Update: Some offers mentioned below are no longer available. View the current offers here.Want to see the latest flight deals as soon as they’re published? Follow The Points Guy on Facebook and Twitter, and subscribe to text message alerts from our deals feed, @tpg_alerts.Airfare deals are typically only available on limited dates. We recommend you use Google Flights to find dates to fly, then book through an online travel agency such as Expedia, Orbitz or Priceline, which allows you to cancel flights without penalty within one day of booking. However, if you’re using the American Express Platinum Card, you’ll need to book directly with the airline or through Amex Travel portal to get 5x MR points. Remember: Fares may disappear quickly, so book right away and take advantage of the airline’s 24 hour cancellation policy if you’re unable to get the time away from work or family.Just because St. Patrick’s Day has come and gone doesn’t mean you have to lose the Irish spirit! Take advantage of these great fares to Dublin, Ireland (DUB) from cities all around the US and you can easily find yourself enjoying the magic of an Irish coffee while lounging along the banks of the River Liffey.You’ll find these fares in April and May, and also again after the summer travel season in September through November. Just use Google Flights to search for the best dates from your departure city, then book with the airline directly or with an OTA such as Expedia, Orbitz or Priceline. Note that Aer Lingus charges for checked bags on its international flights, but fares on other airlines should include a free checked bag.Airlines: Aer Lingus, Air Canada, United, AmericanRoutes: JFK/BOS/PHL/MSP/LAS/SEA to DUBCost: $374+ round-trip in economyDates: April-May and September-November depending on the routeBooking Link: Expedia, Orbitz, Priceline or with the airline directlyPay With: The Platinum Card from American Express (5x on airfare), Chase Sapphire Reserve, Citi Prestige (5x on airfare) or Chase Sapphire Preferred Card (2x on travel)Here are a few examples of what you can book:New York (JFK) to Dublin, Ireland (DUB) for $374 round-trip via Aer Lingus:Seattle (SEA) to Dublin (DUB) for $411 round-trip via United/Air Canada:Boston (BOS) to Dublin (DUB) for $414 round-trip via Aer Lingus:Philadelphia (PHL) to Dublin (DUB) for $415 round-trip via Aer Lingus:Las Vegas (LAS) to Dublin (DUB) for $515 round-trip via United/Air Canada:Minneapolis (MSP) to Dublin (DUB) for $554 round-trip via American:Maximize Your PurchaseDon’t forget to use a credit card that earns additional points on airfare purchases, such as The Platinum Card from American Express (5x on flights booked directly with airlines or American Express Travel), Chase Sapphire Reserve, or Citi Prestige (5x on airfare) or the Chase Sapphire Preferred Card (2x on all travel purchases). Check out this post for more on maximizing airfare purchases.H/T: Scott’s Cheap FlightsSign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.