Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Massachusetts to Porto Alegre from $399

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 12/27. 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

Discover deals from 900+ travel sites with momondo.

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

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
6:15 pm - 4:10 pmBOS-POA
20h 55m2 stops
United Airlines Logo
5:10 pm - 10:38 amPOA-BOS
18h 28m2 stops
$548United Airlines
Find Deal
Tue, Oct 21 - Tue, Oct 28
LATAM Airlines Logo
7:00 am - 5:00 pmBOS-POA
33h 00m2 stops
LATAM Airlines Logo
4:45 am - 11:29 pmPOA-BOS
19h 44m2 stops
$581LATAM Airlines
Find Deal
Tue, Mar 24 - Thu, Mar 26
Copa Airlines Logo
8:41 am - 12:20 amBOS-POA
14h 39m1 stop
Copa Airlines Logo
1:30 am - 11:02 pmPOA-BOS
22h 32m1 stop
$678Copa Airlines
Find Deal
Tue, Oct 21 - Mon, Oct 27
Multiple Airlines Logo
8:55 am - 12:25 amBOS-POA
13h 30m1 stop
Multiple Airlines Logo
11:40 am - 7:35 amPOA-BOS
20h 55m2 stops
$692Multiple Airlines
Find Deal
Mon, Mar 2 - Fri, Mar 13
Multiple Airlines Logo
3:25 pm - 11:15 pmBOS-POA
29h 50m3 stops
Multiple Airlines Logo
5:30 am - 7:35 amPOA-BOS
27h 05m2 stops
$702Multiple Airlines
Find Deal
Mon, Mar 2 - Fri, Mar 13
Copa Airlines Logo
8:44 am - 12:25 amBOS-POA
14h 41m1 stop
Copa Airlines Logo
1:30 am - 11:10 pmPOA-BOS
22h 40m1 stop
$1,091Copa Airlines
Find Deal
Tue, Mar 24 - Wed, Mar 25
GOL Logo
6:19 pm - 11:45 pmBOS-POA
27h 26m2 stops
GOL Logo
5:20 pm - 9:56 amPOA-BOS
18h 36m2 stops
$1,996GOL
Find Deal
Sat, Dec 20 - Sat, Jan 3
Delta Logo
7:25 pm - 6:30 amBOS-POA
57h 05m2 stops
Delta Logo
6:00 pm - 11:39 pmPOA-BOS
31h 39m2 stops
$2,028Delta
Find Deal
Mon, Dec 22 - Fri, Jan 2
GOL Logo
6:19 pm - 11:45 pmBOS-POA
27h 26m2 stops
GOL Logo
5:10 am - 9:01 pmPOA-BOS
17h 51m2 stops
$2,140GOL
Find Deal
Sun, Dec 21 - Sun, Jan 4
Delta Logo
7:05 am - 6:30 amBOS-POA
21h 25m2 stops
Delta Logo
6:00 pm - 11:39 pmPOA-BOS
31h 39m2 stops
$2,441Delta
Find Deal
Fri, Dec 19 - Fri, Jan 2

LATAM Airlines flights from Massachusetts to Porto Alegre

Our best LATAM Airlines deals on Massachusetts to Porto Alegre flight tickets
LATAM Airlines
Mar 24
BOS7:00 amBoston Logan Intl
33h 00m
2 stops
POA5:00 pmPorto Alegre Salgado Filho
Mar 26
POA4:45 amPorto Alegre Salgado Filho
19h 44m
2 stops
BOS11:29 pmBoston Logan Intl
$581
Find similar
LATAM Airlines
Mar 24
BOS3:50 pmBoston Logan Intl
24h 10m
2 stops
POA5:00 pmPorto Alegre Salgado Filho
Mar 26
POA4:45 amPorto Alegre Salgado Filho
19h 44m
2 stops
BOS11:29 pmBoston Logan Intl
$582
Find similar
LATAM Airlines
Mar 24
BOS5:00 pmBoston Logan Intl
17h 35m
2 stops
POA11:35 amPorto Alegre Salgado Filho
Mar 26
POA2:55 pmPorto Alegre Salgado Filho
17h 40m
1 stop
BOS7:35 amBoston Logan Intl
$954
Find similar

