HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Porto Alegre

$220+ 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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — POA
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Porto Alegre with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 septiembre 11, 2025.

Round-trip from

$602
(Copa Airlines)

One-way from

$220
(Copa Airlines)

Popular in

December

Cheapest in

October

Average price

$586
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. 23% potential increase in price ($233 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($54 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find 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 septiembre 11, 2025.

This Copa 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/299:35 amIAD - POA
1 stop13h 45mCopa Airlines
dom. 10/51:25 amPOA - IAD
1 stop14h 40mCopa Airlines
Deal found 9/11$602
This Copa Airlines deal was found by Cheapflights users on 9/10. 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.
sáb. 10/252:25 amIAD - POA
1 stop20h 55mCopa Airlines
sáb. 11/11:35 amPOA - IAD
1 stop23h 58mCopa Airlines
Deal found 9/10$636
This Copa 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/262:25 amIAD - POA
1 stop20h 55mCopa Airlines
dom. 11/91:35 amPOA - IAD
1 stop23h 58mCopa Airlines
Deal found 9/11$674
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.
lun. 10/2711:30 pmIAD - POA
1 stop15h 50mUnited Airlines
lun. 11/105:10 pmPOA - IAD
1 stop15h 25mUnited Airlines
Deal found 9/11$679
This United Airlines deal was found by Cheapflights users on 9/10. 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.
dom. 10/266:00 amIAD - POA
2 stops31h 20mUnited Airlines
dom. 11/24:05 pmPOA - IAD
1 stop16h 30mUnited Airlines
Deal found 9/10$699
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/252:25 amIAD - POA
1 stop20h 55mMultiple Airlines
dom. 11/25:30 amPOA - IAD
2 stops33h 45mMultiple Airlines
Deal found 9/10$740

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 septiembre 11, 2025.
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

sáb. 10/25

2:25 am-12:20 am

1 stop20h 55m

Porto Alegre Salgado Filho

sáb. 11/1

1:35 am-12:33 am

1 stop23h 58m

$636

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

dom. 10/26

2:25 am-12:20 am

1 stop20h 55m

Porto Alegre Salgado Filho

dom. 11/9

1:35 am-11:33 pm

1 stop23h 58m

$674

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

lun. 10/27

11:30 pm-4:20 pm

1 stop15h 50m

Porto Alegre Salgado Filho

lun. 11/10

5:10 pm-6:35 am

1 stop15h 25m

$679

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

dom. 10/26

6:00 am-2:20 pm

2 stops31h 20m

Porto Alegre Salgado Filho

dom. 11/2

4:05 pm-6:35 am

1 stop16h 30m

$699

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

sáb. 10/25

2:25 am-12:20 am

1 stop20h 55m

Porto Alegre Salgado Filho

dom. 11/2

5:30 am-1:15 pm

2 stops33h 45m

$740

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

jue. 12/11

7:59 pm-6:30 am

2 stops32h 31m

Porto Alegre Salgado Filho

sáb. 12/20

7:45 am-9:47 am

2 stops28h 02m

$774

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

lun. 9/29

5:25 pm-12:25 am

2 stops30h 00m

Porto Alegre Salgado Filho

lun. 10/6

7:20 am-9:16 am

2 stops26h 56m

$780

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

sáb. 11/8

1:13 am-12:30 am

1 stop21h 17m

$220

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

lun. 11/3

1:13 am-12:30 am

1 stop21h 17m

$316

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

dom. 11/9

2:35 pm-11:50 pm

2 stops31h 15m

$402

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 16 results
1
2

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.

Cheapflights Insights

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

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

Find hourly flight availability from Dulles Intl to Porto Alegre. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 11, 2025.

It’s optimal to fly from Washington, D.C. Dulles Intl Airport to Porto Alegre in the afternoon. By choosing this option you can save up to 14% on the cost of your flight, compared to a flight at noon.

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 septiembre 11, 2025.
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
1,531 reviews

Crew

8.1

Overall

7.6

Entertainment

6.8

Comfort

7.4

Food

6.8

Boarding

7.8

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

Crew

8.1

Overall

7.6

Entertainment

6.8

Comfort

7.4

Food

6.8

Boarding

7.8

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

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 $602, Copa Airlines can have you in Porto Alegre from Washington, D.C. Dulles Intl Airport in 13h 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 $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.

See more FAQs

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.

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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$428Average$485FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.