$328 Cheap Flights from Boston (BOS) to Porto Alegre (POA)

View $328 flight on Sun, Oct 5, 2025Opens in a new window

Popular airlines from Logan International Airport (BOS) to Salgado Filho Intl. Airport (POA)

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Cheap Flights from Boston to Porto Alegre (BOS-POA)

Prices were available within the past 7 days and start at $328 for one-way flights and $619 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Sep 10 - Wed, Sep 24
BOS
Boston
POA
Porto Alegre
$619 Roundtrip, found 18 hours ago
$619
Roundtrip
found 18 hours ago
Select Delta flight, departing Wed, Sep 10 from Boston to Porto Alegre, returning Wed, Sep 24, priced at $619 found 18 hours ago
Delta
Wed, Sep 24 - Sat, Sep 27
BOS
Boston
POA
Porto Alegre
$619 Roundtrip, found 3 days ago
$619
Roundtrip
found 3 days ago
Select Delta flight, departing Wed, Sep 24 from Boston to Porto Alegre, returning Sat, Sep 27, priced at $619 found 3 days ago
Delta
Thu, Sep 11 - Sat, Sep 27
BOS
Boston
POA
Porto Alegre
$620 Roundtrip, found 6 days ago
$620
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Sep 11 from Boston to Porto Alegre, returning Sat, Sep 27, priced at $620 found 6 days ago
Delta
Mon, Aug 25 - Sun, Oct 5
BOS
Boston
POA
Porto Alegre
$625 Roundtrip, found 6 days ago
$625
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Aug 25 from Boston to Porto Alegre, returning Sun, Oct 5, priced at $625 found 6 days ago
Delta
Sun, Oct 5 - Wed, Oct 22
BOS
Boston
POA
Porto Alegre
$625 Roundtrip, found 3 days ago
$625
Roundtrip
found 3 days ago
Select Delta flight, departing Sun, Oct 5 from Boston to Porto Alegre, returning Wed, Oct 22, priced at $625 found 3 days ago
Delta
Wed, Sep 10 - Thu, Sep 18
BOS
Boston
POA
Porto Alegre
$627 Roundtrip, found 18 hours ago
$627
Roundtrip
found 18 hours ago
Select Delta flight, departing Wed, Sep 10 from Boston to Porto Alegre, returning Thu, Sep 18, priced at $627 found 18 hours ago
Copa
Tue, Sep 2 - Tue, Oct 7
BOS
Boston
POA
Porto Alegre
$655 Roundtrip, found 13 hours ago
$655
Roundtrip
found 13 hours ago
Select Copa flight, departing Tue, Sep 2 from Boston to Porto Alegre, returning Tue, Oct 7, priced at $655 found 13 hours ago
LATAM Airlines Group
Sun, Aug 24 - Sun, Sep 21
BOS
Boston
POA
Porto Alegre
$684 Roundtrip, found 6 hours ago
$684
Roundtrip
found 6 hours ago
Select LATAM Airlines Group flight, departing Sun, Aug 24 from Boston to Porto Alegre, returning Sun, Sep 21, priced at $684 found 6 hours ago
GOL Linhas Aereas S.A.
Wed, Oct 22 - Fri, Nov 14
BOS
Boston
POA
Porto Alegre
$753 Roundtrip, found 3 days ago
$753
Roundtrip
found 3 days ago
Select GOL Linhas Aereas S.A. flight, departing Wed, Oct 22 from Boston to Porto Alegre, returning Fri, Nov 14, priced at $753 found 3 days ago
avianca
Tue, Sep 9 - Sun, Sep 21
BOS
Boston
POA
Porto Alegre
$790 Roundtrip, found 18 hours ago
$790
Roundtrip
found 18 hours ago
Select avianca flight, departing Tue, Sep 9 from Boston to Porto Alegre, returning Sun, Sep 21, priced at $790 found 18 hours ago

Alternative airports near Porto Alegre

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Salgado Filho Intl. POA. Cheapest and Closest option available. Average driving time to city center is 23 minutes. Flights from $707
POA
Salgado Filho Intl.
CheapestClosest
Average driving time to city center23 min
Flights from $707
Flights from Boston (BOS) to Porto Alegre (POA)
Origin airport
Logan Intl.
Destination airport
Salgado Filho Intl.
Airlines serving
Air Canada, American Airlines, Azul, Copa, Delta, GOL Linhas Aereas S.A., LATAM Airlines Group, United
Roundtrip price
$618
Distance
5155 mi

Boston to Porto Alegre Flights

The cheapest times to fly from Boston to Porto Alegre

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boston to Porto Alegre are during the month of September. You can find some of the cheapest flights from Boston to Porto Alegre with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boston to Porto Alegre

Sunday is one of the best days to book for cheap flights from Boston to Porto Alegre: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Boston to Porto Alegre

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boston to Porto Alegre in 2025. You can also book with separate airlines for your outbound and return journeys, from $328 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boston to Porto Alegre flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boston to Porto Alegre airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Logan Intl. Airport (BOS) to Salgado Filho Intl. Airport (POA) cost?
Discover the latest flight deals from BOS to POA by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from BOS to POA?
The cheapest flights from BOS to POA are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from BOS to POA?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from BOS to POA. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Logan Intl. Airport (BOS) to Salgado Filho Intl. Airport (POA)?
You'll need to hop on a flight with a layover if you're traveling from Logan Intl. Airport (BOS) to Salgado Filho Intl. Airport (POA). Direct flights don't operate daily on this route. However, just filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from BOS to POA?
Usually you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can vary depending on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Logan Intl. Airport (BOS) to Salgado Filho Intl. Airport (POA)?
Choose a flight from Logan Intl. Airport (BOS) to Salgado Filho Intl. Airport (POA) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this time are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Logan Intl. Airport (BOS) to Salgado Filho Intl. Airport (POA) last-minute?
Booking your ticket from BOS to POA just before your getaway is generally more expensive. But if you're flexible with your itinerary, you could grab a cheap last-minute fare.
Is it cheaper to book a BOS to POA flight and hotel package?
Compared with arranging flights and hotels separately, booking a BOS to POA flight and hotel package with Expedia could result in significant savings. Better still, having everything in one easy place will take the hassle out of travel planning. Just pick your flights and select from our wide range of stays, then tailor your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Logan Intl. Airport (BOS) to Salgado Filho Intl. Airport (POA)?
In most cases, you can cancel or modify your BOS to POA flight. However, additional charges may apply, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like further details, visit our Customer Service portal.

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