Delta and KLM have round-trip flights from Dallas (DFW) to Dubrovnik (DBV) for $505-$570 with one or two connections. Flights July to August. No Sunday departures. 7-day minimum stay required.
Croatia is reopen to tourism. Travelers need proof of paid-in-advance accommodations, and either proof of vaccination or a negative COVID test for entry. Fill out form on Croatian web-portal before arriving.