HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$324+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
POA — IAD
ene. 11 — ene. 181
dom. 1/11
dom. 1/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Porto Alegre to Dulles Intl 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 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 diciembre 12, 2025.

This Copa Airlines deal was found by Cheapflights users on 12/10. 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.
jue. 12/181:35 amPOA - IAD
1 stop14h 27mCopa Airlines
jue. 1/14:59 amIAD - POA
1 stop17h 31mCopa Airlines
Deal found 12/10$890
This United Airlines deal was found by Cheapflights users on 12/11. 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.
vie. 12/196:15 pmPOA - IAD
1 stop14h 20mUnited Airlines
vie. 1/210:30 pmIAD - POA
1 stop13h 00mUnited Airlines
Deal found 12/11$952
This Delta deal was found by Cheapflights users on 12/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/196:00 pmPOA - IAD
2 stops20h 13mDelta
vie. 1/210:57 amIAD - POA
2 stops20h 23mDelta
Deal found 12/11$1,368
This LATAM Airlines deal was found by Cheapflights users on 12/11. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/224:40 amPOA - IAD
2 stops21h 32mLATAM Airlines
jue. 1/112:58 pmIAD - POA
2 stops23h 07mLATAM Airlines
Deal found 12/11$1,378
This Expedia deal was found by Cheapflights users on 12/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/225:55 pmPOA - IAD
2 stops24h 53mMultiple Airlines
lun. 1/55:45 amIAD - POA
2 stops32h 45mMultiple Airlines
Deal found 12/11$1,401
This United Airlines deal was found by Cheapflights users on 12/11. 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.
mar. 12/233:25 pmPOA - IAD
1 stop17h 10mUnited Airlines
jue. 1/18:15 amIAD - POA
2 stops32h 05mUnited Airlines
Deal found 12/11$1,427

Find 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 diciembre 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$680
(Mytrip)

One-way from

$324
(American Airlines)

Popular in

December

Cheapest in

June

Average price

$1,123
Provider with most accurate pricing for Porto Alegre Salgado Filho-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Porto Alegre Salgado Filho-Washington, D.C. Dulles Intl flights.
Search Deals
From Porto Alegre Salgado Filho to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Porto Alegre Salgado Filho to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($41 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 diciembre 12, 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

mié. 2/4

9:05 pm-4:25 am

2 stops33h 20m

Washington, D.C. Dulles Intl

mié. 2/18

3:35 pm-12:25 am

1 stop30h 50m

$680

Porto AlegreWashington, D.C.

POA - IAD

POAIAD

Porto Alegre Salgado Filho

mié. 2/4

2:10 pm-11:46 am

2 stops23h 36m

Washington, D.C. Dulles Intl

mié. 2/18

10:30 pm-6:20 pm

1 stop17h 50m

$829

Porto AlegreWashington, D.C.

POA - IAD

POAIAD

Porto Alegre Salgado Filho

mar. 2/3

1:30 am-2:00 pm

1 stop14h 30m

Washington, D.C. Dulles Intl

mié. 2/18

3:35 pm-12:25 am

1 stop30h 50m

$896

Porto AlegreWashington, D.C.

POA - IAD

POAIAD

Porto Alegre Salgado Filho

lun. 12/22

4:40 am-12:12 am

2 stops21h 32m

Washington, D.C. Dulles Intl

jue. 1/1

12:58 pm-2:05 pm

2 stops23h 07m

$1,378

Porto AlegreWashington, D.C.

POA - IAD

POAIAD

Porto Alegre Salgado Filho

lun. 4/27

6:30 pm-10:19 pm

2 stops28h 49m

$324

Porto AlegreWashington, D.C.

POA - IAD

POAIAD

Porto Alegre Salgado Filho

mar. 12/16

1:35 am-11:33 pm

1 stop23h 58m

$334

Porto AlegreWashington, D.C.

POA - IAD

POAIAD

Porto Alegre Salgado Filho

dom. 4/26

1:35 am-3:06 pm

1 stop14h 31m

$390

Porto AlegreWashington, D.C.

POA - IAD

POAIAD

Porto Alegre Salgado Filho

mié. 12/17

1:35 am-11:33 pm

1 stop23h 58m

$391

Porto AlegreWashington, D.C.

POA - IAD

POAIAD

Porto Alegre Salgado Filho

mié. 12/24

6:05 pm-12:13 pm

2 stops20h 08m

$700

Porto AlegreWashington, D.C.

POA - IAD

POAIAD

Porto Alegre Salgado Filho

jue. 12/18

6:40 am-9:11 am

2 stops28h 31m

$712

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 12 results
1
2
  • Most accurate provider: When it comes to deals on Porto Alegre-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto Alegre-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Porto Alegre-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Porto Alegre-Washington, D.C. Dulles Intl Airport 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 Porto Alegre-Washington, D.C. Dulles Intl Airport 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 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 month to book a flight from Porto Alegre to Washington, D.C. Dulles Intl Airport?

Currently, May is the cheapest month in which you can book a flight from Porto Alegre to Washington, D.C. Dulles Intl Airport (average of $415). Flying from Porto Alegre to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $1,082). 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 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 diciembre 12, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 33% on flights from Porto Alegre to Washington, D.C. Dulles Intl Airport by exploring options for tickets in the morning.

How much does it cost to fly round-trip from Porto Alegre to Washington, D.C. Dulles Intl Airport?

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.

  • 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, May is the cheapest month in which you can book a flight from Porto Alegre to Washington, D.C. Dulles Intl Airport (average of $415). Flying from Porto Alegre to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $1,082). 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
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Fairfax
Linthicum Heights
Manassas
Rockville
Laurel
Towson
National Harbor
Bowie
Largo
McLean
Clinton

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 Porto Alegre to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Porto Alegre to Baltimore flights
Porto Alegre to Reagan-National flights

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.