Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Washington, D.C. 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. 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. 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
2:25 am - 12:20 am
IAD
-
POA
20h 55m
1 stop
Copa Airlines Logo
1:20 am - 3:04 pm
POA
-
IAD
14h 44m
1 stop
$591Copa 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 - 3:04 pm
POA
-
IAD
14h 44m
1 stop
$651Copa Airlines
Tue, Sep 15 - Sun, Sep 27
LATAM Airlines Logo
12:29 pm - 5:00 pm
IAD
-
POA
27h 31m
2 stops
LATAM Airlines Logo
12:10 pm - 6:32 pm
POA
-
IAD
31h 22m
2 stops
$708LATAM Airlines
Mon, Jun 8 - Wed, Jun 17
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
LATAM Airlines Logo
12:29 pm - 2:15 pm
IAD
-
POA
24h 46m
2 stops
LATAM Airlines Logo
7:35 am - 12:44 am
POA
-
IAD
18h 09m
2 stops
$730LATAM Airlines
Mon, Jun 8 - Mon, Jun 15
LATAM Airlines Logo
1:00 pm - 5:00 pm
IAD
-
POA
27h 00m
2 stops
LATAM Airlines Logo
10:05 am - 11:51 am
POA
-
IAD
26h 46m
2 stops
$732LATAM Airlines
Tue, Sep 15 - Mon, Sep 28
LATAM Airlines Logo
6:08 am - 7:05 pm
IAD
-
POA
35h 57m
2 stops
LATAM Airlines Logo
9:55 pm - 11:39 am
POA
-
IAD
38h 44m
2 stops
$764LATAM Airlines
Sun, May 31 - Tue, Jun 9
LATAM Airlines Logo
7:39 pm - 12:15 am
IAD
-
POA
27h 36m
2 stops
LATAM Airlines Logo
1:50 pm - 6:32 pm
POA
-
IAD
29h 42m
2 stops
$784LATAM Airlines
Mon, Jun 22 - Wed, Jul 1

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
Sep 14
IAD2:25 amWashington, D.C. Dulles Intl
20h 55m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Sep 27
POA1:20 amPorto Alegre Salgado Filho
28h 00m
1 stop
IAD4:20 amWashington, D.C. Dulles Intl
$570
Copa Airlines
Sep 14
IAD2:25 amWashington, D.C. Dulles Intl
20h 55m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Sep 27
POA1:20 amPorto Alegre Salgado Filho
14h 44m
1 stop
IAD3:04 pmWashington, D.C. Dulles Intl
$591
Copa Airlines
Sep 15
IAD9:35 amWashington, D.C. Dulles Intl
13h 45m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Sep 27
POA1:20 amPorto Alegre Salgado Filho
14h 44m
1 stop
IAD3:04 pmWashington, D.C. Dulles Intl
$651

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
Jun 8
IAD12:29 pmWashington, D.C. Dulles Intl
27h 31m
2 stops
POA5:00 pmPorto Alegre Salgado Filho
Jun 17
POA12:10 pmPorto Alegre Salgado Filho
31h 22m
2 stops
IAD6:32 pmWashington, D.C. Dulles Intl
$708
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
Jun 8
IAD12:29 pmWashington, D.C. Dulles Intl
24h 46m
2 stops
POA2:15 pmPorto Alegre Salgado Filho
Jun 15
POA7:35 amPorto Alegre Salgado Filho
18h 09m
2 stops
IAD12:44 amWashington, D.C. Dulles Intl
$730

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 May 15, 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

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

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-3:04 pm

1 stop14h 44m

$591
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-3:04 pm

1 stop14h 44m

$651

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Mon 6/8

12:29 pm-5:00 pm

2 stops27h 31m

Porto Alegre Salgado Filho

Wed 6/17

12:10 pm-6:32 pm

2 stops31h 22m

$708

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

Mon 6/8

12:29 pm-2:15 pm

2 stops24h 46m

Porto Alegre Salgado Filho

Mon 6/15

7:35 am-12:44 am

2 stops18h 09m

$730

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Tue 9/15

1:00 pm-5:00 pm

2 stops27h 00m

Porto Alegre Salgado Filho

Mon 9/28

10:05 am-11:51 am

2 stops26h 46m

$732

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Sun 5/31

6:08 am-7:05 pm

2 stops35h 57m

Porto Alegre Salgado Filho

Tue 6/9

9:55 pm-11:39 am

2 stops38h 44m

$764

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Mon 6/22

7:39 pm-12:15 am

2 stops27h 36m

Porto Alegre Salgado Filho

Wed 7/1

1:50 pm-6:32 pm

2 stops29h 42m

$784

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. 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 month to fly to Porto Alegre?

The cheapest month to fly to Porto Alegre from Washington, D.C. is in December. Flight prices, which tend to average around $324, are often lower during this time because this is during the off-season. If you’re not able to fly to Porto Alegre in December, then October is your next best option. Flight prices from Washington, D.C. to Porto Alegre during October average around $428.

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

You could potentially save up to 33% 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

22h 45m

Direct flights

None
The fastest flight from Washington, D.C. to Porto Alegre takes 22h 45m
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

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

  • 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 22h 45m.

  • 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 $485Free CancellationRating
7.5
1,585 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.

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
Sun 6/14
Sun 6/21
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Brazil