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

For as low as $911, Avianca can have you in Porto Alegre from Washington, D.C. Dulles Intl Airport in 24h 45m. 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 $360.

In terms of precipitation, rainfall in Porto Alegre ranges from 2.8 - 5.1 inches per month. September is typically the wettest month, when rainfall can reach 5.1 in. November is typically the driest time to visit Porto Alegre when rainfall is around 2.8 in.

If weather is an important factor for your trip to Porto Alegre, use this chart to help with planning. For those seeking warmer temperatures, February is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 55.4 F).

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

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

Most accurate provider : When it comes to deals on Washington, D.C. Dulles Intl Airport-Porto Alegre flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Washington, D.C. Dulles Intl Airport-Porto Alegre flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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.

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.

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.

$391+ Cheap Flights from Washington, D.C. Dulles Intl Airport to Porto Alegre

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Cheap flight deals from Dulles Intl to Porto Alegre

Cheapest

Best

Last-minute

One-way

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 November 5, 2026.

Mon 11/232:30 pm -

2 stops42h 30m

Wed 11/259:15 pm -

2 stops33h 15m

Deal found 10/31

$773

Mon 12/75:50 am -

2 stops24h 20m

Fri 12/112:20 pm -

2 stops16h 10m

Deal found 11/4

$846

Mon 12/73:30 pm -

1 stop30h 55m

Thu 12/101:35 am -

1 stop27h 44m

Deal found 11/4

$880

Tue 11/1010:25 pm -

1 stop18h 00m

Tue 11/172:00 pm -

1 stop18h 30m

Deal found 11/3

$1,207

Mon 12/75:50 am -

2 stops31h 10m

Fri 12/112:00 pm -

3 stops25h 10m

Deal found 11/4

$1,214

Sun 12/273:30 pm -

1 stop30h 55m

Fri 1/81:40 am -

1 stop27h 33m

Deal found 11/1

$1,429

Mon 11/232:38 pm -

2 stops20h 17m

Wed 11/252:00 pm -

1 stop18h 30m

Deal found 11/3

$1,453

Best flights from Dulles Intl to Porto Alegre
Discover carefully curated flight deals from Dulles Intl to Porto Alegre that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.

Mon 11/232:30 pm -

2 stops42h 30m

Wed 11/259:15 pm -

2 stops33h 15m

Deal found 10/31

$773

Sun 2/283:36 pm -

1 stop30h 59m

Tue 3/91:40 am -

1 stop28h 32m

Deal found 11/3

$802

Mon 11/232:38 pm -

2 stops20h 17m

Wed 11/252:00 pm -

1 stop18h 30m

Deal found 11/3

$1,453

Mon 3/18:27 am -

1 stop14h 08m

Wed 3/109:10 am -

1 stop30h 59m

Deal found 11/2

$802

Sun 12/273:30 pm -

1 stop30h 55m

Fri 1/81:40 am -

1 stop27h 33m

Deal found 11/1

$1,429

Last-minute flights from Dulles Intl to Porto Alegre
Discover last-minute flight deals from Dulles Intl to Porto Alegre. Data last updated November 5, 2026 and is based on user searches.

Tue 11/1010:25 pm -

1 stop18h 00m

Tue 11/172:00 pm -

1 stop18h 30m

Deal found 11/3

$1,207

Mon 11/232:30 pm -

2 stops42h 30m

Wed 11/259:15 pm -

2 stops33h 15m

Deal found 10/31

$773

Mon 11/232:38 pm -

2 stops20h 17m

Wed 11/252:00 pm -

1 stop18h 30m

Deal found 11/3

$1,453

Mon 12/75:50 am -

2 stops24h 20m

Fri 12/112:20 pm -

2 stops16h 10m

Deal found 11/4

$846

Mon 12/73:30 pm -

1 stop30h 55m

Thu 12/101:35 am -

1 stop27h 44m

Deal found 11/4

$880

Mon 12/75:50 am -

2 stops31h 10m

Fri 12/112:00 pm -

3 stops25h 10m

Deal found 11/4

$1,214

Sun 12/273:30 pm -

1 stop30h 55m

Fri 1/81:40 am -

1 stop27h 33m

Deal found 10/31

$1,429

One-way flights from Dulles Intl to Porto Alegre
Search for one-way flight options from Dulles Intl to Porto Alegre. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.

