The Eurosummer season is getting longer and more popular. These 4 charts show how and where Americans are vacationing.

Over the past three years, the popularity of European summer vacations among North Americans has surged, with the number of seats added on flights to Italy growing by 69% and capacity doubling for Czechia and Croatia. Business Insider analyzed flight data from Cirium to highlight the trendiest destinations for American tourists.

The summer peak in travel demand has become more pronounced than winter travel, with capacity increasing by 77% between January and July in 2026, compared to 50% in 2010. This trend shows that the summer vacation season is getting longer, as more Americans choose to fly later in the year. The UK remains the most popular transatlantic market, with nearly double the number of annual seats compared to France and Germany.

However, three countries saw over 1 million seats added: Italy, Spain, and France. Italy, in particular, has seen the fastest growth in flight capacity and is the most popular destination among Americans, with airlines adding more seats there than any other European country. Czechia and Croatia have also seen a significant increase in capacity, with airlines relaunching routes to Prague and relaunching flights to Croatia, respectively.

While the UK as a whole saw only a 4% increase in seats, capacity on flights to Scotland increased by 70%. Ireland, Dublin, and Shannon are also on the rise in popularity, with Dublin and Shannon being the only European airports where American tourists can cross the border before taking off for the US. Denmark is also contributing to the growth of Scandinavian travel, with fashionable Copenhagen and new flights to Billund, home of Lego.