IAD - POA

$230 Find Cheap Flights from Washington Dulles Airport to Porto Alegre

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Porto Alegre departing on 3/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Porto Alegre

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Porto Alegre, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Porto Alegre, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$605
United Airlines
Sun 3/15Thu 3/19
IAD - POA • 1 stop
Cheapest one-way
$230
Multiple Airlines
Mon 3/9
IAD - POA • 2 stops
Top airlines
United Airlines
Cheapest • from $605 (round-trip)
Copa Airlines
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Porto Alegre!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Porto Alegre (IAD-POA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Porto Alegre that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Porto Alegre

Sun, Mar 15 - Thu, Mar 19
United Airlines Logo
11:30 pm - 4:25 pm
IAD
-
POA
15h 55m
1 stop
United Airlines Logo
3:30 pm - 6:40 am
POA
-
IAD
16h 10m
1 stop
$605United Airlines
Sun, Mar 15 - Thu, Mar 19
United Airlines Logo
11:30 pm - 4:25 pm
IAD
-
POA
15h 55m
1 stop
United Airlines Logo
2:05 pm - 6:40 am
POA
-
IAD
17h 35m
1 stop
$606United Airlines
Sun, Mar 15 - Thu, Mar 19
United Airlines Logo
6:15 am - 4:25 pm
IAD
-
POA
33h 10m
2 stops
United Airlines Logo
3:30 pm - 6:40 am
POA
-
IAD
16h 10m
1 stop
$610United Airlines
Sun, Mar 15 - Thu, Mar 19
United Airlines Logo
11:30 pm - 4:25 pm
IAD
-
POA
15h 55m
1 stop
United Airlines Logo
2:05 pm - 6:40 am
POA
-
IAD
17h 35m
1 stop
$626United Airlines
Sun, Mar 15 - Thu, Mar 19
United Airlines Logo
8:30 am - 4:25 pm
IAD
-
POA
30h 55m
2 stops
United Airlines Logo
3:30 pm - 11:59 pm
POA
-
IAD
33h 29m
2 stops
$627United Airlines
Sun, Mar 15 - Thu, Mar 19
United Airlines Logo
8:30 am - 2:25 pm
IAD
-
POA
28h 55m
2 stops
United Airlines Logo
3:30 pm - 6:40 am
POA
-
IAD
16h 10m
1 stop
$630United Airlines
Sun, Mar 15 - Thu, Mar 19
United Airlines Logo
6:15 am - 4:25 pm
IAD
-
POA
33h 10m
2 stops
United Airlines Logo
2:05 pm - 11:59 pm
POA
-
IAD
34h 54m
2 stops
$647United Airlines
Fri, Mar 6 - Sat, Mar 21
Multiple Airlines Logo
5:45 am - 8:40 am
IAD
-
POA
24h 55m
2 stops
Multiple Airlines Logo
10:35 am - 5:25 am
POA
-
IAD
19h 50m
2 stops
$714Multiple Airlines
Fri, Apr 17 - Sat, May 2
LATAM Airlines Logo
6:50 pm - 7:20 pm
IAD
-
POA
23h 30m
2 stops
LATAM Airlines Logo
10:05 am - 12:05 pm
POA
-
IAD
27h 00m
2 stops
$720LATAM Airlines
Fri, Mar 6 - Sat, Mar 21
Multiple Airlines Logo
5:45 am - 12:20 am
IAD
-
POA
40h 35m
3 stops
Multiple Airlines Logo
8:10 pm - 4:10 am
POA
-
IAD
33h 00m
3 stops
$780Multiple Airlines
Booking Insights

KAYAK's insights & trends for Dulles Intl to Porto Alegre flights

Get data-powered insights and trends into flights from Dulles Intl to Porto Alegre to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Washington Dulles Airport to Porto Alegre?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Washington Dulles Airport to Porto Alegre were found on United Airlines ($605) and LATAM Airlines ($720).

