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$347+ Cheap flights from Porto Alegre (POA) to Boston (BOS)

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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
POA — BOS
Aug 27 — Sep 31
Thu 8/27
Thu 9/3
1 adult, Economy
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Cheap flight deals from Porto Alegre to Boston

Cheapest flights from Porto Alegre to Boston
Explore the most affordable flight options available from Porto Alegre to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2026.

This 123 Milhas deal was found by Cheapflights users on 7/26. 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 123 Milhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2812:30 pm
POA
-
BOS
2 stops20h 05m
Multiple Airlines
Sat 11/77:55 am
BOS
-
POA
2 stops21h 20m
Multiple Airlines
Deal found 7/26$668
This FlightHub deal was found by Cheapflights users on 7/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/152:05 pm
POA
-
BOS
2 stops42h 05m
Avianca
Thu 10/228:45 am
BOS
-
POA
2 stops34h 45m
Avianca
Deal found 7/26$700
This 123 Milhas deal was found by Cheapflights users on 7/23. 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 123 Milhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:25 pm
POA
-
BOS
2 stops37h 25m
Multiple Airlines
Sat 10/318:55 am
BOS
-
POA
2 stops24h 20m
Multiple Airlines
Deal found 7/23$731
This Avianca deal was found by Cheapflights users on 7/26. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1311:15 am
POA
-
BOS
2 stops44h 55m
Avianca
Sat 10/248:45 am
BOS
-
POA
2 stops24h 30m
Avianca
Deal found 7/26$738
This Avianca deal was found by Cheapflights users on 7/26. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1411:30 am
POA
-
BOS
2 stops20h 40m
Avianca
Sat 10/248:45 am
BOS
-
POA
2 stops24h 30m
Avianca
Deal found 7/26$768
This Expedia deal was found by Cheapflights users on 7/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:35 pm
POA
-
BOS
2 stops37h 00m
Multiple Airlines
Fri 11/67:15 am
BOS
-
POA
2 stops21h 25m
Multiple Airlines
Deal found 7/26$777
This Expedia deal was found by Cheapflights users on 7/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2311:30 am
POA
-
BOS
2 stops20h 20m
Multiple Airlines
Sun 11/18:55 am
BOS
-
POA
1 stop32h 10m
Multiple Airlines
Deal found 7/25$780
This Expedia deal was found by Cheapflights users on 7/24. 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 11/111:00 am
POA
-
BOS
2 stops45h 35m
Multiple Airlines
Fri 11/67:15 am
BOS
-
POA
2 stops21h 25m
Multiple Airlines
Deal found 7/24$781
This Expedia deal was found by Cheapflights users on 7/24. 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.
Fri 10/3011:45 am
POA
-
BOS
2 stops20h 50m
Multiple Airlines
Fri 11/68:55 am
BOS
-
POA
1 stop25h 20m
Multiple Airlines
Deal found 7/24$782
This 123 Milhas deal was found by Cheapflights users on 7/28. 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 123 Milhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/12:40 pm
POA
-
BOS
2 stops41h 55m
Multiple Airlines
Mon 11/232:46 pm
BOS
-
POA
2 stops30h 54m
Multiple Airlines
Deal found 7/28$784

Find flight deals from Porto Alegre to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Porto Alegre (POA) to Boston (BOS). 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 July 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$668
(123 Milhas)

One-way from

$347
(123 Milhas)

Popular in

April

Cheapest in

September

Average price

$624
Provider with most accurate pricing for Porto Alegre Salgado Filho-Boston Logan Intl flight deals.
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Provider most trusted by Cheapflights users for Porto Alegre Salgado Filho-Boston Logan Intl flights.
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From Porto Alegre Salgado Filho to Boston Logan Intl
Search Deals
One-way flight from Porto Alegre Salgado Filho to Boston Logan Intl
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($156 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Porto Alegre to Boston 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 July 28, 2026.
Use the filters below to find and compare flights from Porto Alegre to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Porto AlegreBoston

