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Porto Alegre

$358+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — POA
May 4 — May 111
Sun 5/4
Sun 5/11
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 April 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$450
(Copa Airlines)

One-way from

$358
(Delta)

Popular in

December

Cheapest in

September

Average price

$761
Provider with most accurate pricing for Boston Logan Intl-Porto Alegre Salgado Filho flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Porto Alegre Salgado Filho flights.
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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. 9% potential increase in price ($70 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 29, 2025.

This Flysmarter deal was found by Cheapflights users on 4/29. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/95:00 pmBOS - POA
2 stops23h 00mLATAM Airlines
Tue 9/234:40 amPOA - BOS
3 stops21h 20mLATAM Airlines
Deal found 4/29$634
This Expedia deal was found by Cheapflights users on 4/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/94:20 pmBOS - POA
2 stops37h 05mMultiple Airlines
Mon 9/221:27 amPOA - BOS
1 stop18h 55mMultiple Airlines
Deal found 4/29$705
This Copa Airlines deal was found by Cheapflights users on 4/29. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/98:41 amBOS - POA
1 stop14h 39mCopa Airlines
Tue 9/236:35 pmPOA - BOS
2 stops25h 47mCopa Airlines
Deal found 4/29$772
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/189:23 amBOS - POA
2 stops24h 12mAmerican Airlines
Sat 9/277:15 pmPOA - BOS
3 stops18h 50mAmerican Airlines
Deal found 4/29$1,907
This Justfly.com deal was found by Cheapflights users on 4/28. 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.
Sat 8/309:00 amBOS - POA
2 stops22h 10mAvianca
Tue 10/79:50 pmPOA - BOS
2 stops34h 25mAvianca
Deal found 4/28$3,443
This Delta deal was found by Cheapflights users on 4/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/19:55 amBOS - POA
1 stop13h 30mDelta
Wed 10/86:40 amPOA - BOS
2 stops19h 20mDelta
Deal found 4/28$3,910
This Justfly.com deal was found by Cheapflights users on 4/28. 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.
Tue 5/206:55 pmBOS - POA
2 stops17h 25mAir Canada
Mon 7/72:00 pmPOA - BOS
2 stops20h 35mAir Canada
Deal found 4/28$3,998
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Fri 5/306:03 pmBOS - POA
2 stops21h 07mUnited Airlines
Tue 7/85:35 pmPOA - BOS
2 stops19h 52mUnited Airlines
Deal found 4/28$4,059
This Justfly.com deal was found by Cheapflights users on 4/28. 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.
Wed 4/308:35 pmBOS - POA
2 stops26h 20mAzul
Fri 5/25:35 amPOA - BOS
2 stops28h 25mAzul
Deal found 4/28$4,959

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 29, 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

Tue 9/9

3:05 pm-9:25 am

2 stops17h 20m

Porto Alegre Salgado Filho

Tue 9/23

6:40 am-11:24 pm

2 stops17h 44m

$598

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 9/9

4:20 pm-6:25 am

2 stops37h 05m

Porto Alegre Salgado Filho

Mon 9/22

1:27 am-7:22 pm

1 stop18h 55m

$705

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 9/9

8:41 am-12:20 am

1 stop14h 39m

Porto Alegre Salgado Filho

Tue 9/23

6:35 pm-7:22 pm

2 stops25h 47m

$772

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Thu 9/18

9:23 am-10:35 am

2 stops24h 12m

Porto Alegre Salgado Filho

Sat 9/27

7:15 pm-1:05 pm

3 stops18h 50m

$1,907

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sat 8/30

9:00 am-8:10 am

2 stops22h 10m

Porto Alegre Salgado Filho

Tue 10/7

9:50 pm-7:15 am

2 stops34h 25m

$3,443

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 9/1

9:55 am-12:25 am

1 stop13h 30m

Porto Alegre Salgado Filho

Wed 10/8

6:40 am-1:00 am

2 stops19h 20m

$3,910

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 5/20

6:55 pm-1:20 pm

2 stops17h 25m

Porto Alegre Salgado Filho

Mon 7/7

2:00 pm-9:35 am

2 stops20h 35m

$3,998

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Fri 5/30

6:03 pm-4:10 pm

2 stops21h 07m

Porto Alegre Salgado Filho

Tue 7/8

5:35 pm-12:27 pm

2 stops19h 52m

$4,059

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 8/31

2:15 pm-9:45 am

2 stops18h 30m

Porto Alegre Salgado Filho

Wed 10/8

5:35 am-11:58 pm

2 stops19h 23m

$5,437

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 5/4

9:55 am-12:25 am

1 stop13h 30m

$464

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 11 results
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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
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Boston-Porto Alegre flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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 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 April 29, 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 April 29, 2025.
Peruse reviews from past customers who have flown with Azul, Delta and LATAM Airlines 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.
Azul
8.0
Very good
777 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.1

Entertainment

7.5

Reviews

1 / 14
2.0
Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.
Azul
8.0
Very good
777 reviews
Azul
8.0
Very good
777 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.1

Entertainment

7.5

Reviews

1 / 14
2.0
Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.
Delta
8.0
Very good
7,929 reviews
Azul
8.0
Very good
777 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.1

Entertainment

7.5

Reviews

1 / 14
2.0
Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.
LATAM Airlines
7.5
Good
1,767 reviews
Azul
8.0
Very good
777 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.1

Entertainment

7.5

Reviews

1 / 14
2.0
Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.
Copa Airlines
7.5
Good
1,411 reviews
Azul
8.0
Very good
777 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.1

Entertainment

7.5

Reviews

1 / 14
2.0
Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.
United Airlines
7.4
Good
8,696 reviews
Azul
8.0
Very good
777 reviews

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Food

7.1

Entertainment

7.5

Reviews

1 / 14
2.0
Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.

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 Copa Airlines. Our recent data shows that you can find tickets from as low as $450 on this airline. Additional options worth looking into are LATAM Airlines and American Airlines, starting at $537 and $589 round-trip. Copa Airlines is priced at 33% 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.

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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$291Average$499FlexibilityNo cancel feeOn-timeN/A
Copa AirlinesCheapest$493Average$713FlexibilityNo cancel feeOn-time70%
LATAM AirlinesCheapest$501Average$607FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$510Average$683FlexibilityNo cancel feeOn-time71%
GOLCheapest$685Average$1,016FlexibilityNo cancel feeOn-time74%

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