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Cheap flights from Massachusetts to Porto Alegre from $368

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 10/15. 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
1 adult, Economy, 0 bags

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Travel Warning: Due to flooding, the airport may be currently closed. Check local travel advisories before booking.

Find the cheapest flights from Massachusetts to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
Copa Airlines Logo
8:47 am - 12:20 amBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
14h 33m1 stop Panama City Tocumen Intl
Copa Airlines Logo
1:30 am - 10:01 pmPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
22h 31m1 stop Panama City Tocumen Intl
$680Copa Airlines
Mon, Oct 12 - Mon, Nov 2
Copa Airlines Logo
8:47 am - 12:20 amBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
14h 33m1 stop Panama City Tocumen Intl
Copa Airlines Logo
1:20 am - 2:29 pmPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
14h 09m1 stop Panama City Tocumen Intl
$700Copa Airlines
Tue, Sep 15 - Sat, Oct 3
Multiple Airlines Logo
8:45 am - 10:45 amBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
25h 00m2 stops Bogotá El Dorado Sao Paulo Guarulhos Intl
Multiple Airlines Logo
6:45 pm - 6:50 amPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
37h 05m2 stops Sao Paulo Guarulhos Intl Bogotá El Dorado
$717Multiple Airlines
Tue, Aug 25 - Thu, Sep 17
LATAM Airlines Logo
8:55 am - 8:30 amBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
21h 35m1 stop Sao Paulo Guarulhos Intl
LATAM Airlines Logo
6:00 pm - 2:33 pmPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
22h 33m2 stops Sao Paulo Guarulhos Intl New York John F Kennedy Intl
$728LATAM Airlines
Sun, Nov 15 - Tue, Nov 17
LATAM Airlines Logo
7:20 am - 6:15 pmBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
33h 55m2 stops Miami Santiago Arturo Merino Benitez
LATAM Airlines Logo
9:55 pm - 7:35 amPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
34h 40m1 stop Sao Paulo Guarulhos Intl
$756LATAM Airlines
Wed, Sep 2 - Fri, Sep 18
Multiple Airlines Logo
8:45 am - 12:40 amBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
38h 55m2 stops Bogotá El Dorado Sao Paulo Guarulhos Intl
Multiple Airlines Logo
7:35 pm - 7:35 amPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
37h 00m2 stops Sao Paulo Guarulhos Intl Bogotá El Dorado
$762Multiple Airlines
Tue, Oct 20 - Tue, Oct 27
GOL Logo
7:42 am - 8:35 pmBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
35h 53m2 stops Miami Sao Paulo Guarulhos Intl
GOL Logo
1:40 pm - 10:14 amPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
21h 34m2 stops Sao Paulo Guarulhos Intl Miami
$952GOL
Mon, Sep 21 - Wed, Sep 30
United Airlines Logo
5:45 am - 2:20 pmBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
31h 35m2 stops Washington, D.C. Dulles Intl Sao Paulo Guarulhos Intl
United Airlines Logo
3:30 pm - 12:46 amPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
34h 16m3 stops Rio de Janeiro–Galeão Intl Houston George Bush Intcntl Chicago O'Hare Intl
$1,250United Airlines
Thu, Oct 15 - Mon, Oct 26
United Airlines Logo
5:45 am - 9:55 amBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
51h 10m2 stops Washington, D.C. Dulles Intl Sao Paulo Guarulhos Intl
United Airlines Logo
3:30 pm - 12:46 amPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
34h 16m3 stops Rio de Janeiro–Galeão Intl Houston George Bush Intcntl Chicago O'Hare Intl
$1,422United Airlines
Thu, Oct 15 - Sun, Oct 25
GOL Logo
3:08 pm - 3:00 pmBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
21h 52m2 stops Miami Sao Paulo Guarulhos Intl
GOL Logo
5:40 am - 8:51 pmPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
41h 11m2 stops Sao Paulo Guarulhos Intl Miami
$1,982GOL
Wed, Dec 16 - Tue, Jan 5

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LATAM Airlines flights from Massachusetts to Porto Alegre

Our best LATAM Airlines deals on Massachusetts to Porto Alegre flight tickets
LATAM Airlines
Nov 15
BOS8:55 amBoston Logan Intl
21h 35m
1 stop
POA8:30 amPorto Alegre Salgado Filho
Nov 17
POA6:00 pmPorto Alegre Salgado Filho
22h 33m
2 stops
BOS2:33 pmBoston Logan Intl
$728
LATAM Airlines
Sep 2
BOS7:20 amBoston Logan Intl
33h 55m
2 stops
POA6:15 pmPorto Alegre Salgado Filho
Sep 18
POA9:55 pmPorto Alegre Salgado Filho
34h 40m
1 stop
BOS7:35 amBoston Logan Intl
$756
LATAM Airlines
Sep 2
BOS3:20 pmBoston Logan Intl
25h 55m
2 stops
POA6:15 pmPorto Alegre Salgado Filho
Sep 18
POA4:45 amPorto Alegre Salgado Filho
19h 45m
2 stops
BOS11:30 pmBoston Logan Intl
$757

