Summer Is Calling: This Is the Cheapest European City to Fly to From the U.S.

As summer approaches, a warm, European vacation may be popping up in your daydreams. Europe may not be known as a budget-friendly travel destination when you're based in the U.S., but with the right insider information, you can book a flight at record low costs—it's all about knowing when and where to go. According to median flight prices from top U.S. airports listed on travel comparison site Kayak, you can fly to some of the most popular European cities for under $500 round-trip, Condé Nast Traveler reports. The most affordable destination on the list? Brussels, Belgium. You can book a round-trip ticket to this destination for a median price of $379, depending on where you depart from. Other affordable European destinations include Reykjavík, Iceland; Budapest, Hungary; and Venice, Italy. You can journey to all of these wanderlust-inducing cities for under $500 from a variety of cities across the U.S. Ready to start planning your dream summer vacation? Take a look at the median prices for flights to these gorgeous cities below.

1. Brussels, Belgium. Depart from Denver for a summer median cost of $397 round-trip.

2. Reykjavík, Iceland. Depart from Los Angeles, Detroit, Baltimore, Chicago, and Orlando for a summer median cost of $404 round-trip.

3. Budapest, Hungary. Depart from Minneapolis for a summer median cost of $463 round-trip.

4. Venice, Italy. Depart from Salt Lake City for a summer median cost of $498 round-trip.

Head to Condé Nast Traveler for more on the cheapest flights to European cities.