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Cheap flights from Washington, D.C. Dulles Intl Airport to Porto Alegre from $487

This is the cheapest round-trip 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 10/29. 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. Dulles Intl Airport to Porto Alegre

Cheap round-trip flights

Copa Airlines Logo
9:34 am - 12:20 amIAD-POA
13h 46m1 stop
Copa Airlines Logo
1:35 am - 11:33 pmPOA-IAD
23h 58m1 stop
$487Copa Airlines
Find Deal
Wed, Oct 29 - Tue, Nov 4
Copa Airlines Logo
9:34 am - 12:20 amIAD-POA
13h 46m1 stop
Copa Airlines Logo
1:30 am - 3:05 pmPOA-IAD
14h 35m1 stop
$560Copa Airlines
Find Deal
Thu, Oct 9 - Wed, Oct 29
United Airlines Logo
10:35 pm - 4:10 pmIAD-POA
16h 35m1 stop
United Airlines Logo
5:10 pm - 6:35 amPOA-IAD
15h 25m1 stop
$581United Airlines
Find Deal
Mon, Oct 13 - Mon, Nov 3
Copa Airlines Logo
2:25 am - 12:20 amIAD-POA
20h 55m1 stop
Copa Airlines Logo
1:35 am - 2:02 pmPOA-IAD
14h 27m1 stop
$584Copa Airlines
Find Deal
Sun, Oct 26 - Sun, Nov 9
United Airlines Logo
10:35 pm - 10:45 amIAD-POA
35h 10m1 stop
United Airlines Logo
5:10 pm - 5:30 pmPOA-IAD
26h 20m2 stops
$591United Airlines
Find Deal
Mon, Oct 13 - Mon, Nov 3
Copa Airlines Logo
2:25 am - 12:20 amIAD-POA
20h 55m1 stop
Copa Airlines Logo
1:35 am - 11:33 pmPOA-IAD
23h 58m1 stop
$597Copa Airlines
Find Deal
Tue, Oct 28 - Tue, Nov 4
Multiple Airlines Logo
9:34 am - 12:20 amIAD-POA
13h 46m1 stop
Multiple Airlines Logo
6:40 am - 11:33 pmPOA-IAD
18h 53m2 stops
$653Multiple Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 5
Multiple Airlines Logo
3:35 pm - 6:20 pmIAD-POA
25h 45m2 stops
Multiple Airlines Logo
9:05 pm - 3:10 amPOA-IAD
32h 05m3 stops
$662Multiple Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 5
Air Canada Logo
9:45 am - 4:30 pmIAD-POA
29h 45m2 stops
Air Canada Logo
3:25 pm - 3:51 pmPOA-IAD
26h 26m2 stops
$759Air Canada
Find Deal
Thu, Oct 30 - Thu, Nov 6
LATAM Airlines Logo
1:00 pm - 1:15 pmIAD-POA
22h 15m2 stops
LATAM Airlines Logo
6:40 am - 2:51 pmPOA-IAD
34h 11m2 stops
$788LATAM Airlines
Find Deal
Wed, Feb 11 - Wed, Feb 18

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

Our best Copa Airlines deals on Washington, D.C. Dulles Intl Airport to Porto Alegre flight tickets
Copa Airlines
Sep 17
IAD2:25 amWashington, D.C. Dulles Intl
20h 55m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Sep 26
POA1:25 amPorto Alegre Salgado Filho
24h 05m
1 stop
IAD12:30 amWashington, D.C. Dulles Intl
$466
Find similar
Copa Airlines
Sep 19
IAD9:35 amWashington, D.C. Dulles Intl
13h 45m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Sep 26
POA1:25 amPorto Alegre Salgado Filho
24h 05m
1 stop
IAD12:30 amWashington, D.C. Dulles Intl
$486
Find similar
Copa Airlines
Oct 29
IAD9:34 amWashington, D.C. Dulles Intl
13h 46m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Nov 4
POA1:35 amPorto Alegre Salgado Filho
23h 58m
1 stop
IAD11:33 pmWashington, D.C. Dulles Intl
$487
Find similar

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

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Porto Alegre flight tickets
United Airlines
Oct 13
IAD10:35 pmWashington, D.C. Dulles Intl
16h 35m
1 stop
POA4:10 pmPorto Alegre Salgado Filho
Nov 3
POA5:10 pmPorto Alegre Salgado Filho
15h 25m
1 stop
IAD6:35 amWashington, D.C. Dulles Intl
$581
Find similar
United Airlines
Oct 13
IAD10:35 pmWashington, D.C. Dulles Intl
35h 10m
1 stop
POA10:45 amPorto Alegre Salgado Filho
Nov 3
POA5:10 pmPorto Alegre Salgado Filho
26h 20m
2 stops
IAD5:30 pmWashington, D.C. Dulles Intl
$591
Find similar
United Airlines
Mar 10
IAD1:05 pmWashington, D.C. Dulles Intl
24h 30m
2 stops
POA2:35 pmPorto Alegre Salgado Filho
Mar 17
POA5:10 pmPorto Alegre Salgado Filho
19h 33m
2 stops
IAD11:43 amWashington, D.C. Dulles Intl
$617
Find similar

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 September 16, 2025.
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

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Wed 10/29

9:34 am-12:20 am

1 stop13h 46m

Porto Alegre Salgado Filho

Tue 11/4

1:35 am-11:33 pm

1 stop23h 58m

$487

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Thu 10/9

9:34 am-12:20 am

1 stop13h 46m

Porto Alegre Salgado Filho

Wed 10/29

1:30 am-3:05 pm

1 stop14h 35m

$560

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Mon 10/13

10:35 pm-4:10 pm

1 stop16h 35m

Porto Alegre Salgado Filho

Mon 11/3

5:10 pm-6:35 am

1 stop15h 25m

$581

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Sun 10/26

2:25 am-12:20 am

1 stop20h 55m

Porto Alegre Salgado Filho

Sun 11/9

1:35 am-2:02 pm

1 stop14h 27m

$584

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Mon 10/13

10:35 pm-10:45 am

1 stop35h 10m

Porto Alegre Salgado Filho

Mon 11/3

5:10 pm-5:30 pm

2 stops26h 20m

$591

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Tue 10/28

2:25 am-12:20 am

1 stop20h 55m

Porto Alegre Salgado Filho

Tue 11/4

1:35 am-11:33 pm

1 stop23h 58m

$597

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Wed 10/29

9:34 am-12:20 am

1 stop13h 46m

Porto Alegre Salgado Filho

Wed 11/5

6:40 am-11:33 pm

2 stops18h 53m

$653

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Wed 10/29

3:35 pm-6:20 pm

2 stops25h 45m

Porto Alegre Salgado Filho

Wed 11/5

9:05 pm-3:10 am

3 stops32h 05m

$662

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Thu 10/30

9:45 am-4:30 pm

2 stops29h 45m

Porto Alegre Salgado Filho

Thu 11/6

3:25 pm-3:51 pm

2 stops26h 26m

$759

Washington, D.C.Porto Alegre

IAD - POA

IADPOA

Washington, D.C. Dulles Intl

Wed 2/11

1:00 pm-1:15 pm

2 stops22h 15m

Porto Alegre Salgado Filho

Wed 2/18

6:40 am-2:51 pm

2 stops34h 11m

$788

Flights are sorted by cheapest round-trip flights first.

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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 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. Dulles Intl Airport 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. Dulles Intl Airport 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. Dulles Intl Airport at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Direct flights

None
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.
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  • 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 13h 35m.

  • 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 $428Free CancellationRating
7.6
1,531 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.

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