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Cheap flights from Austin to Porto Alegre from $665

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Austin to Porto Alegre departing on 3/25. 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 Austin to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
12:20 pm - 6:45 pmAUS-POA
28h 25m2 stops
LATAM Airlines Logo
5:55 pm - 6:52 pmPOA-AUS
26h 57m2 stops
$665LATAM Airlines
Find Deal
Wed, Mar 25 - Fri, Mar 27
LATAM Airlines Logo
10:52 am - 6:30 amAUS-POA
17h 38m2 stops
LATAM Airlines Logo
5:55 pm - 6:52 pmPOA-AUS
26h 57m2 stops
$758LATAM Airlines
Find Deal
Wed, Mar 25 - Fri, Mar 27
LATAM Airlines Logo
9:00 am - 5:00 pmAUS-POA
53h 00m3 stops
LATAM Airlines Logo
5:55 pm - 7:52 pmPOA-AUS
52h 57m2 stops
$958LATAM Airlines
Find Deal
Sat, Dec 27 - Sat, Jan 17
GOL Logo
4:24 pm - 12:50 amAUS-POA
29h 26m2 stops
GOL Logo
11:15 am - 9:39 pmPOA-AUS
37h 24m2 stops
$1,015GOL
Find Deal
Sat, Dec 27 - Sat, Jan 17
LATAM Airlines Logo
3:29 pm - 5:00 pmAUS-POA
46h 31m2 stops
LATAM Airlines Logo
8:10 pm - 7:52 pmPOA-AUS
50h 42m2 stops
$1,069LATAM Airlines
Find Deal
Sat, Dec 27 - Sat, Jan 17
Multiple Airlines Logo
5:30 am - 2:05 pmAUS-POA
29h 35m3 stops
Multiple Airlines Logo
6:05 pm - 12:58 amPOA-AUS
33h 53m3 stops
$1,501Multiple Airlines
Find Deal
Wed, Dec 17 - Wed, Dec 24
Multiple Airlines Logo
9:00 am - 5:00 pmAUS-POA
53h 00m3 stops
Multiple Airlines Logo
4:30 am - 10:58 amPOA-AUS
33h 28m2 stops
$1,606Multiple Airlines
Find Deal
Wed, Dec 17 - Tue, Dec 23
Copa Airlines Logo
3:42 pm - 12:25 amAUS-POA
30h 43m1 stop
Copa Airlines Logo
5:35 pm - 2:06 pmPOA-AUS
22h 31m2 stops
$1,857Copa Airlines
Find Deal
Wed, Mar 25 - Fri, Mar 27
Copa Airlines Logo
3:42 pm - 12:25 amAUS-POA
30h 43m1 stop
Copa Airlines Logo
5:55 pm - 2:06 pmPOA-AUS
22h 11m2 stops
$1,905Copa Airlines
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Wed, Mar 25 - Fri, Mar 27
Azul Logo
3:39 pm - 5:25 amAUS-POA
34h 46m2 stops
Azul Logo
12:50 am - 10:16 pmPOA-AUS
48h 26m2 stops
$3,387Azul
Find Deal
Sat, Dec 27 - Fri, Jan 16

LATAM Airlines flights from Austin to Porto Alegre

Our best LATAM Airlines deals on Austin to Porto Alegre flight tickets
LATAM Airlines
Mar 25
AUS12:20 pmAustin Bergstrom
28h 25m
2 stops
POA6:45 pmPorto Alegre Salgado Filho
Mar 27
POA5:55 pmPorto Alegre Salgado Filho
26h 57m
2 stops
AUS6:52 pmAustin Bergstrom
$665
Find similar
LATAM Airlines
Mar 25
AUS10:52 amAustin Bergstrom
17h 38m
2 stops
POA6:30 amPorto Alegre Salgado Filho
Mar 27
POA5:55 pmPorto Alegre Salgado Filho
26h 57m
2 stops
AUS6:52 pmAustin Bergstrom
$758
Find similar
LATAM Airlines
Dec 27
AUS9:00 amAustin Bergstrom
53h 00m
3 stops
POA5:00 pmPorto Alegre Salgado Filho
Jan 17
POA5:55 pmPorto Alegre Salgado Filho
52h 57m
2 stops
AUS7:52 pmAustin Bergstrom
$958
Find similar

Copa Airlines flights from Austin to Porto Alegre

Our best Copa Airlines deals on Austin to Porto Alegre flight tickets
Copa Airlines
Mar 25
AUS3:42 pmAustin Bergstrom
30h 43m
1 stop
POA12:25 amPorto Alegre Salgado Filho
Mar 27
POA5:35 pmPorto Alegre Salgado Filho
22h 31m
2 stops
AUS2:06 pmAustin Bergstrom
$1,857
Find similar
Copa Airlines
Mar 25
AUS3:42 pmAustin Bergstrom
30h 43m
1 stop
POA12:25 amPorto Alegre Salgado Filho
Mar 27
POA5:55 pmPorto Alegre Salgado Filho
22h 11m
2 stops
AUS2:06 pmAustin Bergstrom
$1,905
Find similar
Copa Airlines
Mar 25
AUS3:42 pmAustin Bergstrom
30h 43m
1 stop
POA12:25 amPorto Alegre Salgado Filho
Mar 27
POA5:35 pmPorto Alegre Salgado Filho
22h 31m
2 stops
AUS2:06 pmAustin Bergstrom
$2,129
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Austin 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 November 2, 2025.
Use the filters below to find and compare flights from Austin to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

