$285 Cheap Flights from Washington (DCA) to Buenos Aires (AEP)

View $285 flight on Fri, Sep 18, 2026Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Buenos Aires (AEP-Aeroparque Jorge Newbery)

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Cheap Flights from Washington to Buenos Aires (DCA-AEP)

Prices were available within the past 7 days and start at $285 for one-way flights and $665 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

LATAM Airlines Group
Fri, Nov 28 - Thu, Dec 4
DCA
Washington
AEP
Buenos Aires
$665 Roundtrip, found 3 days ago
$665
Roundtrip
found 3 days ago
Select LATAM Airlines Group flight, departing Fri, Nov 28 from Washington to Buenos Aires, returning Thu, Dec 4, priced at $665 found 3 days ago
LATAM Airlines Group
Fri, Sep 4 - Thu, Sep 10
DCA
Washington
AEP
Buenos Aires
$670 Roundtrip, found 9 hours ago
$670
Roundtrip
found 9 hours ago
Select LATAM Airlines Group flight, departing Fri, Sep 4 from Washington to Buenos Aires, returning Thu, Sep 10, priced at $670 found 9 hours ago
LATAM Airlines Group
Sun, Jul 26 - Thu, Aug 27
DCA
Washington
AEP
Buenos Aires
$670 Roundtrip, found 5 days ago
$670
Roundtrip
found 5 days ago
Select LATAM Airlines Group flight, departing Sun, Jul 26 from Washington to Buenos Aires, returning Thu, Aug 27, priced at $670 found 5 days ago
LATAM Airlines Group
Wed, Jan 21 - Wed, Feb 4
DCA
Washington
AEP
Buenos Aires
$695 Roundtrip, found 3 days ago
$695
Roundtrip
found 3 days ago
Select LATAM Airlines Group flight, departing Wed, Jan 21 from Washington to Buenos Aires, returning Wed, Feb 4, priced at $695 found 3 days ago
Delta
Fri, Nov 7 - Tue, Nov 11
DCA
Washington
AEP
Buenos Aires
$722 Roundtrip, found 4 days ago
$722
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Nov 7 from Washington to Buenos Aires, returning Tue, Nov 11, priced at $722 found 4 days ago
LATAM Airlines Group
Fri, Jan 23 - Mon, Feb 9
DCA
Washington
AEP
Buenos Aires
$727 Roundtrip, found 3 days ago
$727
Roundtrip
found 3 days ago
Select LATAM Airlines Group flight, departing Fri, Jan 23 from Washington to Buenos Aires, returning Mon, Feb 9, priced at $727 found 3 days ago
JetBlue Airways
Fri, May 15 - Sun, May 24
DCA
Washington
AEP
Buenos Aires
$731 Roundtrip, found 19 hours ago
$731
Roundtrip
found 19 hours ago
Select JetBlue Airways flight, departing Fri, May 15 from Washington to Buenos Aires, returning Sun, May 24, priced at $731 found 19 hours ago
LATAM Airlines Group
Mon, May 4 - Mon, May 25
DCA
Washington
AEP
Buenos Aires
$741 Roundtrip, just found
$741
Roundtrip
just found
Select LATAM Airlines Group flight, departing Mon, May 4 from Washington to Buenos Aires, returning Mon, May 25, priced at $741 just found
LATAM Airlines Group
Sun, Jan 18 - Wed, Feb 4
DCA
Washington
AEP
Buenos Aires
$752 Roundtrip, found 3 days ago
$752
Roundtrip
found 3 days ago
Select LATAM Airlines Group flight, departing Sun, Jan 18 from Washington to Buenos Aires, returning Wed, Feb 4, priced at $752 found 3 days ago
Air Canada
Wed, Apr 1 - Wed, Apr 8
DCA
Washington
AEP
Buenos Aires
$1,497 Roundtrip, found 2 days ago
$1,497
Roundtrip
found 2 days ago
Select Air Canada flight, departing Wed, Apr 1 from Washington to Buenos Aires, returning Wed, Apr 8, priced at $1,497 found 2 days ago

Alternative airports near Buenos Aires

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ministro Pistarini Intl. EZE. Average driving time to city center is 25 minutes. Flights from $697
EZE
Ministro Pistarini Intl.
Average driving time to city center25 min
Flights from $697
Flights from Washington (DCA) to Buenos Aires (AEP)
Origin airport
Ronald Reagan Washington National
Destination airport
Aeroparque Jorge Newbery
Airlines serving
Air Canada, LATAM Airlines Group
Roundtrip price
$664
Distance
5209 mi

Washington to Buenos Aires Flights

The cheapest times to fly from Washington to Buenos Aires

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Buenos Aires are during the month of November. You can find some of the cheapest flights from Washington to Buenos Aires with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Buenos Aires

Sunday is one of the best days to book for cheap flights from Washington to Buenos Aires: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Buenos Aires

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Buenos Aires in 2025. You can also book with separate airlines for your outbound and return journeys, from $285 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Buenos Aires flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Buenos Aires airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Ronald Reagan Washington National Airport (DCA) to Aeroparque Jorge Newbery Airport (AEP) cost?
Secure a cheap one-way flight from $285 or cheap return flight from $665 from Ronald Reagan Washington National Airport (DCA) to Aeroparque Jorge Newbery Airport (AEP) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Ronald Reagan Washington National Airport (DCA) to Aeroparque Jorge Newbery Airport (AEP)?
November is the most affordable month to fly from DCA to AEP. Traveling outside of peak seasons is often the key to finding better fares.
What is the cheapest airline that flies from Ronald Reagan Washington National Airport (DCA) to Aeroparque Jorge Newbery Airport (AEP)?
To find the cheapest airline that'll fly you from DCA to AEP, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Aeroparque Jorge Newbery Airport (AEP)?
Direct flights from Ronald Reagan Washington National Airport (DCA) to Aeroparque Jorge Newbery Airport (AEP) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from DCA to AEP?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to Aeroparque Jorge Newbery Airport (AEP)?
Choose a flight from Ronald Reagan Washington National Airport (DCA) to Aeroparque Jorge Newbery Airport (AEP) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Ronald Reagan Washington National Airport (DCA) to Aeroparque Jorge Newbery Airport (AEP) last-minute?
Last-minute bookings from DCA to AEP are generally more expensive. For the cheapest rates, start searching for flights early. That said, if you're flexible with your travel dates, it's possible to land a cheap fare right before your trip.
Is it cheaper to book a DCA to AEP flight and hotel package?
You'll generally save money by securing a DCA to AEP flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. Once you've selected your preferred accommodations and flights, consider other add-ons like car rentals, activities and tours.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Aeroparque Jorge Newbery Airport (AEP)?
Typically, you can modify or cancel your DCA to AEP flight. However, there may be additional charges, especially if your booking was made over 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you want further details, visit our Customer Service portal.

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*Available to One Key members.