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Dulles Intl

$513+ Cheap flights from Porto Alegre (POA) 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 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
POA — IAD
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Porto Alegre to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Porto Alegre (POA) to Dulles Intl (IAD). 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 September 11, 2025.

Round-trip from

$636
(Copa Airlines)

One-way from

$513
(123 Milhas)

Popular in

December

Cheapest in

June

Average price

$674
From Porto Alegre Salgado Filho to Washington, D.C. Dulles Intl
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One-way flight from Porto Alegre Salgado Filho to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 21% potential increase in price ($248 potential increase over avg. RT price).
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Cheapest flight prices on average. 13% potential price decrease ($110 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 Porto Alegre to Dulles Intl

Cheapest flights from Porto Alegre to Dulles Intl
Explore the most affordable flight options available from Porto Alegre to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Copa Airlines deal was found by Cheapflights users on 9/9. 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 9/91:25 amPOA - IAD
1 stop24h 05mCopa Airlines
Tue 9/232:25 amIAD - POA
1 stop20h 55mCopa Airlines
Deal found 9/9$596
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/101:55 pmPOA - IAD
1 stop17h 30mUnited Airlines
Wed 9/2410:35 pmIAD - POA
1 stop35h 20mUnited Airlines
Deal found 9/9$603
This Copa Airlines deal was found by Cheapflights users on 9/9. 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.
Sun 9/211:25 amPOA - IAD
1 stop14h 40mCopa Airlines
Sun 10/192:25 amIAD - POA
1 stop20h 55mCopa Airlines
Deal found 9/9$616
This oojo deal was found by Cheapflights users on 9/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/121:35 amPOA - IAD
1 stop27h 47mCopa Airlines
Sat 12/63:32 pmIAD - POA
1 stop30h 58mCopa Airlines
Deal found 9/9$620
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/225:10 pmPOA - IAD
1 stop14h 15mUnited Airlines
Mon 10/206:50 pmIAD - POA
2 stops18h 45mUnited Airlines
Deal found 9/11$723

Cheapflights Fare Finder

 
Customize your flight search to find flights from Porto Alegre to Dulles Intl 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 September 11, 2025.
Use the filters below to find and compare flights from Porto Alegre to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Porto Alegre

Fly to

Dulles Intl

Route

Depart

Return

Price

Porto AlegreWashington, D.C.

POA - IAD

POAIAD

Porto Alegre Salgado Filho

Wed 11/12

1:35 am-3:22 am

1 stop27h 47m

Washington, D.C. Dulles Intl

Sat 12/6

3:32 pm-12:30 am

1 stop30h 58m

$620

Porto AlegreWashington, D.C.

POA - IAD

POAIAD

Porto Alegre Salgado Filho

Mon 9/22

5:10 pm-6:25 am

1 stop14h 15m

Washington, D.C. Dulles Intl

Mon 10/20

6:50 pm-2:35 pm

2 stops18h 45m

$723

Porto AlegreWashington, D.C.

POA - IAD

POAIAD

Porto Alegre Salgado Filho

Thu 2/5

6:25 pm-10:18 pm

2 stops29h 53m

Washington, D.C. Dulles Intl

Mon 2/9

11:30 am-5:45 pm

2 stops28h 15m

$759

Porto AlegreWashington, D.C.

POA - IAD

POAIAD

Porto Alegre Salgado Filho

Thu 11/13

2:05 pm-6:35 am

1 stop18h 30m

Washington, D.C. Dulles Intl

Sat 12/6

10:35 pm-4:10 pm

2 stops39h 35m

$821

Porto AlegreWashington, D.C.

POA - IAD

POAIAD

Porto Alegre Salgado Filho

Wed 2/4

1:30 am-3:15 am

1 stop27h 45m

Washington, D.C. Dulles Intl

Sun 2/8

1:18 am-12:25 am

1 stop21h 07m

$912

Porto AlegreWashington, D.C.

POA - IAD

POAIAD

Porto Alegre Salgado Filho

Wed 12/24

2:05 pm-9:47 am

2 stops21h 42m

$513

Porto AlegreWashington, D.C.

POA - IAD

POAIAD

Porto Alegre Salgado Filho

Tue 12/23

1:35 am-2:02 pm

1 stop14h 27m

$911

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Best time to book a flight from Porto Alegre to Dulles Intl

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

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

Find hourly flight availability from Porto Alegre 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 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Porto Alegre to Washington, D.C. Dulles Intl Airport as you normally would.

Related info for your journey

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

  • What airport do you fly from for flights from Porto Alegre to Washington, D.C. Dulles Intl?

    If you book a flight to Washington, D.C. Dulles Intl from Porto Alegre, you will be flying from Salgado Filho, which is the city’s only airport. Porto Alegre Salgado Filho (POA) is located 4.0 mi from the center of Porto Alegre. There are 0 flights from Salgado Filho to Washington, D.C. Dulles Intl per day from 0 different airlines.

  • How long is the flight from Porto Alegre to Washington, D.C. Dulles Intl Airport?

    There are many flights that can get you from Porto Alegre to Washington, D.C. Dulles Intl Airport in 14h 15m. Fly via Copa Airlines or United Airlines to get the fastest option. The distance from Porto Alegre to Washington, D.C. Dulles Intl Airport is about 5051 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Porto Alegre to Dulles Intl that include hotel bookings?

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

  • How can I find direct flights from Porto Alegre to Dulles Intl?

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

  • Can I find deals for business class flights from Porto Alegre to Dulles Intl?

    Yes. Cheapflights offers flight deals from Porto Alegre 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 Porto Alegre to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Porto Alegre to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Porto Alegre 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.

See more FAQs

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

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Woodbridge
Alexandria
Arlington
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
Dundalk
National Harbor

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