Buenos Aires

$259+ Cheap flights from Washington, D.C. (WAS) 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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BUE
Jun 17 — Jun 241
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Cheapflights Tip: The best prices from Washington, D.C. to Buenos Aires are usually found in May or September, booked 50 days in advance, depart on a Monday or Tuesday and return on a Thursday

Cheap flight deals from Washington, D.C. to Buenos Aires

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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 June 12, 2025.

Round-trip from

$628
(Priceline)

One-way from

$259
(FlightHub)

Popular in

December

Cheapest in

May

Average price

$960
From Washington, D.C. (WAS) to Buenos Aires (BUE)
One-way flight from Washington, D.C. (WAS) to Buenos Aires (BUE)
Highest demand for flights based on searches. 16% potential increase in price ($192 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($43 potential savings vs. average RT price).
Average for round-trip flights in June 2025

Find flight deals from Washington, D.C. to Buenos Aires

Cheapest flights from Washington, D.C. to Buenos Aires
Explore the most affordable flight options available from Washington, D.C. to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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.
Sat 6/144:45 pmBWI - AEP
2 stops20h 55mLATAM Airlines
Sun 6/225:00 pmAEP - BWI
2 stops18h 52mLATAM Airlines
Deal found 6/11$624
This Priceline deal was found by Cheapflights users on 6/10. 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 10/135:45 amIAD - EZE
2 stops17h 25mAvianca
Thu 10/231:40 amEZE - IAD
2 stops26h 05mAvianca
Deal found 6/10$628
This LATAM Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 11/43:00 pmIAD - AEP
2 stops21h 40mLATAM Airlines
Mon 11/246:10 pmAEP - IAD
2 stops21h 47mLATAM Airlines
Deal found 6/11$629
This Delta deal was found by Cheapflights users on 6/11. 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 8/195:25 pmIAD - EZE
1 stop15h 20mDelta
Fri 8/298:10 pmEZE - IAD
1 stop19h 21mDelta
Deal found 6/11$629
This LATAM Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 11/41:55 pmDCA - AEP
3 stops18h 35mLATAM Airlines
Thu 11/205:10 pmAEP - DCA
2 stops19h 44mLATAM Airlines
Deal found 6/11$629
This Delta deal was found by Cheapflights users on 6/11. 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 8/191:40 pmDCA - EZE
1 stop19h 05mDelta
Fri 8/298:10 pmEZE - DCA
1 stop17h 30mDelta
Deal found 6/11$629
This Gotogate deal was found by Cheapflights users on 6/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/247:00 amIAD - AEP
1 stop21h 40mAvianca
Tue 9/307:00 amAEP - IAD
2 stops20h 45mAvianca
Deal found 6/11$631
This Justfly.com deal was found by Cheapflights users on 6/11. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1912:13 pmIAD - EZE
2 stops22h 44mLATAM Airlines
Thu 10/27:40 amEZE - IAD
2 stops17h 27mLATAM Airlines
Deal found 6/11$634
This Copa Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 7/89:32 amIAD - EZE
1 stop17h 40mCopa Airlines
Tue 7/292:32 pmEZE - IAD
1 stop14h 48mCopa Airlines
Deal found 6/10$637
This Justfly.com deal was found by Cheapflights users on 6/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/303:55 pmDCA - EZE
2 stops24h 50mLATAM Airlines
Mon 12/87:35 pmEZE - DCA
2 stops19h 22mLATAM Airlines
Deal found 6/10$644
This Delta deal was found by Cheapflights users on 6/10. 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.
Wed 8/206:25 pmBWI - EZE
1 stop14h 20mDelta
Thu 8/287:40 amEZE - BWI
2 stops17h 41mDelta
Deal found 6/10$649
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 8/2510:25 amIAD - EZE
2 stops22h 50mAmerican Airlines
Fri 9/58:30 pmEZE - IAD
2 stops27h 19mAmerican Airlines
Deal found 6/11$654

Cheapflights Fare Finder

Customize your flight search to find flights from Washington, D.C. 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 June 12, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Buenos Aires that are best for you.

