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Buenos Aires

$368+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
MCI — BUE
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This United Airlines deal was found by Cheapflights users on 12/15. 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.
Mon 12/226:00 amMCI - EZE
2 stops22h 20mUnited Airlines
Mon 12/2910:05 pmEZE - MCI
2 stops22h 36mUnited Airlines
Deal found 12/15$1,220
This Delta deal was found by Cheapflights users on 12/15. 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.
Mon 12/223:35 pmMCI - EZE
1 stop14h 25mDelta
Mon 12/2911:55 pmEZE - MCI
1 stop17h 55mDelta
Deal found 12/15$1,416
This Mytrip deal was found by Cheapflights users on 12/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:15 pmMCI - EZE
3 stops31h 20mMultiple Airlines
Wed 12/319:15 pmEZE - MCI
2 stops28h 44mMultiple Airlines
Deal found 12/16$1,530
This LATAM Airlines deal was found by Cheapflights users on 12/16. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:22 pmSTL - EZE
1 stop14h 58mLATAM Airlines
Fri 1/28:55 pmEZE - STL
1 stop18h 08mLATAM Airlines
Deal found 12/16$1,576
This LATAM Airlines deal was found by Cheapflights users on 12/15. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1911:49 amSTL - EZE
1 stop16h 31mDelta
Sun 12/218:55 pmEZE - STL
1 stop18h 26mDelta
Deal found 12/15$1,610
This Mytrip deal was found by Cheapflights users on 12/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/286:15 pmMCI - AEP
3 stops31h 25mMultiple Airlines
Wed 12/3110:55 pmAEP - MCI
3 stops27h 04mMultiple Airlines
Deal found 12/16$1,632
This FlightHub deal was found by Cheapflights users on 12/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:00 amSTL - EZE
2 stops33h 43mLATAM Airlines
Sun 12/218:00 amEZE - STL
2 stops18h 42mLATAM Airlines
Deal found 12/15$1,682
This United Airlines deal was found by Cheapflights users on 12/15. 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.
Fri 12/196:30 amSTL - EZE
2 stops23h 50mUnited Airlines
Sun 12/2110:05 pmEZE - STL
2 stops27h 38mUnited Airlines
Deal found 12/15$1,699
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Sun 12/284:40 pmMCI - EZE
1 stop35h 40mUnited Airlines
Wed 12/3111:55 pmEZE - MCI
2 stops24h 55mUnited Airlines
Deal found 12/16$1,833
This KAYAK deal was found by Cheapflights users on 12/16. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/288:00 amMCI - AEP
3 stops24h 45mLATAM Airlines
Wed 12/316:20 pmAEP - MCI
2 stops20h 12mLATAM Airlines
Deal found 12/16$1,861
This LATAM Airlines deal was found by Cheapflights users on 12/15. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/199:30 amSTL - AEP
3 stops23h 15mLATAM Airlines
Sun 12/216:20 pmAEP - STL
2 stops21h 01mLATAM Airlines
Deal found 12/15$2,094
This Priceline deal was found by Cheapflights users on 12/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2212:48 pmMCI - AEP
2 stops22h 12mLATAM Airlines
Mon 12/2911:30 amAEP - MCI
2 stops27h 17mLATAM Airlines
Deal found 12/15$2,158

Find 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$936
(KAYAK)

One-way from

$368
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$1,361
Provider with most accurate pricing for Lambert-St Louis-Buenos Aires (BUE) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Buenos Aires (BUE) flights.
Search Deals
From Missouri to Buenos Aires (BUE)
Search Deals
One-way flight from Missouri to Buenos Aires (BUE)
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 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 - AEP

STLAEP

Lambert-St Louis

Tue 3/10

5:00 pm-4:00 pm

2 stops21h 00m

Buenos Aires Jorge Newbery

Wed 3/25

3:40 pm-8:52 am

2 stops19h 12m

$936

Kansas CityBuenos Aires

MCI - EZE

MCIEZE

Kansas City

Mon 3/2

1:23 pm-9:00 am

1 stop16h 37m

Buenos Aires Ministro Pistarini

Mon 3/9

8:55 pm-12:10 pm

1 stop17h 15m

$936

Kansas CityBuenos Aires

MCI - AEP

MCIAEP

Kansas City

Mon 3/2

1:23 pm-4:00 pm

2 stops23h 37m

Buenos Aires Jorge Newbery

Mon 3/9

5:15 pm-12:10 pm

2 stops20h 55m

$936

St. LouisBuenos Aires

STL - EZE

STLEZE

Lambert-St Louis

Sun 3/8

7:41 am-8:20 am

2 stops46h 39m

Buenos Aires Ministro Pistarini

Tue 3/17

9:05 pm-9:21 am

1 stop14h 16m

$956

Kansas CityBuenos Aires

MCI - AEP

MCIAEP

Kansas City

Sat 4/18

6:00 am-7:40 am

3 stops23h 40m

Buenos Aires Jorge Newbery

Sat 4/25

5:10 pm-11:07 am

2 stops19h 57m

$971

Kansas CityBuenos Aires

MCI - EZE

MCIEZE

Kansas City

Sat 4/18

6:00 am-6:20 am

3 stops22h 20m

Buenos Aires Ministro Pistarini

Sat 4/25

5:36 am-11:07 am

3 stops31h 31m

$1,001

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Sun 3/8

6:59 pm-5:00 pm

2 stops20h 01m

Buenos Aires Jorge Newbery

Tue 3/17

6:20 pm-11:45 am

2 stops19h 25m

$1,013

St. LouisBuenos Aires

STL - AEP

STLAEP

Lambert-St Louis

Wed 5/27

11:51 am-7:40 am

2 stops17h 49m

Buenos Aires Jorge Newbery

Mon 6/8

5:05 pm-10:45 am

2 stops19h 40m

$1,018

Kansas CityBuenos Aires

MCI - EZE

MCIEZE

Kansas City

Tue 2/10

9:57 am-10:15 am

1 stop21h 18m

Buenos Aires Ministro Pistarini

Wed 2/18

8:55 pm-12:16 pm

1 stop18h 21m

$1,018

Kansas CityBuenos Aires

MCI - EZE

MCIEZE

Kansas City

Tue 2/10

7:00 am-9:00 am

1 stop23h 00m

Buenos Aires Ministro Pistarini

Wed 2/18

8:55 pm-3:59 pm

1 stop22h 04m

$1,026

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 49 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 December 18, 2025.

It’s typically best to fly out from Missouri to Buenos Aires in the morning. Doing so could potentially save you 3% on the flight price compared to flying in the afternoon, which is usually more expensive.

How much does it cost to fly round-trip from Missouri to Buenos Aires?

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 16h 37m. The distance from Missouri to Buenos Aires is about 5614 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 Lambert-St Louis - Buenos Aires Ministro Pistarini. You may also consider Kansas City - 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.

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.
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Top airline flying from Missouri to Buenos Aires

Discover the top airline 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$1,025Average$1,283FlexibilityNo cancel feeOn-timeN/A

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