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$271+ Cheap flights from Baltimore (BWI) 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — BUE
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap flight deals from Baltimore to Buenos Aires

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to Buenos Aires (BUE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$640
(United Airlines)

One-way from

$271
(United Airlines)

Popular in

December

Cheapest in

October

Average price

$703
Provider with most accurate pricing for Baltimore/Washington-Buenos Aires (BUE) flight deals.
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Provider most trusted by Cheapflights users for Baltimore/Washington-Buenos Aires (BUE) flights.
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From Baltimore/Washington to Buenos Aires (BUE)
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One-way flight from Baltimore/Washington to Buenos Aires (BUE)
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Highest demand for flights based on searches. 32% potential increase in price ($548 potential increase over avg. RT price).
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Cheapest flight prices on average. 12% potential price decrease ($130 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from Baltimore to Buenos Aires

Cheapest flights from Baltimore to Buenos Aires
Explore the most affordable flight options available from Baltimore to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Copa Airlines deal was found by Cheapflights users on 10/28. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/23:42 pmBWI - EZE
1 stop14h 17mCopa Airlines
Sun 11/92:15 amEZE - BWI
1 stop13h 54mCopa Airlines
Deal found 10/28$628
This United Airlines deal was found by Cheapflights users on 10/29. 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 11/312:35 pmBWI - EZE
1 stop16h 45mUnited Airlines
Sun 11/1610:05 pmEZE - BWI
1 stop15h 27mUnited Airlines
Deal found 10/29$640
This American Airlines deal was found by Cheapflights users on 10/28. 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.
Sun 11/23:17 pmBWI - EZE
1 stop14h 53mAmerican Airlines
Mon 11/1011:59 pmEZE - BWI
2 stops20h 29mAmerican Airlines
Deal found 10/28$644
This KAYAK deal was found by Cheapflights users on 10/27. 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.
Wed 11/2612:15 pmBWI - AEP
2 stops19h 25mLATAM Airlines
Wed 12/36:20 pmAEP - BWI
2 stops17h 52mLATAM Airlines
Deal found 10/27$646
This Delta deal was found by Cheapflights users on 10/28. 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 11/244:49 pmBWI - EZE
1 stop14h 11mDelta
Tue 12/28:55 pmEZE - BWI
1 stop16h 16mDelta
Deal found 10/28$646
This United Airlines deal was found by Cheapflights users on 10/28. 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 11/76:16 pmBWI - EZE
1 stop35h 04mUnited Airlines
Mon 11/1011:55 pmEZE - BWI
1 stop24h 46mUnited Airlines
Deal found 10/28$648
This Delta deal was found by Cheapflights users on 10/28. 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 11/36:22 pmBWI - EZE
1 stop12h 38mDelta
Mon 11/1710:25 pmEZE - BWI
2 stops19h 19mDelta
Deal found 10/28$650
This Cheapflightsfares deal was found by Cheapflights users on 10/27. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/54:49 pmBWI - EZE
2 stops20h 06mLATAM Airlines
Mon 12/84:05 amEZE - BWI
2 stops31h 13mLATAM Airlines
Deal found 10/27$694
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Sat 11/293:42 pmBWI - EZE
1 stop14h 17mCopa Airlines
Sat 12/62:15 amEZE - BWI
1 stop13h 55mCopa Airlines
Deal found 10/27$697
This Delta deal was found by Cheapflights users on 10/28. 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.
Fri 11/71:41 pmBWI - EZE
1 stop17h 19mDelta
Mon 11/108:55 pmEZE - BWI
1 stop20h 49mDelta
Deal found 10/28$700
This SmartFares deal was found by Cheapflights users on 10/27. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/21:52 pmBWI - EZE
2 stops17h 43mLATAM Airlines
Tue 12/1611:00 amEZE - BWI
2 stops26h 11mLATAM Airlines
Deal found 10/27$708
This United Airlines deal was found by Cheapflights users on 10/28. 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 10/296:00 amBWI - EZE
1 stop23h 20mUnited Airlines
Wed 11/510:05 pmEZE - BWI
1 stop15h 27mUnited Airlines
Deal found 10/28$711

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore 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 October 29, 2025.
Use the filters below to find and compare flights from Baltimore to Buenos Aires that are best for you.