POA - BOS

POABOS

Porto Alegre Salgado Filho

Sun 9/20

1:20 am-11:02 pm

1 stop22h 42m

Boston Logan Intl

Mon 10/5

8:47 am-12:20 am

1 stop14h 33m

$903

Porto AlegreBoston

POA - BOS

POABOS

Porto Alegre Salgado Filho

Fri 9/18

11:30 am-6:50 am

2 stops20h 20m

Boston Logan Intl

Mon 9/28

7:10 am-7:20 pm

2 stops35h 10m

$947

Porto AlegreBoston

POA - BOS

POABOS

Porto Alegre Salgado Filho

Wed 9/9

6:00 am-10:14 am

2 stops29h 14m

Boston Logan Intl

Sun 9/27

5:28 pm-12:40 am

2 stops30h 12m

$962

Porto AlegreBoston

POA - BOS

POABOS

Porto Alegre Salgado Filho

Wed 9/16

6:40 am-7:35 am

1 stop25h 55m

Boston Logan Intl

Fri 10/23

9:55 am-1:15 am

1 stop14h 20m

$989

Porto AlegreBoston

POA - BOS

POABOS

Porto Alegre Salgado Filho

Mon 9/14

7:35 am-1:49 pm

2 stops31h 14m

Boston Logan Intl

Thu 10/22

9:55 am-9:20 am

1 stop22h 25m

$1,016

Porto AlegreBoston

POA - BOS

POABOS

Porto Alegre Salgado Filho

Thu 10/22

1:20 am-11:02 pm

1 stop22h 42m

Boston Logan Intl

Sun 11/1

7:41 am-12:25 am

1 stop14h 44m

$1,029

Porto AlegreBoston

POA - BOS

POABOS

Porto Alegre Salgado Filho

Fri 10/23

1:20 am-11:02 pm

1 stop22h 42m

Boston Logan Intl

Sun 11/1

7:41 am-12:25 am

1 stop14h 44m

$1,055

Porto AlegreBoston

POA - BOS

POABOS

Porto Alegre Salgado Filho

Sat 1/16

7:40 pm-3:48 pm

2 stops22h 08m

Boston Logan Intl

Sat 2/20

12:01 pm-6:55 pm

2 stops28h 54m

$1,078
Quickest round-trip

Porto AlegreBoston

POA - BOS

POABOS

Porto Alegre Salgado Filho

Thu 10/29

6:00 pm-7:45 am

1 stop14h 45m

Boston Logan Intl

Wed 12/9

7:00 am-6:40 am

2 stops21h 40m

$1,092
Cheapest one-way

Porto AlegreBoston

POA - BOS

POABOS

Porto Alegre Salgado Filho

Tue 9/15

6:45 pm-7:10 am

2 stops37h 25m

$347

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 17 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Porto Alegre-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto Alegre-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Porto Alegre-Boston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Porto Alegre-Boston flights, Cheapflights users trust FlightHub the most. FlightHub 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 Porto Alegre-Boston 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 Porto Alegre to Boston

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

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

Currently, September is the cheapest month in which you can book a flight from Porto Alegre to Boston (average of $599). Flying from Porto Alegre to Boston in April is currently the most expensive (average of $968). 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 Porto Alegre to Boston?

Airfare is typical for this route at the moment.

Porto Alegre to Boston flights typically cost between $590 and $1,137 in October.
The cheapest round-trip price found within the last 5 days was $668 on Multiple Airlines (Oct 28-Nov 7).

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated July 28, 2026.
Get a feel of what it's like to fly with Copa Airlines from Porto Alegre to Boston by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Copa Airlines
7.6
Good
1,559 reviews

Comfort

7.4

Crew

8.1

Entertainment

6.8

Food

6.9

Overall

7.6

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip
Copa Airlines
7.6
Good
1,559 reviews
Copa Airlines
7.6
Good
1,559 reviews

Comfort

7.4

Crew

8.1

Entertainment

6.8

Food

6.9

Overall

7.6

Boarding

7.8

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip

Related info for your journey

Find useful and relevant information for your journey from Porto Alegre to Boston. 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 Porto Alegre to Boston?

    Departing from Porto Alegre to Boston will take you 42h 05m. Porto Alegre and Boston are separated by a distance of 5153 mi.

  • What is the cheapest airline to fly from Porto Alegre to Boston round-trip?

    According to our current data, Copa Airlines ($580), offers the cheapest pricing from Porto Alegre to Boston. Copa Airlines is 22% cheaper than the average price of flights available within the next 90 days to this destination.

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

    $333 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Copa Airlines and GOL, with prices starting from $439 and $542, respectively.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Porto Alegre to Boston 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 Porto Alegre to Boston?

    Currently, September is the cheapest month in which you can book a flight from Porto Alegre to Boston (average of $599). Flying from Porto Alegre to Boston in April is currently the most expensive (average of $968). 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

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Waltham
Cambridge
Concord
Randolph
Brockton
Seekonk
Hampton Beach
Cranston
Warwick
Peabody
Dedham
Auburn
York Beach
Chelsea
Londonderry
Swansea
Fitchburg
North Falmouth
Braintree
Revere

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Porto Alegre to Boston

Discover the top airline that operate flights from Porto Alegre to Boston. 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 July 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Copa AirlinesCheapest$580Average$946FlexibilityNo cancel feeOn-time70%

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