Copa Airlines flights from Massachusetts to Porto Alegre

Our best Copa Airlines deals on Massachusetts to Porto Alegre flight tickets
Copa Airlines
Oct 12
BOS8:47 amBoston Logan Intl
14h 33m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Nov 2
POA1:30 amPorto Alegre Salgado Filho
22h 31m
1 stop
BOS10:01 pmBoston Logan Intl
$680
Copa Airlines
Sep 15
BOS8:47 amBoston Logan Intl
14h 33m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Oct 3
POA1:20 amPorto Alegre Salgado Filho
14h 09m
1 stop
BOS2:29 pmBoston Logan Intl
$700
Copa Airlines
Sep 21
BOS3:55 pmBoston Logan Intl
31h 25m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Sep 29
POA1:20 amPorto Alegre Salgado Filho
22h 42m
1 stop
BOS11:02 pmBoston Logan Intl
$705

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 August 7, 2026.
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

Cheapest round-trip

BostonPorto Alegre

BOS Boston Logan Intl - POA Porto Alegre Salgado Filho

BOSPOA

Boston Logan Intl

Mon 10/12

8:47 am-12:20 am

1 stop14h 33m

Porto Alegre Salgado Filho

Mon 11/2

1:30 am-10:01 pm

1 stop22h 31m

$680
Quickest round-trip

BostonPorto Alegre

BOS Boston Logan Intl - POA Porto Alegre Salgado Filho

BOSPOA

Boston Logan Intl

Tue 9/15

8:47 am-12:20 am

1 stop14h 33m

Porto Alegre Salgado Filho

Sat 10/3

1:20 am-2:29 pm

1 stop14h 09m

$700

BostonPorto Alegre

BOS Boston Logan Intl - POA Porto Alegre Salgado Filho

BOSPOA

Boston Logan Intl

Tue 8/25

8:45 am-10:45 am

2 stops25h 00m

Porto Alegre Salgado Filho

Thu 9/17

6:45 pm-6:50 am

2 stops37h 05m

$717

BostonPorto Alegre

BOS Boston Logan Intl - POA Porto Alegre Salgado Filho

BOSPOA

Boston Logan Intl

Sun 11/15

8:55 am-8:30 am

1 stop21h 35m

Porto Alegre Salgado Filho

Tue 11/17

6:00 pm-2:33 pm

2 stops22h 33m

$728

BostonPorto Alegre

BOS Boston Logan Intl - POA Porto Alegre Salgado Filho

BOSPOA

Boston Logan Intl

Wed 9/2

7:20 am-6:15 pm

2 stops33h 55m

Porto Alegre Salgado Filho

Fri 9/18

9:55 pm-7:35 am

1 stop34h 40m

$756

BostonPorto Alegre

BOS Boston Logan Intl - POA Porto Alegre Salgado Filho

BOSPOA

Boston Logan Intl

Tue 10/20

8:45 am-12:40 am

2 stops38h 55m

Porto Alegre Salgado Filho

Tue 10/27

7:35 pm-7:35 am

2 stops37h 00m

$762

BostonPorto Alegre

BOS Boston Logan Intl - POA Porto Alegre Salgado Filho

BOSPOA

Boston Logan Intl

Mon 9/21

7:42 am-8:35 pm

2 stops35h 53m

Porto Alegre Salgado Filho

Wed 9/30

1:40 pm-10:14 am

2 stops21h 34m

$952

BostonPorto Alegre

BOS Boston Logan Intl - POA Porto Alegre Salgado Filho

BOSPOA

Boston Logan Intl

Thu 10/15

5:45 am-2:20 pm

2 stops31h 35m

Porto Alegre Salgado Filho

Mon 10/26

3:30 pm-12:46 am

3 stops34h 16m

$1,250

BostonPorto Alegre

BOS Boston Logan Intl - POA Porto Alegre Salgado Filho

BOSPOA

Boston Logan Intl

Thu 10/15

5:45 am-9:55 am

2 stops51h 10m

Porto Alegre Salgado Filho

Sun 10/25

3:30 pm-12:46 am

3 stops34h 16m

$1,422

BostonPorto Alegre

BOS Boston Logan Intl - POA Porto Alegre Salgado Filho

BOSPOA

Boston Logan Intl

Wed 12/16

3:08 pm-3:00 pm

2 stops21h 52m

Porto Alegre Salgado Filho

Tue 1/5

5:40 am-8:51 pm

2 stops41h 11m

$1,982

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 March. Flight prices, which tend to average around $712, are often lower during this time because this is during the off-season. If you’re not able to fly to Porto Alegre in March, then November is your next best option. Flight prices from Massachusetts to Porto Alegre during November average around $720.

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

You could potentially save up to 27% 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

23h 54m

Direct flights

None
The fastest flight from Massachusetts to Porto Alegre takes 23h 54m
There are no direct flights from Massachusetts to Porto Alegre. There are no popular flight routes from Massachusetts to Porto Alegre.
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Frequently asked questions about flying from Massachusetts to Porto Alegre

  • 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
Copa AirlinesPriceFrom $294Free CancellationRating
7.6
1,563 reviews
Search Copa Airlines flights
United AirlinesPriceFrom $334Free CancellationRating
7.4
10,085 reviews
Search United Airlines flights
GOLPriceFrom $622Free CancellationRating
7.3
1,272 reviews
Search GOL flights
DeltaPriceFrom $712Free CancellationRating
7.8
8,505 reviews
Search Delta flights
LATAM AirlinesPriceFrom $754Free CancellationRating
7.4
1,973 reviews
Search LATAM Airlines 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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