To save on the cost of your flight from Jacksonville to Ontario, book at least 61 days before your planned departure. Booking around this time can save you about 45% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $261 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $285.
Flights from Jacksonville to Ontario lean towards being more expensive in December. Prices are generally better when you fly from Jacksonville to Ontario in August, with the cheapest ticket starting at $111.
The chart below displays the airlines Cheapflights users traveling from Jacksonville to Ontario choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
||$111||$274||No cancel fee||N/A|
||$138||$284||No cancel fee||71%|
||$184||$376||No cancel fee||69%|
||$191||$379||No cancel fee||67%|