Best-time briefing
Best Time to Fly JFK to SJU
For New York (JFK) to San Juan (SJU), Tuesday had the lowest median verified round-trip price among supported departure weekday groups in 291 accepted price checks observed from 2026-07-28 through 2026-10-26.
At a glance
Flight timing guidance for New York to San Juan
For New York (JFK) to San Juan (SJU), Tuesday had the lowest median verified round-trip price among supported departure weekday groups in 291 accepted price checks observed from 2026-07-28 through 2026-10-26.
How to read this departure-day page
Use this page to choose departure days and months for New York to San Juan; purchase timing lives on the best-time-to-book page.
The fare evidence used by this timing page was observed on October 26, 2026.
Departure-day timing is strongest when a traveler can shift by one or two days; the route dossier should be checked before purchase because inventory can still move after the timing pattern is computed.
What could change this guidance
For New York to San Juan, new accepted observations, the observed departure-day spread shifting with demand, a schedule change, or a seasonal transition can change this guidance. When the evidence changes, the guidance changes with it.
Evidence behind this New York to San Juan guidance
Evidence base: This analysis uses 291 verified price checks ending October 26, 2026.
Related SERPRadio briefings for New York to San Juan
Who: SERP Radio timing system
How: Timing pages combine route-level fare observations, seasonality inputs, and destination context.
Why: This page exists to answer a timing question quickly, then hand off to the most relevant route surface.
Limits: Timing guidance is directional and can soften when current route coverage is limited.