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Find cheap flights from St. Louis to Argentina from $961

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Argentina departing on 6/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
ven. 6/7
ven. 6/14

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Best Argentina Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Buenos Aires
Buenos Aires3 stops$961

Good to know

Low season

September

High season

December

Cheapest flight

$961
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from St. Louis to Buenos Aires Ministro Pistarini

FAQs - booking Argentina flights

  • How does KAYAK find such low prices on flights from St. Louis to Argentina?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Argentina.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Argentina?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Argentina from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Argentina?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Argentina with an airline and back to St. Louis with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Argentina?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Argentina from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Argentina

  • Morning departure is around 29% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from St. Louis to Argentina

 
Need help choosing which airline to fly with from St. Louis to Argentina? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10810 reviews
8.6Crew
8.0Entertainment
7.9Comfort
8.2Boarding
7.4Food
Airline reviews

West Jet has a horrible boarding process and the seats have no cushion.

4.0 OkayDouglas, May 2024MSP - YEG
Read more about Delta reviews

West Jet has a horrible boarding process and the seats have no cushion.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

Big plane, long flight, absolutely no leg room and basically non existent air! I am 5”4’ and always travel Main Cabin, I was miserable on this plane and could barely move when we arrived in Cabo due to the cramped leg area!

Copa performed as expected for the amount of money I was willing to spend for the flight; it wasn’t exceptional but it was not bad in any way either. The crew was good; friendly and straightforward. The food was airplane food, so no expectations there and the entertainment was lacking but that was my fault for owning an IPhone with a charging port that’s not compatible with the rest of the world. I’d fly Copa again.

Left my bags in origin city on a business class ticket , spent about 2-3 days in the same clothes plus the flight .

the planes are not modern there are no phone chargers

As usual, the flight with normal legroom was not very comfortable, but the second flight was much better because we had paid for extra legroom. It was very nice to check our bags without an extra fee.

LOCKED MY BAG WITHOUT CONSENT. Had to have my zippers cut upon arrival in Costa Rica.

Pros: "The seats in economy were confortable. The best thing was Copa gave us seats in the second line and my family traveled together."
Cons: "Coffe service could better the experience"
Pros: "The crew was very interested on help and attentive with the passengers. But the seat wasn't comfortable. The design of the cushion is not the best to be seating"
Pros: "You were on time, that is the most important thing in a fly"
Cons: "You could improve your entertainment, you are not a cheap company"
Pros: "That there was seltzer"
Cons: "The management of preparing the flight and plane so that it was ready for the trip!!"
Pros: "Copa was convenient and easy. Very easy boarding process and I appreciated the day flight."
Cons: "This is a business class that is equivalent to a US carrier domestic first class. Good seats, not lay flat but wide on my 737-800. The food and service emulated say American Airlines Domestic 1C as well. Everything was just good enough, and much cheaper that international business on the majors."

TAM is a real disappointment. We had to jump on a crowded bus for a 6am flight - although there were at least 15 available fingers that could have been used by our plane. Then, we were placed on row 30 - the last row of the plane, despite having purchased the tickets a long time ago and being TAM gold plus members. Note: worse seats on the plane. Great way of rewarding your frequent flyers TAM ! I now remember why I stoped flying internationally with TAM and moved to American, United, Swiss, Lufthansa and BA. TAM has no respect for its customers.

Everything was as you would expect in coach - fine. Flight was close to on time.

No air in the middle rows. Had a hard time breathing. Was dying of heat.

Horrific checkin procedure with neither Delta nor Latam figuring out how to check me in. 4 hrs on customer support with both and both airlines pointing to each other who should do checking. I was not checked in until morning of flight, which for international flight is concerning.

It was a good experience, the flight was a little too long & the food was ok

the flight from Boston to Curitiba was on time actually 30 minutes earlier. latam was not able to unload the luggage for custom checkup in Sao Paulo ii took two and half hours . i missed the flight to Curitiba spend the night in hotel and then flying in the morning to Curitiba

Tough flight with turbulence… I was told by a fellow passenger that it is common. Nonetheless, very stressful. Cordial staff.

Very unprofessional staff in the checking and boarding. There was no space for my carry-on bag, which is understandable for a full flight. However, the rudeness in answering my questions about my bag were unnecessary. Shaming and threatening a passenger to be left behind was something I had never experienced (I am 57 years old and a Skymiles member) before. At a minimum, the boarding staff (Krystal Mejia and her manager Dee) should undergo further training on cultural sensitivity and professional skills on speaking with passengers. Krystal, just because I have dark hair and “look Latina” does not mean I can speak Spanish. Your assumption and threatening words until the very ending of my boarding (door of the airplane) were not only unnecessary and stressful but something that a passenger should not experience before boarding.

The flight from PDX to New York was cancelled, and I got rebooked one day later. Because of this I missed a meeting at my final destination, EZE. I now need to stay longer in Argentina, and was told the tariff difference was $780 plus $150 penalty! I am not using my return ticket, and have purchased a one way ticket EZE-PDX for $606 with another airline. SHAMEFUL

Cons: "Would not let us board with 25 minutes prior to departure Because they lock their doors 35 minutes prior"

Flight was delayed 2.5 hours - a big deal on an overnight when you plan to sleep.

