Cheapest month to fly to San Juan (SJU)
September 2026 is the cheapest month to fly to San Juan, Puerto Rico based on current forward fare data from 3 major international gateways.
Cheapest month from each major origin
Month-by-month price comparison
Lowest fare per calendar month, per origin. Data refreshes daily.
New York (JFK) → San Juan
- September 2026 $109
- August 2026 $155
- December 2026 $206
- July 2026 $240
Frequently asked questions
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What is the cheapest month to fly to San Juan?
Based on current 6-month forward fare data, September 2026 is the cheapest month to fly to San Juan (SJU) from major international gateways including London, New York, and Dubai.
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How much is a flight to San Juan?
From London (LHR), the cheapest current fare to San Juan is $582 on 2026-11-24. Prices vary by origin — see the full comparison table.
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Where is San Juan (SJU)?
San Juan is in Puerto Rico. Luis Munoz Marin International (SJU) is the main commercial airport with 59 non-stop destinations.
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How do you calculate the cheapest month?
We pull 6 months of forward fare data from the affiliate-network month-matrix API for each route, find the lowest price per calendar month, then identify which month is cheapest across multiple major-market origins. Cached daily.
Related guides for San Juan
Sibling pages — airport overview, country aggregations, visa context.