Cheap Flights to Iceland and Ireland from the US

In its 2026 summer research, Kayak named Mexico, Iceland and Ireland as having some of the most affordable airfares for US travelers. For two destinations that feel properly far away, with dramatic coastlines and ancient landscapes, that is a useful finding. Both are close to the US by transatlantic standards, and both are served by airlines that compete hard on the route.

The geography helps. Iceland and Ireland are the closest parts of Europe to North America, so flights are shorter than to Paris or Rome, typically 5 to 7 hours from the East Coast. Shorter flights mean lower operating costs, and that often shows up in the fare.

Dublin Airport (DUB) is the main gateway, with nonstop flights from many US cities, and Shannon (SNN) on the west coast is convenient for the Wild Atlantic Way. Aer Lingus, American, Delta, United and others operate the route, with flight times of roughly 6 to 7 hours from the East Coast.

A big advantage is US customs preclearance at Dublin and Shannon. You clear US immigration and customs in Ireland before you board your flight home, so you land as a domestic arrival. Allow extra time at the airport on the way back, because the process takes a while. You can compare Delta and American on our airline pages.

Both destinations are popular in summer, and fares reach a peak between June and August. Shoulder seasons, such as April to May and September to October, offer good weather at lower prices. Winter is the cheapest time for flights, with the trade-off of short days and unsettled weather.

For Iceland, winter brings the chance of seeing the Northern Lights, and fares can be very good outside the Christmas period. For Ireland, the weather is changeable year-round, so you need to be prepared for rain whenever you go. Our guides to the best time to book in 2026 and tracking fare drops help you time your booking.

With four days you can base yourself in Reykjavik, spend one day on the Golden Circle, with its national park, waterfalls and geysers, and another along the south coast, with its black sand beaches and glacier views. A morning at a geothermal spa makes a good recovery day after the overnight flight. Winter visitors add the chance of seeing the Northern Lights, which depends on clear skies and solar activity.

With seven days you can drive much of the south and add the Snaefellsnes Peninsula. Daylight and weather shape every plan, so build flexibility into your days and check road and weather forecasts each morning. A cheap flight does not help if you are rushing through a tight itinerary.

A car gives the most freedom in both countries, but driving conditions differ. In Ireland, you drive on the left, roads can be narrow and rental cars are often manual unless you book an automatic in advance. In Iceland, you drive on the right, but weather, gravel roads and wind can create challenges.

Book early for the best prices, check the insurance carefully and make sure the car suits your plans. Our car rental service can help. If you plan to drive in winter, choose a vehicle suited to the conditions and check road reports daily.

With five days, spend two nights in Dublin for its history, pubs and museums, then take a train or drive west to Galway for a night or two, with a day trip to the Cliffs of Moher. If you have more time, continue south to the Dingle Peninsula or Kerry. The country is small, but the roads are slow, so allow longer than the map suggests.

Fly into Dublin and out of Shannon, or the reverse, to avoid doubling back. The open-jaw fare is often close to a standard round trip, and it saves a day of driving. Our specialists can price different combinations for your dates.

Transatlantic basic fares can look appealing, but they often exclude seat selection, changes and sometimes carry-on bags. For a trip of a week or more, a standard fare is usually better value, especially if you are travelling with a family.

Our comparison of basic economy and standard economy shows where the differences lie. If your plans are fixed and you pack light, basic fares can work. Otherwise, check the total cost carefully.

Weather can disrupt flights, especially in winter, and Icelandic volcanic activity has occasionally affected airspace and transport. Flexible fares and travel protection give you room to adapt, particularly if you have a tight schedule or non-refundable bookings.

Our guide to delay and cancellation rights explains what you can ask for if something goes wrong. Keep your plans simple and allow buffer days at the start and end.

If you are looking for cheap flights to Iceland or Ireland, a specialist can search routes, compare airlines and suggest stopover options. We can also help you plan a car rental and accommodation so everything fits together.

You can also check live fares below. With a little flexibility and early planning, both destinations can be very good value, and the trip may cost less than you expect.

Both countries use European-style plugs, so pack an adapter, and check whether your devices handle the voltage. US phone plans often include roaming in Ireland and Iceland for a daily fee, while a local eSIM can be cheaper for a longer stay. Card payments are widely accepted, even in remote Iceland, so you rarely need much cash.

Download offline maps before you set off, because mobile coverage can drop in remote areas. If you plan to drive, save the emergency numbers, and tell someone your route in remote areas. In Iceland, check road and weather conditions each morning at the official sites. These simple steps make a big difference to how smoothly the trip runs.