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Cheap flights from Sydney to Porto Alegre from $2,257

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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — POA
4 Sep — 11 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Sydney to Porto Alegre

Enter your travel dates to find the best prices.

Cheapest flights from Sydney to Porto Alegre
Explore the most affordable flight options available from Sydney to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 August 2026.

Fri 14/811:45 -
1 stop19h 30m
Tue 18/819:05 -
1 stop22h 45m
Deal found 31/7$2,394
Fri 18/911:46 -
2 stops25h 29m
Fri 25/919:05 -
1 stop22h 45m
Deal found 4/8$2,479
Thu 22/1012:46 -
2 stops34h 34m
Thu 12/1105:30 -
2 stops34h 45m
Deal found 2/8$2,485
Thu 22/1010:20 -
3 stops43h 50m
Thu 12/1115:25 -
3 stops52h 10m
Deal found 2/8$2,501
Sat 19/911:46 -
2 stops26h 19m
Sat 26/912:10 -
2 stops29h 40m
Deal found 4/8$2,567
Sat 19/906:30 -
3 stops50h 45m
Sat 26/908:25 -
3 stops36h 00m
Deal found 4/8$2,839

Find flight deals from Sydney to Porto Alegre

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) 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 5 August 2026.

Round-trip from

$2,479

One-way from

$2,257

Popular in

December

Cheapest in

May

Average price

$2,750
LATAM Airlines
  • LATAM Airlines
  • 18/9-25/9
  • 3 total stops
  • 48h 14m total
  • Sydney to Porto Alegre
Search Deals
American Airlines
  • American Airlines
  • 10/12
  • 2 total stops
  • 38h 55m total
  • Sydney to Porto Alegre
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($509 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($135 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Sydney 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 647,157 searches. Data last updated 5 August 2026.
Use the filters below to find and compare flights from Sydney to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

SydneyPorto Alegre

SYD Sydney Kingsford Smith - POA Porto Alegre Salgado Filho

SYDPOA

Sydney Kingsford Smith

Fri 14/8

11:45-18:15

1 stop19h 30m

Porto Alegre Salgado Filho

Tue 18/8

19:05-06:50

1 stop22h 45m

$2,394

SydneyPorto Alegre

SYD Sydney Kingsford Smith - POA Porto Alegre Salgado Filho

SYDPOA

Sydney Kingsford Smith

Fri 18/9

11:46-01:20

2 stops26h 34m

Porto Alegre Salgado Filho

Fri 25/9

14:00-06:50

2 stops27h 50m

$2,482

SydneyPorto Alegre

SYD Sydney Kingsford Smith - POA Porto Alegre Salgado Filho

SYDPOA

Sydney Kingsford Smith

Thu 22/10

12:46-09:20

2 stops34h 34m

Porto Alegre Salgado Filho

Thu 12/11

05:30-06:15

2 stops34h 45m

$2,485

SydneyPorto Alegre

SYD Sydney Kingsford Smith - POA Porto Alegre Salgado Filho

SYDPOA

Sydney Kingsford Smith

Thu 22/10

10:20-16:10

3 stops43h 50m

Porto Alegre Salgado Filho

Thu 12/11

15:25-09:35

3 stops52h 10m

$2,501

SydneyPorto Alegre

SYD Sydney Kingsford Smith - POA Porto Alegre Salgado Filho

SYDPOA

Sydney Kingsford Smith

Sat 19/9

11:46-01:05

2 stops26h 19m

Porto Alegre Salgado Filho

Sat 26/9

12:10-06:50

2 stops29h 40m

$2,567

SydneyPorto Alegre

SYD Sydney Kingsford Smith - POA Porto Alegre Salgado Filho

SYDPOA

Sydney Kingsford Smith

Sat 19/9

06:30-20:15

3 stops50h 45m

Porto Alegre Salgado Filho

Sat 26/9

08:25-09:25

3 stops36h 00m

$2,839

SydneyPorto Alegre

SYD Sydney Kingsford Smith - POA Porto Alegre Salgado Filho

SYDPOA

Sydney Kingsford Smith

Fri 14/8

12:00-15:35

2 stops40h 35m

Porto Alegre Salgado Filho

Tue 18/8

18:45-08:20

3 stops48h 35m

$3,944
Cheapest one-way

SydneyPorto Alegre

SYD Sydney Kingsford Smith - POA Porto Alegre Salgado Filho

SYDPOA

Sydney Kingsford Smith

Thu 10/12

14:05-15:00

2 stops38h 55m

$2,257

SydneyPorto Alegre

SYD Sydney Kingsford Smith - POA Porto Alegre Salgado Filho

SYDPOA

Sydney Kingsford Smith

Thu 10/12

11:20-14:20

3 stops41h 00m

$3,930
Fastest single journey

SydneyPorto Alegre

SYD Sydney Kingsford Smith - POA Porto Alegre Salgado Filho

SYDPOA

Sydney Kingsford Smith

Thu 10/12

08:30-20:45

3 stops26h 15m

$3,991

Flights are sorted by cheapest return flights first.

Deals found on 3/8

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

Best time to book a flight from Sydney to Porto Alegre

Have a flexible travel schedule? Discover the best time to fly to Porto Alegre from Sydney with our price prediction graph.
Estimated return 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.

Reviews of airlines servicing Porto Alegre

Get insights into the airlines that provide service to Porto Alegre. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto Alegre. Reviews last updated 5 August 2026.
Check out reviews from past customers who have flown with LATAM Airlines from Sydney to Porto Alegre to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
LATAM Airlines
7.4
Good
1,971 reviews
Check prices

Comfort

7.3

Overall

7.4

Food

6.7

Entertainment

7.0

Boarding

7.5

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

JC,Jan 2026

FLN - GRU

Plane was late in FLN and missed connection in GRU. No alternative was given to me until 6 hours later and I was delayed by over 12 hours total.
LATAM Airlines
7.4
Good
1,971 reviews
LATAM Airlines
7.4
Good
1,971 reviews
Check prices

Comfort

7.3

Overall

7.4

Food

6.7

Entertainment

7.0

Boarding

7.5

Crew

8.0

Reviews

1 / 20
2.0
Mediocre

JC,Jan 2026

FLN - GRU

Plane was late in FLN and missed connection in GRU. No alternative was given to me until 6 hours later and I was delayed by over 12 hours total.

Related info for your journey

Find useful and relevant information for your journey from Sydney 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 Sydney to Porto Alegre?

    Departing from Sydney to Porto Alegre will take you 19h 30m. Sydney and Porto Alegre are separated by a distance of 12519 km.

  • What is the cheapest airline to fly from Sydney to Porto Alegre round-trip?

    According to our current data, LATAM Airlines ($1,789), offers the cheapest pricing from Sydney to Porto Alegre. LATAM Airlines is priced at 32% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Sydney 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Complete your trip

Complete your trip to Porto Alegre by adding a car hire and/or hotel booking to your travel itinerary.
Porto Alegre car hire
Porto Alegre Salgado Filho Airport car hire

Top airline flying from Sydney to Porto Alegre

Discover the top airline that operate flights from Sydney 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 647,157 searches. Data last updated 5 August 2026.
AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapest$1,789Average$2,672FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Sydney to Porto Alegre?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Porto Alegre from Sydney today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Sydney to Porto Alegre?

Cheapflights simply makes it quick and affordable to book flights from Sydney to Porto Alegre by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Sydney to Porto Alegre with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Sydney to Porto Alegre, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Sydney to Porto Alegre become cheaper?

Yes, Cheapflights offers price alerts on Sydney to Porto Alegre flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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