Copa Airlines flights from Massachusetts to Porto Alegre

Our best Copa Airlines deals on Massachusetts to Porto Alegre flight tickets
Copa Airlines
Oct 21
BOS8:41 amBoston Logan Intl
14h 39m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Oct 27
POA1:30 amPorto Alegre Salgado Filho
22h 32m
1 stop
BOS11:02 pmBoston Logan Intl
$678
Find similar
Copa Airlines
Mar 24
BOS8:44 amBoston Logan Intl
14h 41m
1 stop
POA12:25 amPorto Alegre Salgado Filho
Mar 25
POA1:30 amPorto Alegre Salgado Filho
22h 40m
1 stop
BOS11:10 pmBoston Logan Intl
$1,091
Find similar
Copa Airlines
Mar 24
BOS8:44 amBoston Logan Intl
14h 41m
1 stop
POA12:25 amPorto Alegre Salgado Filho
Mar 25
POA1:30 amPorto Alegre Salgado Filho
22h 40m
1 stop
BOS11:10 pmBoston Logan Intl
$1,126
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 October 9, 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

Tue 10/21

6:15 pm-4:10 pm

2 stops20h 55m

Porto Alegre Salgado Filho

Tue 10/28

5:10 pm-10:38 am

2 stops18h 28m

$548

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 3/24

7:00 am-5:00 pm

2 stops33h 00m

Porto Alegre Salgado Filho

Thu 3/26

4:45 am-11:29 pm

2 stops19h 44m

$581

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 10/21

8:41 am-12:20 am

1 stop14h 39m

Porto Alegre Salgado Filho

Mon 10/27

1:30 am-11:02 pm

1 stop22h 32m

$678

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 3/2

8:55 am-12:25 am

1 stop13h 30m

Porto Alegre Salgado Filho

Fri 3/13

11:40 am-7:35 am

2 stops20h 55m

$692

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 3/2

3:25 pm-11:15 pm

3 stops29h 50m

Porto Alegre Salgado Filho

Fri 3/13

5:30 am-7:35 am

2 stops27h 05m

$702

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 3/24

8:44 am-12:25 am

1 stop14h 41m

Porto Alegre Salgado Filho

Wed 3/25

1:30 am-11:10 pm

1 stop22h 40m

$1,091

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sat 12/20

6:19 pm-11:45 pm

2 stops27h 26m

Porto Alegre Salgado Filho

Sat 1/3

5:20 pm-9:56 am

2 stops18h 36m

$1,996

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 12/22

7:25 pm-6:30 am

2 stops57h 05m

Porto Alegre Salgado Filho

Fri 1/2

6:00 pm-11:39 pm

2 stops31h 39m

$2,028

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 12/21

6:19 pm-11:45 pm

2 stops27h 26m

Porto Alegre Salgado Filho

Sun 1/4

5:10 am-9:01 pm

2 stops17h 51m

$2,140

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Fri 12/19

7:05 am-6:30 am

2 stops21h 25m

Porto Alegre Salgado Filho

Fri 1/2

6:00 pm-11:39 pm

2 stops31h 39m

$2,441

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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 $569.

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 $721 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 41% 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

Direct flights

None
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
DeltaPriceFrom $291Free CancellationRating
7.9
7,971 reviews
Search Delta flights
United AirlinesPriceFrom $334Free CancellationRating
7.4
8,966 reviews
Search United Airlines flights
Copa AirlinesPriceFrom $486Free CancellationRating
7.6
1,545 reviews
Search Copa Airlines flights
LATAM AirlinesPriceFrom $501Free CancellationRating
7.5
1,861 reviews
Search LATAM Airlines flights
American AirlinesPriceFrom $510Free CancellationRating
7.2
11,043 reviews
Search American Airlines flights
GOLPriceFrom $712Free CancellationRating
7.3
1,112 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.

An easier way to manage your Porto Alegre trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 11/8
Sat 11/15
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Brazil