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$124+ Cheap flights from Porto Alegre (POA) to Buenos Aires (BUE)

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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
POA — BUE
May 1 — May 81
Fri 5/1
Fri 5/8
1 adult, Economy
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Cheapflights Tip: The best prices from Porto Alegre Salgado Filho to Buenos Aires are usually found in May or November, booked 72 days in advance, depart on a Monday or Thursday and return on a Wednesday

Cheap flight deals from Porto Alegre to Buenos Aires

Cheapest flights from Porto Alegre to Buenos Aires
Explore the most affordable flight options available from Porto Alegre to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2026.

This Justfly.com deal was found by Cheapflights users on 3/29. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/243:45 pm
POA
-
AEP
1 stop27h 45m
GOL
Wed 4/291:30 pm
AEP
-
POA
1 stop10h 50m
GOL
Deal found 3/29$292
This Mytrip deal was found by Cheapflights users on 3/29. 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.
Wed 5/1311:20 am
POA
-
AEP
1 stop9h 40m
GOL
Tue 5/193:15 am
AEP
-
POA
1 stop15h 35m
GOL
Deal found 3/29$295
This Mytrip deal was found by Cheapflights users on 3/29. 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.
Sat 5/232:40 pm
POA
-
AEP
1 stop18h 40m
GOL
Thu 5/2810:20 am
AEP
-
POA
1 stop13h 20m
GOL
Deal found 3/29$299
This GOL deal was found by Cheapflights users on 3/29. 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.
Mon 6/228:50 pm
POA
-
EZE
1 stop20h 50m
GOL
Thu 6/251:15 pm
EZE
-
POA
1 stop23h 00m
GOL
Deal found 3/29$304
This GOL deal was found by Cheapflights users on 3/27. 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.
Fri 5/153:45 pm
POA
-
AEP
1 stop17h 35m
GOL
Sat 5/163:40 am
AEP
-
POA
1 stop19h 55m
GOL
Deal found 3/27$304
This GOL deal was found by Cheapflights users on 3/27. 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 5/92:50 pm
POA
-
AEP
1 stop26h 30m
GOL
Wed 5/138:30 pm
AEP
-
POA
1 stop18h 35m
GOL
Deal found 3/27$305
This FlightHub deal was found by Cheapflights users on 3/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/232:40 pm
POA
-
AEP
1 stop18h 40m
GOL
Tue 5/269:00 am
AEP
-
POA
2 stops26h 45m
GOL
Deal found 3/29$309
This GOL deal was found by Cheapflights users on 3/29. 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.
Thu 6/256:00 am
POA
-
AEP
1 stop13h 30m
GOL
Sat 6/273:15 am
AEP
-
POA
1 stop15h 45m
GOL
Deal found 3/29$312
This FlightHub deal was found by Cheapflights users on 3/31. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:50 am
POA
-
EZE
1 stop10h 25m
GOL
Mon 8/176:30 pm
EZE
-
POA
1 stop17h 45m
GOL
Deal found 3/31$317
This FlightHub deal was found by Cheapflights users on 3/31. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/125:05 pm
POA
-
AEP
1 stop16h 15m
GOL
Mon 8/172:30 pm
AEP
-
POA
1 stop19h 00m
GOL
Deal found 3/31$317
This FlightHub deal was found by Cheapflights users on 3/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/282:00 pm
POA
-
AEP
1 stop12h 20m
GOL
Sat 6/69:00 am
AEP
-
POA
1 stop10h 00m
GOL
Deal found 3/29$319
This GOL deal was found by Cheapflights users on 3/29. 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.
Thu 6/259:15 pm
POA
-
EZE
1 stop15h 10m
GOL
Sun 6/286:30 pm
EZE
-
POA
1 stop17h 45m
GOL
Deal found 3/29$323

Find flight deals from Porto Alegre to Buenos Aires

Discover tips and strategies to find the most affordable flight options for your journey from Porto Alegre (POA) to Buenos Aires (BUE). 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 April 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$292
(FlightHub)

One-way from

$124
(GOL)

Popular in

July

Cheapest in

May

Average price

$311

Good one-way deal

$148 or less
Provider with most accurate pricing for Porto Alegre Salgado Filho-Buenos Aires (BUE) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Porto Alegre Salgado Filho-Buenos Aires (BUE) flights.
Search Deals
From Porto Alegre Salgado Filho to Buenos Aires (BUE)
Search Deals
One-way flight from Porto Alegre Salgado Filho to Buenos Aires (BUE)
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a one-way flight from Porto Alegre Salgado Filho to Buenos Aires (BUE).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Porto Alegre to Buenos Aires 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 April 1, 2026.
Use the filters below to find and compare flights from Porto Alegre to Buenos Aires that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Porto AlegreBuenos Aires

