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Cheap flights from Rhode Island to Porto Alegre from $448

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 1/31. 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
9:45 am - 4:25 pm
BOS
-
POA
28h 40m
2 stops
United Airlines Logo
3:25 pm - 12:49 pm
POA
-
BOS
23h 24m
2 stops
$470United Airlines
Sun, Mar 1 - Wed, Mar 4
United Airlines Logo
9:45 am - 4:25 pm
BOS
-
POA
28h 40m
2 stops
United Airlines Logo
3:25 pm - 9:43 pm
POA
-
BOS
32h 18m
2 stops
$477United Airlines
Sun, Mar 1 - Fri, Mar 6
United Airlines Logo
5:45 am - 2:45 pm
BOS
-
POA
31h 00m
2 stops
United Airlines Logo
2:05 pm - 11:57 pm
POA
-
BOS
34h 52m
2 stops
$576United Airlines
Sun, Feb 1 - Thu, Mar 12
United Airlines Logo
7:19 pm - 2:10 pm
BOS
-
POA
16h 51m
2 stops
United Airlines Logo
5:10 pm - 2:31 pm
POA
-
BOS
22h 21m
2 stops
$585United Airlines
Mon, Mar 2 - Mon, Mar 9
Copa Airlines Logo
8:43 am - 12:20 am
BOS
-
POA
14h 37m
1 stop
Copa Airlines Logo
1:20 am - 11:08 pm
POA
-
BOS
22h 48m
1 stop
$622Copa Airlines
Thu, Apr 30 - Sun, May 17
Multiple Airlines Logo
3:05 pm - 12:25 am
BOS
-
POA
31h 20m
1 stop
Multiple Airlines Logo
7:55 pm - 7:35 am
POA
-
BOS
36h 40m
2 stops
$664Multiple Airlines
Mon, Mar 2 - Tue, Mar 10
Multiple Airlines Logo
8:43 am - 12:20 am
BOS
-
POA
14h 37m
1 stop
Multiple Airlines Logo
10:05 am - 7:15 am
POA
-
BOS
22h 10m
2 stops
$666Multiple Airlines
Thu, Apr 30 - Mon, May 18
Multiple Airlines Logo
3:05 pm - 12:25 am
BOS
-
POA
31h 20m
1 stop
Multiple Airlines Logo
10:35 am - 7:35 am
POA
-
BOS
22h 00m
2 stops
$669Multiple Airlines
Mon, Mar 2 - Mon, Mar 9
Copa Airlines Logo
3:05 pm - 12:25 am
BOS
-
POA
31h 20m
1 stop
Copa Airlines Logo
1:30 am - 10:10 pm
POA
-
BOS
22h 40m
1 stop
$672Copa Airlines
Mon, Mar 2 - Wed, Mar 4
United Airlines Logo
5:45 am - 6:20 pm
BOS
-
POA
34h 35m
2 stops
United Airlines Logo
5:10 pm - 11:10 am
POA
-
BOS
19h 00m
2 stops
$691United Airlines
Sun, Feb 1 - Tue, Mar 10

Avianca flights from Rhode Island to Porto Alegre

Our best Avianca deals on Rhode Island to Porto Alegre flight tickets
Avianca
Feb 3
BOS7:55 amBoston Logan Intl
25h 05m
2 stops
POA11:00 amPorto Alegre Salgado Filho
Mar 10
POA5:55 pmPorto Alegre Salgado Filho
38h 40m
2 stops
BOS7:35 amBoston Logan Intl
$831
Avianca
Feb 3
BOS7:55 amBoston Logan Intl
25h 05m
2 stops
POA11:00 amPorto Alegre Salgado Filho
Mar 11
POA1:40 pmPorto Alegre Salgado Filho
18h 55m
2 stops
BOS7:35 amBoston Logan Intl
$861

Air Canada flights from Rhode Island to Porto Alegre

Our best Air Canada deals on Rhode Island to Porto Alegre flight tickets
Air Canada
Jan 30
BOS5:30 amBoston Logan Intl
32h 10m
2 stops
POA3:40 pmPorto Alegre Salgado Filho
Mar 11
POA5:10 pmPorto Alegre Salgado Filho
17h 22m
2 stops
BOS9:32 amBoston Logan Intl
$832
Air Canada
Mar 1
BOS6:15 amBoston Logan Intl
32h 15m
2 stops
POA4:30 pmPorto Alegre Salgado Filho
Mar 10
POA3:25 pmPorto Alegre Salgado Filho
21h 47m
2 stops
BOS12:12 pmBoston Logan Intl
$921

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 January 12, 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

Sun 3/1

9:45 am-4:25 pm

2 stops28h 40m

Porto Alegre Salgado Filho

Wed 3/4

3:25 pm-12:49 pm

2 stops23h 24m

$470

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 3/1

9:45 am-4:25 pm

2 stops28h 40m

Porto Alegre Salgado Filho

Fri 3/6

3:25 pm-9:43 pm

2 stops32h 18m

$477

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 2/1

5:45 am-2:45 pm

2 stops31h 00m

Porto Alegre Salgado Filho

Thu 3/12

2:05 pm-11:57 pm

2 stops34h 52m

$576

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 3/2

7:19 pm-2:10 pm

2 stops16h 51m

Porto Alegre Salgado Filho

Mon 3/9

5:10 pm-2:31 pm

2 stops22h 21m

$585

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Thu 4/30

8:43 am-12:20 am

1 stop14h 37m

Porto Alegre Salgado Filho

Sun 5/17

1:20 am-11:08 pm

1 stop22h 48m

$622

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 3/2

3:05 pm-12:25 am

1 stop31h 20m

Porto Alegre Salgado Filho

Tue 3/10

7:55 pm-7:35 am

2 stops36h 40m

$664

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Thu 4/30

8:43 am-12:20 am

1 stop14h 37m

Porto Alegre Salgado Filho

Mon 5/18

10:05 am-7:15 am

2 stops22h 10m

$666

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 3/2

3:05 pm-12:25 am

1 stop31h 20m

Porto Alegre Salgado Filho

Mon 3/9

10:35 am-7:35 am

2 stops22h 00m

$669

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 3/2

3:05 pm-12:25 am

1 stop31h 20m

Porto Alegre Salgado Filho

Wed 3/4

1:30 am-10:10 pm

1 stop22h 40m

$672

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 2/1

5:45 am-6:20 pm

2 stops34h 35m

Porto Alegre Salgado Filho

Tue 3/10

5:10 pm-11:10 am

2 stops19h 00m

$691

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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

14h 25m

Direct flights

None
The fastest flight from Rhode Island to Porto Alegre takes 14h 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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