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Cheap flights from Massachusetts to Porto Alegre from $338

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Massachusetts to Porto Alegre departing on 1/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Massachusetts to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
10:30 am - 1:30 pm
BOS
-
POA
25h 00m2 stops
United Airlines Logo
2:05 pm - 10:52 am
POA
-
BOS
22h 47m2 stops
$582United Airlines
Fri, Jan 23 - Thu, Feb 5
Copa Airlines Logo
8:44 am - 12:25 am
BOS
-
POA
14h 41m1 stop
Copa Airlines Logo
1:30 am - 11:10 pm
POA
-
BOS
22h 40m1 stop
$602Copa Airlines
Mon, Mar 9 - Sun, Mar 22
United Airlines Logo
7:45 am - 4:20 pm
BOS
-
POA
30h 35m2 stops
United Airlines Logo
3:25 pm - 2:31 pm
POA
-
BOS
24h 06m2 stops
$622United Airlines
Mon, Mar 2 - Mon, Mar 9
Multiple Airlines Logo
8:55 am - 9:20 am
BOS
-
POA
22h 25m1 stop
Multiple Airlines Logo
6:00 pm - 6:35 am
POA
-
BOS
38h 35m2 stops
$682Multiple Airlines
Fri, Jan 23 - Thu, Feb 5
United Airlines Logo
9:30 am - 4:20 pm
BOS
-
POA
28h 50m2 stops
United Airlines Logo
3:25 pm - 2:31 pm
POA
-
BOS
24h 06m2 stops
$697United Airlines
Thu, Mar 5 - Mon, Mar 9
Multiple Airlines Logo
8:55 am - 9:05 am
BOS
-
POA
22h 10m1 stop
Multiple Airlines Logo
11:40 am - 7:35 am
POA
-
BOS
20h 55m2 stops
$709Multiple Airlines
Mon, Mar 2 - Mon, Mar 9
Delta Logo
6:55 am - 6:30 am
BOS
-
POA
21h 35m2 stops
Delta Logo
5:55 pm - 7:35 am
POA
-
BOS
14h 40m1 stop
$711Delta
Sun, Mar 1 - Sun, Mar 8
Delta Logo
8:55 am - 12:40 am
BOS
-
POA
13h 45m1 stop
Delta Logo
5:55 pm - 6:35 am
POA
-
BOS
14h 40m1 stop
$713Delta
Fri, Jan 23 - Thu, Feb 5
Delta Logo
12:40 pm - 11:50 am
BOS
-
POA
22h 10m2 stops
Delta Logo
5:50 pm - 7:35 am
POA
-
BOS
14h 45m1 stop
$717Delta
Mon, Mar 30 - Tue, Apr 14
Delta Logo
6:55 am - 6:30 am
BOS
-
POA
21h 35m2 stops
Delta Logo
6:40 am - 1:13 am
POA
-
BOS
19h 33m2 stops
$721Delta
Sun, Mar 1 - Sun, Mar 8

United Airlines flights from Massachusetts to Porto Alegre

Our best United Airlines deals on Massachusetts to Porto Alegre flight tickets
United Airlines
Jan 23
BOS10:30 amBoston Logan Intl
25h 00m
2 stops
POA1:30 pmPorto Alegre Salgado Filho
Feb 5
POA2:05 pmPorto Alegre Salgado Filho
22h 47m
2 stops
BOS10:52 amBoston Logan Intl
$582
Find similar
United Airlines
Mar 2
BOS7:45 amBoston Logan Intl
30h 35m
2 stops
POA4:20 pmPorto Alegre Salgado Filho
Mar 9
POA3:25 pmPorto Alegre Salgado Filho
24h 06m
2 stops
BOS2:31 pmBoston Logan Intl
$622
Find similar
United Airlines
Mar 5
BOS9:30 amBoston Logan Intl
28h 50m
2 stops
POA4:20 pmPorto Alegre Salgado Filho
Mar 9
POA3:25 pmPorto Alegre Salgado Filho
24h 06m
2 stops
BOS2:31 pmBoston Logan Intl
$697
Find similar

Delta flights from Massachusetts to Porto Alegre

Our best Delta deals on Massachusetts to Porto Alegre flight tickets
Delta
Mar 1
BOS6:55 amBoston Logan Intl
21h 35m
2 stops
POA6:30 amPorto Alegre Salgado Filho
Mar 8
POA5:55 pmPorto Alegre Salgado Filho
14h 40m
1 stop
BOS7:35 amBoston Logan Intl
$711
Find similar
Delta
Jan 23
BOS8:55 amBoston Logan Intl
13h 45m
1 stop
POA12:40 amPorto Alegre Salgado Filho
Feb 5
POA5:55 pmPorto Alegre Salgado Filho
14h 40m
1 stop
BOS6:35 amBoston Logan Intl
$713
Find similar
Delta
Mar 30
BOS12:40 pmBoston Logan Intl
22h 10m
2 stops
POA11:50 amPorto Alegre Salgado Filho
Apr 14
POA5:50 pmPorto Alegre Salgado Filho
14h 45m
1 stop
BOS7:35 amBoston Logan Intl
$717
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Massachusetts 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, momondo users made 832,500 searches. Data last updated December 11, 2025.
Use the filters below to find and compare flights from Massachusetts to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Fri 1/23

