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Cheap flights from Washington, D.C. to Porto Alegre from $240

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Porto Alegre departing on 3/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
11:30 pm - 4:25 pm
IAD
-
POA
15h 55m
1 stop
United Airlines Logo
3:30 pm - 6:40 am
POA
-
IAD
16h 10m
1 stop
$626United Airlines
Sun, Mar 15 - Thu, Mar 19
United Airlines Logo
8:30 am - 4:25 pm
IAD
-
POA
30h 55m
2 stops
United Airlines Logo
3:30 pm - 6:40 am
POA
-
IAD
16h 10m
1 stop
$630United Airlines
Sun, Mar 15 - Thu, Mar 19
United Airlines Logo
6:15 am - 2:25 pm
IAD
-
POA
31h 10m
2 stops
United Airlines Logo
2:05 pm - 4:09 pm
POA
-
IAD
27h 04m
2 stops
$640United Airlines
Sun, Mar 15 - Thu, Mar 19
LATAM Airlines Logo
6:01 am - 6:30 am
IAD
-
POA
23h 29m
2 stops
LATAM Airlines Logo
10:00 am - 11:52 am
POA
-
IAD
26h 52m
2 stops
$714LATAM Airlines
Sun, Mar 8 - Tue, Mar 31
Avianca Logo
6:45 am - 11:00 am
IAD
-
POA
27h 15m
2 stops
Avianca Logo
11:40 am - 2:15 pm
POA
-
IAD
51h 35m
2 stops
$892Avianca
Sun, Mar 15 - Thu, Mar 19
United Airlines Logo
11:30 pm - 4:25 pm
IAD
-
POA
15h 55m
1 stop
United Airlines Logo
5:10 pm - 11:48 am
POA
-
IAD
19h 38m
2 stops
$1,016United Airlines
Sun, Mar 8 - Tue, Mar 31
Avianca Logo
5:45 am - 11:00 am
IAD
-
POA
27h 15m
2 stops
Avianca Logo
1:40 pm - 2:15 pm
POA
-
IAD
25h 35m
2 stops
$1,017Avianca
Sun, Feb 15 - Sat, Mar 21
Copa Airlines Logo
9:29 am - 12:25 am
IAD
-
POA
13h 56m
1 stop
Copa Airlines Logo
1:25 am - 3:02 pm
POA
-
IAD
14h 37m
1 stop
$1,102Copa Airlines
Sun, Mar 8 - Mon, Mar 30
LATAM Airlines Logo
7:52 pm - 2:05 pm
IAD
-
POA
16h 13m
2 stops
LATAM Airlines Logo
7:30 pm - 11:44 am
POA
-
IAD
18h 14m
2 stops
$1,184LATAM Airlines
Fri, Feb 20 - Sun, Mar 1
Multiple Airlines Logo
10:30 pm - 11:45 am
IAD
-
POA
35h 15m
2 stops
Multiple Airlines Logo
1:40 pm - 6:40 am
POA
-
IAD
18h 00m
1 stop
$1,188Multiple Airlines
Sun, Feb 15 - Sat, Mar 21

LATAM Airlines flights from Washington, D.C. to Porto Alegre

Our best LATAM Airlines deals on Washington, D.C. to Porto Alegre flight tickets
LATAM Airlines
Mar 8
IAD6:01 amWashington, D.C. Dulles Intl
23h 29m
2 stops
POA6:30 amPorto Alegre Salgado Filho
Mar 31
POA10:00 amPorto Alegre Salgado Filho
26h 52m
2 stops
IAD11:52 amWashington, D.C. Dulles Intl
$714
LATAM Airlines
Feb 20
IAD3:42 pmWashington, D.C. Dulles Intl
20h 23m
2 stops
POA2:05 pmPorto Alegre Salgado Filho
Mar 1
POA7:30 pmPorto Alegre Salgado Filho
18h 14m
2 stops
IAD11:44 amWashington, D.C. Dulles Intl
$1,184

Copa Airlines flights from Washington, D.C. to Porto Alegre

Our best Copa Airlines deals on Washington, D.C. to Porto Alegre flight tickets
Copa Airlines
Mar 8
IAD9:29 amWashington, D.C. Dulles Intl
13h 56m
1 stop
POA12:25 amPorto Alegre Salgado Filho
Mar 30
POA1:25 amPorto Alegre Salgado Filho
14h 37m
1 stop
IAD3:02 pmWashington, D.C. Dulles Intl
$1,102
Copa Airlines
Apr 7
IAD2:21 amWashington, D.C. Dulles Intl
20h 59m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Apr 28
POA1:35 amPorto Alegre Salgado Filho
23h 59m
1 stop
IAD12:34 amWashington, D.C. Dulles Intl
$1,225
Copa Airlines
Feb 19
IAD1:18 amWashington, D.C. Dulles Intl
21h 07m
1 stop
POA12:25 amPorto Alegre Salgado Filho
Feb 28
POA1:30 amPorto Alegre Salgado Filho
14h 30m
1 stop
IAD2:00 pmWashington, D.C. Dulles Intl
$1,413