Find deals

Good to know

Cheapest flight$230
Flight from Washington Dulles Airport to Porto Alegre

When to book flights from Dulles Intl to Porto Alegre

Are your dates flexible? Find out the best times to travel from Dulles Intl to Porto Alegre based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Porto Alegre flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Porto Alegre was $230 for a one-way ticket and $605 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Porto Alegre?

    Yes, you’ll need a passport to travel to Porto Alegre from Washington Dulles Airport.

  • Which airports will I be using when flying from Washington Dulles Airport to Porto Alegre?

    When flying out of Washington Dulles Airport you will be using Washington, D.C. Dulles Intl. You will be landing at Porto Alegre, also known as Porto Alegre Salgado Filho.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Porto Alegre?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Porto Alegre?

    Star Alliance is the only airline alliance operating flights between Washington Dulles Airport and Porto Alegre.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Porto Alegre?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Porto Alegre.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Porto Alegre?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto Alegre from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Porto Alegre?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto Alegre with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and POA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Porto Alegre?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto Alegre from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Dulles Intl to Porto Alegre

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Porto Alegre. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Porto Alegre? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.5
Copa AirlinesOverall score based on 1560 reviews
8.1Crew
6.8Food
7.4Comfort
7.8Boarding
6.8Entertainment
Airline reviews

Horrible. No TV or any type of entertainment on board. Passwnger listening to/watching stuff on their own phone with no headphones making it noise and uncomfortable for everyone else, little/tiny food portions, old seats, useless wifi (cant access anything). Horrible exlerience especially it was a lomg distance flight with kids.

2.0 MediocreAnonymous, Dec 2025
PTY - POA
Read more Copa Airlines reviews

Horrible. No TV or any type of entertainment on board. Passwnger listening to/watching stuff on their own phone with no headphones making it noise and uncomfortable for everyone else, little/tiny food portions, old seats, useless wifi (cant access anything). Horrible exlerience especially it was a lomg distance flight with kids.

There should be a warning regarding the quality of the aircraft on the website as we reserve the tickets. There was no TV or any type of screen onboard. The wifi they offer is good for nothing. Traveling 9 hours straight with kids and no type of entetainment was horrible. I wish I had been informed prior so I could buy a ticket with another airline. The food was a joke too. A very tiny portion per passenger. They also charged $100 per checked bag. With United I used to pay $60. So, fair to say that I wont be flying Copa anymore. Their aircraft was super old, outdated, no entertainment, with nearly no onboard food.

I always enjoy flying Copa. There are very few airlines where I can enjoy a comfortable sleep in-flight. The snacks weren't the best, but they sufficed. The in-flight entertainment was fantastic, and I crossed another movie off my watch list.

Very strict carry on rules meant most of the plane had to gate check their luggage. As is often the case had things that were broken because of this, but I appreciated not being charged to gate check. Otherwise good flight and great crew once on the plane

Simply as follows:- First, there was no vegetarian option for the meal Second, only 2 washrooms for the entire economy class.

I liked the meatloaf the chicken was awful but the plane was on time and got there and the staff was nice.

Boarding was quick & efficient; they gave boarding groups due priority; staff & air crew were very cordial and helpful, pleasant flight.

We had a great flight just wished they had a tv so we can see a movie that would of made my trip excellent.

the food served was an embarrassment. No connection for charging the cellphone... What a crappy airline.

I selected first class expecting excetional service. It was mediocre at best. The food service was cold, meal choices was poor and on one leg they did provide dessert. I did enjoy the lay day seat but the movies were old and nothing current. Boarding the plane is always hot. So boarding is quite warm until your in the air. I took a small personal air fan. Update the meals and movies.

Everything you need to know for your flight from Dulles Intl to Porto Alegre

Information on your arrival and departure airports

Washington Dulles Airport (IAD)
Porto Alegre (POA)