| Cheap Flights: Austin and San Antonio to Dublin $501 r/t [July-August] â United / American / British Airways / Delta United, American Airlines, British Airways, Delta and various other airlines have round-trip flights from Austin or San Antonio (AUS/SAT) to Dublin (DUB) for $501 with a connection. Flights July to August. 7-day minimum stay required. Ireland plans to allow vaccinated travelers entry without a quarantine requirement starting July 17th [per: Travel & Leisure / Reuters]. Click for more details and booking links Cheap Flights: Austin and San Antonio to Dublin $501 r/t [July-August] â United / American / British Airways / Delta . | 