Fly from

Washington, D.C.

Fly to

Buenos Aires

Route

Depart

Return

Price

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Mon 8/18

7:30 pm-6:35 pm

2 stops22h 05m

Buenos Aires Jorge Newbery

Thu 8/28

3:40 pm-11:23 am

2 stops20h 43m

$629

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Tue 8/19

5:25 pm-9:45 am

1 stop15h 20m

Buenos Aires Ministro Pistarini

Fri 8/29

8:10 pm-2:31 pm

1 stop19h 21m

$629

Washington, D.C.Buenos Aires

DCA - AEP

DCAAEP

Washington, D.C. Reagan-National

Mon 8/18

2:59 pm-4:05 pm

2 stops24h 06m

Buenos Aires Jorge Newbery

Tue 8/26

8:10 pm-2:04 pm

2 stops18h 54m

$629

Washington, D.C.Buenos Aires

DCA - EZE

DCAEZE

Washington, D.C. Reagan-National

Tue 8/19

1:40 pm-9:45 am

1 stop19h 05m

Buenos Aires Ministro Pistarini

Fri 8/29

8:10 pm-12:40 pm

1 stop17h 30m

$629

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Tue 8/19

12:13 pm-11:57 am

2 stops22h 44m

Buenos Aires Ministro Pistarini

Thu 10/2

7:40 am-12:07 am

2 stops17h 27m

$634

Washington, D.C.Buenos Aires

IAD - AEP

IADAEP

Washington, D.C. Dulles Intl

Fri 8/22

7:00 am-5:40 am

1 stop21h 40m

Buenos Aires Jorge Newbery

Tue 9/2

7:00 am-5:35 am

1 stop23h 35m

$635

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Tue 7/8

9:32 am-4:12 am

1 stop17h 40m

Buenos Aires Ministro Pistarini

Tue 7/29

2:32 pm-4:20 am

1 stop14h 48m

$637

Washington, D.C.Buenos Aires

IAD - EZE

IADEZE

Washington, D.C. Dulles Intl

Wed 8/20

7:00 am-12:10 am

1 stop16h 10m

Buenos Aires Ministro Pistarini

Tue 8/26

1:40 am-2:45 am

2 stops26h 05m

$638

BaltimoreBuenos Aires

BWI - EZE

BWIEZE

Baltimore/Washington

Wed 8/20

4:39 pm-9:45 am

1 stop16h 06m

Buenos Aires Ministro Pistarini

Wed 8/27

8:10 pm-12:30 pm

1 stop17h 20m

$649

BaltimoreBuenos Aires

BWI - AEP

BWIAEP

Baltimore/Washington

Fri 8/22

6:25 pm-7:40 pm

2 stops24h 15m

Buenos Aires Jorge Newbery

Sat 8/30

11:45 am-12:30 pm

2 stops25h 45m

$649

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 59 results
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Best time to book a flight from Washington, D.C. to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Washington, D.C. 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 Washington, D.C. to Buenos Aires

How far ahead should I book a flight from Washington, D.C. to Buenos Aires?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Buenos Aires. Price data was last updated on June 9, 2025.

The best time to book flights from Washington, D.C. to Buenos Aires is 50 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Washington, D.C. to Buenos Aires?

Currently, April is the cheapest month in which you can book a flight from Washington, D.C. to Buenos Aires (average of $795). Flying from Washington, D.C. 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.

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

Find hourly flight availability from Washington, D.C. 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 June 12, 2025.

One of the essential ways to save on airfare from Washington, D.C. to Buenos Aires is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 13% on airfare.

