Cheap flights from Sydney to Porto Alegre from $1,149

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 15/10. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — POA
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Sydney Kingsford Smith to Porto Alegre Salgado Filho are usually found in March or July, booked 87 days in advance, depart on a Friday or Thursday and return on a Tuesday

Cheap 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 17 September 2025.

Round-trip from

$2,463

One-way from

$1,149

Popular in

December

Cheapest in

March

Average price

$2,860
LATAM Airlines
  • LATAM Airlines
  • 10/3-10/4
  • 3 total stops
  • 46h 35m total
  • Sydney to Porto Alegre
15/10
  • 15/10
  • 3 total stops
  • 45h 00m total
  • Sydney to Porto Alegre
Highest demand for flights based on searches. 16% potential increase in price ($827 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease ($147 potential savings vs. average return price).
Average for round-trip flights in September 2025

Find flight deals from Sydney to Porto Alegre

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 17 September 2025.

Wed 15/1008:15SYD - POA
2 stops25h 35mMultiple Airlines
Fri 31/1018:00POA - SYD
2 stops24h 55mMultiple Airlines
Deal found 15/9$2,505
Wed 15/1012:50SYD - POA
3 stops34h 20mLATAM Airlines
Fri 31/1007:00POA - SYD
2 stops57h 20mLATAM Airlines
Deal found 15/9$2,538
Fri 31/1015:50SYD - POA
2 stops36h 15mQatar Airways
Fri 7/1106:40POA - SYD
2 stops58h 10mQatar Airways
Deal found 15/9$3,039
Sat 1/1115:50SYD - POA
2 stops46h 35mQatar Airways
Sat 8/1112:40POA - SYD
2 stops52h 10mQatar Airways
Deal found 17/9$3,109
Fri 31/1010:20SYD - POA
3 stops42h 15mMultiple Airlines
Fri 7/1115:25POA - SYD
3 stops52h 10mMultiple Airlines
Deal found 15/9$3,241
Sat 1/1121:15SYD - POA
3 stops73h 50mTurkish Airlines
Sat 8/1117:35POA - SYD
3 stops59h 45mTurkish Airlines
Deal found 17/9$3,310
Thu 25/1221:15SYD - POA
3 stops72h 30mTurkish Airlines
Sun 25/114:50POA - SYD
3 stops62h 30mTurkish Airlines
Deal found 15/9$3,503

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 17 September 2025.
Use the filters below to find and compare flights from Sydney to Porto Alegre that are best for you.

Fly from

Sydney

Fly to

Porto Alegre

Route

Depart

Return

Price

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Tue 10/3

11:10-23:25

2 stops26h 15m

Porto Alegre Salgado Filho

Fri 10/4

20:55-06:15

1 stop20h 20m

$2,463

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Wed 15/10

12:50-09:10

3 stops34h 20m

Porto Alegre Salgado Filho

Fri 31/10

07:00-06:20

2 stops57h 20m

$2,538

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Mon 9/3

11:20-16:10

3 stops42h 50m

Porto Alegre Salgado Filho

Thu 9/4

15:25-07:20

3 stops50h 55m

$2,592

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Mon 9/3

11:10-17:00

1 stop19h 50m

Porto Alegre Salgado Filho

Thu 9/4

12:35-06:15

2 stops28h 40m

$2,775

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Wed 15/10

17:20-00:20

3 stops45h 00m

$1,149

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Sun 15/2

14:10-00:25

3 stops48h 15m

$1,191

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Mon 16/3

11:10-17:00

1 stop19h 50m

$1,365

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Sun 15/2

15:50-14:05

2 stops36h 15m

$1,668

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Sun 15/2

11:10-17:00

1 stop19h 50m

$2,011

Flights are sorted by cheapest return flights first.

Deals found on 15/9

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.

Cheapflights Insights

Everything you need to know about your flight from Sydney to Porto Alegre

How far ahead should I book a flight from Sydney to Porto Alegre?

Use this chart to determine the optimal time to book a return flight from Sydney to Porto Alegre. Price data was last updated on 12 September 2025.

The best time to book flights from Sydney to Porto Alegre is 85 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

How much does it cost for a return flight from Sydney to Porto Alegre?

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 17 September 2025.
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.

Entertainment

7.0

Comfort

7.4

Boarding

7.6

Crew

8.0

Overall

7.5

Food

6.7

Reviews

1 / 20
8.0
Excellent

Darrel,Sept 2025

LIM - GRU

The Wi-Fi was not working, so there was no in-flight entertainment. The biggest disappointment was that my Delta diamond status did not transfer any status to my LATAM flight. I WOULD’VE THOUGHT THAT THERE WOULD BE A BETTER WORKING AGREEMENT BETWEEN THE AIRLINES.

Entertainment

7.0

Comfort

7.4

Boarding

7.6

Crew

8.0

Overall

7.5

Food

6.7

Reviews

1 / 20
8.0
Excellent

Darrel,Sept 2025

LIM - GRU

The Wi-Fi was not working, so there was no in-flight entertainment. The biggest disappointment was that my Delta diamond status did not transfer any status to my LATAM flight. I WOULD’VE THOUGHT THAT THERE WOULD BE A BETTER WORKING AGREEMENT BETWEEN THE AIRLINES.

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 26h 15m. 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 ($1,933), offers the cheapest pricing from Sydney to Porto Alegre. LATAM Airlines is priced at 30% 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

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Complete your trip

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

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 17 September 2025.
AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapest$1,933Average$2,810FlexibilityNo cancel feeOn-time81%
Search LATAM Airlines flights

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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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