[07/13/2019 @ 03:40 PM CT] Deal is back on. Most of these are matched by UA.
American Airlines and British Airways have round-trip flights from Houston (IAH) to Dublin, Vienna, Helsinki, Prague, Rome, or Barcelona (DUB/VIE/HEL/PRG/FCO/BCN) for $485-$565 with a connection. Flights October to March. No Weekends. Departures on Monday, Tuesday, Wednesday, and Thursday. New Years Eve is available if you can do a 10-day stay or longer.
Note: Carry-on bag is allowed for free on American Airlines. You can avoid paying for seat selection by accepting the randomly assigned seat at the gate.