WAS - POA

$485 Find Cheap Flights from Washington, D.C. to Porto Alegre

This is the cheapest round-trip 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 10/31. 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

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 22% 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.

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

Fri, Oct 31 - Wed, Nov 12
Copa Airlines Logo
2:13 am - 12:30 amIAD-POA
21h 17m1 stop
Copa Airlines Logo
1:35 am - 11:33 pmPOA-IAD
23h 58m1 stop
$485Copa Airlines
Find Deal
Wed, Nov 12 - Fri, Nov 21
Copa Airlines Logo
1:13 am - 12:30 amIAD-POA
21h 17m1 stop
Copa Airlines Logo
1:35 am - 11:33 pmPOA-IAD
23h 58m1 stop
$561Copa Airlines
Find Deal
Mon, Sep 29 - Sun, Oct 5
Copa Airlines Logo
9:35 am - 12:20 amIAD-POA
13h 45m1 stop
Copa Airlines Logo
1:25 am - 12:30 amPOA-IAD
24h 05m1 stop
$581Copa Airlines
Find Deal
Sun, Oct 26 - Sun, Nov 9
Copa Airlines Logo
2:25 am - 12:20 amIAD-POA
20h 55m1 stop
Copa Airlines Logo
1:35 am - 11:33 pmPOA-IAD
23h 58m1 stop
$595Copa Airlines
Find Deal
Sat, Nov 1 - Thu, Nov 13
United Airlines Logo
10:35 pm - 4:20 pmIAD-POA
40h 45m2 stops
United Airlines Logo
3:25 pm - 6:35 amPOA-IAD
17h 10m1 stop
$735United Airlines
Find Deal
Sat, Nov 1 - Thu, Nov 13
United Airlines Logo
10:35 pm - 2:20 pmIAD-POA
38h 45m2 stops
United Airlines Logo
3:25 pm - 8:51 pmPOA-IAD
31h 26m2 stops
$740United Airlines
Find Deal
Mon, Sep 29 - Mon, Oct 6
LATAM Airlines Logo
12:35 pm - 11:35 pmIAD-POA
34h 00m2 stops
LATAM Airlines Logo
7:20 am - 12:12 amPOA-IAD
17h 52m2 stops
$779LATAM Airlines
Find Deal
Mon, Oct 27 - Mon, Nov 10
GOL Logo
11:41 am - 5:50 pmIAD-POA
29h 09m2 stops
GOL Logo
5:10 am - 1:15 pmPOA-IAD
34h 05m2 stops
$849GOL
Find Deal
Sat, Oct 18 - Sat, Oct 25
 Logo
4:41 pm - 12:20 amIAD-POA
30h 39m1 stop
 Logo
3:45 pm - 2:15 pmPOA-IAD
23h 30m2 stops
Sat, Oct 18 - Fri, Oct 24
 Logo
4:41 pm - 12:20 amIAD-POA
30h 39m1 stop
 Logo
1:25 am - 8:53 pmPOA-IAD
20h 28m2 stops

Everything you should know

Top airlines
Copa Airlines
Cheapest • from $485 (round-trip)
Copa Airlines
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
October
Cheapest • 38% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$485
Copa Airlines
Fri 10/31Wed 11/12
IAD - POA • 1 stop
Cheapest one-way
Multiple Airlines
Thu 9/4
WAS - POA • multi-stop
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!
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.

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 October, where tickets cost $465 (return) on average. On the other hand, the most expensive months are December and March, where the average cost of round-trip tickets is $1,335 and $896 respectively.

Good to know

Low seasonFebruary
Cheapest flight$485
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly with an average 78% 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 $485 for a round-trip ticket.

  • 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, and oneworld are the airline alliances operating flights between Washington, D.C. and Porto Alegre, with Star Alliance being the most commonly used for this route.

  • 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 airline 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.
7.6
Copa AirlinesOverall score based on 1526 reviews
7.8Boarding
8.1Crew
6.8Entertainment
7.4Comfort
6.8Food
Airline reviews

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.

10.0 ExcellentNeil, Aug 2025PTY - BGI
Read more Copa Airlines reviews

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.

Cops Airlines is fantastic! The level of care and professionalism provided by the entire crew was top rate.

The flighr attandants were very rude they ignored me didnt offer me anything to drink throughoit the 4 hour flight i feel i was targeted and ignored because i was a darkskin latino man.

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

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

Seats not reclining, no vegetarian food option, no snacks. 7.5 hr flight should have been more comfortable. Luggage limits are unusually small. Will never fly Copa again and will tell friends and family to avoid this airline.

It was ok. However, the food was quite poor since I don't eat pasta.

Enforce the boarding process by group numbers. Tell people to stay seated during the meal/drink distribution. It took forever to get food and drinks because people would not stay out the isle and let the crew do their jobs. Everyone wanted to go to the bathroom forcing the crew to enter and leave the isle constantly so people can pass. Tell people to keep their electronics off speaker mode. No one wants to hear phone conversations and music playing.

Placed us in the last rear row of the plane so could not recline seats because of the rear wall, and also made it more of a tight space when the passenger in front reclined their seat. While understand seat assignments, every passenger should be afforded a reclining seat. The odor control scent from the restrooms was overwhelming strong. My wife and I could not deal with it, and she suffered a terrible headache as a result. I kept getting hit by the crew since I was on the ilse seat. No apologies, nothing. They made me feel like I was supposed to take the beating for a 3 hr flight.

There was no individual at the front check in when I arrived. I waited for at least 15 minutes and walked around asking security/janitors if they could help and they did not have a solution. So I had to take my checked bag through security and they threw away some of my items. I ended up making it to the gate only a few minutes before it closed due to my waiting for an agent at check in.

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.