My family of three is taking a years-in-the-planning dream trip to Europe departing June 19 to celebrate my daughter's graduation. I booked business saver tickets nearly a year ago. We go DSM to ORD to IAD to LON. We have a 1 hour connection in ORD and a 50 minute connection in IAD. (The connections were not anywhere near that close when I booked the tickets.) In looking at the flights, the one out of DSM is late more than half the time, an average of 70-90 min depending on the site I read. The one out of ORD is also late almost half the time. It seems likely we will not make our overseas flight connection and it is the last one out of the night (leaving at 9:55 pm) There are no saver tickets available on any combination of flights at that time from Des Moines to London on June 19. I have checked daily for about 2 months. We don't fly often and I don't know if I have any leverage. Is there any chance United will put us on different flights -- even if saver is not available -- so we have a better chance of making it to London the day we intend? I would welcome suggestions from those more experienced than I. Thank you!