Heading from Atlanta to Fairbanks in July with NCL BOGO flights. Atl - Cinn-Minn-Fairbanks all on Delta. I was able to upgrade on the Delta app to 1st class.
On Delta for the return from Seattle - Atl was putting me home Sunday night way too late for work on Monday. I was unable to reschedule this flight directly with Delta. I booked with a different airline for much earlier.