$272 Cheap Flights from Washington (IAD) to Buenos Aires (EZE)

View $272 flight on Thu, Dec 25, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Ministro Pistarini Intl. Airport (EZE)

Cheap Flights from Washington to Buenos Aires (IAD-EZE)

Prices were available within the past 7 days and start at $272 for one-way flights and $628 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Copa
Wed, Sep 9 - Wed, Sep 16
IAD
Washington
EZE
Buenos Aires
$628 Roundtrip, found 1 hour ago
$628
Roundtrip
found 1 hour ago
Select Copa flight, departing Wed, Sep 9 from Washington to Buenos Aires, returning Wed, Sep 16, priced at $628 found 1 hour ago
American Airlines
Mon, Jan 12 - Mon, Feb 9
IAD
Washington
EZE
Buenos Aires
$640 Roundtrip, found 1 hour ago
$640
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Mon, Jan 12 from Washington to Buenos Aires, returning Mon, Feb 9, priced at $640 found 1 hour ago
Delta
Mon, Feb 2 - Tue, Feb 10
IAD
Washington
EZE
Buenos Aires
$640 Roundtrip, just found
$640
Roundtrip
just found
Select Delta flight, departing Mon, Feb 2 from Washington to Buenos Aires, returning Tue, Feb 10, priced at $640 just found
United
Sun, Nov 23 - Thu, Nov 27
IAD
Washington
EZE
Buenos Aires
$640 Roundtrip, just found
$640
Roundtrip
just found
Select United flight, departing Sun, Nov 23 from Washington to Buenos Aires, returning Thu, Nov 27, priced at $640 just found
American Airlines
Tue, Nov 25 - Tue, Dec 2
IAD
Washington
EZE
Buenos Aires
$644 Roundtrip, found 1 hour ago
$644
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Tue, Nov 25 from Washington to Buenos Aires, returning Tue, Dec 2, priced at $644 found 1 hour ago
Delta
Sun, Dec 7 - Sun, Dec 21
IAD
Washington
EZE
Buenos Aires
$647 Roundtrip, found 1 day ago
$647
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, Dec 7 from Washington to Buenos Aires, returning Sun, Dec 21, priced at $647 found 1 day ago
Copa
Tue, Mar 31 - Tue, Apr 7
IAD
Washington
EZE
Buenos Aires
$648 Roundtrip, just found
$648
Roundtrip
just found
Select Copa flight, departing Tue, Mar 31 from Washington to Buenos Aires, returning Tue, Apr 7, priced at $648 just found
United
Mon, Jan 12 - Mon, Feb 9
IAD
Washington
EZE
Buenos Aires
$648 Roundtrip, found 1 hour ago
$648
Roundtrip
found 1 hour ago
Select United flight, departing Mon, Jan 12 from Washington to Buenos Aires, returning Mon, Feb 9, priced at $648 found 1 hour ago
American Airlines
Sun, Nov 16 - Wed, Dec 3
IAD
Washington
EZE
Buenos Aires
$650 Roundtrip, found 9 hours ago
$650
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Sun, Nov 16 from Washington to Buenos Aires, returning Wed, Dec 3, priced at $650 found 9 hours ago
LATAM Airlines Group
Tue, Nov 25 - Thu, Dec 11
IAD
Washington
EZE
Buenos Aires
$664 Roundtrip, found 3 days ago
$664
Roundtrip
found 3 days ago
Select LATAM Airlines Group flight, departing Tue, Nov 25 from Washington to Buenos Aires, returning Thu, Dec 11, priced at $664 found 3 days ago

Find the cheapest month to fly from Washington (IAD) to Buenos Aires (EZE)

August is typically the cheapest month to fly

From $503 - $988 per traveler.

Alternative airports near Buenos Aires

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

Select flight to Aeroparque Jorge Newbery AEP. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $670
AEP
Aeroparque Jorge Newbery
CheapestClosest
Average driving time to city center11 min
Flights from $670
Flights from Washington (IAD) to Buenos Aires (EZE)
Origin airport
Washington Dulles Intl.
Destination airport
Ministro Pistarini Intl.
Airlines serving
Air Canada, American Airlines, Copa, Delta, LATAM Airlines Group, United, avianca
Roundtrip price
$627
Distance
5237 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 September. 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 $272 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 Washington Dulles Intl. Airport (IAD) to Ministro Pistarini Intl. Airport (EZE) cost?
Lock in a cheap one-way flight from $272 or cheap return flight from $628 from Washington Dulles Intl. Airport (IAD) to Ministro Pistarini Intl. Airport (EZE) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Ministro Pistarini Intl. Airport (EZE)?
Flying in September is a great way to save, as it's the cheapest month for flights between IAD and EZE. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Ministro Pistarini Intl. Airport (EZE)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest IAD to EZE flight.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Ministro Pistarini Intl. Airport (EZE)?
There aren't any daily direct flights departing from Washington Dulles Intl. Airport (IAD) to Ministro Pistarini Intl. Airport (EZE). But you can choose flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from IAD to EZE?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary based on a number of factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Ministro Pistarini Intl. Airport (EZE)?
Opt for a flight from Washington Dulles Intl. Airport (IAD) to Ministro Pistarini Intl. Airport (EZE) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this 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 Washington Dulles Intl. Airport (IAD) to Ministro Pistarini Intl. Airport (EZE) last-minute?
Booking your plane ticket from IAD to EZE just before your getaway is typically more expensive. However, if there's some wiggle room with your departure dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book an IAD to EZE flight and hotel package?
You can save money by booking an IAD to EZE flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. After selecting your preferred flights and accommodations, consider adding extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Ministro Pistarini Intl. Airport (EZE)?
In most cases, you can cancel or modify your IAD to EZE flight. However, there may be additional fees, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you need more details, go to our Customer Service portal.

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*Available to One Key members.