Trying to figure out if a RT LGA-IAD tomorrow morning is worth it. Depends on (duh!) how many UA flites I've got coming up during Feb and March. (DO have a RT NYC-HNL in 1st, but this is beyond that)

Whether I use travelocity or UA website, most of the flites I get for planning future trips come up with codeshares with US. Is there any way, or any site, where I can 'shop' and only get UA operated flites to select from?

Tx