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Cheap flights from Rhode Island to Porto Alegre from $301

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 3/25. 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
Travel Warning: Due to flooding, the airport may be currently closed. Check local travel advisories before booking.

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Find the cheapest flights from Rhode Island to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:16 am - 2:25 pm
BOS
-
POA
30h 09m
2 stops
United Airlines Logo
3:30 pm - 7:42 pm
POA
-
BOS
29h 12m
2 stops
$646United Airlines
Tue, Mar 17 - Thu, Mar 19
United Airlines Logo
12:10 pm - 2:25 pm
BOS
-
POA
25h 15m
2 stops
United Airlines Logo
3:30 pm - 11:57 pm
POA
-
BOS
33h 27m
2 stops
$707United Airlines
Tue, Mar 17 - Thu, Mar 19
United Airlines Logo
12:07 pm - 2:25 pm
BOS
-
POA
25h 18m
3 stops
United Airlines Logo
3:30 pm - 11:57 pm
POA
-
BOS
33h 27m
2 stops
$708United Airlines
Tue, Mar 17 - Thu, Mar 19
LATAM Airlines Logo
9:55 am - 12:50 am
BOS
-
POA
13h 55m
1 stop
LATAM Airlines Logo
7:25 am - 10:21 am
POA
-
BOS
27h 56m
2 stops
$724LATAM Airlines
Fri, Apr 10 - Mon, Apr 27
LATAM Airlines Logo
12:45 pm - 12:15 pm
BOS
-
POA
22h 30m
2 stops
LATAM Airlines Logo
5:50 pm - 3:28 pm
POA
-
BOS
22h 38m
2 stops
$731LATAM Airlines
Fri, Apr 10 - Mon, Apr 27
United Airlines Logo
12:07 pm - 2:25 pm
BOS
-
POA
25h 18m
3 stops
United Airlines Logo
3:30 pm - 7:42 pm
POA
-
BOS
29h 12m
2 stops
$778United Airlines
Tue, Mar 17 - Thu, Mar 19
Multiple Airlines Logo
9:55 am - 11:00 am
BOS
-
POA
24h 05m
2 stops
Multiple Airlines Logo
11:00 am - 11:18 pm
POA
-
BOS
37h 18m
3 stops
$819Multiple Airlines
Fri, Apr 10 - Mon, Apr 27
LATAM Airlines Logo
9:55 am - 8:50 am
BOS
-
POA
21h 55m
1 stop
LATAM Airlines Logo
9:55 pm - 7:35 am
POA
-
BOS
34h 40m
1 stop
$866LATAM Airlines
Fri, Apr 10 - Mon, Apr 27
Copa Airlines Logo
8:43 am - 12:20 am
BOS
-
POA
14h 37m
1 stop
Copa Airlines Logo
1:35 am - 2:31 pm
POA
-
BOS
13h 56m
1 stop
$885Copa Airlines
Sun, Apr 12 - Sat, Apr 18
Multiple Airlines Logo
9:55 am - 12:20 am
BOS
-
POA
13h 25m
1 stop
Multiple Airlines Logo
1:35 am - 10:05 am
POA
-
BOS
33h 30m
2 stops
$952Multiple Airlines
Fri, Apr 10 - Thu, Apr 16

United Airlines flights from Rhode Island to Porto Alegre

Our best United Airlines deals on Rhode Island to Porto Alegre flight tickets
United Airlines
Mar 10
BOS7:34 pmBoston Logan Intl
19h 51m
2 stops
POA4:25 pmPorto Alegre Salgado Filho
Mar 17
POA3:25 pmPorto Alegre Salgado Filho
24h 04m
2 stops
BOS2:29 pmBoston Logan Intl
$591
United Airlines
Mar 17
BOS7:16 amBoston Logan Intl
30h 09m
2 stops
POA2:25 pmPorto Alegre Salgado Filho
Mar 19
POA3:30 pmPorto Alegre Salgado Filho
29h 12m
2 stops
BOS7:42 pmBoston Logan Intl
$646
United Airlines
Mar 17
BOS12:10 pmBoston Logan Intl
25h 15m
2 stops
POA2:25 pmPorto Alegre Salgado Filho
Mar 19
POA3:30 pmPorto Alegre Salgado Filho
33h 27m
2 stops
BOS11:57 pmBoston Logan Intl
$707