10:30 am-1:30 pm

2 stops25h 00m

Porto Alegre Salgado Filho

Thu 2/5

2:05 pm-10:52 am

2 stops22h 47m

$582

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 3/9

8:44 am-12:25 am

1 stop14h 41m

Porto Alegre Salgado Filho

Sun 3/22

1:30 am-11:10 pm

1 stop22h 40m

$602

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 3/2

7:45 am-4:20 pm

2 stops30h 35m

Porto Alegre Salgado Filho

Mon 3/9

3:25 pm-2:31 pm

2 stops24h 06m

$622

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Fri 1/23

8:55 am-9:20 am

1 stop22h 25m

Porto Alegre Salgado Filho

Thu 2/5

6:00 pm-6:35 am

2 stops38h 35m

$682

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Thu 3/5

9:30 am-4:20 pm

2 stops28h 50m

Porto Alegre Salgado Filho

Mon 3/9

3:25 pm-2:31 pm

2 stops24h 06m

$697

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 3/2

8:55 am-9:05 am

1 stop22h 10m

Porto Alegre Salgado Filho

Mon 3/9

11:40 am-7:35 am

2 stops20h 55m

$709

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 3/1

6:55 am-6:30 am

2 stops21h 35m

Porto Alegre Salgado Filho

Sun 3/8

5:55 pm-7:35 am

1 stop14h 40m

$711

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Fri 1/23

8:55 am-12:40 am

1 stop13h 45m

Porto Alegre Salgado Filho

Thu 2/5

5:55 pm-6:35 am

1 stop14h 40m

$713

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 3/30

12:40 pm-11:50 am

2 stops22h 10m

Porto Alegre Salgado Filho

Tue 4/14

5:50 pm-7:35 am

1 stop14h 45m

$717

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 3/1

6:55 am-6:30 am

2 stops21h 35m

Porto Alegre Salgado Filho

Sun 3/8

6:40 am-1:13 am

2 stops19h 33m

$721

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Porto Alegre from

How to get the cheapest flight ticket from Massachusetts to Porto Alegre

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Porto Alegre?

The cheapest month to fly to Porto Alegre from Massachusetts is in June. Flight prices, which tend to average around $486, are often lower during this time because this is during the off-season. If you’re not able to fly to Porto Alegre in June, then May is your next best option. Flight prices from Massachusetts to Porto Alegre during May average around $574.

What is the cheapest day to depart on your flight to Porto Alegre?

Our data shows that Tuesday is the least expensive day to fly to Porto Alegre. Tickets to fly out on this day can be as low as $714. On the other hand, Friday is the most expensive day to depart from Massachusetts because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,701.

What is the cheapest time of day to depart on your flight to Porto Alegre?

Our most recent data shows that the best time of day to fly to Porto Alegre is in the evening. Flights from Massachusetts to Porto Alegre during this time can be as low as $865. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,064 on average. Flights to Porto Alegre from Massachusetts at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Porto Alegre?

You are more likely to see cheaper flights to Porto Alegre from Massachusetts when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto Alegre for around $775 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto Alegre from Massachusetts for as low as $550 on momondo.

Can stopping save me money on Massachusetts to Porto Alegre flights?

You could potentially save up to 15% on your flight if you consider stops on a Massachusetts to Porto Alegre flight.

Cheap Massachusetts to Porto Alegre flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Massachusetts to Porto Alegre

Fastest flight time

21h 10m

Direct flights

None
The fastest flight from Massachusetts to Porto Alegre takes 21h 10m
There are no direct flights from Massachusetts to Porto Alegre. There are no popular flight routes from Massachusetts to Porto Alegre.
Search flight deals

  • When did momondo last update prices for flights from Massachusetts to Porto Alegre Salgado Filho Airport?

    Prices for flights from Massachusetts to Porto Alegre Salgado Filho Airport were last updated today.

  • How many operators does momondo search for flights from Massachusetts to Porto Alegre Salgado Filho Airport?

  • How old do you have to be to fly from Massachusetts to Porto Alegre Salgado Filho Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Massachusetts to Porto Alegre Salgado Filho Airport.

  • What documentation or ID do you need to fly to Porto Alegre Salgado Filho Airport?

    The necessary travel and health documents for your Porto Alegre Salgado Filho Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Massachusetts to Porto Alegre

Compare and see reviews for airlines that fly from Massachusetts to Porto Alegre with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $334Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
Copa AirlinesPriceFrom $486Free CancellationRating
7.6
1,558 reviews
Search Copa Airlines flights
DeltaPriceFrom $498Free CancellationRating
7.9
8,009 reviews
Search Delta flights
LATAM AirlinesPriceFrom $501Free CancellationRating
7.5
1,889 reviews
Search LATAM Airlines flights
American AirlinesPriceFrom $510Free CancellationRating
7.2
11,049 reviews
Search American Airlines flights
GOLPriceFrom $712Free CancellationRating
7.3
1,126 reviews
Search GOL flights

Why use momondo?

Why should I use momondo to find a flight deal from Massachusetts to Porto Alegre?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Massachusetts to Porto Alegre for you.

Can I find flights from Massachusetts to Porto Alegre with flexible booking policies on momondo?

All flight searches from Massachusetts to Porto Alegre on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Massachusetts to Porto Alegre?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Porto Alegre from Massachusetts.

I’m not ready to book a flight from Massachusetts to Porto Alegre right now. Can momondo alert me if prices change?

Price alerts on flights to Porto Alegre from Massachusetts are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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