American Airlines will suspend a total of 60% of its international capacity in compare with 2019. Many routes are completely canceled for this summer, including PHL - DBV.
AA will cancel 25 seasonal routes from the US to many European destinations, including the service between Philadelphia and Dubrovnik.
American Airlines began seasonal operations between PHL and DBV back in June 2019. with 3 flights per week, those were increased in September to 4pw with Boeing 767-300ER (capacity of 209 seats). Flights had great loads and AA announced that the route between those two cities will run daily during the S20 season. Dubrovnik was supposed to have daily direct flight to the USA!
Unfortunately, global corona virus situation changed everything. Let's hope AA will be back in S21!