Cheap flights from South America to St. Louis from $265
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from South America to St. Louis departing on 7/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from South America to St. Louis
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to St. Louis?
In general, August is the cheapest month to fly from South America to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $755. The month of September is another great option to travel to St. Louis, with average flight prices from South America averaging around $785.
What is the cheapest day to depart on your flight to St. Louis?
The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $624. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $908. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.
What is the cheapest airline that flies from South America to Lambert-St Louis?
Spirit Airlines, GOL, and Copa Airlines are the most popular carriers operating from South America to Lambert-St Louis
What airlines fly to St. Louis?
Delta, LATAM Airlines and American Airlines are the top three most popular airlines that fly to St. Louis from South America according to our data. Delta is the first choice among our users, with 39% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 3 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
Cheap South America to St. Louis flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from South America to St. Louis
When did momondo last update prices for flights from South America to Lambert-St Louis Airport?
Prices for flights from South America to Lambert-St Louis Airport were last updated today.
How many operators does momondo search for flights from South America to Lambert-St Louis Airport?
The number of operators available for flights from South America to Lambert-St Louis Airport is 3 as of June 2025.
How old do you have to be to fly from South America to Lambert-St Louis Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from South America to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
Best airlines flying from South America to St. Louis
Compare and see reviews for airlines that fly from South America to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $443 | Free Cancellation | Rating 7.5 1,797 reviews | |||
| PriceFrom $484 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $624 | Free Cancellation | Rating 8.0 7,963 reviews |
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Why should I use momondo to find a flight deal from South America to St. Louis?
It is quick and easy to find South America to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.
Can I find flights from South America to St. Louis with flexible booking policies on momondo?
All flight searches from South America to St. Louis on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from South America to St. Louis?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from South America.
I’m not ready to book a flight from South America to St. Louis right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of South America to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.