I feel like they have upgraded the app since I last flew United and I found it to be super helpful. I had stopped flying United unless absolutely necessary and my experience on this trip indicates they have been working hard to improve their services.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

All flights were on time and boarding was issue free

Even though we left CMI late, we mostly made up the time.

Delayed almost 4 hours for a 45 minute flight with no explanation.

Again, multiple delays and I eventually just canceled and drove!

Great crew. Very comfortable business seats with nice bedding. Good food. We were delayed to let late passengers on the flight, but otherwise great experience.

Great crew. We were delayed so that late passengers could get on the flight. Love the bedding in business class. Good food. Great experience.

The CX617 from HK to BKK was delayed more than 1.5 hours.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

I was in business class. There was an excellent headset. But half an hour before arrival they collected them! The rest of the trip I had to use a cheap earphone. There must be a better way to protect the headphones.

All four American Airlines flights I took in last seven days were delayed. Caused me loads of problems, missed meetings, loss of time and money.

American cancelled our flight home. Zero option for hotel, alternative transportation and took 3 hours to find our bags so we could take a 3 hour UBER ride home on our dime. Never flying AA again.

Book cheap flights from St. Louis to Argentina

Recent round-trip flight deals

6/6jeu.
3 stops
32h 13mSTL-EZE
6/13jeu.
3 stops
32h 41mEZE-STL
$961
7/31mer.
1 stopDelta
16h 02mSTL-EZE
10/8mar.
1 stopDelta
16h 43mEZE-STL
$1,000
8/23ven.
2 stopsLATAM Airlines
25h 35mSTL-AEP
8/27mar.
2 stopsLATAM Airlines
22h 32mAEP-STL
$1,040
7/24mer.
2 stopsLATAM Airlines
40h 15mSTL-AEP
7/30mar.
2 stopsLATAM Airlines
22h 38mAEP-STL
$1,060
5/29mer.
2 stopsAmerican Airlines
18h 00mSTL-EZE
6/17lun.
2 stopsAmerican Airlines
20h 26mEZE-STL
$1,167
5/29mer.
2 stopsUnited Airlines
21h 55mSTL-EZE
6/17lun.
1 stopUnited Airlines
21h 25mEZE-STL
$1,168
6/6jeu.
1 stopUnited Airlines
21h 05mSTL-EZE
6/13jeu.
1 stopUnited Airlines
27h 15mEZE-STL
$1,173
7/24mer.
1 stopAmerican Airlines
23h 41mSTL-EZE
7/30mar.
2 stopsAmerican Airlines
20h 27mEZE-STL
$1,391
5/29mer.
2 stopsCopa Airlines
19h 25mSTL-EZE
6/16dim.
2 stopsCopa Airlines
21h 11mEZE-STL
$2,331
5/29mer.
2 stopsCopa Airlines
19h 25mSTL-EZE
6/16dim.
2 stopsCopa Airlines
21h 11mEZE-STL
$2,409

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Recent one-way flight deals

6/6jeu.
2 stopsLATAM Airlines
32h 00mSTL-AEP
$2,142
6/6jeu.
2 stopsLATAM Airlines
34h 35mSTL-EZE
$2,142
6/6jeu.
1 stopDelta
12h 35mSTL-EZE
$2,687
6/6jeu.
3 stopsAir Canada
50h 35mSTL-EZE
$2,889

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Last minute flights from St. Louis to Argentina

Last minute flight, train and bus deals

5/12dim.
multi-stop
34h 10mSTL-EZE
5/27lun.
multi-stop
29h 39mEZE-STL
$945
5/12dim.
multi-stop
31h 05mSTL-EZE
5/27lun.
multi-stop
29h 39mEZE-STL
$963
5/12dim.
multi-stopDelta
21h 41mSTL-EZE
5/27lun.
multi-stopDelta
20h 22mEZE-STL
$1,189
5/12dim.
multi-stopAmerican Airlines
18h 00mSTL-EZE
5/27lun.
multi-stopAmerican Airlines
24h 40mEZE-STL
$1,190
5/12dim.
multi-stopAmerican Airlines
18h 00mSTL-EZE
5/27lun.
multi-stopAmerican Airlines
21h 28mEZE-STL
$1,192
5/12dim.
multi-stopLATAM Airlines
44h 58mSTL-AEP
5/27lun.
multi-stopLATAM Airlines
20h 38mAEP-STL
$1,232
5/12dim.
multi-stop
32h 05mSTL-EZE
5/26dim.
multi-stop
37h 57mEZE-STL
$1,641
5/12dim.
multi-stop
27h 46mSTL-EZE
5/26dim.
multi-stop
21h 25mEZE-STL
$2,907

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St. Louis - Argentina Flights

Departure:

St. Louis (STL)United States

Return flight deals:

Argentina - St. Louis

Cabin classes: