WAS - POA

$358 Find Cheap Flights from Washington, D.C. to Porto Alegre - Compare and Save

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 8/31. 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

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Everything you should know

Cheapest round-trip
$810
Copa Airlines
Tue 9/15Sun 9/27
IAD - POA • 1 stop
Cheapest one-way
$358
Multiple Airlines
Mon 8/31
IAD - POA • 3 stops
Top airlines
Cheapest • from $810 (round-trip)
Best reviews • 7.6 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
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Insights
Top layover airports
Cheapest • Avg $866 (round-trip)
Shortest trip • 14h 36m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

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
$810Copa Airlines
Wed, Sep 16 - Tue, Sep 22
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
$810Copa Airlines
Wed, Sep 16 - Wed, Sep 23
LATAM Airlines Logo
6:07 pm - 6:45 pm
IAD
-
POA
23h 38m
2 stops
LATAM Airlines Logo
2:15 pm - 2:11 pm
POA
-
IAD
24h 56m
2 stops
$842LATAM Airlines
Tue, Sep 15 - Mon, Sep 28
LATAM Airlines Logo
6:26 pm - 5:00 pm
IAD
-
POA
21h 34m
2 stops
LATAM Airlines Logo
10:05 am - 11:45 am
POA
-
IAD
26h 40m
2 stops
$883LATAM Airlines
Thu, Nov 12 - Sat, Nov 14
Copa Airlines Logo
1:16 am - 12:25 am
IAD
-
POA
21h 09m
1 stop
Copa Airlines Logo
1:30 am - 1:58 pm
POA
-
IAD
14h 28m
1 stop
$905Copa Airlines
Sat, Aug 15 - Wed, Aug 19
LATAM Airlines Logo
7:59 pm - 9:15 pm
IAD
-
POA
48h 16m
2 stops
LATAM Airlines Logo
7:35 pm - 9:20 am
POA
-
IAD
38h 45m
2 stops
$914LATAM Airlines
Fri, Nov 13 - Sun, Nov 15
Avianca Logo
2:35 pm - 10:15 am
IAD
-
POA
17h 40m
2 stops
Avianca Logo
7:35 pm - 4:30 am
POA
-
IAD
34h 55m
2 stops
$926Avianca
Fri, Oct 30 - Sat, Oct 31
GOL Logo
6:45 am - 10:15 am
IAD
-
POA
26h 30m
2 stops
GOL Logo
3:20 pm - 2:15 pm
POA
-
IAD
23h 55m
2 stops
$979GOL
Tue, Sep 15 - Mon, Sep 28
Multiple Airlines Logo
6:50 am - 3:35 pm
IAD
-
POA
31h 45m
2 stops
Multiple Airlines Logo
8:55 pm - 5:20 am
POA
-
IAD
33h 25m
3 stops
$981Multiple Airlines
Fri, Nov 13 - Sun, Nov 15
Multiple Airlines Logo
5:45 am - 7:15 am
IAD
-
POA
23h 30m
2 stops
Multiple Airlines Logo
9:45 am - 1:15 pm
POA
-
IAD
29h 30m
3 stops
$1,060Multiple 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.

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 January, where tickets cost $0 (return) on average. On the other hand, the most expensive months are August and May, where the average cost of round-trip tickets is $1,378 and $1,371 respectively.

Good to know

Low season

September

Cheapest flight

$358
Best time to beat the crowds with an average 51% drop in price.
Most popular time to fly with an average 30% 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 5 days, the lowest price for a flight from Washington, D.C. to Porto Alegre was $358 for a one-way ticket and $810 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 $880 and an overall rating of 7.6, 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.
7.6
Copa AirlinesOverall score based on 1564 reviews
8.1Crew
6.8Entertainment
7.8Boarding
6.9Food
7.4Comfort
Airline reviews

We where skipped for this flight will not head to Panama until tonight..

2.0 MediocreRussell, Jul 2026
LAX - PTY
Read more Copa Airlines reviews

We where skipped for this flight will not head to Panama until tonight..

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

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.

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.

The plane doesn’t have screens but you can use your decide for entertainment. Pack a snack too since they don’t offer any, and the meal is pretty small and you will get hungry

Boarding groups were called up in Spanish only. Luckily I know some of the language. They gave out grilled cheese sandwiches and a cup of fruit. I was very disappointed. I could only eat the cup of fruit because the only other option was vanilla pudding. The entertainment system and seating were great though.

As usual, the flight with normal legroom was not very comfortable, but the second flight was much better because we had paid for extra legroom. It was very nice to check our bags without an extra fee.

My flight was delayed so bad i missed u it so i just said never mind

Delayed 2 hours while stuck on the aircraft. If the luggage was properly loaded the first time we probably wouldn’t have been delayed at all

1. Everything was satisfactory concerning the flight. 2. Can't think of what could be better right now.

Onboard staff was courteous, helpful, responsive and friendly. The boarding process was disorganized, poorly communicated, and disheveled. Gate agents were yelling instead of using the PA system, didn’t communicate the timing delay of our flight, and created an atmosphere of chaos rather than order and communication. As far as I know, there was no reason for their. I would hate to see how it operated under extreme conditions. I’ve never seen United Airlines operations in such a state.

The flight did not have its customary snacks during the flight. Apparently they were never loaded on the plane.

Worst service- attendants dont want to help and sat us in front of bathroom

We sat on the hot plane for ours with very conflicting messages. Some (most?) of this may be due to the flight control staff, but we were also repeatedly getting "we are leaving"/"we are not" messages. It was very uncomfortable

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.

Very friendly staff. The flight was on time. Need a bit heavy covers/blankets. It can get colder with a thin blanket.

Brutal delay of 24 hours on first floight the 3 hours in Chicago . Tiny seats , screaming child behind me kicking the seat … couldn’t be worse

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

Information on your arrival and departure airports