IAD - BUE

$315 Find Cheap Flights from Washington, D.C. to Buenos Aires - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Washington, D.C. to Buenos Aires departing on 9/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Buenos Aires

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Buenos Aires, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Buenos Aires, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$646
Typical prices: $942-$741
LATAM Airlines
Wed 7/8Tue 7/14
IAD - EZE • 2 stops
Cheapest one-way
$315
LATAM Airlines
Wed 9/2
IAD - AEP • 2 stops
Top airlines
Cheapest • from $646 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Washington, D.C. and Buenos Aires. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $635 (round-trip)
Shortest trip • 13h 06m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 29% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Buenos Aires!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Washington, D.C. to Buenos Aires (IAD-BUE)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. to Buenos Aires that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to Buenos Aires

Wed, Jul 8 - Tue, Jul 14
LATAM Airlines Logo
5:46 pm - 6:50 pm
IAD
-
EZE
24h 04m
2 stops
LATAM Airlines Logo
1:10 pm - 11:37 am
EZE
-
IAD
23h 27m
2 stops
$646LATAM Airlines
Tue, Jun 30 - Mon, Jul 6
Copa Airlines Logo
2:22 am - 11:40 pm
IAD
-
EZE
20h 18m
1 stop
Copa Airlines Logo
3:48 am - 4:21 am
EZE
-
IAD
25h 33m
1 stop
$655Copa Airlines
Tue, Jul 7 - Tue, Jul 28
Multiple Airlines Logo
6:30 am - 8:00 am
IAD
-
EZE
24h 30m
1 stop
Multiple Airlines Logo
9:00 pm - 11:28 am
EZE
-
IAD
15h 28m
1 stop
$666Multiple Airlines
Thu, Jul 2 - Mon, Jul 6
Delta Logo
6:00 pm - 9:45 am
IAD
-
EZE
14h 45m
1 stop
Delta Logo
8:10 pm - 9:26 am
EZE
-
IAD
14h 16m
1 stop
$667Delta
Thu, Jul 2 - Fri, Jul 10
Delta Logo
12:29 pm - 9:40 am
IAD
-
EZE
20h 11m
2 stops
Delta Logo
8:10 pm - 12:55 pm
EZE
-
IAD
17h 45m
1 stop
$671Delta
Tue, Jul 7 - Tue, Jul 14
United Airlines Logo
8:40 am - 8:00 am
IAD
-
EZE
22h 20m
1 stop
United Airlines Logo
9:00 pm - 10:43 pm
EZE
-
IAD
26h 43m
1 stop
$676United Airlines
Fri, Jun 26 - Fri, Jul 3
Multiple Airlines Logo
6:30 am - 8:00 am
IAD
-
EZE
24h 30m
1 stop
Multiple Airlines Logo
9:00 pm - 6:50 pm
EZE
-
IAD
22h 50m
1 stop
$680Multiple Airlines
Sun, Jun 21 - Sun, Jun 28
United Airlines Logo
6:30 am - 8:00 am
IAD
-
EZE
24h 30m
1 stop
United Airlines Logo
9:00 pm - 11:28 am
EZE
-
IAD
15h 28m
1 stop
$681United Airlines
Wed, Dec 2 - Sun, Dec 20
Avianca Logo
5:45 am - 5:40 am
IAD
-
AEP
21h 55m
1 stop
Avianca Logo
7:00 am - 1:40 am
AEP
-
IAD
20h 40m
2 stops
$738Avianca
Wed, Oct 7 - Tue, Oct 27
Avianca Logo
6:50 am - 5:40 am
IAD
-
AEP
21h 50m
1 stop
Avianca Logo
7:00 am - 2:40 am
AEP
-
IAD
20h 40m
2 stops
$739Avianca
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Buenos Aires flights

Get data-powered insights and trends into flights from Washington, D.C. to Buenos Aires to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Buenos Aires?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Buenos Aires departing in July.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Buenos Aires?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Buenos Aires, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Buenos Aires is April, where tickets cost $229 (return) on average. On the other hand, the most expensive months are May and August, where the average cost of round-trip tickets is $581 and $398 respectively.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Buenos Aires?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Buenos Aires, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Buenos Aires, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonJune
Cheapest flight$315
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly with an average 54% increase in price.
Flight from Washington, D.C. to Buenos Aires Jorge Newbery

When to book flights from Washington, D.C. to Buenos Aires

Are your dates flexible? Find out the best times to travel from Washington, D.C. to Buenos Aires based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington, D.C. to Buenos Aires flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Buenos Aires?

