we fly ALOT and i usually choose united first for domestic flights if possible-generally the experience has been good although once i had luggage left in denver when flying from el paso to colorado springs-the irony being that the flights were on gates literally right next to one another-Really? My personal experience is that united and frontier are generally the best for domestic travel-one notable bad experience on frontier but that actually falls on one gate agent who refused to rebook us when we were delayed in colorado springs and it impacted the whole day. American on the other hand-ugh dont get me going and i HAVE to fly them fairly often
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