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Porto Alegre

$322+ Cheap flights from Boston (BOS) to Porto Alegre (POA)

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 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — POA
jun. 28 — jul. 51
sáb. 6/28
sáb. 7/5
1 adult, Economy
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Cheap flight deals from Boston to Porto Alegre

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) 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 junio 23, 2025.

Round-trip from

$599
(oojo)

One-way from

$334
(LATAM Airlines)

Popular in

December

Cheapest in

June

Average price

$486
From Boston Logan Intl to Porto Alegre Salgado Filho
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One-way flight from Boston Logan Intl to Porto Alegre Salgado Filho
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Highest demand for flights based on searches. 18% potential increase in price ($143 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Boston to Porto Alegre

Cheapest flights from Boston to Porto Alegre
Explore the most affordable flight options available from Boston to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 23, 2025.

This oojo deal was found by Cheapflights users on 6/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/189:55 amBOS - POA
1 stop22h 25mLATAM Airlines
sáb. 9/2712:35 pmPOA - BOS
1 stop20h 00mLATAM Airlines
Deal found 6/21$599
This Kiwi.com deal was found by Cheapflights users on 6/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/86:15 amBOS - POA
2 stops41h 00mMultiple Airlines
lun. 8/41:20 amPOA - BOS
1 stop13h 47mMultiple Airlines
Deal found 6/23$739
This Gurufare deal was found by Cheapflights users on 6/22. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/15:59 pmBOS - POA
2 stops23h 16mGOL
lun. 7/146:10 amPOA - BOS
2 stops26h 05mGOL
Deal found 6/22$785
This Copa Airlines deal was found by Cheapflights users on 6/22. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/188:41 amBOS - POA
1 stop14h 39mCopa Airlines
vie. 9/261:27 amPOA - BOS
1 stop18h 55mCopa Airlines
Deal found 6/22$835
This United Airlines deal was found by Cheapflights users on 6/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/252:34 pmBOS - POA
2 stops25h 16mUnited Airlines
vie. 7/253:30 pmPOA - BOS
3 stops30h 48mUnited Airlines
Deal found 6/21$1,434

Cheapflights Fare Finder

Customize your flight search to find flights from Boston 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 2,558,603 searches. Data last updated junio 23, 2025.
Use the filters below to find and compare flights from Boston to Porto Alegre that are best for you.

Fly from

Boston

Fly to

Porto Alegre

Route

Depart

Return

Price

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

jue. 9/18

9:55 am-9:20 am

1 stop22h 25m

Porto Alegre Salgado Filho

sáb. 9/27

12:35 pm-7:35 am

1 stop20h 00m

$599

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

mar. 7/8

6:15 am-12:15 am

2 stops41h 00m

Porto Alegre Salgado Filho

lun. 8/4

1:20 am-2:07 pm

1 stop13h 47m

$739

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

jue. 9/18

8:41 am-12:20 am

1 stop14h 39m

Porto Alegre Salgado Filho

vie. 9/26

1:27 am-7:22 pm

1 stop18h 55m

$835

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

mié. 11/5

7:00 am-6:30 am

2 stops21h 30m

$322

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

mar. 11/4

1:55 pm-5:00 pm

2 stops25h 05m

$327

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

mar. 7/22

8:40 am-9:25 am

2 stops23h 45m

$334

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

mié. 7/23

5:56 pm-4:15 pm

2 stops21h 19m

$425

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

mar. 11/4

10:25 am-1:40 pm

3 stops25h 15m

$498

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

mar. 11/4

7:37 am-12:32 am

1 stop14h 55m

$535

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/21

Best time to book a flight from Boston to Porto Alegre

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

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

Find hourly flight availability from Boston to Porto Alegre. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 23, 2025.

It’s typically best to fly out from Boston to Porto Alegre in the evening. Doing so could potentially save you 19% on the flight price compared to flying at noon, which is usually more expensive.

Rainfall in Porto Alegre by month

Plan your trip to Porto Alegre by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Porto Alegre ranges from 2.8 - 5.1 inches per month. September is typically the wettest month, when rainfall can reach 5.1 in. November is typically the driest time to visit Porto Alegre when rainfall is around 2.8 in.

Temperature in Porto Alegre by month

Plan your trip to Porto Alegre by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Porto Alegre, use this chart to help with planning. For those seeking warmer temperatures, February is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 55.4 F).

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 junio 23, 2025.
Peruse reviews from past customers who have flown with LATAM Airlines, Copa Airlines and GOL from Boston 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
1,790 reviews

Boarding

7.6

Entertainment

7.0

Overall

7.5

Crew

8.1

Comfort

7.4

Food

6.7

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

MCO - BOG

The problem was the delayed departure for airport reason I understood it was not a Latam responsibility. The crew could give something to drink and not only a candy.
LATAM Airlines
7.5
Good
1,790 reviews
LATAM Airlines
7.5
Good
1,790 reviews

Boarding

7.6

Entertainment

7.0

Overall

7.5

Crew

8.1

Comfort

7.4

Food

6.7

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

MCO - BOG

The problem was the delayed departure for airport reason I understood it was not a Latam responsibility. The crew could give something to drink and not only a candy.
Copa Airlines
7.5
Good
1,460 reviews
LATAM Airlines
7.5
Good
1,790 reviews

Boarding

7.6

Entertainment

7.0

Overall

7.5

Crew

8.1

Comfort

7.4

Food

6.7

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

MCO - BOG

The problem was the delayed departure for airport reason I understood it was not a Latam responsibility. The crew could give something to drink and not only a candy.
GOL
7.3
Good
1,076 reviews
LATAM Airlines
7.5
Good
1,790 reviews

Boarding

7.6

Entertainment

7.0

Overall

7.5

Crew

8.1

Comfort

7.4

Food

6.7

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2025

MCO - BOG

The problem was the delayed departure for airport reason I understood it was not a Latam responsibility. The crew could give something to drink and not only a candy.

Related info for your journey

Find useful and relevant information for your journey from Boston to Porto Alegre. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Boston to Porto Alegre round-trip?

    Our cheapest airline available from Boston to Porto Alegre is LATAM Airlines. Our recent data shows that you can find tickets from as low as $599 on this airline. Additional options worth looking into are GOL and Copa Airlines, starting at $785 and $835 round-trip. LATAM Airlines is priced at 7% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Boston to Porto Alegre one-way?

    One-way options have recently been found by users for as low as $365 on LATAM Airlines. Other airlines that offer cheap prices include GOL from $425 and Copa Airlines from $559 one-way.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Boston 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

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Complete your trip

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

Top 5 airlines flying from Boston to Porto Alegre

Discover the top 5 airlines that operate flights from Boston 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 2,558,603 searches. Data last updated junio 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$291Average$575FlexibilityNo cancel feeOn-timeN/A
Copa AirlinesCheapest$450Average$645FlexibilityNo cancel feeOn-time70%
LATAM AirlinesCheapest$501Average$625FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$510Average$684FlexibilityNo cancel feeOn-time71%
GOLCheapest$712Average$863FlexibilityNo cancel feeOn-time74%

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