Thinking of heading to Ireland anytime soon? Aer Lingus has arrived to give you yet another reason to turn that thought into action. They’ve got some great winter fares from U.S. cities to cities in Ireland available right now. Some of the round-trip ticket prices you can find are:

• Washington DC to Dublin from $298
• New York to Shannon from $338
• Boston to Dublin from $338
• Chicago to Shannon from $358
• San Francisco to Dublin from $438

The dates these fares are valid varies depending on the city you’re departing from, so you’ll have to read the details on the sale in order to figure out whether it will work for your trip – but in general, you can expect to see the best prices on travel dates that are Monday-Thursday rather than weekends. The sale prices are available on select dates from now until the end of March 2009, but you’ve got to book by December 20th in order to take advantage of the deal.