United Continental Holdings reported a $448 million net loss for the first quarter,

compared with a $213 million net loss for the same period last year. The loss includes $162 million in special costs "primarily" related to United's integration of Continental Airlines, according to the carrier. United's average first-quarter one-way fare increased nearly 7 percent to $271.76. Chief revenue officer Jim Compton during the carrier's earnings call said corporate revenues increased 10 percent year over year, with average corporate yield, a representation of average fare per mile, up 4 percent.