By far my fav is Jet Blue, I have flown them prob 30 times and NEVER had a bad experience. Southwest is pretty good as well. USair, Spirit are trash IMO. Foreign I have good experiences with Ryan air, Virgin, Singapore, have not had a memorable bad experience flying with a foreign carrier. Jet Blue is extremely customer friendly, while the big carriers don't seem to give a chit. Spirit is so azz backwards its a wonder how they are still iin biz.