Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Washington, D.C. Dulles Intl Airport to Porto Alegre from $340

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. Dulles Intl Airport to Porto Alegre departing on 6/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Travel Warning: Due to flooding, the airport may be currently closed. Check local travel advisories before booking.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
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
Mon, Sep 14 - 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 - Sun, Sep 27
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
$700Copa Airlines
Tue, Sep 15 - 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
$711Copa Airlines
Thu, Sep 10 - Thu, Sep 24
LATAM Airlines Logo
5:30 pm - 6:15 pm
IAD
-
POA
22h 45m
2 stops
LATAM Airlines Logo
11:05 am - 2:41 pm
POA
-
IAD
29h 36m
2 stops
$725LATAM Airlines
Mon, Nov 9 - Wed, Nov 11
Copa Airlines Logo
4:38 pm - 12:20 am
IAD
-
POA
30h 42m
1 stop
Copa Airlines Logo
1:20 am - 4:21 am
POA
-
IAD
28h 01m
1 stop
$730Copa Airlines
Tue, Jun 23 - Sat, Jun 27
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 - Mon, Sep 28
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
Thu, Sep 10 - 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
Fri, Sep 11 - Thu, Sep 24

GOL flights from Washington, D.C. Dulles Intl Airport to Porto Alegre

Our best GOL deals on Washington, D.C. Dulles Intl Airport to Porto Alegre flight tickets
GOL
Aug 15
IAD6:50 amWashington, D.C. Dulles Intl
28h 25m
2 stops
POA12:15 pmPorto Alegre Salgado Filho
Aug 22
POA6:00 amPorto Alegre Salgado Filho
24h 20m
3 stops
IAD5:20 amWashington, D.C. Dulles Intl
$1,026
GOL
Jun 23
IAD6:50 amWashington, D.C. Dulles Intl
28h 25m
2 stops
POA12:15 pmPorto Alegre Salgado Filho
Jun 28
POA6:00 amPorto Alegre Salgado Filho
24h 20m
3 stops
IAD5:20 amWashington, D.C. Dulles Intl
$1,312

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

Our best LATAM Airlines deals on Washington, D.C. Dulles Intl Airport to Porto Alegre flight tickets
LATAM Airlines
Nov 9
IAD5:30 pmWashington, D.C. Dulles Intl
22h 45m
2 stops
POA6:15 pmPorto Alegre Salgado Filho
Nov 11
POA11:05 amPorto Alegre Salgado Filho
29h 36m
2 stops
IAD2:41 pmWashington, D.C. Dulles Intl
$725
LATAM Airlines
Sep 15
IAD4:00 pmWashington, D.C. Dulles Intl
24h 00m
2 stops
POA5:00 pmPorto Alegre Salgado Filho
Sep 28
POA6:40 amPorto Alegre Salgado Filho
30h 11m
2 stops
IAD11:51 amWashington, D.C. Dulles Intl
$731
LATAM Airlines
Sep 15
IAD4:00 pmWashington, D.C. Dulles Intl
24h 00m
2 stops
POA5:00 pmPorto Alegre Salgado Filho
Sep 28
POA6:40 amPorto Alegre Salgado Filho
30h 11m
2 stops
IAD11:51 amWashington, D.C. Dulles Intl
$732

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport 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 May 19, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Mon 9/14

2:25 am-12:20 am

1 stop20h 55m

Porto Alegre Salgado Filho

Sun 9/27

1:20 am-4:20 am

1 stop28h 00m

$570
Quickest round-trip

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Tue 9/15

9:35 am-12:20 am

1 stop13h 45m

Porto Alegre Salgado Filho

Sun 9/27

1:20 am-4:20 am

1 stop28h 00m

$650

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Tue 9/15

4:34 pm-12:20 am

1 stop30h 46m

Porto Alegre Salgado Filho

Sun 9/27

1:20 am-12:32 am

1 stop24h 12m

$700

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Thu 9/10

2:25 am-12:20 am

1 stop20h 55m

Porto Alegre Salgado Filho

Thu 9/24

1:20 am-4:20 am

1 stop28h 00m

$711

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Mon 11/9

5:30 pm-6:15 pm

2 stops22h 45m

Porto Alegre Salgado Filho

Wed 11/11

11:05 am-2:41 pm

2 stops29h 36m

$725

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Tue 6/23

4:38 pm-12:20 am

1 stop30h 42m

Porto Alegre Salgado Filho

Sat 6/27

1:20 am-4:21 am

1 stop28h 01m

$730

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Tue 9/15

4:00 pm-5:00 pm

2 stops24h 00m

Porto Alegre Salgado Filho

Mon 9/28

6:40 am-11:51 am

2 stops30h 11m

$731

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Tue 9/15

4:00 pm-5:00 pm

2 stops24h 00m

Porto Alegre Salgado Filho

Mon 9/28

6:40 am-11:51 am

2 stops30h 11m

$732

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Thu 9/10

2:25 am-12:20 am

1 stop20h 55m

Porto Alegre Salgado Filho

Thu 9/24

1:20 am-12:32 am

1 stop24h 12m

$760

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Fri 9/11

4:34 pm-12:20 am

1 stop30h 46m

Porto Alegre Salgado Filho

Thu 9/24

1:20 am-12:32 am

1 stop24h 12m

$780

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Porto Alegre from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport is in May. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you’re not able to fly to Porto Alegre in May, then February is your next best option. Flight prices from Washington, D.C. Dulles Intl Airport to Porto Alegre during February average around $0.

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

You could potentially save up to 21% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Porto Alegre flight.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport to Porto Alegre (IAD to POA) flight deals and tips

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

Fastest flight time

23h 50m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Porto Alegre takes 23h 50m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Porto Alegre. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Porto Alegre.
Search flight deals

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Porto Alegre

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

    Porto Alegre Salgado Filho is 5052.8 mi away from Washington, D.C. Dulles Intl. A reasonable flight in good conditions will take 23h 50m.

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

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

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

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

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

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Porto Alegre with momondo
Airline
Rating
Free Cancellation
Price
Copa AirlinesPriceFrom $485Free CancellationRating
7.5
1,577 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?

Finding the right flight to Porto Alegre from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Porto Alegre quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to Porto Alegre from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Washington, D.C. and Porto Alegre by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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.

An easier way to manage your Porto Alegre trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 6/18
Thu 6/25
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Brazil