Best Time to Fly JFK to SJU

The cheapest days to fly New York (JFK) to San Juan (SJU) are usually Wednesday. Friday is often the priciest day in the current pattern.Updated July 7, 2026.

The SERPRadio best-time-to-fly page for JFK to SJU compares departure timing while route fares, booking windows, and destination seasonality stay tied to the current publishability state.

Best to Fly

Wednesday

Departure Day

Wednesday tend to offer the lowest base fares. Avoid Friday.

Best to Book

31-45

Days Advance

Current booking window for this route.

Best to Go

APR

Lowest Fares

Historical low-season for SJU.

Analyst Brief

The timing gate for New York (JFK) to San Juan (SJU) shows strong weekday stratification. Leaving on Wednesday avoids the Friday business-travel premium. Ensure you pair this departure timing with the 31-45 day booking window.

We're showing a recent accepted-fare record for this route. SERP Radio is still gathering enough recent fares to publish departure-day guidance without turning historical timing patterns into a live fare claim.

Memory state: live publishable
Source freshness: 21.06 hours
Confidence state: high

Fare-truth signal

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JFK-SJU

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