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$371+ Cheap flights from Missouri to Buenos Aires (BUE)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BUE
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Missouri to Buenos Aires

Keep the following information in mind while searching for Missouri to Buenos Aires flight deals. Data was last updated September 16, 2025.

Round-trip from

$1,019
(Delta)

One-way from

$371
(Kiwi.com)

Popular in

August

Cheapest in

March

Average price

$1,240
From Missouri to Buenos Aires (BUE)
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One-way flight from Missouri to Buenos Aires (BUE)
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Highest demand for flights based on searches. 5% potential increase in price ($65 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Missouri to Buenos Aires

Cheapest flights from Missouri to Buenos Aires
Explore the most affordable flight options available from Missouri to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/65:15 pmSTL - EZE
2 stops18h 40mDelta
Wed 11/1910:25 pmEZE - STL
1 stop20h 25mDelta
Deal found 9/15$1,019
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/187:05 amSTL - EZE
2 stops19h 50mDelta
Wed 11/268:55 pmEZE - STL
1 stop16h 09mDelta
Deal found 9/16$1,025
This Expedia deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/231:55 pmSTL - EZE
2 stops57h 55mLATAM Airlines
Sun 11/303:55 pmEZE - STL
2 stops34h 45mLATAM Airlines
Deal found 9/14$1,063
This Expedia deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/67:05 amSTL - AEP
2 stops29h 55mLATAM Airlines
Wed 11/196:20 pmAEP - STL
2 stops19h 29mLATAM Airlines
Deal found 9/15$1,064
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:08 amMCI - EZE
1 stop20h 12mUnited Airlines
Sat 12/2711:55 pmEZE - MCI
1 stop13h 41mUnited Airlines
Deal found 9/16$1,065
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/62:08 pmSTL - EZE
2 stops15h 52mAmerican Airlines
Wed 11/1911:20 pmEZE - STL
2 stops16h 57mAmerican Airlines
Deal found 9/15$1,073
This KAYAK deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/115:12 pmMCI - EZE
2 stops18h 43mLATAM Airlines
Sat 12/278:00 amEZE - MCI
2 stops18h 57mLATAM Airlines
Deal found 9/15$1,075
This Mytrip deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/294:05 pmSTL - EZE
2 stops33h 40mMultiple Airlines
Wed 11/57:50 amEZE - STL
3 stops30h 11mMultiple Airlines
Deal found 9/13$1,075
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/610:17 amSTL - EZE
1 stop30h 13mMultiple Airlines
Tue 11/182:40 amEZE - STL
2 stops35h 21mMultiple Airlines
Deal found 9/15$1,087
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/233:14 pmSTL - EZE
2 stops37h 06mUnited Airlines
Sun 11/3011:55 pmEZE - STL
1 stop25h 27mUnited Airlines
Deal found 9/14$1,096
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2910:35 amMCI - EZE
1 stop17h 45mUnited Airlines
Wed 11/511:55 pmEZE - MCI
1 stop19h 43mUnited Airlines
Deal found 9/14$1,100
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3011:20 amSTL - EZE
1 stop17h 00mUnited Airlines
Thu 11/611:55 pmEZE - STL
1 stop13h 44mUnited Airlines
Deal found 9/15$1,100

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri to Buenos Aires that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Missouri to Buenos Aires that are best for you.

