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Cheap flights from Washington to Porto Alegre from $883

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 to Porto Alegre departing on 12/20. 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.
Multiple Airlines Logo
8:13 am - 5:00 pmSEA  Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho
28h 47m2 stops Miami Sao Paulo Guarulhos Intl
Multiple Airlines Logo
7:05 pm - 10:05 pmPOA  Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl
31h 00m2 stops Santiago Arturo Merino Benitez Miami
$938Multiple Airlines
Mon, Aug 24 - Sun, Aug 30
Multiple Airlines Logo
8:13 am - 5:00 pmSEA  Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho
28h 47m2 stops Miami Sao Paulo Guarulhos Intl
Multiple Airlines Logo
10:00 pm - 9:55 pmPOA  Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl
51h 55m2 stops Sao Paulo Guarulhos Intl Miami
$959Multiple Airlines
Fri, Aug 28 - Mon, Sep 7
LATAM Airlines Logo
8:10 am - 4:50 pmSEA  Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho
27h 40m2 stops Miami Santiago Arturo Merino Benitez
LATAM Airlines Logo
6:00 pm - 2:20 pmPOA  Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl
25h 20m2 stops Sao Paulo Guarulhos Intl Boston Logan Intl
$997LATAM Airlines
Tue, Nov 17 - Thu, Dec 3
Multiple Airlines Logo
8:13 am - 2:40 pmSEA  Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho
26h 27m2 stops Miami Sao Paulo Guarulhos Intl
Multiple Airlines Logo
8:05 pm - 9:54 pmPOA  Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl
29h 49m2 stops Sao Paulo Guarulhos Intl Miami
$1,007Multiple Airlines
Fri, Aug 28 - Wed, Sep 9
LATAM Airlines Logo
8:05 am - 12:40 amSEA  Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho
36h 35m2 stops Miami Sao Paulo Guarulhos Intl
LATAM Airlines Logo
7:05 pm - 9:55 pmPOA  Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl
54h 50m3 stops Santiago Arturo Merino Benitez Buenos Aires Ministro Pistarini Miami
$1,051LATAM Airlines
Fri, Aug 28 - Mon, Sep 7
LATAM Airlines Logo
7:15 am - 11:05 pmSEA  Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho
35h 50m2 stops New York John F Kennedy Intl Sao Paulo Guarulhos Intl
LATAM Airlines Logo
7:05 pm - 10:05 pmPOA  Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl
55h 00m3 stops Santiago Arturo Merino Benitez Buenos Aires Ministro Pistarini Miami
$1,051LATAM Airlines
Mon, Aug 24 - Sun, Aug 30
Air Canada Logo
8:40 am - 3:00 pmSEA  Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho
25h 20m3 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl Sao Paulo Guarulhos Intl
Air Canada Logo
3:25 pm - 8:59 pmPOA  Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl
34h 34m2 stops Sao Paulo Guarulhos Intl Toronto Pearson Intl
$1,109Air Canada
Tue, Nov 17 - Thu, Dec 3
LATAM Airlines Logo
7:15 am - 5:00 pmSEA  Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho
29h 45m2 stops Los Angeles Sao Paulo Guarulhos Intl
LATAM Airlines Logo
11:00 am - 12:22 pmPOA  Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl
29h 22m2 stops Rio de Janeiro–Galeão Intl Atlanta Hartsfield-Jackson
$1,149LATAM Airlines
Thu, Oct 1 - Mon, Oct 5
GOL Logo
11:36 am - 7:00 pmSEA  Seattle/Tacoma Intl-POA Porto Alegre Salgado Filho
27h 24m2 stops Dallas/Fort Worth Sao Paulo Guarulhos Intl
GOL Logo
2:05 pm - 1:16 pmPOA  Porto Alegre Salgado Filho-SEA Seattle/Tacoma Intl
27h 11m2 stops Sao Paulo Guarulhos Intl Dallas/Fort Worth
$1,196GOL
Sat, Aug 22 - Fri, Sep 4
GOL Logo
11:34 pm - 10:50 amPDX  Portland-POA Porto Alegre Salgado Filho
31h 16m3 stops Chicago O'Hare Intl Miami Sao Paulo Guarulhos Intl
GOL Logo
6:40 pm - 10:59 amPOA  Porto Alegre Salgado Filho-PDX Portland
20h 19m2 stops Sao Paulo Guarulhos Intl Dallas/Fort Worth
$1,725GOL
Sun, Sep 6 - Sun, Sep 13

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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 17
SEA8:10 amSeattle/Tacoma Intl
27h 40m
2 stops
POA4:50 pmPorto Alegre Salgado Filho
Dec 3
POA6:00 pmPorto Alegre Salgado Filho
25h 20m
2 stops
SEA2:20 pmSeattle/Tacoma Intl
$997
LATAM Airlines
Aug 24
SEA7:15 amSeattle/Tacoma Intl
35h 50m
2 stops
POA11:05 pmPorto Alegre Salgado Filho
Aug 30
POA7:05 pmPorto Alegre Salgado Filho
55h 00m
3 stops
SEA10:05 pmSeattle/Tacoma Intl
$1,051
LATAM Airlines
Oct 1
SEA7:15 amSeattle/Tacoma Intl
29h 45m
2 stops
POA5:00 pmPorto Alegre Salgado Filho
Oct 5
POA11:00 amPorto Alegre Salgado Filho
29h 22m
2 stops
SEA12:22 pmSeattle/Tacoma Intl
$1,149