Fly from

Baltimore

Fly to

Buenos Aires

Route

Depart

Return

Price

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Wed 11/19

6:00 am-7:20 am

1 stop23h 20m

Buenos Aires Ministro Pistarini

Tue 12/2

11:55 pm-4:15 pm

1 stop18h 20m

$640

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Tue 11/18

6:00 am-9:20 am

1 stop25h 20m

Buenos Aires Ministro Pistarini

Thu 12/4

10:05 pm-4:15 pm

1 stop20h 10m

$640

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Sat 11/8

6:00 am-7:20 am

1 stop23h 20m

Buenos Aires Ministro Pistarini

Sat 11/15

11:55 pm-4:02 pm

1 stop18h 07m

$640

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Tue 12/2

3:56 pm-9:20 am

1 stop15h 24m

Buenos Aires Ministro Pistarini

Tue 12/16

11:55 pm-10:25 pm

1 stop24h 30m

$640

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Wed 11/19

6:00 am-7:20 am

1 stop23h 20m

Buenos Aires Ministro Pistarini

Thu 12/4

10:05 pm-4:15 pm

1 stop20h 10m

$640

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Thu 11/6

6:00 am-7:20 am

1 stop23h 20m

Buenos Aires Ministro Pistarini

Sun 11/9

10:05 pm-11:32 am

1 stop15h 27m

$640

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Thu 11/6

6:00 am-9:20 am

1 stop25h 20m

Buenos Aires Ministro Pistarini

Wed 11/12

11:55 pm-4:02 pm

1 stop18h 07m

$640

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Sun 11/9

6:00 am-9:20 am

1 stop25h 20m

Buenos Aires Ministro Pistarini

Sun 11/16

11:55 pm-4:02 pm

1 stop18h 07m

$640

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Mon 11/3

6:00 am-7:20 am

1 stop23h 20m

Buenos Aires Ministro Pistarini

Sun 11/16

10:05 pm-11:32 am

1 stop15h 27m

$640

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Mon 11/3

12:35 pm-9:20 am

1 stop18h 45m

Buenos Aires Ministro Pistarini

Mon 11/17

11:55 pm-4:02 pm

1 stop18h 07m

$640

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 39 results
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Compare providers for flights from Baltimore to Buenos Aires

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Baltimore to Buenos Aires in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Baltimore-Buenos Aires flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Baltimore-Buenos Aires flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Baltimore-Buenos Aires flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Baltimore-Buenos Aires flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Baltimore-Buenos Aires flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Baltimore to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Baltimore 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 Baltimore to Buenos Aires

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

Currently, March is the cheapest month in which you can book a flight from Baltimore to Buenos Aires (average of $278). Flying from Baltimore to Buenos Aires in February is currently the most expensive (average of $725). 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.

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

Find hourly flight availability from Baltimore 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 October 29, 2025.

It’s typically best to fly out from Baltimore to Buenos Aires at noon. Doing so could potentially save you 20% on the flight price compared to flying in the morning, which is usually more expensive.

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

Reviews of airlines servicing Buenos Aires

Get insights into the airlines that provide service to Buenos Aires. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buenos Aires. Reviews last updated October 29, 2025.
Read reviews from past customers who have flown Delta, Copa Airlines, and LATAM Airlines from Baltimore to Buenos Aires. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,992 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,992 reviews
Delta
7.9
Good
7,992 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Copa Airlines
7.6
Good
1,563 reviews
Delta
7.9
Good
7,992 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
LATAM Airlines
7.5
Good
1,871 reviews
Delta
7.9
Good
7,992 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
9,001 reviews
Delta
7.9
Good
7,992 reviews

Overall

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.3

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Related info for your journey

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

  • What airport do you fly from for flights from Baltimore to Buenos Aires?

    Located just 8.5 mi from the city center, Baltimore/Washington is the airport most travelers will use when flying to Buenos Aires from Baltimore. Booking flights from Baltimore/Washington (BWI) to Buenos Aires should be relatively easy as there are 0 daily outbound flights to Buenos Aires from 4 different airlines.

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

    Airlines like United Airlines and LATAM Airlines fly from Baltimore to Buenos Aires in about 23h 20m. The time it takes to get you to your destination can typically vary by up to 4h 12m. The distance between Baltimore and Buenos Aires is about 5239 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Baltimore to Buenos Aires round-trip?

    According to our current data, Delta ($629), United Airlines ($629), and American Airlines ($653) offers the cheapest pricing from Baltimore to Buenos Aires. Delta is 45% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Baltimore to Buenos Aires one-way?

    One-way options have recently been found by users for as low as $271 on United Airlines. Other airlines that offer cheap prices include American Airlines from $275 and LATAM Airlines from $278 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Baltimore 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 Baltimore to Buenos Aires?

    Currently, March is the cheapest month in which you can book a flight from Baltimore to Buenos Aires (average of $278). Flying from Baltimore to Buenos Aires in February is currently the most expensive (average of $725). 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 Baltimore to Buenos Aires

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Baltimore to Buenos Aires

Discover the top 4 airlines that operate flights from Baltimore 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$629Average$769FlexibilityNo cancel feeOn-time69%
DeltaCheapest$629Average$1,012FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$653Average$1,188FlexibilityNo cancel feeOn-time71%
Copa AirlinesCheapest$688Average$818FlexibilityNo cancel feeOn-time70%

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