Originally Posted by
ClipperDelta
DL itself is flying to DBV from JFK starting July 2. Maybe DL may be more accommodating if you ask to switch your current flight to this set of flights to DBV instead since it's on their own metal? (e.g., ATL-JFK-DBV). You can probably use the full value of the ATL-FRA-ATL trip to apply to a new ATL-JFK-DBV and return ticket...
Note that the JFK-DBV flights are Fri/Sat only. Current cheapest D1 fares from ATL are $2903 roundtrip (28-day advance purchase ZN3X87D1 fares with 7-day min stay requirement). Oops, that should 4x weekly (Tue/Thu/Fri/Sat) with Wed/Fri/Sat/Sun returns. There is also a $2300 fare, but it has a 60-day advance purchase requirement which would require August travel.