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https://www.google.com/finance?q=NYSE%3AUAL&sq=United%20Air%20Lines%2C%20Inc.&sp=1&ei=HCfwWKDLG4qRmAHjzYO4CQ https://www.google.com/finance?q=NYSE%3AUAL&sq=Unit

by pcurve 10y ago

https://www.google.com/finance?q=NYSE%3AUAL&sq=United%20Air%20Lines%2C%20Inc.&sp=1&ei=HCfwWKDLG4qRmAHjzYO4CQ https://www.google.com/finance?q=NYSE%3AUAL&sq=United%20Air%... comparison of 4 airlines 5 past trading days. Delta is actually doing much worse.