Flight Deals from Jacksonville to Puerto Rico from $143

Traveling from Jacksonville to San Juan is most expensive from mid-March to late June and mid-December, while low fares are typically found from mid-January to mid-February.

When planning your flight from Jacksonville to San Juan, consider that the peak pricing season generally spans from mid-March to late June and again around mid-December, with the highest prices occurring during late December. Conversely, flights tend to be more affordable from mid-January through mid-February and again in early April. The most significant peak price occurs during late December, while the best time for low fares is late January, showing a price variation of about $400 or more between high and low seasons. Abrupt changes in pricing occur at the end of February and around mid-April.

Best to buy from 49 to 54 days before departure; prices rise rapidly afterward.

For your trip from Jacksonville to San Juan, the best time to buy your ticket is between 49 to 54 days before departure, when prices are lowest around $381. Prices are significantly higher if you book earlier, reaching up to $526. After the 50-day mark, expect consistent price increases, especially within the final week, when costs soar to between $521 and $605. If you find yourself less than 20 days from your departure, consider posting your purchase as prices may dip slightly, but do not delay past 7 days, or you will face escalating rates. Overall, aim to buy tickets early in the 49 to 54-day window for the best deal.