Next Wednesday my family and I will be flying to New Mexico, on Southwest Airlines (don't know if naming the airline is important to the question, but I thought I'd through that out there just-in-case), to visit family and to have a nice vacation. I noticed on the news this morning that Boston might get a snow storm next Wednesday. Still a bit early for them to tell 100% if it's going to be a hit or miss, but I'm starting to get a bit nervous, I'd hate to miss this trip due to snow. Because of this, I checked the long range forecast for Chicago and have discovered that Chicago's due to get snow on Wednesday as well (things could change between now and then, but I'm going with they're getting snow). Now I know that Chicago deals with snow all the time, but at what point does a snow storm in Chicago start making airlines late or, worse still, cancel flights? We're due to fly out of Boston on Wednesday at 4:50 pm and into Chicago 6:40 pm for a quick 40 minute connection. Depending on when the snow's due to start in Boston I may not have to worry about my flight being delayed, which should make it easier to get my connecting flight in Chicago. I don't think I'll have anything to worry about, but I thought I'd ask everyone here to get some ideas as to what to expect.