Originally Posted by
xliioper
I was able to recreate same error. After selecting a non-refundable FC fare for the outbound, it seems to think I actually selected a Refundable Main fare for outbound instead.
Note that Google Flights works just fine for pulling up roundtrip FC fares on these routes on delta.com.
Thanks! I’ve never used google flights to actually proceed to booking something - only used as a search tool. Assuming you can book via the blue button in your screenshot, I’ll give that technique a try if this error persists when I’m ready to book.