What is the cheapest day to fly from Washington, D.C. to Buenos Aires?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Buenos Aires. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. to Buenos Aires flight should consider departing on Monday mornings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Buenos Aires by month

Plan your trip to Buenos Aires by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Buenos Aires ranges from 2.0 - 3.9 inches per month. January is typically the wettest month, when rainfall can reach 3.9 in. June is typically the driest time to visit Buenos Aires when rainfall is around 2.0 in.

Temperature in Buenos Aires by month

Plan your trip to Buenos Aires by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Buenos Aires, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 51.8 F).

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 June 12, 2025.
To help decide which airline to fly from Washington, D.C. to Buenos Aires, see what other customers have to say about Delta, LATAM Airlines and Copa Airlines. 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.
8.0
Very good

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good
8.0
Very good

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very good

Overall

8.0

Food

7.3

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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 are the cheapest airlines flying from Washington, D.C. to Buenos Aires round-trip?

    According to our current data, Avianca ($628), LATAM Airlines ($629), and Delta ($629) offers the cheapest pricing from Washington, D.C. to Buenos Aires. Avianca is 36% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Washington, D.C. to Buenos Aires one-way?

    The cheapest airline one-way is Avianca, with whom users have recently found tickets for as low as $259. However, be on the lookout for offers from LATAM Airlines and Delta, as they are both options that can get you from Washington, D.C. to Buenos Aires for a low price.

  • What are the most popular routes from Washington, D.C. to Buenos Aires?

  • Where are the most common layover locations when flying from Washington, D.C. to Buenos Aires?

  • What are some popular things to do or see while on a layover in Atlanta?

    Georgia Aquarium, Fox Theatre, and World of Coca-Cola are the most popular attractions in Atlanta if you're in need of something to do during your layover. Georgia Aquarium, Fox Theatre and World of Coca-Cola are located about 8.6 mi, 9.3 mi, and 8.6 mi, respectively from Atlanta Hartsfield-Jackson if you are interested in checking them out. Those landing in Atlanta looking to spend some time exploring during their layover can rent a car for about $52 per day.

  • What are some popular points of interest to see during a layover in Bogotá?

    Bogotá travelers tend to visit Colombian National Museum, Museo Botero, and Jardín botánico de Bogotá more than any other notable places. Colombian National Museum, Museo Botero, and Jardín botánico de Bogotá are located about 8.0 mi, 8.9 mi, and 4.0 mi, respectively from Bogotá El Dorado. Those landing in Bogotá looking to spend some time exploring during their layover can rent a car for about $41 per day.

  • What are points of interest worth seeing during a layover in New York?

    Most New York visitors opt to spend their time at Times Square, New York City Center, and Madison Square Garden. Times Square, New York City Center and Madison Square Garden are located about 13.6 mi, 13.6 mi, and 13.6 mi, respectively from New York John F Kennedy Intl if you are interested in checking them out. Travelers can book a car rental at New York John F Kennedy Intl for about $68 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Washington, D.C. to Buenos Aires flights?

  • Can I find deals for flights from Washington, D.C. to Buenos Aires that include hotel bookings?

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

  • How can I find direct flights from Washington, D.C. to Buenos Aires?

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

  • Can I find deals for business class flights from Washington, D.C. to Buenos Aires?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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 Washington, D.C. to Buenos Aires?

    Currently, April is the cheapest month in which you can book a flight from Washington, D.C. to Buenos Aires (average of $795). Flying from Washington, D.C. 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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Top 6 airlines flying from Washington, D.C. to Buenos Aires

Discover the top 6 airlines that operate flights from Washington, D.C. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$549Average$847FlexibilityNo cancel feeOn-time70%
AviancaCheapest$605Average$925FlexibilityNo cancel feeOn-time71%
American AirlinesCheapest$629Average$1,186FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$629Average$1,091FlexibilityNo cancel feeOn-time69%
DeltaCheapest$629Average$1,144FlexibilityNo cancel feeOn-timeN/A
LATAM AirlinesCheapest$687Average$963FlexibilityNo cancel feeOn-time81%

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