Travelers have found it’s best to book a flight 20 days in advance to save up to 10% 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 20 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 Grand Rapids to South Bend 1-2 weeks in advance for as low as $137, or $157 for flights within the next 24 hours.
Due to multiple factors, expect to potentially pay more when booking in December. For low rates, April can be a great choice for travel to South Bend. Flights to South Bend from Grand Rapids in April are about $135 on average during April, but can be found for as low as $33.