Flight Deals from Chicago O Hare Airport to Belgrade from $435

Flights from Chicago to Belgrade are most expensive in late June and cheapest in early January.

When planning your trip from Chicago to Belgrade, be mindful of the price variations throughout the year. The peak travel seasons, particularly in late June, often see significantly higher fares peaking at around $1,386, while early January offers lower prices, dipping to about $762. An abrupt increase occurs in mid-May leading into summer, followed by a sudden decline in early September, marking the transition into more affordable travel months. In summary, expect much higher rates during peak summer months compared to more budget-friendly options in early winter and late spring.

Book your flight from Chicago to Belgrade at least 181 days in advance for the best price.

If you're planning to fly from Chicago to Belgrade, the best time to buy is at least 181 days before departure, when prices are around $833. As your departure date approaches, prices rise steadily, peaking at about $1,000 less than a week before departure. A notable drop occurs around 51 days before your trip, where prices may dip to approximately $855. However, if you’re inside this 51-day window, book immediately to avoid escalating costs, as prices will exceed $1,000 closer to departure.