IAD - POA

$350 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 5/31. 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
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Everything you should know

Cheapest round-trip
$549
Copa Airlines
Tue 4/28Tue 5/5
IAD - POA • 1 stop
Cheapest one-way
$350
LATAM Airlines
Sun 5/31
IAD - POA • 2 stops
Top airlines
Copa Airlines
Cheapest • from $549 (round-trip)
Copa Airlines
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and Porto Alegre. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Panama City (PTY)
Cheapest • Avg $718 (round-trip)
Panama City (PTY)
Shortest trip • 14h 01m (one-way)
Insights
Insights
Insights
Insights
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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

Tue, Apr 28 - Tue, May 5
Copa Airlines Logo
2:21 am - 12:20 am
IAD
-
POA
20h 59m
1 stop
Copa Airlines Logo
1:20 am - 12:33 am
POA
-
IAD
24h 13m
1 stop
$549Copa Airlines
Sun, Apr 12 - Mon, Apr 27
LATAM Airlines Logo
12:47 pm - 6:15 am
IAD
-
POA
16h 28m
2 stops
LATAM Airlines Logo
7:25 am - 12:42 am
POA
-
IAD
18h 17m
2 stops
$682LATAM Airlines
Mon, May 4 - Tue, May 19
American Airlines Logo
7:00 am - 3:35 pm
IAD
-
POA
31h 35m
2 stops
American Airlines Logo
6:25 pm - 5:09 pm
POA
-
IAD
23h 44m
2 stops
$736American Airlines
Thu, Apr 30 - Wed, May 6
Copa Airlines Logo
4:33 pm - 12:20 am
IAD
-
POA
30h 47m
1 stop
Copa Airlines Logo
1:20 am - 4:21 am
POA
-
IAD
28h 01m
1 stop
$743Copa Airlines
Sun, Apr 12 - Sun, Apr 26
Copa Airlines Logo
9:32 am - 12:20 am
IAD
-
POA
13h 48m
1 stop
Copa Airlines Logo
1:35 am - 12:34 am
POA
-
IAD
23h 59m
1 stop
$748Copa Airlines
Sun, May 3 - Tue, May 19
Multiple Airlines Logo
2:21 am - 12:20 am
IAD
-
POA
20h 59m
1 stop
Multiple Airlines Logo
11:05 am - 5:20 am
POA
-
IAD
19h 15m
2 stops
$750Multiple Airlines
Fri, Sep 11 - Fri, Sep 25
GOL Logo
2:46 pm - 11:55 pm
IAD
-
POA
32h 09m
2 stops
GOL Logo
7:40 pm - 2:15 pm
POA
-
IAD
19h 35m
2 stops
$789GOL
Mon, May 4 - Mon, May 18
Copa Airlines Logo
4:38 pm - 12:20 am
IAD
-
POA
30h 42m
1 stop
Copa Airlines Logo
1:20 am - 4:21 am
POA
-
IAD
28h 01m
1 stop
$823Copa Airlines
Fri, Sep 11 - Fri, Sep 25
LATAM Airlines Logo
6:00 am - 11:15 am
IAD
-
POA
28h 15m
2 stops
LATAM Airlines Logo
4:45 am - 6:33 pm
POA
-
IAD
38h 48m
2 stops
$840LATAM Airlines
Thu, Apr 30 - Thu, May 7
Multiple Airlines Logo
4:33 pm - 12:20 am
IAD
-
POA
30h 47m
1 stop
Multiple Airlines Logo
8:55 pm - 12:33 am
POA
-
IAD
28h 38m
2 stops
$850Multiple 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.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Porto Alegre?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Porto Alegre departing in April.
Find deals

Good to know

Low seasonOctober
Cheapest flight$350
Best time to beat the crowds with an average 53% drop in price.
Most popular time to fly and prices are also 45% lower on average.
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 $350 for a one-way ticket and $549 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 1569 reviews
6.8Food
8.1Crew
7.4Comfort
6.8Entertainment
7.8Boarding
Airline reviews

Do not book it’s a scam! They stole $1200 from me

2.0 MediocreTalicia, Mar 2026
PTY - RDU
Read more Copa Airlines reviews

Do not book it’s a scam! They stole $1200 from me

Flight got delayed; had to go through security three times.

Copa staff at PTY and one particular crew member were unhelpful & rude.

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.

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)