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Porto Alegre

$1,343+ Cheap flights from Seattle (SEA) to Porto Alegre (POA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — POA
dic. 20 — dic. 271
sáb. 12/20
sáb. 12/27
1 adult, Economy
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Find flight deals from Seattle to Porto Alegre

Cheapest flights from Seattle to Porto Alegre
Explore the most affordable flight options available from Seattle to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 20, 2025.

This Copa Airlines deal was found by Cheapflights users on 11/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/185:05 pmSEA - POA
2 stops26h 25mCopa Airlines
vie. 1/21:45 amPOA - SEA
2 stops27h 12mCopa Airlines
Deal found 11/20$2,660
This Delta deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/201:45 pmSEA - POA
2 stops35h 45mDelta
lun. 1/57:45 amPOA - SEA
2 stops33h 35mDelta
Deal found 11/19$2,799
This GOL deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure GOL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/1912:43 pmSEA - POA
2 stops41h 47mGOL
dom. 1/49:10 pmPOA - SEA
2 stops55h 32mGOL
Deal found 11/19$2,813
This Travelocity deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/197:25 amSEA - POA
2 stops28h 35mMultiple Airlines
dom. 1/49:10 pmPOA - SEA
2 stops44h 54mMultiple Airlines
Deal found 11/18$2,852
This FlightHub deal was found by Cheapflights users on 11/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/197:55 amSEA - POA
3 stops52h 05mLATAM Airlines
dom. 1/48:40 amPOA - SEA
2 stops33h 17mLATAM Airlines
Deal found 11/18$3,002
This FlightHub deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/207:10 amSEA - POA
2 stops42h 20mLATAM Airlines
sáb. 1/38:10 pmPOA - SEA
2 stops32h 48mLATAM Airlines
Deal found 11/19$3,033
This KAYAK deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/207:10 amSEA - POA
2 stops28h 50mLATAM Airlines
dom. 1/45:55 pmPOA - SEA
2 stops24h 02mLATAM Airlines
Deal found 11/19$3,348
This KAYAK deal was found by Cheapflights users on 11/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/199:00 amSEA - POA
2 stops27h 00mLATAM Airlines
lun. 1/56:40 amPOA - SEA
2 stops21h 10mLATAM Airlines
Deal found 11/19$3,418

Cheap flight deals from Seattle to Porto Alegre

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Porto Alegre (POA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated noviembre 20, 2025.

Most accurate provider

AranGrant
2 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$1,343
(Expedia)
Provider with most accurate pricing for Seattle/Tacoma Intl-Porto Alegre Salgado Filho flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Porto Alegre Salgado Filho flights.
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From Seattle/Tacoma Intl to Porto Alegre Salgado Filho
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle 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, Cheapflights users made 2,558,603 searches. Data last updated noviembre 20, 2025.
Use the filters below to find and compare flights from Seattle to Porto Alegre that are best for you.

Fly from

Seattle

Fly to

Porto Alegre

Route

Depart

Return

Price

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

dom. 1/4

10:55 pm-9:20 am

2 stops29h 25m

Porto Alegre Salgado Filho

dom. 1/11

5:50 pm-9:35 pm

3 stops56h 45m

$1,343

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

dom. 1/4

10:32 am-1:00 pm

2 stops21h 28m

Porto Alegre Salgado Filho

dom. 1/11

9:10 pm-11:01 am

2 stops42h 51m

$1,393

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

dom. 1/4

11:49 am-9:00 pm

2 stops28h 11m

Porto Alegre Salgado Filho

sáb. 1/10

4:40 am-10:09 am

2 stops58h 29m

$1,818

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

jue. 12/18

5:05 pm-12:30 am

2 stops26h 25m

Porto Alegre Salgado Filho

vie. 1/2

1:45 am-11:57 pm

2 stops27h 12m

$2,660

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

sáb. 12/20

5:05 pm-12:30 am

2 stops26h 25m

Porto Alegre Salgado Filho

vie. 1/2

1:45 am-11:57 pm

2 stops27h 12m

$2,660

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

vie. 12/19

9:06 am-12:30 am

2 stops34h 24m

Porto Alegre Salgado Filho

sáb. 1/3

1:45 am-11:08 pm

2 stops26h 23m

$2,660

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

sáb. 12/20

1:45 pm-6:30 am

2 stops35h 45m

Porto Alegre Salgado Filho

lun. 1/5

7:45 am-12:20 pm

2 stops33h 35m

$2,799

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

vie. 12/19

12:43 pm-11:30 am

2 stops41h 47m

Porto Alegre Salgado Filho

dom. 1/4

9:10 pm-11:42 pm

2 stops55h 32m

$2,813

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

vie. 12/19

7:55 am-5:00 pm

3 stops52h 05m

Porto Alegre Salgado Filho

dom. 1/4

9:10 pm-11:01 am

2 stops42h 51m

$2,877

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

sáb. 12/20

7:10 am-6:30 am

2 stops42h 20m

Porto Alegre Salgado Filho

sáb. 1/3

8:10 pm-11:58 pm

2 stops32h 48m

$3,033

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

  • Most accurate provider: When it comes to deals on Seattle-Porto Alegre flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Seattle-Porto Alegre flight deals on Cheapflights vs. AranGrant 90-95% of the time. Price accuracy is based on data collected from Seattle-Porto Alegre flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Porto Alegre flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Porto Alegre flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Porto Alegre

Have a flexible travel schedule? Discover the best time to fly to Porto Alegre from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Porto Alegre. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Porto Alegre?

    LATAM Airlines, GOL, and Copa Airlines can get you from Seattle to Porto Alegre in just under 21h 28m. Your travel time can differ by up to 7h 57m. Seattle and Porto Alegre are separated by a distance of 6926 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Seattle to Porto Alegre that include hotel bookings?

    Yes. In addition to deals on Seattle to Porto Alegre flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Porto Alegre?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Porto Alegre.

  • Can I find deals for business class flights from Seattle to Porto Alegre?

    Yes. Cheapflights offers flight deals from Seattle to Porto Alegre by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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