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Porto Alegre

$313+ Cheap flights from Washington to Porto Alegre (POA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — POA
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Washington to Porto Alegre

Keep the following information in mind while searching for Washington to Porto Alegre flight deals. Data was last updated September 16, 2025.

Round-trip from

$865
(SmartFares)

One-way from

$313
(Kiwi.com)
From Washington to Porto Alegre Salgado Filho
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One-way flight from Washington to Porto Alegre Salgado Filho
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Find flight deals from Washington to Porto Alegre

Cheapest flights from Washington to Porto Alegre
Explore the most affordable flight options available from Washington to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This SmartFares deal was found by Cheapflights users on 9/15. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/308:00 amSEA - POA
2 stops29h 00mMultiple Airlines
Thu 11/67:45 amPOA - SEA
2 stops34h 17mMultiple Airlines
Deal found 9/15$865
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/307:10 amSEA - POA
2 stops27h 10mUnited Airlines
Thu 11/63:25 pmPOA - SEA
3 stops31h 45mUnited Airlines
Deal found 9/15$995
This LATAM Airlines deal was found by Cheapflights users on 9/13. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/3011:42 amPDX - POA
2 stops28h 08mLATAM Airlines
Fri 10/310:10 amPOA - PDX
2 stops29h 54mLATAM Airlines
Deal found 9/13$1,111
This Mytrip deal was found by Cheapflights users on 9/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:05 amSEA - POA
3 stops26h 25mAir Canada
Thu 11/63:25 pmPOA - SEA
3 stops28h 06mAir Canada
Deal found 9/15$1,119
This Ovago deal was found by Cheapflights users on 9/16. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1812:43 pmSEA - POA
2 stops24h 02mGOL
Sat 1/35:20 pmPOA - SEA
2 stops23h 10mGOL
Deal found 9/16$2,056
This Ovago deal was found by Cheapflights users on 9/15. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2010:06 pmSEA - POA
2 stops20h 39mGOL
Sun 1/411:15 amPOA - SEA
2 stops30h 45mGOL
Deal found 9/15$2,106
This GOL deal was found by Cheapflights users on 9/15. 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.
Sat 11/812:04 pmPDX - POA
2 stops25h 36mGOL
Sun 1/41:40 pmPOA - PDX
2 stops26h 20mGOL
Deal found 9/15$2,464
This Copa Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 12/189:06 amSEA - POA
2 stops34h 24mCopa Airlines
Fri 1/21:45 amPOA - SEA
2 stops27h 12mCopa Airlines
Deal found 9/15$2,659
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/810:45 pmPDX - POA
2 stops30h 10mAmerican Airlines
Sun 1/45:55 pmPOA - PDX
3 stops23h 55mAmerican Airlines
Deal found 9/14$2,765
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/208:10 amSEA - POA
2 stops28h 30mAir Canada
Sun 1/45:55 pmPOA - SEA
3 stops25h 36mAir Canada
Deal found 9/15$3,164
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/87:00 amPDX - POA
3 stops27h 25mUnited Airlines
Sun 1/43:10 pmPOA - PDX
3 stops32h 38mUnited Airlines
Deal found 9/15$3,478

Cheapflights Fare Finder

 
Customize your flight search to find flights from 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, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Washington to Porto Alegre that are best for you.

Fly from

Washington

Fly to

Porto Alegre

Route

Depart

Return

Price

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Thu 10/30

4:30 pm-6:30 am

2 stops34h 00m

Porto Alegre Salgado Filho

Wed 11/5

4:45 am-10:27 am

2 stops34h 42m

$885

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Thu 10/30

7:10 am-2:20 pm

2 stops27h 10m

Porto Alegre Salgado Filho

Thu 11/6

3:25 pm-6:10 pm

3 stops31h 45m

$995

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Tue 9/30

11:42 am-7:50 pm

2 stops28h 08m

Porto Alegre Salgado Filho

Fri 10/3

10:10 am-12:04 pm

2 stops29h 54m

$1,111

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Thu 10/30

10:05 am-4:30 pm

3 stops26h 25m

Porto Alegre Salgado Filho

Thu 11/6

3:25 pm-2:31 pm

3 stops28h 06m

$1,119

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Sat 12/20

10:06 pm-11:45 pm

2 stops20h 39m

Porto Alegre Salgado Filho

Sun 1/4

11:15 am-1:00 pm

2 stops30h 45m

$2,106

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Sat 11/8

12:04 pm-6:40 pm

2 stops25h 36m

Porto Alegre Salgado Filho

Sun 1/4

5:55 pm-11:00 am

2 stops22h 05m

$2,464

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Thu 12/18

5:05 pm-12:30 am

2 stops26h 25m

Porto Alegre Salgado Filho

Fri 1/2

1:45 am-11:57 pm

2 stops27h 12m

$2,659

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Sat 11/8

10:45 pm-9:55 am

2 stops30h 10m

Porto Alegre Salgado Filho

Sun 1/4

5:55 pm-12:50 pm

3 stops23h 55m

$2,765

SeattlePorto Alegre

SEA - POA

SEAPOA

Seattle/Tacoma Intl

Sat 12/20

8:10 am-5:40 pm

2 stops28h 30m

Porto Alegre Salgado Filho

Sun 1/4

5:55 pm-2:31 pm

3 stops25h 36m

$3,164

PortlandPorto Alegre

PDX - POA

PDXPOA

Portland

Sat 11/8

7:00 am-3:25 pm

3 stops27h 25m

Porto Alegre Salgado Filho

Sun 1/4

3:10 pm-6:48 pm

3 stops32h 38m

$3,478

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 12 results
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Best time to book a flight from Washington to Porto Alegre

Have a flexible travel schedule? Discover the best time to fly to Porto Alegre from Washington 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.

Cheapflights Insights

Everything you need to know about your flight from Washington to Porto Alegre
No data available for this route at this time. Please check back soon.

Related info for your journey

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

  • What airport do you fly into for flights to Porto Alegre from Washington?

    Porto Alegre Salgado Filho (POA) is the airport you will fly into if you book a flight from Washington to Porto Alegre. It is only a 4.0 mi journey from Salgado Filho (POA) to Porto Alegre’s city center.

  • How long is the flight from State of Washington to Porto Alegre?

    Airlines like United Airlines, LATAM Airlines, and Air Canada fly from State of Washington to Porto Alegre in about 26h 25m. The time it takes to get you to your destination can typically vary by up to 1h 43m. Airlines will cover a distance of 6926 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington 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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Alternative routes for Washington to Porto Alegre

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Washington to Porto Alegre

Discover the top airline that operate flights from Washington to Porto Alegre. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$798Average$802FlexibilityNo cancel feeOn-time71%

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