What are the cheapest airlines flying from Buenos Aires to Washington, D.C. Dulles Intl Airport round-trip?

Cheapflights users have booked flights from Buenos Aires to Washington, D.C. Dulles Intl Airport round-trip from $344. Other airlines that can offer you cheap pricing are Avianca, from $434, and Copa Airlines, from $442. You may be able to fly from Buenos Aires to Washington, D.C. Dulles Intl Airport for 62% less than the average price by searching for these airlines.

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

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

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the most popular airlines that fly from Buenos Aires to Washington, D.C. Dulles Intl Airport?

The most popular airlines flying from Buenos Aires to Washington, D.C. Dulles Intl Airport are Avianca, Copa Airlines and Delta. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from Buenos Aires to Washington, D.C. Dulles Intl Airport?

Wednesday is generally a great day to depart. Flying on this day could help you save up to 33%.

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

To save up to 145% on this flight, we recommend booking at least 41 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Buenos Aires to Washington, D.C. Dulles Intl Airport from $664 1-2 weeks out and tickets from $664 for flights departing within the next 72 hours.

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

Flights from Buenos Aires to Washington, D.C. Dulles Intl Airport lean towards being more expensive in January. Prices are generally better when you fly from Buenos Aires to Washington, D.C. Dulles Intl Airport in April, with the cheapest ticket starting at $296.

Can I find deals for flights from Buenos Aires to Dulles Intl that include hotel bookings?

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

How can I find direct flights from Buenos Aires to Dulles Intl?

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

Can I find deals for business class flights from Buenos Aires to Dulles Intl?

Yes. Cheapflights offers flight deals from Buenos Aires to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$340+ Flights from Buenos Aires to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Buenos Aires to Dulles Intl

Round-trip from	$682 (Kiwi.com)
One-way from	$340 (Kiwi.com)
Popular in	January
Cheapest in	April
Average price	$833

From Buenos Aires (BUE) to Washington, D.C. Dulles Intl

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One-way flight from Buenos Aires (BUE) to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 37% potential increase in price ($543 potential increase over avg. RT price).

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Cheapest flight prices on average. 7% potential price decrease ($68 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Find flight deals from Buenos Aires to Dulles Intl

Cheapest flights from Buenos Aires to Dulles Intl
Explore the most affordable flight options available from Buenos Aires to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Tue 11/41:40 amEZE - IAD

1 stop13h 35mAvianca

Fri 11/145:45 amIAD - EZE

1 stop22h 05mAvianca

Deal found 9/13

$694

Sun 9/283:48 amEZE - IAD

1 stop21h 42mCopa Airlines

Sun 10/122:25 amIAD - EZE

1 stop21h 30mCopa Airlines

Deal found 9/15

$697

Thu 10/3010:25 pmEZE - IAD

1 stop21h 53mDelta

Tue 11/410:11 amIAD - EZE

2 stops18h 09mDelta

Deal found 9/15

$700

Tue 12/161:40 amEZE - IAD

3 stops24h 30mAvianca

Wed 12/315:45 amIAD - EZE

1 stop22h 05mAvianca

Deal found 9/14

$701

Mon 9/298:10 pmEZE - IAD

1 stop16h 30mDelta

Tue 10/146:00 amIAD - EZE

1 stop26h 45mDelta

Deal found 9/14

$702

Thu 10/210:30 amAEP - IAD

2 stops20h 05mMultiple Airlines

Wed 10/157:00 amIAD - AEP

1 stop21h 40mMultiple Airlines

Deal found 9/15

$702

Thu 10/304:30 pmEZE - IAD

2 stops23h 07mLATAM Airlines

Tue 11/47:05 amIAD - EZE

2 stops21h 15mLATAM Airlines

Deal found 9/15

$709

Thu 11/207:00 amAEP - IAD

1 stop23h 25mAvianca

Fri 11/285:45 amIAD - AEP

1 stop21h 55mAvianca

Deal found 9/13

$715

Wed 10/292:15 amEZE - IAD

1 stop13h 50mCopa Airlines

Mon 11/31:13 amIAD - EZE

1 stop21h 40mCopa Airlines

Deal found 9/15

$718

Wed 11/57:00 pmEZE - IAD

3 stops34h 10mMultiple Airlines

Fri 11/145:45 amIAD - EZE

1 stop22h 05mMultiple Airlines

Deal found 9/13

$721

Sun 10/263:57 amEZE - IAD

1 stop21h 36mCopa Airlines

Thu 10/302:25 amIAD - EZE

1 stop21h 35mCopa Airlines

Deal found 9/13

$727

Thu 11/208:25 pmAEP - IAD

2 stops17h 06mLATAM Airlines

Fri 11/2812:36 pmIAD - AEP

2 stops19h 04mLATAM Airlines

Deal found 9/13

$739

Best flights from Buenos Aires to Dulles Intl
Discover carefully curated flight deals from Buenos Aires to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2025.

