From most locations, the cheapest flights to Rijeka can be found during the month of September; however great deals can be found at other times.
In general, most flyers find the cheapest time to book a flight to Rijeka is about 48 days prior.
In general, booking your departure to Rijeka for a Monday represents the best deal on airfare. Try to avoid a Saturday departure to stay away from the highest prices.
On average you can find the best deals on plane tickets to Rijeka when looking for flights with afternoon departure times.