Saint Croix to San Juan (STX-SJU): Nonstop Upgrade & Award Space
Cape Air and JetBlue Airways fly nonstop between Saint Croix (STX) and San Juan (SJU), roughly 32 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 STX 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.
Confirmed upgrade & award space on every STX 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 Saint Croix 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 STX 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 STX to SJU on the interactive route map, with schedules, connections, and route statistics.
Airlines flying Saint Croix to San Juan nonstop
Carriers operating STX to SJU nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.
- Cape Air
- JetBlue Airways
Frequently asked questions about STX to SJU
How far is San Juan from Saint Croix?
Which airlines fly nonstop from STX to SJU?
How many flights a week are there from STX to SJU?
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