Route guide

Jacksonville to San Juan (JAX-SJU): Nonstop Upgrade & Award Space

JetBlue Airways and Frontier Airlines fly nonstop between Jacksonville (JAX) and San Juan (SJU), roughly 14 times a week. Because so many carriers compete on this route, premium seats turn over daily, and upgrade or award space can open and close within hours. 2LNR tracks confirmed availability on every JAX to SJU departure, so you know which flights have space before you book.

Data current as of July 21, 2026, refreshed on an ongoing basis as new schedules and seats are confirmed.

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14
Nonstop flights a week
1,289 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every JAX to SJU departure

2LNR tracks confirmed upgrade and award availability on American, Delta, and Alaska and across 30 airlines, segment by segment, date by date. Open the calendar for Jacksonville to San Juan to see which departures have real space, or watch the route and get alerted when space opens.

See real availability

Confirmed upgrade and award seats on each JAX to SJU departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See JAX to SJU on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Jacksonville to San Juan nonstop

Carriers operating JAX to SJU nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

  • JetBlue Airways
  • Frontier Airlines
See JAX to SJU on the interactive map →

Frequently asked questions about JAX to SJU

How far is San Juan from Jacksonville?
JAX to SJU covers about 1,289 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from JAX to SJU?
JetBlue Airways and Frontier Airlines fly the route nonstop. 2LNR tracks confirmed upgrade and award space on both of them.
How many flights a week are there from JAX to SJU?
About 14 nonstop flights a week run between Jacksonville and San Juan in the current schedule, operated by JetBlue Airways and Frontier Airlines. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on JAX to SJU?
Open the JAX to SJU calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Jacksonville to San Juan route, and 2LNR will notify you when space opens. It's free to start.

Never miss JAX to SJU upgrade or award space

Track confirmed availability, set alerts, and book with confidence. Free to start, no credit card required.

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