Travelers have found it’s best to book a flight 33 days in advance to save up to 18% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 33 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Chicago-O'Hare Intl to Serbia 1-2 weeks in advance for as low as $1,168, or $1,168 for flights within the next 24 hours.
The best pricing can be found in the month of March. Prices to Serbia from Chicago-O'Hare Intl average $979. You can even find prices in March for less than $979, as users have found deals to Serbia from as low as $661. The month of June appears to be one of the more expensive times to travel to Serbia from Chicago-O'Hare Intl. Flying in the targeted month can save you up to 27%.