| Cheap Flights: Austin to Dublin $352-$426 r/t [October-March] â American Airlines / British Airways / Finnair / Iberia American Airlines, British Airways, Finnair, Iberia and various other airlines have round-trip flights from Austin (AUS) to Dublin (DUB) for $352-$426 with a connection. Flights October to March. Extended weekends available. COVID restrictions are still in place but this may be worthwhile for the dates later this year and next year. Click for more details and booking links Cheap Flights: Austin to Dublin $352-$426 r/t [October-March] â American Airlines / British Airways / Finnair / Iberia . | 