Don't forget to have DL check the alternate airlines: Alitalia, Czech, Singapore, plus Air France. Especially out of Chicago you might do well to get something on Singapore ORD-AMS. Also I think the connecting flights are included on Alitalia/Czech/Air France, and probably allow a stopover (and are probably in business, FWIW). If you do this, be creative on your connecting cities (i.e. ORD/MDW to CVG to PHL/EWR/BOS to CDG, or ORD to JFK to PHL, (etc etc) for example. SOmeone used their DL miles to fly on Czech (and said pretty good things about it) through Montreal, of all places (ORD/MDW to Cincinnati to Montreal to Prague)

JL