Travelers have found it’s best to book a flight 37 days in advance to save up to 14% 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 37 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 to Hong Kong 1-2 weeks in advance for as low as $653, or $734 for flights within the next 24 hours.
Flights from Chicago to Hong Kong lean towards being more expensive in July. Prices are generally better when you fly from Chicago to Hong Kong in September, with the cheapest ticket starting at $502.