Travelers have found it’s best to book a flight 35 days in advance to save up to 20% 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 35 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 Appleton to Barcelona 1-2 weeks in advance for as low as $801, or $850 for flights within the next 24 hours.
Due to multiple factors, expect to potentially pay more when booking in June. For low rates, November can be a great choice for travel to Barcelona. Flights to Barcelona from Appleton in November are about $804 on average during November, but can be found for as low as $455.