Fly from

Missouri

Fly to

Buenos Aires

Route

Depart

Return

Price

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Thu 11/6

5:15 pm-2:55 pm

2 stops18h 40m

Buenos Aires Ministro Pistarini

Wed 11/19

10:25 pm-3:50 pm

1 stop20h 25m

$1,019

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 11/18

6:00 am-6:20 am

2 stops21h 20m

Buenos Aires Ministro Pistarini

Wed 11/26

7:43 pm-10:04 am

2 stops17h 21m

$1,025

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Tue 11/18

9:21 am-9:00 am

1 stop20h 39m

Buenos Aires Ministro Pistarini

Wed 11/26

8:55 pm-1:56 pm

1 stop20h 01m

$1,025

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 11/23

1:55 pm-2:50 am

2 stops57h 55m

Buenos Aires Ministro Pistarini

Sun 11/30

3:55 pm-11:40 pm

2 stops34h 45m

$1,063

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Thu 11/6

7:05 am-4:00 pm

2 stops29h 55m

Buenos Aires Jorge Newbery

Wed 11/19

6:20 pm-10:49 am

2 stops19h 29m

$1,064

Kansas CityBuenos Aires

MCI - EZE

MCIEZE

Kansas City

Thu 12/11

6:15 am-9:20 am

1 stop24h 05m

Buenos Aires Ministro Pistarini

Sat 12/27

11:55 pm-10:36 am

1 stop13h 41m

$1,065

Kansas CityBuenos Aires

MCI - EZE

MCIEZE

Kansas City

Thu 12/11

8:05 am-9:00 am

1 stop21h 55m

Buenos Aires Ministro Pistarini

Sat 12/27

8:00 am-12:19 am

2 stops19h 19m

$1,065

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Sun 3/8

11:51 am-7:55 am

2 stops18h 04m

Buenos Aires Jorge Newbery

Tue 3/17

3:40 pm-10:50 am

2 stops21h 10m

$1,065

Kansas CityBuenos Aires

MCI - EZE

MCIEZE

Kansas City

Thu 12/11

5:12 pm-2:55 pm

2 stops18h 43m

Buenos Aires Ministro Pistarini

Sat 12/27

8:00 am-11:57 pm

2 stops18h 57m

$1,075

Kansas CityBuenos Aires

MCI - EZE

MCIEZE

Kansas City

Wed 10/29

10:35 am-6:20 am

1 stop17h 45m

Buenos Aires Ministro Pistarini

Wed 11/5

11:55 pm-4:38 pm

1 stop19h 43m

$1,100

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 54 results
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Best time to book a flight from Missouri to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Missouri with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Missouri to Buenos Aires

What is the cheapest time of day to fly from MO to BUE?

Find hourly flight availability from Missouri to Buenos Aires. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Missouri to Buenos Aires as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Missouri to Buenos Aires. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Missouri to Buenos Aires?

    Departing from Missouri to Buenos Aires will take you 18h 40m. The distance from Missouri to Buenos Aires is about 5472 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Missouri to Buenos Aires?

    The most popular route from Missouri to Buenos Aires is Kansas City - Buenos Aires Ministro Pistarini. You may also consider Lambert-St Louis - Buenos Aires Ministro Pistarini or Lambert-St Louis - Buenos Aires Jorge Newbery.

  • Can I find deals for flights from Missouri to Buenos Aires that include hotel bookings?

    Yes. In addition to deals on Missouri to Buenos Aires flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Missouri to Buenos Aires?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missouri to Buenos Aires.

  • Can I find deals for business class flights from Missouri to Buenos Aires?

    Yes. Cheapflights offers flight deals from Missouri to Buenos Aires by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Missouri to Buenos Aires?

    Currently, April is the cheapest month in which you can book a flight from Missouri to Buenos Aires (average of $795). Flying from Missouri to Buenos Aires in December is currently the most expensive (average of $1,260). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Missouri to Buenos Aires

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Ministro Pistarini flights
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Dallas/Fort Worth to Jorge Newbery flights
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Seattle to Jorge Newbery flights
Atlanta to Jorge Newbery flights
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Orlando to Jorge Newbery flights
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Top 3 airlines flying from Missouri to Buenos Aires

Discover the top 3 airlines that operate flights from Missouri to Buenos Aires. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$1,023Average$1,415FlexibilityNo cancel feeOn-time71%
DeltaCheapest$1,023Average$1,282FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$1,053Average$1,191FlexibilityNo cancel feeOn-time69%

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