Originally Posted by
VegasGambler
IMO the big 3 + AS are basically the same for the inflight experience for domestic travel. I have never noticed a huge difference between AA, UA, or AS and I seriously doubt that DL is any different. There are some minor differences that people on FT like to blow out of proportion but there's nothing significant.
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Having a substantial amount of DL flights under my belt over the last decade in addition to AA,AS and UA. I can validate that your sentiment and observations are accurate.