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Cheap flights from Rhode Island to Porto Alegre from $425

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Rhode Island to Porto Alegre departing on 9/9. 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
Travel Warning: Due to flooding, the airport may be currently closed. Check local travel advisories before booking.

Find the cheapest flights from Rhode Island to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
3:05 pm - 2:15 pmBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
22h 10m2 stops Miami Sao Paulo Guarulhos Intl
LATAM Airlines Logo
5:45 pm - 7:35 amPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
14h 50m1 stop Sao Paulo Guarulhos Intl
$791LATAM Airlines
Tue, Sep 15 - Tue, Sep 22
LATAM Airlines Logo
9:10 am - 2:15 pmBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
27h 05m2 stops New York John F Kennedy Intl Rio de Janeiro–Galeão Intl
LATAM Airlines Logo
3:00 pm - 6:45 amPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
17h 45m2 stops Rio de Janeiro–Galeão Intl Sao Paulo Guarulhos Intl
$792LATAM Airlines
Wed, Dec 2 - Fri, Dec 11
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 - 11:02 pmPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
22h 42m1 stop Panama City Tocumen Intl
$830Copa Airlines
Tue, Sep 15 - Mon, Sep 21
Copa Airlines Logo
3:55 pm - 12:20 amBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
31h 25m1 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
$855Copa Airlines
Wed, Sep 30 - Tue, Oct 6
Multiple Airlines Logo
8:45 am - 10:50 amBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
25h 05m2 stops Bogotá El Dorado Sao Paulo Guarulhos Intl
Multiple Airlines Logo
5:05 am - 9:05 amPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
29h 00m3 stops Sao Paulo Guarulhos Intl Punta Cana Toronto Pearson Intl
$897Multiple Airlines
Tue, Sep 15 - Tue, Sep 22
GOL Logo
2:29 pm - 3:00 pmBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
22h 31m2 stops Dallas/Fort Worth Sao Paulo Guarulhos Intl
GOL Logo
6:40 pm - 10:44 amPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
18h 04m2 stops Rio de Janeiro–Galeão Intl New York John F Kennedy Intl
$951GOL
Wed, Dec 2 - Fri, Dec 11
Delta Logo
7:05 am - 6:40 amBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
21h 35m2 stops Miami Lima J Chavez Intl
Delta Logo
6:00 pm - 6:45 amPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
14h 45m1 stop Sao Paulo Guarulhos Intl
$1,009Delta
Wed, Dec 2 - Fri, Dec 11
Multiple Airlines Logo
10:00 am - 4:55 pmBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
29h 55m2 stops Sao Paulo Guarulhos Intl Brasilia
Multiple Airlines Logo
11:30 am - 1:40 pmPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
27h 10m3 stops Sao Paulo Guarulhos Intl Bogotá El Dorado Toronto Pearson Intl
$1,101Multiple Airlines
Fri, Sep 11 - Fri, Sep 25
GOL Logo
2:19 pm - 2:40 pmBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
22h 21m2 stops Dallas/Fort Worth Sao Paulo Guarulhos Intl
GOL Logo
5:30 pm - 11:05 pmPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
31h 35m2 stops Brasilia Miami
$1,580GOL
Fri, Dec 25 - Mon, Jan 11
Delta Logo
12:50 pm - 6:40 amPVD  Providence-TFGreen-POA Porto Alegre Salgado Filho
39h 50m2 stops Atlanta Hartsfield-Jackson Lima J Chavez Intl
Delta Logo
7:30 am - 11:43 pmPOA  Porto Alegre Salgado Filho-PVD Providence-TFGreen
18h 13m2 stops Lima J Chavez Intl Atlanta Hartsfield-Jackson
$1,722Delta
Sun, Dec 20 - Thu, Dec 31

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LATAM Airlines flights from Rhode Island to Porto Alegre

Our best LATAM Airlines deals on Rhode Island to Porto Alegre flight tickets
LATAM Airlines
Sep 15
BOS3:05 pmBoston Logan Intl
22h 10m
2 stops
POA2:15 pmPorto Alegre Salgado Filho
Sep 22
POA5:45 pmPorto Alegre Salgado Filho
14h 50m
1 stop
BOS7:35 amBoston Logan Intl
$791
LATAM Airlines
Dec 2
BOS9:10 amBoston Logan Intl
27h 05m
2 stops
POA2:15 pmPorto Alegre Salgado Filho
Dec 11
POA6:00 pmPorto Alegre Salgado Filho
14h 45m
1 stop
BOS6:45 amBoston Logan Intl
$792
LATAM Airlines
Nov 24
BOS7:05 amBoston Logan Intl
31h 45m
2 stops
POA4:50 pmPorto Alegre Salgado Filho
Mar 20
POA5:25 amPorto Alegre Salgado Filho
26h 20m
1 stop
BOS6:45 amBoston Logan Intl
$795

