Route guide

Miami to Saint Croix (MIA-STX): Nonstop Upgrade & Award Space

American Airlines flies nonstop between Miami (MIA) and Saint Croix (STX), roughly 14 times a week. With American Airlines operating this route so often, premium seats still turn over daily, and upgrade or award space can open and close within hours. 2LNR tracks confirmed availability on every MIA to STX 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
1,139 mi
Nonstop distance
Free
To get started

Confirmed upgrade & award space on every MIA to STX 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 Miami to Saint Croix 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 MIA to STX 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 MIA to STX on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Miami to Saint Croix nonstop

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

  • American Airlines
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Frequently asked questions about MIA to STX

How far is Saint Croix from Miami?
MIA to STX covers about 1,139 miles nonstop. Flight times vary by aircraft and season; each scheduled departure on this page lists its own times.
Which airlines fly nonstop from MIA to STX?
American Airlines is currently the only airline flying MIA to STX nonstop. 2LNR tracks confirmed upgrade and award space on every American Airlines departure.
How many flights a week are there from MIA to STX?
About 14 nonstop flights a week run between Miami and Saint Croix in the current schedule, operated by American Airlines. Frequency shifts by season; the calendar on this page reflects what's currently scheduled.
How do I check upgrade or award availability on MIA to STX?
Open the MIA to STX calendar on this page to see confirmed upgrade and award space by date. You can also set an alert on the Miami to Saint Croix route, and 2LNR will notify you when space opens. It's free to start.

Never miss MIA to STX upgrade or award space

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

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