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Cheap flights from Rhode Island to Porto Alegre from $398

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 8/11. 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
7:50 pm - 8:30 am
BOS
-
POA
34h 40m
2 stops
LATAM Airlines Logo
10:45 am - 6:45 am
POA
-
BOS
21h 00m
1 stop
$721LATAM Airlines
Tue, Nov 24 - Sat, Mar 20
LATAM Airlines Logo
10:15 am - 6:20 am
BOS
-
POA
19h 05m
2 stops
LATAM Airlines Logo
6:40 am - 11:23 pm
POA
-
BOS
17h 43m
2 stops
$724LATAM Airlines
Wed, Aug 19 - Mon, Oct 19
LATAM Airlines Logo
7:00 am - 4:50 pm
BOS
-
POA
31h 50m
2 stops
LATAM Airlines Logo
4:00 pm - 6:45 am
POA
-
BOS
15h 45m
1 stop
$769LATAM Airlines
Tue, Nov 24 - Sat, Mar 20
LATAM Airlines Logo
3:00 pm - 12:40 am
BOS
-
POA
32h 40m
2 stops
LATAM Airlines Logo
5:40 pm - 2:41 pm
POA
-
BOS
22h 01m
2 stops
$770LATAM Airlines
Wed, Oct 14 - Mon, Oct 26
LATAM Airlines Logo
5:00 pm - 4:50 pm
BOS
-
POA
21h 50m
2 stops
LATAM Airlines Logo
5:30 am - 11:23 pm
POA
-
BOS
18h 53m
2 stops
$779LATAM Airlines
Tue, Nov 24 - Sat, Mar 20
Avianca Logo
7:55 am - 10:40 am
BOS
-
POA
24h 45m
2 stops
Avianca Logo
2:00 pm - 6:35 am
POA
-
BOS
18h 35m
2 stops
$787Avianca
Tue, Nov 17 - Wed, Nov 18
LATAM Airlines Logo
3:50 pm - 4:50 pm
BOS
-
POA
23h 00m
2 stops
LATAM Airlines Logo
4:00 pm - 11:19 am
POA
-
BOS
20h 19m
2 stops
$790LATAM Airlines
Tue, Nov 24 - Sat, Mar 20
Multiple Airlines Logo
7:50 pm - 12:15 am
BOS
-
POA
26h 25m
2 stops
Multiple Airlines Logo
2:00 pm - 6:35 am
POA
-
BOS
18h 35m
2 stops
$831Multiple Airlines
Mon, Nov 30 - Mon, Dec 14
Multiple Airlines Logo
8:45 am - 12:15 am
BOS
-
POA
14h 30m
1 stop
Multiple Airlines Logo
1:15 am - 9:09 am
POA
-
BOS
32h 54m
2 stops
$866Multiple Airlines
Fri, Jul 17 - Sat, Jul 25
United Airlines Logo
2:42 pm - 2:35 pm
PVD
-
POA
22h 53m
2 stops
United Airlines Logo
5:10 pm - 3:35 pm
POA
-
PVD
23h 25m
2 stops
$1,681United Airlines
Wed, Aug 12 - Wed, Aug 19

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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
Nov 24
BOS7:50 pmBoston Logan Intl
34h 40m
2 stops
POA8:30 amPorto Alegre Salgado Filho
Mar 20
POA10:45 amPorto Alegre Salgado Filho
21h 00m
1 stop
BOS6:45 amBoston Logan Intl
$721
LATAM Airlines
Aug 19
BOS10:15 amBoston Logan Intl
19h 05m
2 stops
POA6:20 amPorto Alegre Salgado Filho
Oct 19
POA6:40 amPorto Alegre Salgado Filho
17h 43m
2 stops
BOS11:23 pmBoston Logan Intl
$724
LATAM Airlines
Nov 24
BOS7:00 amBoston Logan Intl
31h 50m
2 stops
POA4:50 pmPorto Alegre Salgado Filho
Mar 20
POA4:00 pmPorto Alegre Salgado Filho
15h 45m
1 stop
BOS6:45 amBoston Logan Intl
$769

United Airlines flights from Rhode Island to Porto Alegre

Our best United Airlines deals on Rhode Island to Porto Alegre flight tickets
United Airlines
Jul 2
BOS10:58 amBoston Logan Intl
28h 52m
2 stops
POA4:50 pmPorto Alegre Salgado Filho
Jul 24
POA3:30 pmPorto Alegre Salgado Filho
28h 44m
2 stops
BOS7:14 pmBoston Logan Intl
$925
United Airlines
Jul 1
BOS6:43 pmBoston Logan Intl
19h 57m
2 stops
POA3:40 pmPorto Alegre Salgado Filho
Jul 24
POA3:30 pmPorto Alegre Salgado Filho
33h 29m
2 stops
BOS11:59 pmBoston Logan Intl
$987
United Airlines
Aug 12
PVD2:42 pmProvidence-TFGreen
22h 53m
2 stops
POA2:35 pmPorto Alegre Salgado Filho
Aug 19
POA5:10 pmPorto Alegre Salgado Filho
23h 25m
2 stops
PVD3:35 pmProvidence-TFGreen
$1,681

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 June 28, 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 - POA

BOSPOA

Boston Logan Intl

Tue 11/24

7:50 pm-8:30 am

2 stops34h 40m

Porto Alegre Salgado Filho

Sat 3/20

10:45 am-6:45 am

1 stop21h 00m

$721
Quickest round-trip

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Wed 8/19

10:15 am-6:20 am

2 stops19h 05m

Porto Alegre Salgado Filho

Mon 10/19

6:40 am-11:23 pm

2 stops17h 43m

$724

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 11/24

7:00 am-4:50 pm

2 stops31h 50m

Porto Alegre Salgado Filho

Sat 3/20

4:00 pm-6:45 am

1 stop15h 45m

$769

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Wed 10/14

3:00 pm-12:40 am

2 stops32h 40m

Porto Alegre Salgado Filho

Mon 10/26

5:40 pm-2:41 pm

2 stops22h 01m

$770

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 11/24

5:00 pm-4:50 pm

2 stops21h 50m

Porto Alegre Salgado Filho

Sat 3/20

5:30 am-11:23 pm

2 stops18h 53m

$779

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 11/17

7:55 am-10:40 am

2 stops24h 45m

Porto Alegre Salgado Filho

Wed 11/18

2:00 pm-6:35 am

2 stops18h 35m

$787

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 11/24

3:50 pm-4:50 pm

2 stops23h 00m

Porto Alegre Salgado Filho

Sat 3/20

4:00 pm-11:19 am

2 stops20h 19m

$790

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 11/30

7:50 pm-12:15 am

2 stops26h 25m

Porto Alegre Salgado Filho

Mon 12/14

2:00 pm-6:35 am

2 stops18h 35m

$831

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Fri 7/17

8:45 am-12:15 am

1 stop14h 30m

Porto Alegre Salgado Filho

Sat 7/25

1:15 am-9:09 am

2 stops32h 54m

$866

ProvidencePorto Alegre

PVD - POA

PVDPOA

Providence-TFGreen

Wed 8/12

2:42 pm-2:35 pm

2 stops22h 53m

Porto Alegre Salgado Filho

Wed 8/19

5:10 pm-3:35 pm

2 stops23h 25m

$1,681

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 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?

LATAM Airlines and GOL 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

Fastest flight time

17h 45m

Direct flights

None
The fastest flight from Rhode Island to Porto Alegre takes 17h 45m
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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