Mon 10/272:32 pmEZE - IAD

1 stop14h 48mCopa Airlines

Thu 10/302:25 amIAD - EZE

1 stop21h 35mCopa Airlines

Deal found 9/13

$697

Thu 10/308:55 pmEZE - IAD

1 stop18h 42mDelta

Tue 11/412:09 pmIAD - EZE

1 stop20h 06mDelta

Deal found 9/13

$700

Thu 10/210:30 amAEP - IAD

2 stops20h 05mMultiple Airlines

Wed 10/157:00 amIAD - AEP

1 stop21h 40mMultiple Airlines

Deal found 9/15

$702

Thu 10/304:30 pmEZE - IAD

2 stops23h 07mLATAM Airlines

Tue 11/47:05 amIAD - EZE

2 stops21h 15mLATAM Airlines

Deal found 9/15

$709

Thu 11/207:00 amAEP - IAD

1 stop23h 25mAvianca

Fri 11/285:45 amIAD - AEP

1 stop21h 55mAvianca

Deal found 9/13

$715

Sun 9/283:48 amEZE - IAD

1 stop21h 42mCopa Airlines

Sun 10/122:25 amIAD - EZE

1 stop21h 30mCopa Airlines

Deal found 9/15

$697

Mon 9/298:10 pmEZE - IAD

1 stop13h 59mDelta

Mon 10/136:00 amIAD - EZE

1 stop26h 45mDelta

Deal found 9/15

$700

Thu 11/208:25 pmAEP - IAD

2 stops17h 06mLATAM Airlines

Fri 11/2812:36 pmIAD - AEP

2 stops19h 04mLATAM Airlines

Deal found 9/13

$739

Wed 11/57:00 pmEZE - IAD

3 stops34h 10mMultiple Airlines

Thu 11/134:30 amIAD - EZE

2 stops23h 20mMultiple Airlines

Deal found 9/13

$742

Wed 10/292:15 amEZE - IAD

1 stop13h 50mCopa Airlines

Mon 11/31:13 amIAD - EZE

1 stop21h 40mCopa Airlines

Deal found 9/15

$718

Thu 10/27:00 amAEP - IAD

1 stop23h 35mAvianca

Wed 10/157:00 amIAD - AEP

1 stop21h 40mAvianca

Deal found 9/15

$833

Thu 10/302:32 pmEZE - IAD

1 stop14h 48mCopa Airlines

Mon 11/101:13 amIAD - EZE

1 stop19h 18mCopa Airlines

Deal found 9/14

$727

Last-minute flights from Buenos Aires to Dulles Intl
Discover last-minute flight deals from Buenos Aires to Dulles Intl. Data last updated September 15, 2025 and is based on user searches.

