Sorry travelers, as expected, United Airlines will require minimum stays on all flights starting in October. Gone are the halcyon days of jetting away for a business meeting after breakfast with time to spare before returning for dinner. Most United fares will now require a three-night or weekend stay, but it “will depend on the destinations involved, the price of the ticket and the length of the flight.” And, yes, you will still be charged $15 to check your first bag.