last summer i booked flights to europe on usair using lp miles......i needed to connect in phl fm nyc, however there was only one mainline flight per day at the time.......tried to book onto usair express however latinpass told me that flights on any of usair's commuter partners were ineligible for reward travel, therefore i had a 12 hour layover in phl as the mainline flight left in th early a.m......so i don;t think you will be able to use any usair commuter flights on a lp reward unless they have changed the rules...