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Airport Comparison
| STL | UNI | |
|---|---|---|
| Airport Name | St Louis Lambert International Airport | Union Island International Airport |
| IATA Code | STL | UNI |
| ICAO Code | KSTL | TVSU |
| City | St Louis | Union Island |
| Country | United States | Saint Vincent |
| Timezone | America/Chicago | America/St_Vincent |
| Elevation | 617 ft | 16 ft |
| Coordinates | 38.750000, -90.370000 | 12.600000, -61.410000 |
St Louis (STL) to Union Island (UNI) Flight Distance
The flight distance from St Louis Lambert International Airport (STL) in St Louis, United States to Union Island International Airport (UNI) in Union Island, Saint Vincent is 4,073 kilometers (2,531 miles / 2,199 nautical miles). The estimated flight time for this route is approximately 6h, flying southeast at a heading of 128°.
This is a long-haul route typically operated by wide-body aircraft such as the Boeing 777 or Airbus A350. Full meal service, in-flight entertainment, and comfort amenities are standard.
This is an international route connecting United States with Saint Vincent. Travelers should check visa requirements, customs regulations, and any travel advisories before booking.
Time zone information: When it's 16:57 in St Louis, it's 17:57 in Union Island.
The return flight from Union Island (UNI) to St Louis (STL) follows a heading of 321° (northwest). Actual flight times may vary depending on wind conditions, air traffic, and the specific aircraft used.
For more information about these airports, visit the St Louis Lambert International Airport (STL) and Union Island International Airport (UNI) detail pages, or use our flight duration calculator to compare other routes.
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Flight schedule STL → UNI
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