Cheap Flights from St Louis to Buenos Aires
No deal from St Louis to Buenos Aires has cleared our price bar yet. What we have seen on the route is below.
Across 4 months of observations from St Louis to Buenos Aires, the lowest round-trip fare we recorded was $1064, in October. The typical fare was $1129. October was the cheapest month we saw and July the dearest.
The most recent price we saw on this route was $1064 on COPA and United, seen Oct 16. It is an unverified observation and may have changed.
See every deal <a href="/from/st-louis">from St Louis</a>, <a href="/to/buenos-aires">to Buenos Aires</a>, or the return direction <a href="/from/buenos-aires/to/st-louis">Buenos Aires to St Louis</a>.
Latest price we saw: St Louis to Buenos Aires
The most recent round-trip fare our sweep found on this route. It is not verified and may have changed since the date shown.
| From | Price | Per mile | Travel dates | Airline | Seen | Check price |
|---|---|---|---|---|---|---|
| St Louis (STL) to Buenos Aires (EZE) | $1064 | 9.7¢ | Nov 16 – Nov 25 | COPA and United | Oct 16 | Check price |
Price history: St Louis to Buenos Aires
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $1064 | $1082 | 6 |
| Sep 2026 | $1134 | $1165 | 18 |
| Aug 2026 | $1134 | $1135 | 27 |
| Jul 2026 | $1134 | $1134 | 1 |
Frequently asked questions
How many flight deals from St Louis to Buenos Aires are on Sparkflights right now?
There are 0 verified deals from St Louis to Buenos Aires on the board right now. The list refreshes hourly.
What is the lowest price ever seen from St Louis to Buenos Aires?
The lowest fare we've recorded from St Louis to Buenos Aires is $1064, based on 52 price observations over 4 months.
How much does a flight from St Louis to Buenos Aires cost?
The typical round-trip fare we observed from St Louis to Buenos Aires is $1129, against a recorded low of $1064. These are observations, not quotes.
When is the cheapest month to fly St Louis to Buenos Aires?
October was the cheapest month we observed from St Louis to Buenos Aires and July the dearest, over 4 months of data.
What is the current price from St Louis to Buenos Aires?
The most recent fare our sweep saw from St Louis to Buenos Aires is $1064, on Oct 16. It is an unverified observation rather than a verified deal, so check it before booking.