WAS - POA

$290 Find Cheap Flights from Washington, D.C. 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 Washington, D.C. to Porto Alegre departing on 3/23. 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
$682
LATAM Airlines
Sun 4/12Mon 4/27
IAD - POA • 2 stops
Cheapest one-way
$290
United Airlines
Mon 3/23
IAD - POA • 1 stop
Top airlines
LATAM Airlines
Cheapest • from $682 (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 Washington, D.C. and Porto Alegre. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Panama City (PTY)
Cheapest • Avg $750 (round-trip)
Panama City (PTY)
Shortest trip • 14h 05m (one-way)
Insights
Insights
Insights
Insights
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 Washington, D.C. to Porto Alegre (WAS-POA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington, D.C. 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 Washington, D.C. to Porto Alegre

Sun, Apr 12 - Mon, Apr 27
LATAM Airlines Logo
10:06 am - 6:15 am
IAD
-
POA
19h 09m
2 stops
LATAM Airlines Logo
7:25 am - 12:42 am
POA
-
IAD
18h 17m
2 stops
$682LATAM Airlines
Sun, Mar 15 - Sun, May 17
LATAM Airlines Logo
6:01 am - 6:30 am
IAD
-
POA
23h 29m
2 stops
LATAM Airlines Logo
5:50 pm - 12:23 pm
POA
-
IAD
19h 33m
2 stops
$684LATAM Airlines
Mon, Mar 16 - Sun, May 17
LATAM Airlines Logo
7:29 pm - 5:05 pm
IAD
-
POA
20h 36m
2 stops
LATAM Airlines Logo
7:05 pm - 6:53 pm
POA
-
IAD
24h 48m
2 stops
$688LATAM Airlines
Sat, Mar 14 - Tue, Mar 17
LATAM Airlines Logo
5:25 pm - 6:30 am
IAD
-
POA
36h 05m
2 stops
LATAM Airlines Logo
5:55 pm - 12:39 pm
POA
-
IAD
19h 44m
2 stops
$692LATAM Airlines
Fri, May 1 - Mon, Jun 1
Multiple Airlines Logo
6:50 am - 9:50 am
IAD
-
POA
26h 00m
2 stops
Multiple Airlines Logo
9:05 pm - 5:20 am
POA
-
IAD
33h 15m
2 stops
$715Multiple Airlines
Fri, May 1 - Mon, Jun 1
Multiple Airlines Logo
6:50 am - 9:50 am
IAD
-
POA
26h 00m
2 stops
Multiple Airlines Logo
5:20 am - 2:15 pm
POA
-
IAD
33h 55m
3 stops
$721Multiple Airlines
Sat, Mar 14 - Fri, Apr 24
LATAM Airlines Logo
5:25 pm - 6:30 am
IAD
-
POA
36h 05m
2 stops
LATAM Airlines Logo
6:45 am - 12:05 pm
POA
-
IAD
30h 20m
2 stops
$777LATAM Airlines
Mon, Apr 6 - Mon, Apr 20
Copa Airlines Logo
2:21 am - 12:20 am
IAD
-
POA
20h 59m
1 stop
Copa Airlines Logo
1:35 am - 3:06 pm
POA
-
IAD
14h 31m
1 stop
$784Copa Airlines
Sat, Mar 14 - Sun, May 3
LATAM Airlines Logo
5:25 pm - 6:30 am
IAD
-
POA
36h 05m
2 stops
LATAM Airlines Logo
7:05 pm - 6:08 pm
POA
-
IAD
24h 03m
2 stops
$788LATAM Airlines
Sat, Mar 14 - Sun, May 17
LATAM Airlines Logo
5:25 pm - 6:30 am
IAD
-
POA
36h 05m
2 stops
LATAM Airlines Logo
5:50 pm - 12:23 pm
POA
-
IAD
19h 33m
2 stops
$791LATAM Airlines
Booking Insights

KAYAK's insights & trends for Washington, D.C. to Porto Alegre flights

Get data-powered insights and trends into flights from Washington, D.C. 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, D.C. 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, D.C. to Porto Alegre were found on LATAM Airlines ($682) and Copa Airlines ($784).

Good to know

Low seasonSeptember
Cheapest flight$290
Best time to beat the crowds with an average 35% drop in price.
Most popular time to fly with an average 73% increase in price.
Flight from Washington Dulles Airport to Porto Alegre

When to book flights from Washington, D.C. to Porto Alegre

Are your dates flexible? Find out the best times to travel from Washington, D.C. 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 flights from Washington, D.C. to Porto Alegre

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. to Porto Alegre was $290 for a one-way ticket and $682 for a round-trip.

  • Do I need a passport to fly between Washington, D.C. and Porto Alegre?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington, D.C. and on arrival in Porto Alegre.

  • Which airports will I be using when flying from Washington, D.C. to Porto Alegre?

    When flying out of Washington, D.C. you will be using one of these airports: Washington, D.C. Reagan-National or Washington, D.C. Dulles Intl. You will be landing at Porto Alegre Salgado Filho.

  • Which aircraft models fly most regularly from Washington, D.C. to Porto Alegre?

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

  • Which airline alliances offer flights from Washington, D.C. to Porto Alegre?

    Star Alliance is the only airline alliance operating flights between Washington, D.C. and Porto Alegre.

  • Which is the best airline for flights from Washington, D.C. to Porto Alegre, Copa Airlines or United Airlines?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Porto Alegre are Copa Airlines and United Airlines. With an average price for the route of $656 and an overall rating of 7.5, Copa Airlines is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,171 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Washington, D.C. 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, D.C. to Porto Alegre.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington, D.C. 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, D.C. 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, D.C. 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, D.C. with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington, D.C. 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, D.C. up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Washington, D.C. 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 Washington, D.C. 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 1559 reviews
6.8Food
7.8Boarding
7.4Comfort
8.1Crew
6.8Entertainment
Airline reviews

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

2.0 MediocreAnonymous, Feb 2026
PTY - JFK
Read more Copa Airlines reviews

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

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.

Very happy with my flight. I would definitely recommend it.

Did upgrade, travel in business it was great (more room I could sleep)

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Sat next to a one year old. She crawled all over the place and made me laugh.

The Crew and the food was the worst I ever had in Business Class. First they told us there were no space for carry on. It was plenty of space over our 2 row seats, we had to ask to let us travel with it which was accepted. They were aware that we had to run for the connection due to the previous flight delay. Have us one hour waiting for more customers and not even offer a glass of water. Then started the service and they started to serve other passengers drinks in business and did not offer any drinks until they serve our pre ordered meal and I ask for something to drink. I had to wait until they finished to serve all passengers until Inget something. The crew was the worts I ever had for Business Class in my life.

Not great experience - we were super late boarding due to issues with aircraft. Then when we finally all got onboard and seated and they started taxiing out to the runway they just stopped then turned around and went back to the airport. Apparently the crew “ran out of time” to legally fly us. They mentioned that they were about 2 minutes away from taking off. I understand the rules and safety but kinda wonder why they would have bothered boarding us in the first place? Had to go all the way back and de plane and then wait in a HUGE line to get a hotel (this is somewhere around 2:30am) finally got to hotel by Uber (no shuttle after 20min so gave up) and they ended up putting us all back on the same aircraft at 10am next morning so got about 2.5 hours sleep. They did give us. $250 credit, but it was a São Paulo Brazil flight out of Dulles. The flight and everything was fine.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

7 hours delayed due to operational issues on United’s end. Basically laziness.

Everything you need to know for your flight from Washington, D.C. to Porto Alegre

Information on your arrival and departure airports