LATAM Airlines flights from Rhode Island to Porto Alegre

Our best LATAM Airlines deals on Rhode Island to Porto Alegre flight tickets
LATAM Airlines
Apr 10
BOS9:55 amBoston Logan Intl
13h 55m
1 stop
POA12:50 amPorto Alegre Salgado Filho
Apr 27
POA7:25 amPorto Alegre Salgado Filho
27h 56m
2 stops
BOS10:21 amBoston Logan Intl
$724
LATAM Airlines
Apr 10
BOS12:45 pmBoston Logan Intl
22h 30m
2 stops
POA12:15 pmPorto Alegre Salgado Filho
Apr 27
POA5:50 pmPorto Alegre Salgado Filho
22h 38m
2 stops
BOS3:28 pmBoston Logan Intl
$731
LATAM Airlines
Apr 10
BOS9:55 amBoston Logan Intl
21h 55m
1 stop
POA8:50 amPorto Alegre Salgado Filho
Apr 27
POA9:55 pmPorto Alegre Salgado Filho
34h 40m
1 stop
BOS7:35 amBoston Logan Intl
$866

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 February 27, 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

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 3/17

7:16 am-2:25 pm

2 stops30h 09m

Porto Alegre Salgado Filho

Thu 3/19

3:30 pm-7:42 pm

2 stops29h 12m

$646

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 3/17

12:10 pm-2:25 pm

2 stops25h 15m

Porto Alegre Salgado Filho

Thu 3/19

3:30 pm-11:57 pm

2 stops33h 27m

$707

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 3/17

12:07 pm-2:25 pm

3 stops25h 18m

Porto Alegre Salgado Filho

Thu 3/19

3:30 pm-11:57 pm

2 stops33h 27m

$708

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Fri 4/10

9:55 am-12:50 am

1 stop13h 55m

Porto Alegre Salgado Filho

Mon 4/27

7:25 am-10:21 am

2 stops27h 56m

$724

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Fri 4/10

12:45 pm-12:15 pm

2 stops22h 30m

Porto Alegre Salgado Filho

Mon 4/27

5:50 pm-3:28 pm

2 stops22h 38m

$731

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 3/17

12:07 pm-2:25 pm

3 stops25h 18m

Porto Alegre Salgado Filho

Thu 3/19

3:30 pm-7:42 pm

2 stops29h 12m

$778

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Fri 4/10

9:55 am-11:00 am

2 stops24h 05m

Porto Alegre Salgado Filho

Mon 4/27

11:00 am-11:18 pm

3 stops37h 18m

$819

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Fri 4/10

9:55 am-8:50 am

1 stop21h 55m

Porto Alegre Salgado Filho

Mon 4/27

9:55 pm-7:35 am

1 stop34h 40m

$866

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 4/12

8:43 am-12:20 am

1 stop14h 37m

Porto Alegre Salgado Filho

Sat 4/18

1:35 am-2:31 pm

1 stop13h 56m

$885

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Fri 4/10

9:55 am-12:20 am

1 stop13h 25m

Porto Alegre Salgado Filho

Thu 4/16

1:35 am-10:05 am

2 stops33h 30m

$952

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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 month to fly to Porto Alegre?

The cheapest month to fly to Porto Alegre from Rhode Island 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 Rhode Island to Porto Alegre during May average around $574.

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

13h 25m

Direct flights

None
The fastest flight from Rhode Island to Porto Alegre takes 13h 25m
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

  • 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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