American and Icelandair have round-trip flights in their “Basic/Light” fare-class from Dallas (DFW) to Dublin (DUB) starting at $354 with a connection. Flights from October to mid-December. No Christmas or New Years. 7-day minimum stay required.
Note: Carry-on bag is allowed for free, but to check a bag will cost +$60 more each-way on AA or +$75 more on Icelandair. You should be able to upgrade to a “Standard” fare-class for about +45 more each-way on AA, or $50 more each-way on Icelandair. Upgraded fares allow for a free carry-on and checked-bag.
Note: Icelandair maximum weight for carry-on bag is lower than AA. 22-lbs vs 40-lbs.
Read More Cheap Flights: Dallas to Dublin $354-$468 r/t – Icelandair / American