I wanted to attempt to book a flight from the Washington DC area (IAD, DCA, BWI) to Missouri (MCI, STL). The flight is on a weekend in early April. So far, looking on the Avios website, almost nothing is available. Will I have more luck if I book in segments, such as DCA - CLT, CLT - MCI? The problem with that is it completely ruins the affordability of Avios. Not to mention, most of these open flights only have First class available. :/ Am I missing something crucial here? These seem close to impossible/pain in the butt to book. I'm ok with spending some time on them if I can make them work, just currently not having much luck.