AustinPorto Alegre

AUS - POA

AUSPOA

Austin Bergstrom

Wed 3/25

12:20 pm-6:45 pm

2 stops28h 25m

Porto Alegre Salgado Filho

Fri 3/27

5:55 pm-6:52 pm

2 stops26h 57m

$665

AustinPorto Alegre

AUS - POA

AUSPOA

Austin Bergstrom

Wed 3/25

10:52 am-6:30 am

2 stops17h 38m

Porto Alegre Salgado Filho

Fri 3/27

5:55 pm-6:52 pm

2 stops26h 57m

$758

AustinPorto Alegre

AUS - POA

AUSPOA

Austin Bergstrom

Sat 12/27

9:00 am-5:00 pm

3 stops53h 00m

Porto Alegre Salgado Filho

Sat 1/17

5:55 pm-7:52 pm

2 stops52h 57m

$958

AustinPorto Alegre

AUS - POA

AUSPOA

Austin Bergstrom

Sat 12/27

4:24 pm-12:50 am

2 stops29h 26m

Porto Alegre Salgado Filho

Sat 1/17

11:15 am-9:39 pm

2 stops37h 24m

$1,015

AustinPorto Alegre

AUS - POA

AUSPOA

Austin Bergstrom

Sat 12/27

3:29 pm-5:00 pm

2 stops46h 31m

Porto Alegre Salgado Filho

Sat 1/17

8:10 pm-7:52 pm

2 stops50h 42m

$1,069

AustinPorto Alegre

AUS - POA

AUSPOA

Austin Bergstrom

Wed 12/17

5:30 am-2:05 pm

3 stops29h 35m

Porto Alegre Salgado Filho

Wed 12/24

6:05 pm-12:58 am

3 stops33h 53m

$1,501

AustinPorto Alegre

AUS - POA

AUSPOA

Austin Bergstrom

Wed 12/17

9:00 am-5:00 pm

3 stops53h 00m

Porto Alegre Salgado Filho

Tue 12/23

4:30 am-10:58 am

2 stops33h 28m

$1,606

AustinPorto Alegre

AUS - POA

AUSPOA

Austin Bergstrom

Wed 3/25

3:42 pm-12:25 am

1 stop30h 43m

Porto Alegre Salgado Filho

Fri 3/27

5:35 pm-2:06 pm

2 stops22h 31m

$1,857

AustinPorto Alegre

AUS - POA

AUSPOA

Austin Bergstrom

Wed 3/25

3:42 pm-12:25 am

1 stop30h 43m

Porto Alegre Salgado Filho

Fri 3/27

5:55 pm-2:06 pm

2 stops22h 11m

$1,905

AustinPorto Alegre

AUS - POA

AUSPOA

Austin Bergstrom

Sat 12/27

3:39 pm-5:25 am

2 stops34h 46m

Porto Alegre Salgado Filho

Fri 1/16

12:50 am-10:16 pm

2 stops48h 26m

$3,387

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Porto Alegre from

How to get the cheapest flight ticket from Austin 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 Saturday is the least expensive day to fly to Porto Alegre. Tickets to fly out on this day can be as low as $612. On the other hand, Tuesday is the most expensive day to depart from Austin because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,112.

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 morning. Flights from Austin to Porto Alegre during this time can be as low as $802. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,110 on average. Flights to Porto Alegre from Austin in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Austin to Porto Alegre

Are you open to changing your travel dates? Check out the ideal times to fly from Austin to Porto Alegre according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Austin to Porto Alegre (AUS to POA) flight deals and tips

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

Direct flights

None
There are no direct flights from Austin to Porto Alegre. There are no popular flight routes from Austin to Porto Alegre.
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  • How far is Austin Bergstrom to Porto Alegre Salgado Filho by plane?

    Austin Bergstrom and Porto Alegre Salgado Filho are 5165.2 mi apart from one another. By plane, this route typically takes 17h 38m.

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

    Prices for flights from Austin Bergstrom Airport to Porto Alegre Salgado Filho Airport refresh daily.

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

  • How old do you have to be to fly from Austin Bergstrom Airport 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 Austin Bergstrom Airport to Porto Alegre Salgado Filho Airport.

  • What documentation or ID do you need to fly to Porto Alegre Salgado Filho Airport?

    The required travel and health documents for your Porto Alegre Salgado Filho Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Porto Alegre Salgado Filho Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Austin to Porto Alegre?

Best airlines flying from Austin to Porto Alegre

Compare and see reviews for airlines that fly from Austin to Porto Alegre with momondo
Airline
Rating
Free Cancellation
Price
GOLPriceFrom $697Free CancellationRating
7.3
1,122 reviews
Search GOL flights
American AirlinesPriceFrom $709Free CancellationRating
7.2
11,037 reviews
Search American Airlines flights
LATAM AirlinesPriceFrom $767Free CancellationRating
7.5
1,873 reviews
Search LATAM Airlines flights

Why use momondo?

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

Finding the right flight to Porto Alegre from Austin 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 Austin to Porto Alegre with flexible booking policies on momondo?

Flights from Austin to Porto Alegre with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

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

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

Yes. momondo can track prices for Austin 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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