    In the last 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Buenos Aires was $315 for a one-way ticket and $646 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Buenos Aires?

    Yes, you’ll need a passport to travel to Buenos Aires from Washington, D.C..

  • Which airports will I be using when flying from Washington, D.C. to Buenos Aires?

    Washington, D.C. is served by only 1 airport and there are 2 airports in Buenos Aires. You will leave Washington, D.C. from Washington, D.C. Dulles Intl and you will be arriving in Buenos Aires at one of these airports: Buenos Aires Jorge Newbery or Buenos Aires Ministro Pistarini.

  • Which aircraft models fly most regularly from Washington, D.C. to Buenos Aires?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington, D.C. to Buenos Aires?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Washington, D.C. and Buenos Aires, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Washington, D.C. to Buenos Aires, Delta or Copa Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Buenos Aires are Delta and Copa Airlines. With an average price for the route of $710 and an overall rating of 7.9, Delta is the most popular choice. Copa Airlines is also a great choice for the route, with an average price of $730 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from Washington, D.C. to Buenos Aires?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington, D.C. to Buenos Aires.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. to Buenos Aires?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Buenos Aires from Washington, D.C. is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington, D.C. to Buenos Aires?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Buenos Aires with an airline and back to Washington, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. to Buenos Aires?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Buenos Aires from Washington, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Washington, D.C. to Buenos Aires

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Buenos Aires. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Washington, D.C. to Buenos Aires? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8401 reviews
7.2Food
8.5Crew
8.1Boarding
7.8Comfort
7.8Entertainment
Airline reviews

Five hour delays every hour, I wish it were all at once

2.0 MediocreAnonymous, Jun 2026
MCO - LGA
Read more Delta reviews

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Should never have had to go to Detroit from Orlando back to Tennessee!

Got rerouted from a straight flight from Orlando to Atlanta to Knoxville to a flight from Orlando to Detroit to Knoxville! Seriously!! Flight delay out of Detroit! Long day for what should have been a pretty easy travel day!

Two delays on two separate planes with parts they could not easily find and replace.

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

Flight was great! This flight from Atlanta was even better than when I paid for Comfort from SNA to Atlanta.

I was flying business class, and the French fellow passengers were super noisy. It was not a comfortable flight. And the crew was not helpful.

Entire experience from check in to landing was amazing the flight crew was excellent and friendly. Seats were comfortable.

Friendly crew, good food options, food not the best and seats not as comfy but that’s typical.

Flight got delayed; had to go through security three times.

Seats were awful. Media should have been included for such a long flight.

Horrible. No TV or any type of entertainment on board. Passwnger listening to/watching stuff on their own phone with no headphones making it noise and uncomfortable for everyone else, little/tiny food portions, old seats, useless wifi (cant access anything). Horrible exlerience especially it was a lomg distance flight with kids.

There should be a warning regarding the quality of the aircraft on the website as we reserve the tickets. There was no TV or any type of screen onboard. The wifi they offer is good for nothing. Traveling 9 hours straight with kids and no type of entetainment was horrible. I wish I had been informed prior so I could buy a ticket with another airline. The food was a joke too. A very tiny portion per passenger. They also charged $100 per checked bag. With United I used to pay $60. So, fair to say that I wont be flying Copa anymore. Their aircraft was super old, outdated, no entertainment, with nearly no onboard food.

Very strict carry on rules meant most of the plane had to gate check their luggage. As is often the case had things that were broken because of this, but I appreciated not being charged to gate check. Otherwise good flight and great crew once on the plane

I liked the meatloaf the chicken was awful but the plane was on time and got there and the staff was nice.

Boarding was quick & efficient; they gave boarding groups due priority; staff & air crew were very cordial and helpful, pleasant flight.

Honestly first time flying with delta and it was pretty good. All the process very smooth and crew was always nice and attentive.