Thu 12/33:30 pm -

1 stop30h 55m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/31

$391

Thu 2/251:19 am -

1 stop21h 16m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/4

$416

Fri 2/262:30 pm -

2 stops31h 15m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/4

$431

Fri 2/2610:16 pm -

3 stops33h 29m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/4

$438

Thu 12/35:50 am -

2 stops24h 20m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/31

$444

Tue 12/12:30 pm -

2 stops32h 00m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/31

$480

Fri 12/45:50 am -

2 stops40h 40m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/31

$500

Thu 12/174:22 am -

1 stop42h 03m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 11/4

$920

Tue 12/110:25 pm -

1 stop18h 00m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 10/31

$1,766

Find flight deals from Dulles Intl to Porto Alegre

Most accurate provider	Ovago 3 stars
Most trusted provider	Ovago 3 stars
Round-trip from	$588 (FlightHub)
One-way from	$391 (Copa Airlines)
Popular in	December
Cheapest in	February

Provider with most accurate pricing for Washington, D.C. Dulles Intl-Porto Alegre Salgado Filho flight deals.

Search Deals

Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Porto Alegre Salgado Filho flights.

Search Deals

From Washington, D.C. Dulles Intl to Porto Alegre Salgado Filho

Search Deals

One-way flight from Washington, D.C. Dulles Intl to Porto Alegre Salgado Filho

Search Deals

Highest demand for flights based on searches. 20% potential increase in price ($263 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($67 potential savings vs. average RT price).

