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STL to SDU: distance & flight time
St. Louis (St Louis Lambert International Airport) → Rio De Janeiro (Santos Dumont Airport)
5,241 mi
8,435 km · 4,554 nm
10h 45m
estimated nonstop flight time
+2h
time difference · heading southeast
See live STL→SDU fares Phone-only fares on this route — call free
Flight time details
5,241 miles nonstop takes roughly 10h 45m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- STL — St Louis Lambert International Airport · St. Louis, United States
- SDU — Santos Dumont Airport · Rio De Janeiro, Brazil
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near STL
- SUS · Spirit of St Louis Airport16 mi away
- ALN · St Louis Regional Airport20 mi away
- BLV · Scott AFB/Midamerica Airport32 mi away
- SPI · Abraham Lincoln Capital Airport84 mi away
Near SDU
- GIG · Rio Galeão – Tom Jobim International Airport9 mi away
- QNV · Aeroclube Airport22 mi away
- SNZ · Santa Cruz Air Force Base35 mi away
- CFB · Cabo Frio Airport69 mi away
Frequently asked questions
How far is STL from SDU?
The flight distance from St. Louis (STL) to Rio De Janeiro (SDU) is 5,241 miles (8,435 km, 4,554 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STL to SDU?
A nonstop flight takes about 10h 45m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between St. Louis and Rio De Janeiro?
Rio De Janeiro is 2 hours ahead of St. Louis.
What is the cheapest way to fly from STL to SDU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STL–SDU that never appear on search engines, with no booking fees.