Nothing I like, I missed this connection b/c of an earlier flight delay. I had to stay one more night and I paid out my own pocket. LATAM failed to send me to a safe and decent hotel.

It was delayed for 2 hours. Then when we arrived they took us on a very uncomfortable bus and left us there. The bus driver wouldn't let us out because no one from Latam was there. Everything was disaster.

Deleted flight made me loose my connection flight now stuck in Atlanta for a day

Good check in process Poor information on payments at Lima airport

Apart of Sky miles delta. And they go everywhere in Brazil

We traveled with two young children, and it was not possible for our family to be seated together. No one offered help or assistance to organize seating so we could sit with our kids. In the end, we managed to find two seats in Economy so I could at least sit with one of them, even though I had originally paid for Comfort+. In summary, I had to downgrade my seat just to be able to sit with one of my children, which was very disappointing

I booked a flight through Kayak to Brazil I have traveled to Brazil several times before Kayak Delta or LATAM never mentioned during the booking or in the pre flight process that the visa requirements to visit Brazil have changed earlier this year. I was unaware of this change and as such never got a visa and was unable to fly from JFK to Sao Paulo Add to this that Delta allowed me to fly from Boston to JFK which they should not have as I didn’t have a visa. It has been a terrible experience and a huge loss of money

Good flight, boarding ok and crew very nice. Flight was not full so I was able to be very comfortable. Blanket and pillow provided with was good as it was very cold during the flight . Food was very good(small snack sandwich and an excellent piece of orange cake). Overall good flight, no complaints.

Latam may be the worst airline in the world, far worse than even the lowest of low cost airlines in the USA. I wasted hours trying to PAY THEM TO CHECK A BAG! Then they misled me at the terminal, sent me through the wrong security line, the list goes on and on... Just absolutely terrible in every way. Avoid at all costs.

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Our flight was canceled same day and we were never informed. Had to pay more and worse seating on another airline.

Did not like that we couldn't complete check in on-line without providing pictures of our passports. Worry about identity theft. We had no delays and boarding was handled In an efficient manner.

Excellent! I got to Munich and was transferred to my Lufthansa flight quickly, in 15 to 20 minutes, so I did not miss my flight. However, I had checked my overhead bag at the boarding gate in Tampa. That got to Tunis the next day. That is to be expected.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

The airline did not allow enough time for the Columbia checkpoint

This was my first time flying with you guys and my very last! This was the most horrible experience!!! There was not even tv in the plane! How cheap can this airline be!!! I paid so much for my suitcase!!! I would never fly with this airline again! The crew are very rude!

The worst experience I've ever had because the "people" @ Avianca wouldn't let me fly because they said I needed a round trip ticket

Seating was tight. Seats don't recline. Initial flight was cancelled. Lost two days of vacation.

I had bad experiences before now was excellent I am glad they have business class again

Horrible experience with Avianca, they delayed their flight and when we arrived to NYC, AVIANCA took 1 hr y 30 mins to park the airplane and all passenger get off the plane, it made me lost all my trains to get back home and I came back to my place at 3 am instead of 12 am. On the top of that their plane seat are so uncomfortable and is not enough space and killed my legs and knees, Avianca used to be good when it was a Colombian company, now after Brasilian company bought them, their service quality is bad and their flights are delayed and oversold.

It was delayed and I lost my connection flight to Cali and I missed my Mom's funeral

I upgraded to businesses class. Because of that the flight was comfortable.

I actually upgraded to the medium level of seats from basic and even doing that it may have been physically the most uncomfortable flight I have ever had. They packed everyone like is a train to death camp. It was a red eye so I hoped to get some sleep but it was physically impossible to find a comfortable way to rest. I met other folks on the same flight and they said the same thing. It was an utterly miserable flight and if I have any other options I will never fly with them again

Avianca has transitioned from full service legacy airline to "low cost" but has now became a strange hybrid (minimum leg space, started offering business class in domestic flights again, charges passenger for printing boarding pass, etc.). National and international coverage and destinations are really wide but service is not at its best

Everything you need to know for your flight from Washington, D.C. to Buenos Aires

Information on your arrival and departure airports