Cheap flights from St. Louis to Buenos Aires from $380
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Buenos Aires departing on 8/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from St. Louis to Buenos Aires
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
American Airlines flights from St. Louis to Buenos Aires Ministro Pistarini Airport
Our best American Airlines deals on St. Louis to Buenos Aires Ministro Pistarini Airport flight tickets
Air Canada flights from St. Louis to Buenos Aires Ministro Pistarini Airport
Our best Air Canada deals on St. Louis to Buenos Aires Ministro Pistarini Airport flight tickets
See travel insights to Buenos Aires from
How to get the cheapest flight ticket from St. Louis to Buenos Aires Ministro Pistarini Airport
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 day to depart on your flight to Buenos Aires Ministro Pistarini Airport?
Our data shows that Tuesday is the least expensive day to fly to Buenos Aires Ministro Pistarini Airport. Tickets to fly out on this day can be as low as $1,023. Be sure to avoid booking your departure on a Wednesday as prices are generally higher than usual. According to our data, the average ticket price to Buenos Aires Ministro Pistarini Airport on Wednesday is $1,341.
What is the cheapest time of day to depart on your flight to Buenos Aires Ministro Pistarini Airport?
According to our data, the cheapest time of day to fly to Buenos Aires Ministro Pistarini Airport is in the evening. momondo users have found flights departing from St. Louis to Buenos Aires Ministro Pistarini Airport in the evening for as low as $1,188. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,287 on average. Flights to Buenos Aires Ministro Pistarini Airport from St. Louis at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest airline that flies from Lambert-St Louis to Buenos Aires Ministro Pistarini?
Avianca, Air Canada, and Delta are the most popular carriers operating from Lambert-St Louis to Buenos Aires Ministro Pistarini
What airlines fly to Buenos Aires Ministro Pistarini Airport?
United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Buenos Aires Ministro Pistarini Airport from St. Louis according to our data. United Airlines is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Buenos Aires Ministro Pistarini Airport. Keep in mind that there are 3 different airlines that fly to Buenos Aires Ministro Pistarini Airport on a routine basis, so you have a few additional options to choose from.
When to book flights from St. Louis to Buenos Aires Ministro Pistarini Airport
Cheap St. Louis to Buenos Aires Ministro Pistarini Airport (STL to EZE) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Buenos Aires Ministro Pistarini Airport
How far is Lambert-St Louis to Buenos Aires Ministro Pistarini by plane?
Buenos Aires Ministro Pistarini is 5460.2 mi away from Lambert-St Louis. A reasonable flight in good conditions will take 14h 22m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Buenos Aires Ministro Pistarini Airport?
Prices for flights from Lambert-St Louis Airport to Buenos Aires Ministro Pistarini Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Buenos Aires Ministro Pistarini Airport?
As of June 2025, there are 3 operators available to choose from for flights from Lambert-St Louis Airport to Buenos Aires Ministro Pistarini Airport.
How old do you have to be to fly from Lambert-St Louis Airport to Buenos Aires Ministro Pistarini Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Buenos Aires Ministro Pistarini Airport.
What documentation or ID do you need to fly to Buenos Aires Ministro Pistarini Airport?
The necessary travel and health documents for your Buenos Aires Ministro Pistarini Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Buenos Aires Ministro Pistarini Airport?
Based on momondo bookings for flights between St. Louis and Buenos Aires Ministro Pistarini Airport, the leading airline is United Airlines, making up 41% of the total bookings. Other popular airlines include American Airlines with 30% and Delta with 30%.
Best airlines flying from St. Louis to Buenos Aires Ministro Pistarini Airport
Compare and see reviews for airlines that fly from St. Louis to Buenos Aires Ministro Pistarini Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $1,023 | Free Cancellation | Rating 8.0 7,950 reviews | |||
| PriceFrom $1,025 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $1,053 | Free Cancellation | Rating 7.4 8,790 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from St. Louis to Buenos Aires?
Finding the right flight to Buenos Aires from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Buenos Aires quick and easy, saving you time and money.
Can I find flights from St. Louis to Buenos Aires with flexible booking policies on momondo?
Yes. All flights to Buenos Aires from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from St. Louis to Buenos Aires?
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 Buenos Aires from St. Louis.
I’m not ready to book a flight from St. Louis to Buenos Aires right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Buenos Aires from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.