Why Millions of Travelers Are Ditching Summer for Europe's Off-Season

The Rules of International Travel Are Being Rewritten

Sick of the heat, crowds, and high prices, more U.S. travelers are discovering the offseason of international travel — and airlines and hotels are fighting for a windfall. It's a fundamental shift in how Americans think about going abroad, and the major carriers are moving fast to keep up.

Industry executives say international vacation seasons used to be far more defined — and the new trends are forcing them to rip up decades-old playbooks. As Delta President Peter Carter put it: "It used to be so much lumpier. There used to be more: good season, bad season. There are so many places you can go in Europe year-round and still have an amazing experience."

Heat, Crowds, and a Deadly Wake-Up Call

The latest challenge to usual summer European travel came in late June, when locals and tourists alike faced dangerous, record temperatures throughout Europe — where air conditioning isn't widespread. Misting stations were set up from Warsaw, Poland, to Rome. The Paris LGBTQ+ Pride march was postponed, among other events, and public alcohol consumption was briefly banned in the city.

Residents of many European cities, like Barcelona, Spain, and Venice, Italy, have also been raising concerns about overcrowding during peak summer months and beyond, even as countries throughout Europe have been bringing in record numbers of visitors. Climate has become a more important variable in trip planning. In some major destinations, especially across southern Europe, intense heat has made July and August travel less appealing. Shoulder seasons offer milder weather, a more walkable urban experience, and often better overall comfort.

Airlines Stretch Their Schedules to Cash In

United Airlines' senior vice president for network planning, Patrick Quayle, described it this way: "We've seen this massive, what I would call, the creep of the seasons — the shoulder season is blending into the full season." Shoulder season refers to the period between a destination's peak tourist season and its offseason.

Flights to once-seasonal European vacation destinations now start when there's still snow on the ground in the U.S. and wrap up when leaves are falling off the trees. American Airlines' flight to Edinburgh, Scotland from New York began in March. United Airlines' nonstop route to Palermo, Sicily from Newark, New Jersey, will end in December, and Delta Air Lines' service to Rome from Minneapolis, Minnesota, will run into January — months later than in past years. American Airlines is also stretching the seasons of U.S. trans-Atlantic travel, with October becoming "a peak month" for the carrier, even though it's not as strong as June or July.

A Financial Incentive Driving the Push

With this year's surge in jet fuel expected to take a $100 billion bite out of airline profits, according to the International Air Transport Association, it's crucial for the industry to maximize on travel trends that attract high-spending passengers. As summers grow hotter and crowds get bigger, more Americans are choosing to visit international destinations in the early spring and fall, and airlines are betting on more people taking long-haul flights during shoulder seasons by offering more international flights year-round.

Destinations also stand to benefit. Spreading tourism more evenly across the calendar can reduce peak-season overcrowding, relieve pressure on local infrastructure, and create more stable economic activity. Restaurants, tour operators, transportation providers, and cultural attractions all benefit when travel demand becomes less concentrated. For travelers, the math is simple: better weather, thinner crowds, and lower prices — all at once. The only question left is whether the rest of the world catches on before the secret gets out.