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Nonstop route

St Louis to San Juan nonstop

Yes: Southwest flies direct from St Louis (STL) to San Juan (SJU) about 1 time a week, year-round.

STLSt Louis
✈

Southwest

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1× weekly0.9 flights a week
Year-round0.9/wk Jun vs 1/wk Jan
$250–$375typical one-way · median $300 · US DOT Q2 2025
2,024miles · about 4 hr 45 min
Route detail

St Louis to San Juan in numbers

Measured from US DOT filings, not estimated from distance.

Distance and flight time
2,024 miles nonstop, about 4 hr 45 min gate to gate. Flight time is an estimate from the great-circle distance; the filings carry distance, not scheduled elapsed time.
Seasonality
Steady through the year: about 1 departures a week in July 2026 and about 1 a week in February 2026.
Who operates the flights
Southwest is the only carrier filing this pair.
Fares
Half of the 79 tickets in the US DOT fare survey for Q2 2025 sold between $250 and $375 one way, median $300. The survey runs a couple of quarters behind, so read it as the shape of the route's pricing rather than today's quote.

Flying the other way? San Juan to St Louis nonstop.

Also nonstop from St Louis (STL)

Busiest other routes out of the same airport

All 60 nonstop destinations from STL

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