The cheapest month to fly to Reno is the month of January. Prices for round-trip flights during this period are between $242 and $302, depending on what airline you choose for your flight. The most expensive month to fly is July, but only by a small margin. Round-trip flights during this period cost between $284 and $342. If you’re looking for a little more budget-friendly option, then October might be just right for you! Round-trip flights during this period cost between $236 and $282 per person on average.