Delta, American Airlines, British Airways, United, and various other airlines have round-trip flights from Dallas (DFW) to Dublin (DUB) for $511-$520 with a connection. Flights October to March. Departures on Monday, Tuesday, Wednesday, and Sunday.
Note: Carry-on bag is allowed for free on Delta, American Airlines, British Airways, United. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.