Travelers have found it’s best to book a flight 22 days in advance to save up to 9% 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 22 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 Frankfurt-Hahn 1-2 weeks in advance for as low as $692, or $759 for flights within the next 24 hours.
It’s optimal to fly from Chicago-O'Hare Intl to Frankfurt-Hahn in the morning. By choosing this option you can save up to 3% on the cost of your flight, compared to a flight at noon.