A new runway opening this fall at Chicago's O'Hare International Airport should add about 50 flights a day to the chronically congested facility. But a second new runway scheduled to open in 2011 is bogged down in lawsuits with neighbors and negotiations with cash-strapped airlines. Officials say that runway -- part of the three-phase, $8 billion O'Hare modernization plan -- would cut flight delays by more than one-third.

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