缺點： flights all on Delta - about one a week for 3 months straight - and yet when Delta cancelled my flight and re-booked they did not give me any upgrade or loyalty as I saw it - I had paid extra for Delta Comfort and they told me the flight they re-booked me on simply did not have any comfort available. However, I was not the one canceling the flight and re-booking - that is their problem and after so much loyalty for years I feel like I should have gotten some kind of upgrade for free...If I have to cancel - I have to pay fees - but if they cancel - I lose ...despite being a very loyal SkyMiles customer. I am quite disillusioned with Delta now and will have to look around to see what other airlines there are now - and my entire family - and what kind of loyalty they give to their loyal customers. It needs to be a two-way
優點： Was upgraded to Comfort Plus after they had no seat for me on the plane
缺點： We booked with Virgin however flew with Delta and we were not alerted to this. We booked with Virgin for a reason. They also did not have seats for me when I went to check in on both flights and I had to negotiate seats before boarding. Very disappointing.