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Porto Alegre that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 3, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Sun 3/15

11:30 pm-4:25 pm

1 stop15h 55m

Porto Alegre Salgado Filho

Thu 3/19

3:30 pm-6:40 am

1 stop16h 10m

$626

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Sun 3/15

8:30 am-4:25 pm

2 stops30h 55m

Porto Alegre Salgado Filho

Thu 3/19

3:30 pm-6:40 am

1 stop16h 10m

$630

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Sun 3/15

6:15 am-2:25 pm

2 stops31h 10m

Porto Alegre Salgado Filho

Thu 3/19

2:05 pm-4:09 pm

2 stops27h 04m

$640

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Sun 3/8

6:01 am-6:30 am

2 stops23h 29m

Porto Alegre Salgado Filho

Tue 3/31

10:00 am-11:52 am

2 stops26h 52m

$714

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Sun 3/15

6:45 am-11:00 am

2 stops27h 15m

Porto Alegre Salgado Filho

Thu 3/19

11:40 am-2:15 pm

2 stops51h 35m

$892

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Sun 3/8

11:30 pm-4:25 pm

1 stop15h 55m

Porto Alegre Salgado Filho

Tue 3/31

5:10 pm-11:48 am

2 stops19h 38m

$1,016

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Sun 2/15

5:45 am-11:00 am

2 stops27h 15m

Porto Alegre Salgado Filho

Sat 3/21

1:40 pm-2:15 pm

2 stops25h 35m

$1,017

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Sun 3/8

9:29 am-12:25 am

1 stop13h 56m

Porto Alegre Salgado Filho

Mon 3/30

1:25 am-3:02 pm

1 stop14h 37m

$1,102

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Fri 2/20

7:52 pm-2:05 pm

2 stops16h 13m

Porto Alegre Salgado Filho

Sun 3/1

7:30 pm-11:44 am

2 stops18h 14m

$1,184

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Sun 2/15

10:30 pm-11:45 am

2 stops35h 15m

Porto Alegre Salgado Filho

Sat 3/21

1:40 pm-6:40 am

1 stop18h 00m

$1,188

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to Porto Alegre from

How to get the cheapest flight ticket from Washington, D.C. to Porto Alegre

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Porto Alegre?

The cheapest month to fly to Porto Alegre from Washington, D.C. is in September. Flight prices, which tend to average around $485, are often lower during this time because this is during the off-season. If you’re not able to fly to Porto Alegre in September, then May is your next best option. Flight prices from Washington, D.C. to Porto Alegre during May average around $555.

Can stopping save me money on Washington, D.C. to Porto Alegre flights?

You could potentially save up to 25% on your flight if you consider stops on a Washington, D.C. to Porto Alegre flight.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Porto Alegre according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Porto Alegre (WAS to POA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Porto Alegre

Fastest flight time

13h 48m

Direct flights

None
The fastest flight from Washington, D.C. to Porto Alegre takes 13h 48m
There are no direct flights from Washington, D.C. to Porto Alegre. There are no popular flight routes from Washington, D.C. to Porto Alegre.
Search flight deals

  • How far is Washington, D.C. to Porto Alegre Salgado Filho by plane?

    The straight-line distance from Washington, D.C. to Porto Alegre Salgado Filho is 5041.2 mi. By plane, this route typically takes 13h 48m.

  • When did momondo last update prices for flights from Washington, D.C. to Porto Alegre Salgado Filho Airport?

    Prices for flights from Washington, D.C. to Porto Alegre Salgado Filho Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington, D.C. to Porto Alegre Salgado Filho Airport?

  • How old do you have to be to fly from Washington, D.C. to Porto Alegre Salgado Filho Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Porto Alegre Salgado Filho Airport.

  • What documentation or ID do you need to fly to Porto Alegre Salgado Filho Airport?

    The travel and health documents required for your trip to Porto Alegre Salgado Filho Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Porto Alegre Salgado Filho Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Washington, D.C. to Porto Alegre?

Best airlines flying from Washington, D.C. to Porto Alegre

Compare and see reviews for airlines that fly from Washington, D.C. to Porto Alegre with momondo
Airline
Rating
Free Cancellation
Price
Copa AirlinesPriceFrom $428Free CancellationRating
7.6
1,558 reviews
Search Copa Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Porto Alegre?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Porto Alegre. momondo saves you time and could save you money on your trip.

Can I find flights from Washington, D.C. to Porto Alegre with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Porto Alegre from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to Porto Alegre?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Porto Alegre from Washington, D.C..

I’m not ready to book a flight from Washington, D.C. to Porto Alegre right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to Porto Alegre now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Porto Alegre and let you know when they change.

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