GOL flights from Rhode Island to Porto Alegre

Our best GOL deals on Rhode Island to Porto Alegre flight tickets
GOL
Dec 2
BOS2:29 pmBoston Logan Intl
22h 31m
2 stops
POA3:00 pmPorto Alegre Salgado Filho
Dec 11
POA6:40 pmPorto Alegre Salgado Filho
18h 04m
2 stops
BOS10:44 amBoston Logan Intl
$951
GOL
Dec 25
BOS2:19 pmBoston Logan Intl
22h 21m
2 stops
POA2:40 pmPorto Alegre Salgado Filho
Jan 11
POA5:30 pmPorto Alegre Salgado Filho
31h 35m
2 stops
BOS11:05 pmBoston Logan Intl
$1,580
GOL
Sep 11
BOS11:05 amBoston Logan Intl
22h 35m
2 stops
POA10:40 amPorto Alegre Salgado Filho
Sep 25
POA3:05 pmPorto Alegre Salgado Filho
20h 09m
2 stops
BOS10:14 amBoston Logan Intl
$2,004

momondo Fare Finder

 
Customize your flight search to find flights from Rhode Island 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 18, 2026.
Use the filters below to find and compare flights from Rhode Island 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

Tue 9/15

3:05 pm-2:15 pm

2 stops22h 10m

Porto Alegre Salgado Filho

Tue 9/22

5:45 pm-7:35 am

1 stop14h 50m

$791

BostonPorto Alegre

BOS Boston Logan Intl - POA Porto Alegre Salgado Filho

BOSPOA

Boston Logan Intl

Wed 12/2

9:10 am-2:15 pm

2 stops27h 05m

Porto Alegre Salgado Filho

Fri 12/11

3:00 pm-6:45 am

2 stops17h 45m

$792

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

Mon 9/21

1:20 am-11:02 pm

1 stop22h 42m

$830

BostonPorto Alegre

BOS Boston Logan Intl - POA Porto Alegre Salgado Filho

BOSPOA

Boston Logan Intl

Wed 9/30

3:55 pm-12:20 am

1 stop31h 25m

Porto Alegre Salgado Filho

Tue 10/6

1:20 am-2:29 pm

1 stop14h 09m

$855

BostonPorto Alegre

BOS Boston Logan Intl - POA Porto Alegre Salgado Filho

BOSPOA

Boston Logan Intl

Tue 9/15

8:45 am-10:50 am

2 stops25h 05m

Porto Alegre Salgado Filho

Tue 9/22

5:05 am-9:05 am

3 stops29h 00m

$897

BostonPorto Alegre

BOS Boston Logan Intl - POA Porto Alegre Salgado Filho

BOSPOA

Boston Logan Intl

Wed 12/2

2:29 pm-3:00 pm

2 stops22h 31m

Porto Alegre Salgado Filho

Fri 12/11

6:40 pm-10:44 am

2 stops18h 04m

$951
Quickest round-trip

BostonPorto Alegre

BOS Boston Logan Intl - POA Porto Alegre Salgado Filho

BOSPOA

Boston Logan Intl

Wed 12/2

7:05 am-6:40 am

2 stops21h 35m

Porto Alegre Salgado Filho

Fri 12/11

6:00 pm-6:45 am

1 stop14h 45m

$1,009

BostonPorto Alegre

BOS Boston Logan Intl - POA Porto Alegre Salgado Filho

BOSPOA

Boston Logan Intl

Fri 9/11

10:00 am-4:55 pm

2 stops29h 55m

Porto Alegre Salgado Filho

Fri 9/25

11:30 am-1:40 pm

3 stops27h 10m

$1,101

BostonPorto Alegre

BOS Boston Logan Intl - POA Porto Alegre Salgado Filho

BOSPOA

Boston Logan Intl

Fri 12/25

2:19 pm-2:40 pm

2 stops22h 21m

Porto Alegre Salgado Filho

Mon 1/11

5:30 pm-11:05 pm

2 stops31h 35m

$1,580

ProvidencePorto Alegre

PVD Providence-TFGreen - POA Porto Alegre Salgado Filho

PVDPOA

Providence-TFGreen

Sun 12/20

12:50 pm-6:40 am

2 stops39h 50m

Porto Alegre Salgado Filho

Thu 12/31

7:30 am-11:43 pm

2 stops18h 13m

$1,722

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Porto Alegre from

How to get the cheapest flight ticket from Rhode Island 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 airline that flies from Rhode Island to Porto Alegre Salgado Filho?

Copa Airlines and LATAM Airlines are the most popular carriers operating from Rhode Island to Porto Alegre Salgado Filho

Cheap Rhode Island to Porto Alegre flight deals and tips

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

Best Price Found

$425

Fastest flight time

19h 50m

Direct flights

None
The best one-way flight to Porto Alegre from Rhode Island in the past 72 hours is $425. The best round-trip flight deal from Rhode Island to Porto Alegre found on momondo in the last 72 hours is $791.
The fastest flight from Rhode Island to Porto Alegre takes 19h 50m
There are no direct flights from Rhode Island to Porto Alegre. There are no popular flight routes from Rhode Island to Porto Alegre.
Search flight deals

Frequently asked questions about flying from Rhode Island to Porto Alegre

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

    Prices for flights from Rhode Island to Porto Alegre Salgado Filho Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Rhode Island to Porto Alegre Salgado Filho Airport.

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

    The travel and health documents you'll need for your trip to Porto Alegre Salgado Filho Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Porto Alegre Salgado Filho Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Rhode Island to Porto Alegre. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for Rhode Island to Porto Alegre flights to just show those with flexible booking policies.

How can momondo help me find flights from Rhode Island 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 Rhode Island.

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

Yes. momondo can track prices for Rhode Island to Porto Alegre flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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