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Porto Alegre

$240+ Cheap flights from Dulles Intl (IAD) to Porto Alegre (POA)

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 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — POA
Mar 4 — Mar 111
Wed 3/4
Wed 3/11
1 adult, Economy
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Cheap flight deals from Dulles Intl to Porto Alegre

Cheapest flights from Dulles Intl to Porto Alegre
Explore the most affordable flight options available from Dulles Intl to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 2, 2026.

This Copa Airlines deal was found by Cheapflights users on 1/31. 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.
Fri 4/179:32 am
IAD
-
POA
1 stop13h 48m
Copa Airlines
Thu 4/231:35 am
POA
-
IAD
1 stop23h 59m
Copa Airlines
Deal found 1/31$606
This United Airlines deal was found by Cheapflights users on 1/30. 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.
Sun 3/1511:30 pm
IAD
-
POA
1 stop15h 55m
United Airlines
Thu 3/192:05 pm
POA
-
IAD
1 stop17h 35m
United Airlines
Deal found 1/30$626
This Mytrip deal was found by Cheapflights users on 1/31. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/173:35 pm
IAD
-
POA
2 stops27h 30m
Multiple Airlines
Tue 3/241:40 pm
POA
-
IAD
2 stops16h 45m
Multiple Airlines
Deal found 1/31$646
This Travelocity deal was found by Cheapflights users on 2/1. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/86:01 am
IAD
-
POA
2 stops23h 29m
LATAM Airlines
Tue 3/3110:00 am
POA
-
IAD
2 stops26h 52m
LATAM Airlines
Deal found 2/1$714
This Orbitz deal was found by Cheapflights users on 1/31. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:50 pm
IAD
-
POA
2 stops23h 30m
LATAM Airlines
Fri 4/2412:35 pm
POA
-
IAD
2 stops24h 18m
LATAM Airlines
Deal found 1/31$721
This KAYAK deal was found by Cheapflights users on 1/31. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/62:22 am
IAD
-
POA
1 stop20h 53m
Copa Airlines
Mon 8/31:15 am
POA
-
IAD
1 stop24h 18m
Copa Airlines
Deal found 1/31$749
This United Airlines deal was found by Cheapflights users on 1/31. 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.
Tue 3/1711:30 pm
IAD
-
POA
1 stop13h 55m
United Airlines
Tue 3/243:25 pm
POA
-
IAD
1 stop16h 15m
United Airlines
Deal found 1/31$823

Find flight deals from Dulles Intl to Porto Alegre

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Porto Alegre (POA). 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 February 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$606
(Copa Airlines)

One-way from

$240
(Copa Airlines)

Popular in

December

Cheapest in

September

Average price

$687
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Porto Alegre Salgado Filho flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Porto Alegre Salgado Filho flights.
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From Washington, D.C. Dulles Intl to Porto Alegre Salgado Filho
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One-way flight from Washington, D.C. Dulles Intl to Porto Alegre Salgado Filho
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Highest demand for flights based on searches. 17% potential increase in price ($149 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($50 potential savings vs. average RT price).
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Average for round-trip flights in February 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Porto Alegre 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 February 2, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Porto Alegre that are best for you.

Fly from

Dulles Intl

Fly to

Porto Alegre

Route

Depart

Return

Price

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Fri 4/17

9:32 am-12:20 am

1 stop13h 48m

Porto Alegre Salgado Filho

Thu 4/23

1:35 am-12:34 am

1 stop23h 59m

$606

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Sun 3/15

11:30 pm-4:25 pm

1 stop15h 55m

Porto Alegre Salgado Filho

Thu 3/19

2:05 pm-6:40 am

1 stop17h 35m

$626

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Wed 4/8

10:06 am-6:10 am

2 stops19h 04m

Porto Alegre Salgado Filho

Wed 4/29

12:25 pm-11:46 am

2 stops24h 21m

$714

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Tue 3/17

3:35 pm-8:05 pm

2 stops27h 30m

Porto Alegre Salgado Filho

Tue 3/24

6:05 am-5:25 am

3 stops24h 20m

$723

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Thu 3/19

9:29 am-12:25 am

1 stop13h 56m

$240

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Thu 3/19

3:35 pm-5:00 pm

2 stops24h 25m

$290

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Sat 4/18

2:21 am-12:20 am

1 stop20h 59m

$292

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Thu 3/19

11:30 pm-4:25 pm

1 stop15h 55m

$794

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Sun 4/19

10:14 pm-4:30 pm

3 stops41h 16m

$1,109

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Porto Alegre flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Porto Alegre flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Porto Alegre flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Porto Alegre flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Porto Alegre flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Have a flexible travel schedule? Discover the best time to fly to Porto Alegre from Dulles Intl 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.

Reviews of airlines servicing Porto Alegre

Get insights into the airlines that provide service to Porto Alegre. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto Alegre. Reviews last updated February 2, 2026.
Peruse reviews from past customers who have flown with Copa Airlines from Washington, D.C. Dulles Intl Airport to Porto Alegre to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Copa Airlines
7.5
Good
1,559 reviews

Boarding

7.8

Crew

8.1

Food

6.8

Overall

7.5

Comfort

7.4

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Juan,Dec 2025

EZE - PTY

The outbound flight from Boston was awful. The handicapped services were the worst i have ever seen. NEVER AGAIN. THIS WAS NOT WORTH ANYWHERE NEAR $4K.
Copa Airlines
7.5
Good
1,559 reviews
Copa Airlines
7.5
Good
1,559 reviews

Boarding

7.8

Crew

8.1

Food

6.8

Overall

7.5

Comfort

7.4

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Juan,Dec 2025

EZE - PTY

The outbound flight from Boston was awful. The handicapped services were the worst i have ever seen. NEVER AGAIN. THIS WAS NOT WORTH ANYWHERE NEAR $4K.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Porto Alegre. 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 into for flights to Porto Alegre from Washington, D.C. Dulles Intl?

    Most people fly into Porto Alegre Salgado Filho (POA) if they book a flight to Porto Alegre from Washington, D.C. Dulles Intl. On average, Salgado Filho has 0 inbound flights from Washington, D.C. Dulles Intl per day from 1 airline. Porto Alegre Salgado Filho is conveniently located just 4.0 mi from Porto Alegre’s city center.

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

    For as low as $606, Copa Airlines can have you in Porto Alegre from Washington, D.C. Dulles Intl Airport in 13h 48m. There are 5051 mi between Washington, D.C. Dulles Intl Airport and Porto Alegre. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to Porto Alegre round-trip?

    Flying on Copa Airlines is currently your cheapest option to Porto Alegre, with prices starting at $428.

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

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

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

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

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

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

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Alternative routes for Dulles Intl to Porto Alegre

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Santa Maria flights

Top airline flying from Dulles Intl to Porto Alegre

Discover the top airline that operate flights from Dulles Intl to Porto Alegre. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$428Average$524FlexibilityNo cancel feeOn-time70%

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