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Cheap flights from Washington to Porto Alegre from $918

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 to Porto Alegre departing on 11/13. 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
1 adult, Economy, 0 bags

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

Find the cheapest flights from Washington to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
8:25 am - 12:15 pm
SEA
-
POA
22h 50m
2 stops
LATAM Airlines Logo
7:30 am - 12:09 am
POA
-
SEA
21h 39m
2 stops
$918LATAM Airlines
Fri, Nov 13 - Tue, Nov 17
LATAM Airlines Logo
8:25 am - 5:00 pm
SEA
-
POA
27h 35m
2 stops
LATAM Airlines Logo
6:40 am - 10:35 am
POA
-
SEA
32h 55m
2 stops
$1,024LATAM Airlines
Fri, Nov 13 - Tue, Nov 17
LATAM Airlines Logo
8:05 am - 12:40 am
SEA
-
POA
36h 35m
2 stops
LATAM Airlines Logo
9:55 pm - 10:02 pm
POA
-
SEA
52h 07m
2 stops
$1,062LATAM Airlines
Sun, Aug 9 - Sun, Aug 16
United Airlines Logo
8:10 am - 4:10 pm
SEA
-
POA
27h 00m
2 stops
United Airlines Logo
3:25 pm - 4:27 pm
POA
-
SEA
30h 02m
3 stops
$1,251United Airlines
Fri, Nov 13 - Tue, Nov 17
United Airlines Logo
10:52 am - 4:10 pm
SEA
-
POA
24h 18m
2 stops
United Airlines Logo
3:25 pm - 4:27 pm
POA
-
SEA
30h 02m
3 stops
$1,311United Airlines
Fri, Nov 13 - Tue, Nov 17
LATAM Airlines Logo
10:55 pm - 6:20 am
PDX
-
POA
51h 25m
2 stops
LATAM Airlines Logo
7:05 pm - 12:24 pm
POA
-
PDX
21h 19m
2 stops
$1,489LATAM Airlines
Fri, Jul 17 - Sun, Aug 2
Multiple Airlines Logo
9:30 am - 6:50 pm
SEA
-
POA
29h 20m
2 stops
Multiple Airlines Logo
6:30 pm - 8:38 am
POA
-
SEA
42h 08m
3 stops
$1,558Multiple Airlines
Sun, Aug 9 - Sun, Aug 16
Multiple Airlines Logo
5:50 am - 2:20 pm
SEA
-
POA
28h 30m
3 stops
Multiple Airlines Logo
6:30 pm - 8:38 am
POA
-
SEA
42h 08m
3 stops
$1,646Multiple Airlines
Sun, Aug 9 - Sun, Aug 16
GOL Logo
7:00 am - 3:35 pm
PDX
-
POA
28h 35m
3 stops
GOL Logo
2:05 pm - 10:54 am
POA
-
PDX
24h 49m
2 stops
$1,650GOL
Fri, Jul 17 - Tue, Aug 4
GOL Logo
11:54 am - 3:35 pm
PDX
-
POA
23h 41m
2 stops
GOL Logo
5:05 pm - 4:38 pm
POA
-
PDX
27h 33m
3 stops
$1,674GOL
Fri, Jul 17 - Sun, Aug 2

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LATAM Airlines flights from State of Washington to Porto Alegre

Our best LATAM Airlines deals on State of Washington to Porto Alegre flight tickets
LATAM Airlines
Nov 13
SEA8:25 amSeattle/Tacoma Intl
22h 50m
2 stops
POA12:15 pmPorto Alegre Salgado Filho
Nov 17
POA7:30 amPorto Alegre Salgado Filho
21h 39m
2 stops
SEA12:09 amSeattle/Tacoma Intl
$918
LATAM Airlines
Nov 13
SEA8:25 amSeattle/Tacoma Intl
27h 35m
2 stops
POA5:00 pmPorto Alegre Salgado Filho
Nov 17
POA6:40 amPorto Alegre Salgado Filho
32h 55m
2 stops
SEA10:35 amSeattle/Tacoma Intl
$1,024
LATAM Airlines
Aug 9
SEA8:05 amSeattle/Tacoma Intl
36h 35m
2 stops
POA12:40 amPorto Alegre Salgado Filho
Aug 16
POA9:55 pmPorto Alegre Salgado Filho
52h 07m
2 stops
SEA10:02 pmSeattle/Tacoma Intl
$1,062

