WAS - POA

$340 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 8/15. 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
$570
Copa Airlines
Mon 9/14Sun 9/27
IAD - POA • 1 stop
Cheapest one-way
$340
Copa Airlines
Sat 8/15
IAD - POA • 1 stop
Top airlines
Cheapest • from $570 (round-trip)
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
Cheapest • Avg $744 (round-trip)
Shortest trip • 14h 20m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 47% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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 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

Mon, Sep 14 - Sun, Sep 27
Copa Airlines Logo
2:25 am - 12:20 am
IAD
-
POA
20h 55m
1 stop
Copa Airlines Logo
1:20 am - 4:20 am
POA
-
IAD
28h 00m
1 stop
$570Copa Airlines
Tue, Sep 15 - Sun, Sep 27
Copa Airlines Logo
9:35 am - 12:20 am
IAD
-
POA
13h 45m
1 stop
Copa Airlines Logo
1:20 am - 4:20 am
POA
-
IAD
28h 00m
1 stop
$650Copa Airlines
Tue, Sep 15 - Mon, Sep 28
LATAM Airlines Logo
4:00 pm - 5:00 pm
IAD
-
POA
24h 00m
2 stops
LATAM Airlines Logo
6:40 am - 11:51 am
POA
-
IAD
30h 11m
2 stops
$731LATAM Airlines
Tue, Sep 15 - Mon, Sep 28
LATAM Airlines Logo
4:00 pm - 5:00 pm
IAD
-
POA
24h 00m
2 stops
LATAM Airlines Logo
6:40 am - 11:51 am
POA
-
IAD
30h 11m
2 stops
$732LATAM Airlines
Tue, Sep 15 - Sun, Sep 27
Copa Airlines Logo
4:34 pm - 12:20 am
IAD
-
POA
30h 46m
1 stop
Copa Airlines Logo
1:20 am - 4:20 am
POA
-
IAD
28h 00m
1 stop
$755Copa Airlines
Thu, Sep 10 - Thu, Sep 24
Copa Airlines Logo
2:25 am - 12:20 am
IAD
-
POA
20h 55m
1 stop
Copa Airlines Logo
1:20 am - 12:32 am
POA
-
IAD
24h 12m
1 stop
$760Copa Airlines
Fri, Sep 11 - Thu, Sep 24
Copa Airlines Logo
4:34 pm - 12:20 am
IAD
-
POA
30h 46m
1 stop
Copa Airlines Logo
1:20 am - 12:32 am
POA
-
IAD
24h 12m
1 stop
$780Copa Airlines
Mon, Nov 9 - Wed, Nov 11
LATAM Airlines Logo
12:30 pm - 12:40 am
IAD
-
POA
34h 10m
2 stops
LATAM Airlines Logo
12:35 pm - 2:41 pm
POA
-
IAD
28h 06m
2 stops
$799LATAM Airlines
Sat, Aug 15 - Sat, Aug 22
Multiple Airlines Logo
4:50 pm - 11:15 am
IAD
-
POA
41h 25m
2 stops
Multiple Airlines Logo
8:05 pm - 3:17 pm
POA
-
IAD
44h 12m
2 stops
$824Multiple Airlines
Mon, Jun 22 - Sat, Jun 27
Copa Airlines Logo
2:21 am - 12:20 am
IAD
-
POA
20h 59m
1 stop
Copa Airlines Logo
1:20 am - 4:21 am
POA
-
IAD
28h 01m
1 stop
$830Copa 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.

How much is a round-trip flight from Washington, D.C. 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. to Porto Alegre departing in September.

What is the cheapest month to fly from Washington, D.C. to Porto Alegre?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. to Porto Alegre, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. to Porto Alegre is December, where tickets cost $324 (return) on average. On the other hand, the most expensive months are May and February, where the average cost of round-trip tickets is $1,229 and $687 respectively.

Good to know

Low seasonSeptember
Cheapest flight$340
Best time to beat the crowds with an average 41% drop in price.
Most popular time to fly with an average 54% 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 $340 for a one-way ticket and $570 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 $687 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 1579 reviews
7.4Comfort
6.8Entertainment
6.8Food
7.7Boarding
8.1Crew
Airline reviews

I had to run from the end of terminal one to the end of terminal two to make the connecting flight....probably a kilometer. No electric carts were available. I'm 76 and literally had to run to make the connection at the last minute. The connecting time was absolutely unrealistic. When Last Call was announced, I tried to get other Copa gate staff to call Gate 221 to let them know I was on my way, but they said no. I came within 1 minute of missing the flight.

2.0 MediocreFred, May 2026
UIO - PTY
Read more Copa Airlines reviews

I had to run from the end of terminal one to the end of terminal two to make the connecting flight....probably a kilometer. No electric carts were available. I'm 76 and literally had to run to make the connection at the last minute. The connecting time was absolutely unrealistic. When Last Call was announced, I tried to get other Copa gate staff to call Gate 221 to let them know I was on my way, but they said no. I came within 1 minute of missing the flight.

Friendly crew, good food options, food not the best and seats not as comfy but that’s typical.

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.

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

Some of the Air hostesses are not that friendly. Need improvement

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.

As always, Copa Airlines is great to fly on. The flights are always on time, the staff are pleasant and helpful and it's always a wonderful flying experience.

Our flight was canceled same day and we were never informed. Had to pay more and worse seating on another airline.

Did not like that we couldn't complete check in on-line without providing pictures of our passports. Worry about identity theft. We had no delays and boarding was handled In an efficient manner.

Excellent! I got to Munich and was transferred to my Lufthansa flight quickly, in 15 to 20 minutes, so I did not miss my flight. However, I had checked my overhead bag at the boarding gate in Tampa. That got to Tunis the next day. That is to be expected.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

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

Information on your arrival and departure airports