Sun 9/283:48 amEZE - IAD

1 stop21h 42mCopa Airlines

Sun 10/122:25 amIAD - EZE

1 stop21h 30mCopa Airlines

Deal found 9/15

$697

Sun 9/281:40 amEZE - IAD

1 stop13h 20mAvianca

Mon 10/134:05 amIAD - EZE

2 stops19h 05mAvianca

Deal found 9/15

$730

Sun 9/281:40 amEZE - IAD

1 stop13h 20mAvianca

Tue 10/145:45 amIAD - EZE

2 stops23h 00mAvianca

Deal found 9/14

$743

Mon 9/298:10 pmEZE - IAD

1 stop16h 30mDelta

Tue 10/146:00 amIAD - EZE

1 stop26h 45mDelta

Deal found 9/14

$702

Mon 9/294:40 pmAEP - IAD

2 stops22h 20mMultiple Airlines

Tue 10/145:45 amIAD - AEP

3 stops21h 55mMultiple Airlines

Deal found 9/14

$807

Wed 10/11:40 amEZE - IAD

2 stops17h 25mAvianca

Wed 10/157:00 amIAD - EZE

1 stop21h 45mAvianca

Deal found 9/15

$747

Thu 10/210:30 amAEP - IAD

2 stops20h 05mMultiple Airlines

Wed 10/157:00 amIAD - AEP

1 stop21h 40mMultiple Airlines

Deal found 9/15

$702

Sun 10/263:57 amEZE - IAD

1 stop21h 36mCopa Airlines

Thu 10/302:25 amIAD - EZE

1 stop21h 35mCopa Airlines

Deal found 9/13

$727

Wed 10/292:15 amEZE - IAD

1 stop13h 50mCopa Airlines

Mon 11/31:13 amIAD - EZE

1 stop21h 40mCopa Airlines

Deal found 9/15

$718

Wed 10/292:15 amEZE - IAD

1 stop13h 50mCopa Airlines

Tue 11/118:22 amIAD - EZE

1 stop14h 38mCopa Airlines

Deal found 9/14

$740

Thu 10/308:55 pmEZE - IAD

1 stop21h 02mDelta

Tue 11/43:33 pmIAD - EZE

1 stop15h 27mDelta

Deal found 9/15

$700

Thu 10/304:30 pmEZE - IAD

2 stops23h 07mLATAM Airlines

Tue 11/47:05 amIAD - EZE

2 stops21h 15mLATAM Airlines

Deal found 9/15

$709

One-way flights from Buenos Aires to Dulles Intl
Search for one-way flight options from Buenos Aires to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 15, 2025.

Thu 10/210:30 amAEP - IAD

2 stops20h 05mMultiple Airlines

Deal found 9/13

$340

Thu 9/2510:10 pmAEP - IAD

2 stops40h 50mMultiple Airlines

Deal found 9/13

$368

Tue 9/302:30 amEZE - IAD

2 stops36h 55mMultiple Airlines

Deal found 9/13

$382

Wed 9/242:30 amEZE - IAD

2 stops36h 55mMultiple Airlines

Deal found 9/13

$384

Tue 9/301:40 amEZE - IAD

1 stop13h 20mAvianca

Deal found 9/13

$390

Wed 10/11:40 amEZE - IAD

2 stops17h 25mAvianca

Deal found 9/13

$391

Thu 10/910:30 amAEP - IAD

2 stops20h 05mMultiple Airlines

Deal found 9/13

$396

Wed 10/110:30 amAEP - IAD

2 stops28h 30mMultiple Airlines

Deal found 9/13

$411

Sat 11/17:35 amEZE - IAD

1 stop22h 50mAvianca

Deal found 9/14

$414

Sat 12/64:55 pmEZE - IAD

1 stop22h 20mAvianca

Deal found 9/15

$415

Sat 2/287:35 amEZE - IAD

2 stops20h 05mAvianca

Deal found 9/13

$416

Mon 12/84:55 pmEZE - IAD

2 stops24h 00mAvianca

Deal found 9/14

$417

Cheapflights Fare Finder

Use the filters below to find and compare flights from Buenos Aires to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Mon 10/27

2:32 pm-4:20 am

1 stop14h 48m

Washington, D.C. Dulles Intl

Thu 10/30

2:25 am-1:00 am

1 stop21h 35m

$697

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Sun 9/28

3:48 am-12:30 am

1 stop21h 42m

Washington, D.C. Dulles Intl

Sun 10/12

2:25 am-12:55 am

1 stop21h 30m

$697

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Thu 10/30

8:55 pm-2:37 pm

1 stop18h 42m

Washington, D.C. Dulles Intl

Tue 11/4

12:09 pm-10:15 am

1 stop20h 06m

$700

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Mon 9/29

8:10 pm-9:09 am

1 stop13h 59m

Washington, D.C. Dulles Intl

Mon 10/13

6:00 am-9:45 am

1 stop26h 45m

$700

Buenos AiresWashington, D.C.

AEP - IAD

AEPIAD

Buenos Aires Jorge Newbery

Thu 10/2

10:30 am-5:35 am

2 stops20h 05m

Washington, D.C. Dulles Intl

Wed 10/15

7:00 am-5:40 am

1 stop21h 40m

$702

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Thu 10/30

4:30 pm-2:37 pm

2 stops23h 07m

Washington, D.C. Dulles Intl

Tue 11/4

7:05 am-6:20 am

2 stops21h 15m

$709

Buenos AiresWashington, D.C.

AEP - IAD

AEPIAD

Buenos Aires Jorge Newbery

Thu 11/20

7:00 am-4:25 am

1 stop23h 25m

Washington, D.C. Dulles Intl

Fri 11/28

5:45 am-5:40 am

1 stop21h 55m

$715

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Wed 10/29

2:15 am-3:05 pm

1 stop13h 50m

Washington, D.C. Dulles Intl

Mon 11/3

1:13 am-12:53 am

1 stop21h 40m

$718

Buenos AiresWashington, D.C.