POA - AEP

POAAEP

Porto Alegre Salgado Filho

Wed 5/6

6:00 am-9:00 pm

1 stop15h 00m

Buenos Aires Jorge Newbery

Sun 5/10

8:30 pm-9:30 am

1 stop13h 00m

$305

Porto AlegreBuenos Aires

POA - EZE

POAEZE

Porto Alegre Salgado Filho

Mon 6/22

8:50 pm-5:40 pm

1 stop20h 50m

Buenos Aires Ministro Pistarini

Thu 6/25

1:15 pm-12:15 pm

1 stop23h 00m

$323

Porto AlegreBuenos Aires

POA - AEP

POAAEP

Porto Alegre Salgado Filho

Tue 5/5

2:00 pm-9:00 pm

1 stop7h 00m

Buenos Aires Jorge Newbery

Tue 5/12

8:30 pm-12:15 pm

1 stop15h 45m

$324

Porto AlegreBuenos Aires

POA - AEP

POAAEP

Porto Alegre Salgado Filho

Sun 6/14

11:15 am-1:40 am

1 stop14h 25m

Buenos Aires Jorge Newbery

Sat 6/20

10:20 am-5:45 pm

1 stop7h 25m

$324

Porto AlegreBuenos Aires

POA - EZE

POAEZE

Porto Alegre Salgado Filho

Thu 8/6

3:45 pm-4:15 pm

1 stop24h 30m

Buenos Aires Ministro Pistarini

Mon 8/10

6:30 pm-3:05 pm

1 stop20h 35m

$330

Porto AlegreBuenos Aires

POA - AEP

POAAEP

Porto Alegre Salgado Filho

Tue 6/9

7:40 pm-9:20 am

1 stop13h 40m

Buenos Aires Jorge Newbery

Tue 6/16

3:40 am-11:40 pm

1 stop20h 00m

$330

Porto AlegreBuenos Aires

POA - EZE

POAEZE

Porto Alegre Salgado Filho

Fri 7/3

9:10 pm-12:25 pm

1 stop15h 15m

Buenos Aires Ministro Pistarini

Mon 7/6

1:15 pm-8:10 pm

1 stop6h 55m

$331
Quickest round-trip

Porto AlegreBuenos Aires

POA - AEP

POAAEP

Porto Alegre Salgado Filho

Thu 6/25

11:20 am-5:20 pm

1 stop6h 00m

Buenos Aires Jorge Newbery

Sun 6/28

9:00 am-7:00 pm

1 stop10h 00m

$331

Porto AlegreBuenos Aires

POA - AEP

POAAEP

Porto Alegre Salgado Filho

Thu 5/7

3:45 pm-1:40 am

1 stop9h 55m

Buenos Aires Jorge Newbery

Tue 5/12

1:40 pm-11:45 pm

1 stop10h 05m

$331

Porto AlegreBuenos Aires

POA - AEP

POAAEP

Porto Alegre Salgado Filho

Fri 9/25

11:20 am-5:20 pm

1 stop6h 00m

Buenos Aires Jorge Newbery

Tue 9/29

9:00 am-11:55 pm

1 stop14h 55m

$331

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/28

Showing 1-10 of 35 resultsSorted by cheapest first
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  • Most accurate provider: When it comes to deals on Porto Alegre-Buenos Aires flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto Alegre-Buenos Aires flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Porto Alegre-Buenos Aires flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Porto Alegre-Buenos Aires flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Porto Alegre-Buenos Aires flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Porto Alegre to Buenos Aires

Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Porto Alegre 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 Porto Alegre to Buenos Aires

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

Use this chart to determine the optimal time to book a round-trip flight from Porto Alegre to Buenos Aires. Price data was last updated on March 13, 2026.

To ensure you get the cheapest price possible for a flight from Porto Alegre to Buenos Aires, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, October is the cheapest month in which you can book a flight from Porto Alegre to Buenos Aires (average of $81). Flying from Porto Alegre to Buenos Aires in December is currently the most expensive (average of $228). 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.

What is the cheapest time of day to fly from POA to BUE?

Find hourly flight availability from Porto Alegre to Buenos Aires. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 1, 2026.

When flying from Porto Alegre to Buenos Aires, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Porto Alegre to Buenos Aires?

How often are flights from Porto Alegre to Buenos Aires delayed?

About 11% of weekly flights between Porto Alegre and Buenos Aires have experienced delays in the past year, with the average delay time being 82 minutes.

What is the most punctual flight time for Porto Alegre to Buenos Aires flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Friday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Porto Alegre to Buenos Aires flights?

Over the last year, Aerolineas Argentinas have had the lowest number of delays on this route, with just 13% of flights being delayed.

Related info for your journey

Find useful and relevant information for your journey from Porto Alegre to Buenos Aires. 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 from for flights from Porto Alegre to Buenos Aires?

    Located just 4.0 mi from the city center, Porto Alegre Salgado Filho is the airport most travelers will use when flying to Buenos Aires from Porto Alegre. Booking flights from Salgado Filho (POA) to Buenos Aires should be relatively easy as there is 1 daily outbound flight to Buenos Aires from 0 different airlines.

  • How long is the flight from Porto Alegre to Buenos Aires?

    There are many flights that can get you from Porto Alegre to Buenos Aires in 20h 50m. Fly via GOL to get the fastest option. There are 543 mi between Porto Alegre and Buenos Aires.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Porto Alegre to Buenos Aires 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 Porto Alegre to Buenos Aires?

    Currently, October is the cheapest month in which you can book a flight from Porto Alegre to Buenos Aires (average of $81). Flying from Porto Alegre to Buenos Aires in December is currently the most expensive (average of $228). 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.

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