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Cheap flights from Sydney to Porto Alegre from $1,237

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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — POA
11 Mar — 18 Mar1
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 9 February 2026.

Sun 22/311:10
SYD
-
POA
1 stop19h 50m
LATAM Airlines
Sun 29/318:05
POA
-
SYD
1 stop23h 45m
LATAM Airlines
Deal found 5/2$1,817
Wed 11/206:00
SYD
-
POA
2 stops25h 00m
Multiple Airlines
Wed 4/318:00
POA
-
SYD
1 stop22h 15m
Multiple Airlines
Deal found 5/2$1,909
Sun 22/308:10
SYD
-
POA
2 stops22h 50m
Multiple Airlines
Sun 29/319:35
POA
-
SYD
2 stops46h 15m
Multiple Airlines
Deal found 5/2$1,948
Wed 25/312:20
SYD
-
POA
1 stop18h 40m
Qantas Airways
Sun 19/406:45
POA
-
SYD
2 stops45h 55m
Qantas Airways
Deal found 7/2$2,090
Wed 25/312:20
SYD
-
POA
2 stops42h 45m
Qantas Airways
Wed 15/406:45
POA
-
SYD
2 stops45h 55m
Qantas Airways
Deal found 7/2$2,111
Tue 24/312:20
SYD
-
POA
2 stops34h 25m
Qantas Airways
Tue 14/419:05
POA
-
SYD
1 stop33h 35m
Qantas Airways
Deal found 7/2$2,131
Fri 13/312:20
SYD
-
POA
2 stops42h 45m
Qantas Airways
Tue 17/306:40
POA
-
SYD
2 stops45h 00m
Qantas Airways
Deal found 5/2$2,143

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 9 February 2026.

Round-trip from

$1,902

One-way from

$1,237

Popular in

December

Cheapest in

May

Average price

$2,171
LATAM Airlines
  • LATAM Airlines
  • 26/3-2/4
  • 5 total stops
  • 56h 05m total
  • Sydney to Porto Alegre
Search Deals
LATAM Airlines
  • LATAM Airlines
  • 3/7
  • 2 total stops
  • 22h 50m total
  • Sydney to Porto Alegre
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($540 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($120 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 9 February 2026.
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

Sun 22/3

11:10-17:00

1 stop19h 50m

Porto Alegre Salgado Filho

Sun 29/3

18:05-07:50

1 stop23h 45m

$1,817

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Sun 22/3

08:10-17:00

2 stops22h 50m

Porto Alegre Salgado Filho

Sun 29/3

19:35-07:50

2 stops46h 15m

$1,948

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Wed 25/3

12:20-17:00

1 stop18h 40m

Porto Alegre Salgado Filho

Mon 13/4

06:45-17:40

2 stops45h 55m

$2,090

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Wed 25/3

12:20-17:00

1 stop18h 40m

Porto Alegre Salgado Filho

Sun 19/4

06:45-17:40

2 stops45h 55m

$2,090

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Wed 25/3

12:20-17:00

1 stop18h 40m

Porto Alegre Salgado Filho

Wed 15/4

06:45-17:40

2 stops45h 55m

$2,090

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Tue 24/3

12:20-08:45

2 stops34h 25m

Porto Alegre Salgado Filho

Sun 19/4

06:45-17:40

2 stops45h 55m

$2,111

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Tue 24/3

12:20-17:05

2 stops42h 45m

Porto Alegre Salgado Filho

Wed 15/4

06:45-17:40

2 stops45h 55m

$2,111

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Tue 24/3

12:20-08:45

2 stops34h 25m

Porto Alegre Salgado Filho

Tue 14/4

19:05-17:40

1 stop33h 35m

$2,131

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Fri 13/3

12:20-17:05

2 stops42h 45m

Porto Alegre Salgado Filho

Tue 17/3

06:40-17:40

2 stops45h 00m

$2,143

SydneyPorto Alegre

SYD - POA

SYDPOA

Sydney Kingsford Smith

Fri 3/7

08:25-18:15

2 stops22h 50m

$1,237

Flights are sorted by cheapest return flights first.

Deals found on 7/2

Showing 1-10 of 13 results
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.

Cheapflights Insights

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

What is the cheapest month to book a flight from Sydney to Porto Alegre?

Currently, March is the cheapest month in which you can book a flight from Sydney to Porto Alegre (average of $1,757). Flying from Sydney to Porto Alegre in December is currently the most expensive (average of $2,824). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 9 February 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
7.5
Good
1,918 reviews
Check prices

Food

6.7

Overall

7.5

Entertainment

7.0

Comfort

7.3

Crew

8.0

Boarding

7.5

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
7.5
Good
1,918 reviews
LATAM Airlines
7.5
Good
1,918 reviews
Check prices

Food

6.7

Overall

7.5

Entertainment

7.0

Comfort

7.3

Crew

8.0

Boarding

7.5

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 18h 40m. Sydney and Porto Alegre are separated by a distance of 12519 km. Both multi-stop and direct flights can be found to your destination and back.

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

    According to our current data, LATAM Airlines ($1,838), offers the cheapest pricing from Sydney to Porto Alegre. LATAM Airlines is priced at 27% 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.

  • What is the cheapest month to book a flight from Sydney to Porto Alegre?

    Currently, March is the cheapest month in which you can book a flight from Sydney to Porto Alegre (average of $1,757). Flying from Sydney to Porto Alegre in December is currently the most expensive (average of $2,824). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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.
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 9 February 2026.
AirlineCheapestAverageFlexibilityOn-time
LATAM AirlinesCheapest$1,838Average$2,643FlexibilityNo 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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