Search Deals

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Porto Alegre

IAD Washington, D.C. Dulles Intl - POA Porto Alegre Salgado Filho

IADPOA

Washington, D.C. Dulles Intl

Thu 12/3

3:30 pm-12:25 am

1 stop30h 55m

Porto Alegre Salgado Filho

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$391

Quickest round-trip

Washington, D.C.Porto Alegre

IAD Washington, D.C. Dulles Intl - POA Porto Alegre Salgado Filho

IADPOA

Washington, D.C. Dulles Intl

Thu 2/25

1:19 am-12:35 am

1 stop21h 16m

Porto Alegre Salgado Filho

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$416

Washington, D.C.Porto Alegre

IAD Washington, D.C. Dulles Intl - POA Porto Alegre Salgado Filho

IADPOA

Washington, D.C. Dulles Intl

Fri 2/26

2:30 pm-11:45 pm

2 stops31h 15m

Porto Alegre Salgado Filho

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$431

Washington, D.C.Porto Alegre

IAD Washington, D.C. Dulles Intl - POA Porto Alegre Salgado Filho

IADPOA

Washington, D.C. Dulles Intl

Thu 12/3

5:50 am-8:10 am

2 stops24h 20m

Porto Alegre Salgado Filho

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$444

Washington, D.C.Porto Alegre

IAD Washington, D.C. Dulles Intl - POA Porto Alegre Salgado Filho

IADPOA

Washington, D.C. Dulles Intl

Wed 12/2

5:50 am-8:10 am

2 stops24h 20m

Porto Alegre Salgado Filho

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$480

Washington, D.C.Porto Alegre

IAD Washington, D.C. Dulles Intl - POA Porto Alegre Salgado Filho

IADPOA

Washington, D.C. Dulles Intl

Tue 12/1

2:30 pm-12:30 am

2 stops32h 00m

Porto Alegre Salgado Filho

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$480

Washington, D.C.Porto Alegre

IAD Washington, D.C. Dulles Intl - POA Porto Alegre Salgado Filho

IADPOA

Washington, D.C. Dulles Intl

Mon 11/23

2:30 pm-11:00 am

2 stops42h 30m

Porto Alegre Salgado Filho

Wed 11/25

9:15 pm-4:30 am

2 stops33h 15m

$773

Washington, D.C.Porto Alegre

IAD Washington, D.C. Dulles Intl - POA Porto Alegre Salgado Filho

IADPOA

Washington, D.C. Dulles Intl

Sun 2/28

3:36 pm-12:35 am

1 stop30h 59m

Porto Alegre Salgado Filho

Tue 3/9

1:40 am-4:12 am

1 stop28h 32m

$802

Washington, D.C.Porto Alegre

IAD Washington, D.C. Dulles Intl - POA Porto Alegre Salgado Filho

IADPOA

Washington, D.C. Dulles Intl

Mon 3/1

8:27 am-12:35 am

1 stop14h 08m

Porto Alegre Salgado Filho

Wed 3/10

9:10 am-2:09 pm

1 stop30h 59m

$802

Washington, D.C.Porto Alegre

IAD Washington, D.C. Dulles Intl - POA Porto Alegre Salgado Filho

IADPOA

Washington, D.C. Dulles Intl

Thu 12/17

4:22 am-12:25 am

1 stop42h 03m

Porto Alegre Salgado Filho

Wed 12/31

12:00 am-10:00 pm

Nonstop0h 00m

$920

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/31

Showing 1-10 of 13 resultsSorted by cheapest first

Compare providers for flights from Dulles Intl to Porto Alegre

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Porto Alegre in November.

Provider	Price Accuracy	Trust Score*
Ovago	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Porto Alegre flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Washington, D.C. Dulles Intl Airport-Porto Alegre flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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.

IAD-POA

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

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

7.6

Good

1,552 reviews

Reviews

1 / 20

4.0

Okay

Marcos,Nov 2026

BOS - PTY

Not good. Boarding was delayed about 30/40min which made my making my connection very stressful. On top of that, the accommodations (seating, entertainment, and food) were subpar -- to say the least. I've traveled a lot between the US and Argentina and this may have been my worst experience yet.

Copa Airlines

7.6

Good

1,552 reviews

Copa Airlines

7.6

Good

1,552 reviews

Reviews

1 / 20

4.0

Okay

Marcos,Nov 2026

BOS - PTY

Related info for your journey

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 $911, Avianca can have you in Porto Alegre from Washington, D.C. Dulles Intl Airport in 24h 45m. 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 $360.
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.

See more FAQs

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Complete your trip

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Porto Alegre Salgado Filho Airport car rentals

Top airline flying from Dulles Intl to Porto Alegre

Airline	Cheapest	Average	Flexibility	On-time
Copa Airlines	Cheapest$360	Average$900	FlexibilityNo cancel fee	On-time70%

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$391+ Cheap flights from Dulles Intl (IAD) to Porto Alegre (POA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to Porto Alegre with Cheapflights

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Cheap flight deals from Dulles Intl to Porto Alegre

Cheapest flights from Dulles Intl to Porto AlegreExplore 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 November 5, 2026.

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 November 5, 2026.

Best flights from Dulles Intl to Porto AlegreDiscover carefully curated flight deals from Dulles Intl to Porto Alegre that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.

Discover carefully curated flight deals from Dulles Intl to Porto Alegre that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.

Last-minute flights from Dulles Intl to Porto AlegreDiscover last-minute flight deals from Dulles Intl to Porto Alegre. Data last updated November 5, 2026 and is based on user searches.

Discover last-minute flight deals from Dulles Intl to Porto Alegre. Data last updated November 5, 2026 and is based on user searches.

One-way flights from Dulles Intl to Porto AlegreSearch for one-way flight options from Dulles Intl to Porto Alegre. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.

Search for one-way flight options from Dulles Intl to Porto Alegre. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.

Find flight deals from Dulles Intl to Porto Alegre

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Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Cheapflights Fare Finder

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

Compare providers for flights from Dulles Intl to Porto Alegre

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Porto Alegre in November.

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.

Reviews of airlines servicing Porto Alegre

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.

Related info for your journey

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

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Complete your trip

Complete your trip to Porto Alegre by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Dulles Intl to Porto Alegre by cabin class

Find flights from Dulles Intl to Porto Alegre, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Dulles Intl and Porto Alegre flights

Browse other Dulles Intl and Porto Alegre flight options. Last updated on November 5, 2026.

Other flights from Dulles Intl

Browse through other flights departing from Dulles Intl. Flights are based on user searches made on Cheapflights and were last updated on November 5, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Other flights to Porto Alegre

Explore flights to Porto Alegre departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on November 5, 2026.

Top airline flying from Dulles Intl to Porto Alegre

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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 November 5, 2026.

Best flights from Dulles Intl to Porto Alegre
Discover carefully curated flight deals from Dulles Intl to Porto Alegre that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.

Last-minute flights from Dulles Intl to Porto Alegre
Discover last-minute flight deals from Dulles Intl to Porto Alegre. Data last updated November 5, 2026 and is based on user searches.

One-way flights from Dulles Intl to Porto Alegre
Search for one-way flight options from Dulles Intl to Porto Alegre. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.