Usually, the flights from Europe to West Coast are relatively expensive. You might find Europe – New York at 400 euro, maybe less, but not so often for San Francisco or Los Angeles. Well, Air France has some very good prices these days from Dublin to San Francisco – just 407 euro (326 £) for a return flight.
The flights are operated by Delta Airlines and you will need to change the plane in Atlanta or New York JFK and the fares are valid for flights until March 31 (obviously, the number of tickets are limited, so check them fast). How do you get to Dublin. Simply, Ryanair has plenty of flights from the Irish capital to countless places in Europe, you might also check the Irish carrier Aer Lingus which has good fares from time to time. For the best price on Air France offer, just enter the Air France UK site and book your ticket 
Sursa: WEST COAST PROMO: Dublin – San Francisco @ 407 euro / 326 £ | vezi mai multe pe ImperatorTravel