HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Porto Alegre

$309+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — POA
Jan 25 — Feb 11
Sat 1/25
Sat 2/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Porto Alegre with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 January 20, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$425
(LATAM Airlines)

One-way from

$309
(FlightHub)

Popular in

July

Cheapest in

September

Average price

$692
Provider with most accurate pricing for Boston Logan Intl-Porto Alegre Salgado Filho flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Porto Alegre Salgado Filho flights.
Search Deals
From Boston Logan Intl to Porto Alegre Salgado Filho
Search Deals
One-way flight from Boston Logan Intl to Porto Alegre Salgado Filho
Search Deals
High demand for flights, 17% potential price rise
Search Deals
Best time to find cheap flights, 3% potential price drop
Search Deals
Average for round-trip flights in January 2025
Search Deals

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 January 20, 2025.

This LATAM Airlines deal was found by Cheapflights users on 1/20. 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.
Wed 4/28:20 amBOS - POA
2 stops21h 05mLATAM Airlines
Thu 5/157:20 amPOA - BOS
2 stops18h 43mLATAM Airlines
Deal found 1/20$425
This Delta deal was found by Cheapflights users on 1/18. 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.
Tue 10/284:20 pmBOS - POA
2 stops23h 40mDelta
Wed 11/125:55 pmPOA - BOS
1 stop14h 40mDelta
Deal found 1/18$503
This Copa Airlines deal was found by Cheapflights users on 1/19. 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.
Mon 2/107:49 amBOS - POA
1 stop14h 06mCopa Airlines
Wed 2/261:15 amPOA - BOS
1 stop19h 00mCopa Airlines
Deal found 1/19$531
This American Airlines deal was found by Cheapflights users on 1/19. 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 8/2810:40 amBOS - POA
2 stops22h 55mAmerican Airlines
Tue 9/97:35 pmPOA - BOS
3 stops18h 30mAmerican Airlines
Deal found 1/19$617
This Gurufare deal was found by Cheapflights users on 1/19. 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.
Thu 8/284:49 pmBOS - POA
2 stops19h 41mGOL
Sun 9/76:35 pmPOA - BOS
2 stops16h 27mGOL
Deal found 1/19$708
This Expedia deal was found by Cheapflights users on 1/19. 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.
Sun 2/910:00 amBOS - POA
2 stops32h 05mMultiple Airlines
Tue 2/254:00 amPOA - BOS
2 stops33h 38mMultiple Airlines
Deal found 1/19$992

Find flights from Boston to Porto Alegre within your budget

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 January 20, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Wed 4/2

8:20 am-6:25 am

2 stops21h 05m

Porto Alegre Salgado Filho

Thu 5/15

7:20 am-1:03 am

2 stops18h 43m

$425

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Wed 4/2

8:28 am-12:25 am

1 stop14h 57m

Porto Alegre Salgado Filho

Wed 5/14

1:23 am-7:26 pm

1 stop19h 03m

$498

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 2/9

12:30 pm-3:30 pm

2 stops25h 00m

Porto Alegre Salgado Filho

Wed 2/26

4:10 pm-10:13 am

2 stops20h 03m

$678

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 2/9

10:00 am-8:05 pm

2 stops32h 05m

Porto Alegre Salgado Filho

Tue 2/25

4:00 am-11:38 am

2 stops33h 38m

$992

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 2/9

5:40 am-6:30 am

2 stops22h 50m

Porto Alegre Salgado Filho

Wed 2/26

7:40 pm-6:50 am

1 stop13h 10m

$1,011

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 2/10

1:06 pm-3:40 pm

2 stops24h 34m

Porto Alegre Salgado Filho

Wed 2/26

3:40 am-12:51 am

2 stops47h 11m

$1,260

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Fri 2/21

9:00 am-11:10 am

2 stops24h 10m

$309

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sat 2/22

7:45 pm-2:00 pm

2 stops16h 15m

$313

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Thu 2/20

8:16 pm-11:35 am

3 stops37h 19m

$333

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sat 2/22

7:49 am-11:55 pm

1 stop14h 06m

$420

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

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 January.
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*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 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.

Travel insights for flights from Boston to Porto Alegre

Get recent, data-driven insights about flights from Boston to Porto Alegre including ideal travel times, pricing trends, and more.

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 January 20, 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.

What is the cheapest day to fly from Boston to Porto Alegre?

Use this chart to determine the cheapest time to fly round-trip from Boston to Porto Alegre. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Boston to Porto Alegre flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 January 20, 2025.
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Copa Airlines
7.7
Good
1,661 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

LATAM Airlines
7.5
Good
1,858 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

GOL
7.3
Good
1,091 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,521 reviews

Crew

8.6

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 $425 on this airline. Additional options worth looking into are Copa Airlines and American Airlines, starting at $498 and $678 round-trip. LATAM Airlines is priced at 52% 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 $309 on LATAM Airlines. Other airlines that offer cheap prices include Delta from $313 and Copa Airlines from $420 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 4 airlines flying from Boston to Porto Alegre

Discover the top 4 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 January 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$499Average$1,260FlexibilityNo cancel feeOn-time69%
LATAM AirlinesCheapest$501Average$651FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$510Average$712FlexibilityNo cancel feeOn-time71%
Copa AirlinesCheapest$580Average$991FlexibilityNo cancel feeOn-time70%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.