United Airlines fares to Dublin briefly dropped under $400 round trip today from Newark EWR. Low fare to Dublin at noon today California time from Newark EWR and Washington IAD is $438 round trip. There are some $444 round trip itineraries with United nonstop between EWR and DUB both ways. Lowest fares involve flying Air Canada Rouge at least one way via Toronto. An alternative is $480 for United and Aer Lingus.
These fares are available for departures from late August to March 2017. Availability is about 50% of dates from Sep-Nov, Jan-March.
$443 United Nonstop Flights EWR to DUB round trip
United Airlines Newark EWR – Dublin, Ireland DUB
$443.26 Sun Oct 2 – Thu Oct 13
St.Patrick’s Day in Ireland
United Airlines nonstop to Dublin / Air Canada Rouge back
Washington IAD – Dublin DUB – Toronto YYZ – Washington IAD
$437.96 Monday March 13 – Wednesday March 22
United Airlines nonstop to Dublin / Aer Lingus to London for United flight to IAD
Washington IAD – Dublin DUB – London LHR – Washington IAD
$479.66 Monday March 13 – Wednesday March 22