Porto Alegre

$720+ Cheap flights from Boston (BOS) to Porto Alegre (POA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/29. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — POA
May 28 — Jun 41
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Cheap 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 April 28, 2026.

This LATAM Airlines deal was found by Cheapflights users on 4/26. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/297:00 am
BOS
-
POA
2 stops34h 15m
LATAM Airlines
Mon 11/304:45 am
POA
-
BOS
2 stops20h 38m
LATAM Airlines
Deal found 4/26$720
This LATAM Airlines deal was found by Cheapflights users on 4/25. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/263:50 pm
BOS
-
POA
2 stops22h 05m
LATAM Airlines
Sat 3/204:40 pm
POA
-
BOS
1 stop14h 55m
LATAM Airlines
Deal found 4/25$722
This LATAM Airlines deal was found by Cheapflights users on 4/23. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/315:00 pm
BOS
-
POA
2 stops20h 15m
LATAM Airlines
Mon 9/214:45 am
POA
-
BOS
2 stops19h 40m
LATAM Airlines
Deal found 4/23$732
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Mon 5/48:52 am
BOS
-
POA
1 stop14h 28m
Multiple Airlines
Mon 5/185:35 pm
POA
-
BOS
2 stops40h 37m
Multiple Airlines
Deal found 4/26$735
This Orbitz deal was found by Cheapflights users on 4/27. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:50 pm
BOS
-
POA
2 stops26h 50m
LATAM Airlines
Sat 3/202:25 pm
POA
-
BOS
1 stop17h 10m
LATAM Airlines
Deal found 4/27$748
This LATAM Airlines deal was found by Cheapflights users on 4/25. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/243:50 pm
BOS
-
POA
2 stops22h 05m
LATAM Airlines
Sat 3/203:15 pm
POA
-
BOS
1 stop16h 20m
LATAM Airlines
Deal found 4/25$772
This Trip.com deal was found by Cheapflights users on 4/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/258:55 am
BOS
-
POA
1 stop13h 45m
LATAM Airlines
Sat 3/205:50 pm
POA
-
BOS
1 stop13h 45m
LATAM Airlines
Deal found 4/27$777
This Kiwi.com deal was found by Cheapflights users on 4/26. 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.
Wed 6/34:00 pm
BOS
-
POA
1 stop31h 20m
Multiple Airlines
Sat 6/61:20 am
POA
-
BOS
2 stops21h 22m
Multiple Airlines
Deal found 4/26$782

Find 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 April 28, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$732
(LATAM Airlines)

Popular in

December

Cheapest in

June

Average price

$959
Provider with most accurate pricing for Boston Logan Intl-Porto Alegre Salgado Filho flight deals.
Provider most trusted by Cheapflights users for Boston Logan Intl-Porto Alegre Salgado Filho flights.
From Boston Logan Intl to Porto Alegre Salgado Filho
Highest demand for flights based on searches. 18% potential increase in price ($184 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($44 potential savings vs. average RT price).
Average for round-trip flights in April 2026

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 April 28, 2026.
Use the filters below to find and compare flights from Boston to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 5/18

3:08 pm-6:15 pm

2 stops26h 07m

Porto Alegre Salgado Filho

Mon 6/8

5:50 pm-4:09 pm

2 stops23h 19m

$855

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 8/31

12:42 pm-11:15 am

2 stops21h 33m

Porto Alegre Salgado Filho

Mon 9/21

9:55 pm-7:35 am

1 stop34h 40m

$933

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 5/12

8:45 am-10:40 am

2 stops24h 55m

Porto Alegre Salgado Filho

Tue 5/26

3:45 pm-7:15 pm

3 stops28h 30m

$939

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 5/12

5:05 pm-2:15 pm

2 stops20h 10m

Porto Alegre Salgado Filho

Tue 5/26

9:55 pm-7:35 am

1 stop34h 40m

$973

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Thu 5/14

7:38 am-4:55 pm

2 stops32h 17m

Porto Alegre Salgado Filho

Mon 6/1

5:35 pm-9:05 am

2 stops40h 30m

$985

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Thu 5/14

9:55 am-2:15 pm

1 stop27h 20m

Porto Alegre Salgado Filho

Mon 6/1

7:25 am-12:50 pm

2 stops30h 25m

$1,037
Quickest round-trip

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 5/11

8:52 am-12:20 am

1 stop14h 28m

Porto Alegre Salgado Filho

Mon 5/25

1:20 am-2:44 pm

1 stop14h 24m

$1,059
Cheapest one-way

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Wed 5/13

4:00 pm-12:20 am

1 stop31h 20m

$799

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Wed 5/13

4:00 pm-11:30 am

3 stops42h 30m

$1,013

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 5/11

9:06 am-3:05 pm

3 stops28h 59m

$1,849

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/25

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

Compare providers for flights from Boston to Porto Alegre

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Porto Alegre in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Porto Alegre flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Boston-Porto Alegre flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Boston-Porto Alegre flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Porto Alegre flights, Cheapflights users trust Ovago the most. Ovago 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 Boston-Porto Alegre 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 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 month to book a flight from Boston to Porto Alegre?

Currently, June is the cheapest month in which you can book a flight from Boston to Porto Alegre (average of $486). Flying from Boston to Porto Alegre in December is currently the most expensive (average of $1,287). 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.

How much does it cost to fly round-trip from Boston 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 April 28, 2026.
Read reviews from past customers who have flown Delta,Copa Airlines, andLATAM Airlines from Boston to Porto Alegre. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

7.9

Comfort

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Overall

7.9

Comfort

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Overall

7.9

Comfort

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Overall

7.9

Comfort

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Overall

7.9

Comfort

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Overall

7.9

Comfort

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.
  • How long is the flight from Boston to Porto Alegre?

    LATAM Airlines can get you from Boston to Porto Alegre in just under 20h 15m. Your travel time can differ by up to . Airlines will cover a distance of 5153 mi.

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

    Our cheapest airline available from Boston to Porto Alegre is Copa Airlines. Our recent data shows that you can find tickets from as low as $270 on this airline. Additional options worth looking into are United Airlines and Delta, starting at $334 and $575 round-trip. Copa Airlines is priced at 66% lower than the current average price of a flight leaving 3 months from now.

  • 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.

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

    Currently, June is the cheapest month in which you can book a flight from Boston to Porto Alegre (average of $486). Flying from Boston to Porto Alegre in December is currently the most expensive (average of $1,287). 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

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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.

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 April 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$270Average$679FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$334Average$547FlexibilityNo cancel feeOn-time69%
DeltaCheapest$575Average$915FlexibilityNo cancel feeOn-timeN/A
GOLCheapest$622Average$716FlexibilityNo cancel feeOn-time74%
LATAM AirlinesCheapest$720Average$1,024FlexibilityNo cancel feeOn-time81%

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