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Porto Alegre

$343+ 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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — POA
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Porto Alegre Salgado Filho are usually found in June or May, booked 23 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

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 September 11, 2025.

Round-trip from

$656
(Copa Airlines)

One-way from

$343
(Kiwi.com)

Popular in

August

Cheapest in

June

Average price

$575
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. 12% potential increase in price ($106 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($29 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 11, 2025.

This Copa Airlines deal was found by Cheapflights users on 9/10. 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.
Wed 10/158:41 amBOS - POA
1 stop14h 39mCopa Airlines
Wed 10/291:30 amPOA - BOS
1 stop22h 32mCopa Airlines
Deal found 9/10$656
This Copa Airlines deal was found by Cheapflights users on 9/10. 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 10/68:41 amBOS - POA
1 stop14h 39mCopa Airlines
Wed 10/81:25 amPOA - BOS
1 stop22h 28mCopa Airlines
Deal found 9/10$695
This KAYAK deal was found by Cheapflights users on 9/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/188:41 amBOS - POA
1 stop14h 39mCopa Airlines
Fri 9/261:25 amPOA - BOS
1 stop18h 57mCopa Airlines
Deal found 9/10$696
This Expedia deal was found by Cheapflights users on 9/11. 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.
Wed 9/243:15 pmBOS - POA
2 stops22h 30mAir Canada
Wed 10/155:10 pmPOA - BOS
2 stops22h 20mAir Canada
Deal found 9/11$752
This Copa Airlines deal was found by Cheapflights users on 9/10. 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 9/228:41 amBOS - POA
1 stop14h 39mCopa Airlines
Tue 10/141:25 amPOA - BOS
1 stop22h 28mCopa Airlines
Deal found 9/10$756
This Priceline deal was found by Cheapflights users on 9/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:00 amBOS - POA
2 stops33h 10mAir Canada
Wed 10/155:10 pmPOA - BOS
2 stops17h 20mAir Canada
Deal found 9/11$758
This Air Canada deal was found by Cheapflights users on 9/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/154:45 pmBOS - POA
2 stops20h 50mAir Canada
Thu 10/303:25 pmPOA - BOS
2 stops21h 47mAir Canada
Deal found 9/11$765
This Mytrip deal was found by Cheapflights users on 9/10. 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 9/2412:20 pmBOS - POA
3 stops32h 50mMultiple Airlines
Wed 10/155:30 amPOA - BOS
2 stops26h 45mMultiple Airlines
Deal found 9/10$771
This Gotogate deal was found by Cheapflights users on 9/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/259:00 amBOS - POA
2 stops24h 25mGOL
Mon 10/2011:05 amPOA - BOS
2 stops21h 10mGOL
Deal found 9/10$775
This Mytrip deal was found by Cheapflights users on 9/11. 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 10/49:00 amBOS - POA
2 stops30h 25mMultiple Airlines
Wed 10/1511:25 amPOA - BOS
2 stops20h 50mMultiple Airlines
Deal found 9/11$776
This Copa Airlines deal was found by Cheapflights users on 9/10. 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 9/228:41 amBOS - POA
1 stop14h 39mCopa Airlines
Thu 10/161:25 amPOA - BOS
1 stop22h 28mCopa Airlines
Deal found 9/10$791

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 September 11, 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

Wed 10/15

8:41 am-12:20 am

1 stop14h 39m

Porto Alegre Salgado Filho

Wed 10/29

1:30 am-11:02 pm

1 stop22h 32m

$656

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 10/6

8:41 am-12:20 am

1 stop14h 39m

Porto Alegre Salgado Filho

Wed 10/8

1:25 am-10:53 pm

1 stop22h 28m

$695

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 9/22

8:41 am-12:20 am

1 stop14h 39m

Porto Alegre Salgado Filho

Sun 10/5

1:25 am-2:11 pm

1 stop13h 46m

$696

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 9/22

8:41 am-12:20 am

1 stop14h 39m

Porto Alegre Salgado Filho

Tue 10/14

1:25 am-10:53 pm

1 stop22h 28m

$756

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Thu 9/25

6:00 am-4:10 pm

2 stops33h 10m

Porto Alegre Salgado Filho

Wed 10/15

5:10 pm-9:30 am

2 stops17h 20m

$758

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Thu 9/25

9:00 am-10:25 am

2 stops24h 25m

Porto Alegre Salgado Filho

Mon 10/20

11:05 am-7:15 am

2 stops21h 10m

$775

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 9/22

8:41 am-12:20 am

1 stop14h 39m

Porto Alegre Salgado Filho

Thu 10/16

1:25 am-10:53 pm

1 stop22h 28m

$791

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 9/22

8:41 am-12:20 am

1 stop14h 39m

Porto Alegre Salgado Filho

Fri 10/17

1:25 am-10:53 pm

1 stop22h 28m

$791

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Wed 9/24

12:20 pm-10:10 pm

3 stops32h 50m

Porto Alegre Salgado Filho

Wed 10/15

8:55 pm-11:59 pm

3 stops28h 04m

$793

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 9/22

6:49 pm-12:20 am

2 stops52h 31m

Porto Alegre Salgado Filho

Thu 10/16

1:25 am-10:53 pm

1 stop22h 28m

$797

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 19 results
1
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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

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

Use this chart to determine the optimal time to book a round-trip flight from Boston to Porto Alegre. Price data was last updated on August 29, 2025.

Booking 23 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boston to Porto Alegre. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 September 11, 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.

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 September 11, 2025.
Read reviews from past customers who have flown Delta, Copa Airlines, and LATAM 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.
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Copa Airlines
7.6
Good
1,531 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
LATAM Airlines
7.5
Good
1,847 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
GOL
7.3
Good
1,105 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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?

    Copa Airlines and GOL can get you from Boston to Porto Alegre in just under 14h 39m. Your travel time can differ by up to 9h 46m. Airlines will cover a distance of 5153 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Our cheapest airline available from Boston to Porto Alegre is Delta. Our recent data shows that you can find tickets from as low as $291 on this airline. Additional options worth looking into are Copa Airlines and LATAM Airlines, starting at $450 and $501 round-trip. Delta is priced at 59% 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$291Average$653FlexibilityNo cancel feeOn-timeN/A
Copa AirlinesCheapest$450Average$667FlexibilityNo cancel feeOn-time70%
LATAM AirlinesCheapest$501Average$646FlexibilityNo cancel feeOn-time81%
American AirlinesCheapest$510Average$684FlexibilityNo cancel feeOn-time71%
GOLCheapest$712Average$956FlexibilityNo cancel feeOn-time74%

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