For the first time in a long time, the US dollar is strong while the euro and other European currencies are relatively weak, which means that a favorable exchange rate is on the horizon for American travelers. That also means this fall is the perfect time to embark on a European vacation, as prices are dropping.
Of course, crossing the Atlantic can still be pretty steep. To help you figure out the best gateways to Europe, Hopper gathered billions of bits of flight-price data and came up with a list of the 5 cheapest cities in Europe to fly to this fall. Happy travels.
5. Dublin
Average flight price from the US: $822
If you've ever wanted to see Ireland, 2015 may just be your year. Dublin's airport has seen an increase in traffic over the past few years and is in the middle of an ambitious plan to expand its network of long-haul routes, which is good news for American fliers from several cities. They can enjoy flights to Dublin for an average of just $822. Currently, United Airways and Ireland's own Aer Lingus operate direct flights from Boston, Washington-Dulles, Orlando, San Francisco, and New York's JFK and Newark airports, while Atlanta and Chicago residents can enjoy direct service in summer months with American and Delta Air Lines.
4. Milan
Average flight price from the US: $799
Malpensa Airport is the largest airport serving the Milan metropolitan area. It handles millions of passengers each year and is a focus city for a handful of airlines, including EasyJet and Alitalia. Flights to and from the United States, at an average round-trip cost of $781, include direct service to New York and Miami as well as seasonal service to Hartsfield-Jackson Atlanta International Airport. All in all, Milan Malpensa tends to be the better option than Linate for fliers eager to reach Milan without layovers (and for less money). Think of all the high-end fashion you could buy with the money you save. (See you at 10 Corso Como.)
3. Reykjavik 
Average flight price from the US: $783
Who could resist the appeal of Iceland's unique volcanic landscape and surprisingly trendy capital? Keflavik International Airport, which serves as a hub for both Icelandair and WOW Air, makes it easy to cross this awesome destination off your bucket list by offering scheduled flights to and from a whopping 10 locations in the United States: Anchorage, Baltimore, Boston, Denver, Minneapolis, Newark, New York City, Orlando, Portland, Seattle, and Washington. And with an average flight price of just $783, Iceland is easier to visit than ever.
2. Stockholm
Average flight price from the US: $750
A round trip to Europe for $750 (or much less)? This budget-minded traveler's dream is well within reach if you make Stockholm your next destination. Arlanda Airport has, in recent years, become a major gateway for international travel to destinations all over the world. New Yorkers can fly there cheaply with Scandinavian Airlines, United, Delta or Norwegian Air Shuttle, the last of which also offers service to Oakland and Los Angeles. The Swedish capital can be a bit spendy, so why not save on your airfare there?
1. Copenhagen
Average flight price from the US: $747
We've seen prices to Copenhagen drop for several months, and now the Danish city is officially the cheapest European metro to reach, with average flight prices of just $747! For East Coasters, prices can actually be much less (think $500 range). This makes it possible for travelers to explore the country's white cliffs, primeval forests, deserted dunes, and picturesque waterfront attractions without breaking the bank. The airport is also a great gateway to other Nordic countries, as it serves as an operating base for Thomas Cook Airlines Scandinavia and Norwegian Air Shuttle, in addition to being the main hub for Scandinavian Airlines. So consider Copenhagen for your entryway into Europe as a whole.
This article originally appeared on Hopper.com, home of the flight-prediction app that tells you when to fly and buy. Currently available on iPhone, Hopper for Android is launching later this summer.