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Cheap flights from Washington, D.C. to Porto Alegre from $290

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 1/6. 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.
LATAM Airlines Logo
10:06 am - 9:20 am
IAD
-
POA
21h 14m2 stops
LATAM Airlines Logo
2:50 pm - 9:08 am
POA
-
IAD
20h 18m2 stops
$685LATAM Airlines
Fri, Feb 20 - Sun, Mar 1
LATAM Airlines Logo
10:06 am - 9:20 am
IAD
-
POA
21h 14m2 stops
LATAM Airlines Logo
2:05 pm - 9:08 am
POA
-
IAD
21h 03m2 stops
$689LATAM Airlines
Fri, Feb 20 - Sun, Mar 1
Copa Airlines Logo
8:29 am - 12:25 am
IAD
-
POA
13h 56m1 stop
Copa Airlines Logo
1:30 am - 11:32 pm
POA
-
IAD
24h 02m1 stop
$731Copa Airlines
Fri, Feb 20 - Sat, Feb 28
Multiple Airlines Logo
3:00 am - 7:40 am
IAD
-
POA
26h 40m3 stops
Multiple Airlines Logo
9:05 pm - 3:15 am
POA
-
IAD
32h 10m2 stops
$751Multiple Airlines
Wed, Jan 28 - Thu, Feb 5
Multiple Airlines Logo
3:00 am - 7:40 am
IAD
-
POA
26h 40m3 stops
Multiple Airlines Logo
9:00 pm - 3:10 am
POA
-
IAD
32h 10m3 stops
$758Multiple Airlines
Wed, Jan 28 - Thu, Feb 5
Delta Logo
6:20 am - 11:55 pm
IAD
-
POA
39h 35m2 stops
Delta Logo
6:00 pm - 11:44 am
POA
-
IAD
19h 44m2 stops
$785Delta
Sun, Jan 11 - Mon, Jan 26
Delta Logo
6:20 am - 12:40 am
IAD
-
POA
40h 20m2 stops
Delta Logo
6:40 am - 11:43 am
POA
-
IAD
31h 03m2 stops
$786Delta
Sun, Jan 11 - Tue, Jan 27
Multiple Airlines Logo
2:35 pm - 11:05 pm
IAD
-
POA
30h 30m2 stops
Multiple Airlines Logo
9:05 pm - 11:32 pm
POA
-
IAD
28h 27m2 stops
$799Multiple Airlines
Thu, Jan 29 - Thu, Feb 5
Multiple Airlines Logo
3:00 am - 10:00 am
IAD
-
POA
29h 00m3 stops
Multiple Airlines Logo
11:00 am - 4:25 am
POA
-
IAD
19h 25m2 stops
$811Multiple Airlines
Fri, Jan 23 - Sat, Jan 31
Copa Airlines Logo
1:18 am - 12:25 am
IAD
-
POA
21h 07m1 stop
Copa Airlines Logo
1:30 am - 11:32 pm
POA
-
IAD
24h 02m1 stop
$846Copa Airlines
Thu, Feb 19 - Sat, Feb 28

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
Feb 20
IAD10:06 amWashington, D.C. Dulles Intl
21h 14m
2 stops
POA9:20 amPorto Alegre Salgado Filho
Mar 1
POA2:50 pmPorto Alegre Salgado Filho
20h 18m
2 stops
IAD9:08 amWashington, D.C. Dulles Intl
$685
Find similar
LATAM Airlines
Feb 20
IAD10:06 amWashington, D.C. Dulles Intl
21h 14m
2 stops
POA9:20 amPorto Alegre Salgado Filho
Mar 1
POA2:05 pmPorto Alegre Salgado Filho
21h 03m
2 stops
IAD9:08 amWashington, D.C. Dulles Intl
$689
Find similar
LATAM Airlines
Feb 19
IAD10:06 amWashington, D.C. Dulles Intl
21h 09m
2 stops
POA9:15 amPorto Alegre Salgado Filho
Feb 24
POA8:10 pmPorto Alegre Salgado Filho
17h 25m
2 stops
IAD11:35 amWashington, D.C. Dulles Intl
$734
Find similar

