is doing even better.

56.   Other big airlines have pointedly refrained from grab-bags.

57.   Other big airlines post earnings in the next few days.

58.   Patterson said the bankruptcy filings are important because in the long run airlines like his provide the competition that holds down the prices that the big airlines can charge.

59.   Rather than enhancing competition, the big airlines say such guidelines could have a chilling effect on opening new routes and on existing price competition.

60.   Several big airlines favor user fees, but low-fare carriers say it would force them to raise prices.