Originally Posted by
patrickATX
I agree. I just went and looked and there are no fares available LGA-MSP-TPA (only LGA-MSP and MSP-TPA as separate fares). There are nonstops LGA-TPA and there are one stops LGA-ATL/DTW-TPA. There might be other layover points available but I was not looking too hard, but MSP is not one of them. Also, the non-stop and the one-stop are different fares. you can't switch from the non-stop to the 1 stop with a SDC.
You can switch from a non stop to a 1 stop with SDC and the other way arond. I've done this plenty of times. I've even switched airports (co-located) as a DM perk