Delta flights from Washington, D.C. to Porto Alegre

Our best Delta deals on Washington, D.C. to Porto Alegre flight tickets
Delta
Jan 11
IAD6:20 amWashington, D.C. Dulles Intl
39h 35m
2 stops
POA11:55 pmPorto Alegre Salgado Filho
Jan 26
POA6:00 pmPorto Alegre Salgado Filho
19h 44m
2 stops
IAD11:44 amWashington, D.C. Dulles Intl
$785
Find similar
Delta
Jan 11
IAD6:20 amWashington, D.C. Dulles Intl
40h 20m
2 stops
POA12:40 amPorto Alegre Salgado Filho
Jan 27
POA6:40 amPorto Alegre Salgado Filho
31h 03m
2 stops
IAD11:43 amWashington, D.C. Dulles Intl
$786
Find similar
Delta
Jan 11
IAD6:20 amWashington, D.C. Dulles Intl
40h 20m
2 stops
POA12:40 amPorto Alegre Salgado Filho
Jan 23
POA6:40 amPorto Alegre Salgado Filho
31h 03m
2 stops
IAD11:43 amWashington, D.C. Dulles Intl
$885
Find similar

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 December 18, 2025.
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

Fri 2/20

10:06 am-9:20 am

2 stops21h 14m

Porto Alegre Salgado Filho

Sun 3/1

2:50 pm-9:08 am

2 stops20h 18m

$685

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Fri 2/20

10:06 am-9:20 am

2 stops21h 14m

Porto Alegre Salgado Filho

Sun 3/1

2:05 pm-9:08 am

2 stops21h 03m

$689

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Fri 2/20

8:29 am-12:25 am

1 stop13h 56m

Porto Alegre Salgado Filho

Sat 2/28

1:30 am-11:32 pm

1 stop24h 02m

$731

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Wed 1/28

3:00 am-7:40 am

3 stops26h 40m

Porto Alegre Salgado Filho

Thu 2/5

9:05 pm-3:15 am

2 stops32h 10m

$751

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Wed 1/28

3:00 am-7:40 am

3 stops26h 40m

Porto Alegre Salgado Filho

Thu 2/5

9:00 pm-3:10 am

3 stops32h 10m

$758

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Sun 1/11

6:20 am-11:55 pm

2 stops39h 35m

Porto Alegre Salgado Filho

Mon 1/26

6:00 pm-11:44 am

2 stops19h 44m

$785

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Sun 1/11

6:20 am-12:40 am

2 stops40h 20m

Porto Alegre Salgado Filho

Tue 1/27

6:40 am-11:43 am

2 stops31h 03m

$786

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Thu 1/29

2:35 pm-11:05 pm

2 stops30h 30m

Porto Alegre Salgado Filho

Thu 2/5

9:05 pm-11:32 pm

2 stops28h 27m

$799

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Fri 1/23

3:00 am-10:00 am

3 stops29h 00m

Porto Alegre Salgado Filho

Sat 1/31

11:00 am-4:25 am

2 stops19h 25m

$811

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Thu 2/19

1:18 am-12:25 am

1 stop21h 07m

Porto Alegre Salgado Filho

Sat 2/28

1:30 am-11:32 pm

1 stop24h 02m

$846

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 typical price of a round-trip flight between Washington, D.C. and Porto Alegre?

What is the cheapest day to depart on your flight to Porto Alegre?

Our data shows that Sunday is the least expensive day to fly to Porto Alegre. Tickets to fly out on this day can be as low as $891. On the other hand, Wednesday is the most expensive day to depart from Washington, D.C. because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,357.

What is the cheapest time of day to depart on your flight to Porto Alegre?

Our most recent data shows that the best time of day to fly to Porto Alegre is in the afternoon. Flights from Washington, D.C. to Porto Alegre during this time can be as low as $1,173. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,350 on average. Flights to Porto Alegre from Washington, D.C. at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You could potentially save up to 5% 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

24h 00m

Direct flights

None
The fastest flight from Washington, D.C. to Porto Alegre takes 24h 00m
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 24h 00m.

  • 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
1,556 reviews
Search Copa Airlines flights
LATAM AirlinesPriceFrom $798Free CancellationRating
7.5
1,893 reviews
Search LATAM 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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