Frontier AirlinesF967% on time
Flights F93305 06:26 daily
live
Direct flights from San Juan (SJU) to Jacksonville (JAX): 14 nonstop departures observed each week across 2 airlines. 77% of the last 13 operated flights arrived within 15 minutes of schedule. The median arrival is 10 minutes early. 1 of the 13 tracked flights was cancelled. The nonstop covers 2,073 km, an estimated 3 hours 9 minutes in the air. Measured by Pro Flight Search from live flight boards at San Juan and Jacksonville. Updated 17 August 2026 at 19:48 UTC.
SJU
San Juan
smooth · +11
JAX
Jacksonville
smooth · +0
2,073 km · ~3h 09m est.
Runs mixed · 2 airlines · 14x weekly · nonstop
77% on time
of the last 13 operated SJU → JAX flights arrived within 15 minutes
Median arrival delay is −10 min. 1 of 13 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Search live fares for this route →Median arrival−10 minacross the last 13 operated legs
Flight time~3h 09mestimated from route distance
Weekly departures14x2 direct airlines on the leg
Cancelled7.7%recent route rate · 1 of 13
Current nonstop fares
SJU → JAX · one way · economy · 1 adult
TodayChecking…Direct airline fares
TomorrowChecking…Direct airline fares
In one weekChecking…Direct airline fares
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Frontier AirlinesJetBlue Airways
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysJetBlue AirwaysB686% on time
Flights B61742 varies daily
History
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Current conditions put the pressure at SJU: 54% odds of a 15+ minute delay and around +22 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the San Juan to Jacksonville route actually runs
Pro Flight Search tracks every published board update for nonstop SJU to JAX flights: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises. Fares link straight to the operating airline with no markups.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — San Juan (SJU) to Jacksonville (JAX) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/SJU-JAX
SJU to JAX questions
Is SJU–JAX running on time right now?
Smooth skies ahead. The departure side at SJU is the weaker end, route health score 92/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from SJU to JAX?
Great-circle distance is 2,073 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 176–208 min gate-to-gate on this route.
How often does SJU–JAX fly?
2 carriers operate this route, around 14 flights a week between them. Compare carrier days and times in the airline list above.
What does the route health score measure?
A blend of departure-side delay at SJU and arrival-side delay at JAX, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
.