GOL flights from State of Washington to Porto Alegre

Our best GOL deals on State of Washington to Porto Alegre flight tickets
GOL
Jul 17
PDX7:00 amPortland
28h 35m
3 stops
POA3:35 pmPorto Alegre Salgado Filho
Aug 4
POA2:05 pmPorto Alegre Salgado Filho
24h 49m
2 stops
PDX10:54 amPortland
$1,650
GOL
Jul 17
PDX11:54 amPortland
23h 41m
2 stops
POA3:35 pmPorto Alegre Salgado Filho
Aug 2
POA5:05 pmPorto Alegre Salgado Filho
27h 33m
3 stops
PDX4:38 pmPortland
$1,674

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington 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 June 26, 2026.
Use the filters below to find and compare flights from Washington to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Fri 11/13

8:25 am-12:15 pm

2 stops22h 50m

Porto Alegre Salgado Filho

Tue 11/17

7:30 am-12:09 am

2 stops21h 39m

$918

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Fri 11/13

8:25 am-5:00 pm

2 stops27h 35m

Porto Alegre Salgado Filho

Tue 11/17

6:40 am-10:35 am

2 stops32h 55m

$1,024

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Sun 8/9

8:05 am-12:40 am

2 stops36h 35m

Porto Alegre Salgado Filho

Sun 8/16

9:55 pm-10:02 pm

2 stops52h 07m

$1,062

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Fri 11/13

8:10 am-4:10 pm

2 stops27h 00m

Porto Alegre Salgado Filho

Tue 11/17

3:25 pm-4:27 pm

3 stops30h 02m

$1,251

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Fri 11/13

10:52 am-4:10 pm

2 stops24h 18m

Porto Alegre Salgado Filho

Tue 11/17

3:25 pm-4:27 pm

3 stops30h 02m

$1,311

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Fri 7/17

10:55 pm-6:20 am

2 stops51h 25m

Porto Alegre Salgado Filho

Sun 8/2

7:05 pm-12:24 pm

2 stops21h 19m

$1,489

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Sun 8/9

9:30 am-6:50 pm

2 stops29h 20m

Porto Alegre Salgado Filho

Sun 8/16

6:30 pm-8:38 am

3 stops42h 08m

$1,558

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Sun 8/9

5:50 am-2:20 pm

3 stops28h 30m

Porto Alegre Salgado Filho

Sun 8/16

6:30 pm-8:38 am

3 stops42h 08m

$1,646

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Fri 7/17

7:00 am-3:35 pm

3 stops28h 35m

Porto Alegre Salgado Filho

Tue 8/4

2:05 pm-10:54 am

2 stops24h 49m

$1,650

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Fri 7/17

11:54 am-3:35 pm

2 stops23h 41m

Porto Alegre Salgado Filho

Sun 8/2

5:05 pm-4:38 pm

3 stops27h 33m

$1,674

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap State of Washington to Porto Alegre flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Porto Alegre

Fastest flight time

20h 17m

Direct flights

None
The fastest flight from State of Washington to Porto Alegre takes 20h 17m
There are no direct flights from State of Washington to Porto Alegre. There are no popular flight routes from State of Washington to Porto Alegre.
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Frequently asked questions about flying from Washington to Porto Alegre

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

    Prices for flights from Washington to Porto Alegre Salgado Filho Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington 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 you'll need for your trip to Porto Alegre Salgado Filho Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Porto Alegre Salgado Filho Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Porto Alegre

Compare and see reviews for airlines that fly from State of Washington to Porto Alegre with momondo
Airline
Rating
Free Cancellation
Price
GOLPriceFrom $1,100Free CancellationRating
7.3
1,242 reviews
Search GOL flights

Frequently asked questions about flying from Washington to Porto Alegre

  • How do I get Price Alerts for flights from State of Washington to Porto Alegre?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to State of Washington from Porto Alegre. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from State of Washington to Porto Alegre with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Porto Alegre?

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

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

Yes. All flights to Porto Alegre from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington to Porto Alegre?

momondo provides multiple filters to help you find the best flight to Porto Alegre from Washington. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Washington to Porto Alegre flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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