EZE - IAD

EZEIAD

Buenos Aires Ministro Pistarini

Thu 10/30

2:32 pm-4:20 am

1 stop14h 48m

Washington, D.C. Dulles Intl

Mon 11/10

1:13 am-10:31 pm

1 stop19h 18m

$727

Buenos AiresWashington, D.C.

AEP - IAD

AEPIAD

Buenos Aires Jorge Newbery

Thu 11/20

8:25 pm-11:31 am

2 stops17h 06m

Washington, D.C. Dulles Intl

Fri 11/28

12:36 pm-9:40 am

2 stops19h 04m

$739

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 31 results

Best time to book a flight from Buenos Aires to Dulles Intl

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

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

Currently, August is the cheapest month in which you can book a flight from Buenos Aires to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Buenos Aires to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 BUE to IAD?

It’s typically best to fly out from Buenos Aires to Washington, D.C. Dulles Intl Airport in the afternoon. Doing so could potentially save you 14% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing Dulles Intl

Get a feel of what it's like to fly with Copa Airlines from Buenos Aires to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Copa Airlines

7.6

Good

1,531 reviews

Reviews

1 / 20

4.0

Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip

Copa Airlines

7.6

Good

1,531 reviews

Copa Airlines

7.6

Good

1,531 reviews

Reviews

1 / 20

4.0

Okay

Juan Pablo,Sep 2025

PTY - VVI

Related info for your journey

How long is the flight from Buenos Aires to Washington, D.C. Dulles Intl Airport?
Copa Airlines, Delta, and Avianca can get you from Buenos Aires to Washington, D.C. Dulles Intl Airport in just under 14h 48m. Your travel time can differ by up to 8h 37m. There are 5235 mi between Buenos Aires and Washington, D.C. Dulles Intl Airport. This flight may include one or multiple stops.
What are the cheapest airlines flying from Buenos Aires to Washington, D.C. Dulles Intl Airport round-trip?
Cheapflights users have booked flights from Buenos Aires to Washington, D.C. Dulles Intl Airport round-trip from $344. Other airlines that can offer you cheap pricing are Avianca, from $434, and Copa Airlines, from $442. You may be able to fly from Buenos Aires to Washington, D.C. Dulles Intl Airport for 62% less than the average price by searching for these airlines.
Can I find deals for flights from Buenos Aires to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Buenos Aires to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Buenos Aires to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Buenos Aires to Dulles Intl.
Can I find deals for business class flights from Buenos Aires to Dulles Intl?
Yes. Cheapflights offers flight deals from Buenos Aires to Dulles Intl 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 Buenos Aires to Washington, D.C. Dulles Intl Airport?
Currently, August is the cheapest month in which you can book a flight from Buenos Aires to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Buenos Aires to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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.

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Silver Spring

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Top 3 airlines flying from Buenos Aires to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$344	Average$1,064	FlexibilityNo cancel fee	On-timeN/A
Avianca	Cheapest$434	Average$707	FlexibilityNo cancel fee	On-time71%
Copa Airlines	Cheapest$442	Average$912	FlexibilityNo cancel fee	On-time70%

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$340+ Cheap flights from Buenos Aires (BUE) to Dulles Intl (IAD)

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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Buenos Aires to Dulles Intl with Cheapflights

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Cheap flight deals from Buenos Aires to Dulles Intl

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Find flight deals from Buenos Aires to Dulles Intl

Cheapest flights from Buenos Aires to Dulles IntlExplore the most affordable flight options available from Buenos Aires to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Explore the most affordable flight options available from Buenos Aires to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Buenos Aires to Washington, D.C. Dulles Intl Airport that are best for you.

Best time to book a flight from Buenos Aires to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Buenos Aires with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Buenos Aires to Washington, D.C. Dulles Intl Airport

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

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

Find hourly flight availability from Buenos Aires to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

Reviews of airlines servicing Dulles Intl

Get a feel of what it's like to fly with Copa Airlines from Buenos Aires to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

How long is the flight from Buenos Aires to Washington, D.C. Dulles Intl Airport?

What are the cheapest airlines flying from Buenos Aires to Washington, D.C. Dulles Intl Airport round-trip?

Can I find deals for flights from Buenos Aires to Dulles Intl that include hotel bookings?

How can I find direct flights from Buenos Aires to Dulles Intl?

Can I find deals for business class flights from Buenos Aires to Dulles Intl?

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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Alternative routes for Buenos Aires to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Buenos Aires to Dulles Intl

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Cheapest flights from Buenos Aires to Dulles Intl
Explore the most affordable flight options available from Buenos Aires to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.