July, Aug. 2002: Two bridges in Central China collapse, killing a combined 19 people. Sept. 2001: The Queen Isabella Causeway in Texas collapses after a tow boat captain loses control of a string of barges and currents drive them into a bridge support.
The average flying time for a direct flight from Bemidji, MN to Chicago is 1 hour 36 minutes; Most direct flights leave around 9:36 CST
The universal consensus seems to be that airfares tend to be lowest for flights that depart on Tuesdays and Wednesdays. That's what George Hobica of Airfarewatchdog says, along with CheapAir. Some sources, including Fodor's, add Thursday, and others, including Smarter Travel's Josh Roberts and FareCompare, add Saturday.