Air Canada flights from State of Washington to Porto Alegre

Our best Air Canada deals on State of Washington to Porto Alegre flight tickets
Air Canada
Nov 17
SEA8:40 amSeattle/Tacoma Intl
25h 20m
3 stops
POA3:00 pmPorto Alegre Salgado Filho
Dec 3
POA3:25 pmPorto Alegre Salgado Filho
34h 34m
2 stops
SEA8:59 pmSeattle/Tacoma Intl
$1,109
Air Canada
Sep 4
PDX11:02 pmPortland
36h 33m
3 stops
POA3:35 pmPorto Alegre Salgado Filho
Sep 13
POA2:05 pmPorto Alegre Salgado Filho
28h 31m
3 stops
PDX2:36 pmPortland
$3,073

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 August 10, 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

SeattlePorto Alegre

SEA Seattle/Tacoma Intl - POA Porto Alegre Salgado Filho

SEAPOA

Seattle/Tacoma Intl

Mon 8/24

8:13 am-5:00 pm

2 stops28h 47m

Porto Alegre Salgado Filho

Sun 8/30

7:05 pm-10:05 pm

2 stops31h 00m

$938

SeattlePorto Alegre

SEA Seattle/Tacoma Intl - POA Porto Alegre Salgado Filho

SEAPOA

Seattle/Tacoma Intl

Fri 8/28

8:13 am-5:00 pm

2 stops28h 47m

Porto Alegre Salgado Filho

Mon 9/7

10:00 pm-9:55 pm

2 stops51h 55m

$959

SeattlePorto Alegre

SEA Seattle/Tacoma Intl - POA Porto Alegre Salgado Filho

SEAPOA

Seattle/Tacoma Intl

Tue 11/17

8:10 am-4:50 pm

2 stops27h 40m

Porto Alegre Salgado Filho

Thu 12/3

6:00 pm-2:20 pm

2 stops25h 20m

$997

SeattlePorto Alegre

SEA Seattle/Tacoma Intl - POA Porto Alegre Salgado Filho

SEAPOA

Seattle/Tacoma Intl

Fri 8/28

8:13 am-2:40 pm

2 stops26h 27m

Porto Alegre Salgado Filho

Wed 9/9

8:05 pm-9:54 pm

2 stops29h 49m

$1,007

SeattlePorto Alegre

SEA Seattle/Tacoma Intl - POA Porto Alegre Salgado Filho

SEAPOA

Seattle/Tacoma Intl

Fri 8/28

8:05 am-12:40 am

2 stops36h 35m

Porto Alegre Salgado Filho

Mon 9/7

7:05 pm-9:55 pm

3 stops54h 50m

$1,051

SeattlePorto Alegre

SEA Seattle/Tacoma Intl - POA Porto Alegre Salgado Filho

SEAPOA

Seattle/Tacoma Intl

Mon 8/24

7:15 am-11:05 pm

2 stops35h 50m

Porto Alegre Salgado Filho

Sun 8/30

7:05 pm-10:05 pm

3 stops55h 00m

$1,051

SeattlePorto Alegre

SEA Seattle/Tacoma Intl - POA Porto Alegre Salgado Filho

SEAPOA

Seattle/Tacoma Intl

Tue 11/17

8:40 am-3:00 pm

3 stops25h 20m

Porto Alegre Salgado Filho

Thu 12/3

3:25 pm-8:59 pm

2 stops34h 34m

$1,109

SeattlePorto Alegre

SEA Seattle/Tacoma Intl - POA Porto Alegre Salgado Filho

SEAPOA

Seattle/Tacoma Intl

Thu 10/1

7:15 am-5:00 pm

2 stops29h 45m

Porto Alegre Salgado Filho

Mon 10/5

11:00 am-12:22 pm

2 stops29h 22m

$1,149

SeattlePorto Alegre

SEA Seattle/Tacoma Intl - POA Porto Alegre Salgado Filho

SEAPOA

Seattle/Tacoma Intl

Sat 8/22

11:36 am-7:00 pm

2 stops27h 24m

Porto Alegre Salgado Filho

Fri 9/4

2:05 pm-1:16 pm

2 stops27h 11m

$1,196
Quickest round-trip

PortlandPorto Alegre

PDX Portland - POA Porto Alegre Salgado Filho

PDXPOA

Portland

Sun 9/6

11:34 pm-10:50 am

3 stops31h 16m

Porto Alegre Salgado Filho

Sun 9/13

6:40 pm-10:59 am

2 stops20h 19m

$1,725

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Porto Alegre from

How to get the cheapest flight ticket from State of Washington 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 airline that flies from Washington to Porto Alegre Salgado Filho?

GOL and Air Canada are the most popular carriers operating from Washington to Porto Alegre Salgado Filho

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 24m

Direct flights

None
The fastest flight from State of Washington to Porto Alegre takes 20h 24m
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
1,272 reviews
Search GOL flights

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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