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STL to MCS: distance & flight time
St. Louis (St Louis Lambert International Airport) → Monte Caseros (Monte Caseros Airport)
5,214 mi
8,391 km · 4,531 nm
10h 41m
estimated nonstop flight time
+2h
time difference · heading southeast
See live STL→MCS fares Phone-only fares on this route — call free
Flight time details
5,214 miles nonstop takes roughly 10h 41m 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
- MCS — Monte Caseros Airport · Monte Caseros, Argentina
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 MCS
- UZU · Curuzu Cuatia Airport40 mi away
- URG · Rubem Berta Airport49 mi away
- AOL · Paso De Los Libres Airport50 mi away
- ATI · Artigas International Airport68 mi away
Frequently asked questions
How far is STL from MCS?
The flight distance from St. Louis (STL) to Monte Caseros (MCS) is 5,214 miles (8,391 km, 4,531 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STL to MCS?
A nonstop flight takes about 10h 41m 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 Monte Caseros?
Monte Caseros is 2 hours ahead of St. Louis.
What is the cheapest way to fly from STL to MCS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STL–MCS that never appear on search engines, with no booking fees.