Northwest Airlines won bankruptcy court approval Friday to buy 67 coveted landing and takeoff slots at Washington National Airport from Eastern Airlines, after boosting its bid to match that of United Airlines.

Northwest offered to pay $35.5 million for the slots, related facilities and five gates at National Airport, or $250,000 more than its earlier bid.Although United was the initial high bidder for the slots, the Department of Justice announced Thursday that it would seek to block acquisition of those assets by United of Chicago on antitrust grounds.