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Cheap flights from Rhode Island to Porto Alegre from $554

This is the cheapest round-trip 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 11/16. 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
5:30 am - 4:20 pmBOS-POA
32h 50m2 stops
United Airlines Logo
3:25 pm - 10:34 amPOA-BOS
21h 09m2 stops
$554United Airlines
Find Deal
Sun, Nov 16 - Mon, Nov 24
LATAM Airlines Logo
3:50 pm - 5:00 pmBOS-POA
24h 10m2 stops
LATAM Airlines Logo
6:40 am - 11:29 pmPOA-BOS
17h 49m2 stops
$581LATAM Airlines
Find Deal
Tue, Mar 24 - Thu, Mar 26
LATAM Airlines Logo
3:50 pm - 5:00 pmBOS-POA
24h 10m2 stops
LATAM Airlines Logo
4:45 am - 11:29 pmPOA-BOS
19h 44m2 stops
$582LATAM Airlines
Find Deal
Tue, Mar 24 - Thu, Mar 26
Multiple Airlines Logo
1:10 pm - 5:55 pmBOS-POA
26h 45m2 stops
Multiple Airlines Logo
1:35 am - 10:03 pmPOA-BOS
22h 28m1 stop
$707Multiple Airlines
Find Deal
Sun, Nov 16 - Sun, Nov 23
Copa Airlines Logo
7:34 am - 12:30 amBOS-POA
14h 56m1 stop
Copa Airlines Logo
1:35 am - 10:03 pmPOA-BOS
22h 28m1 stop
$717Copa Airlines
Find Deal
Sun, Nov 16 - Sun, Nov 23
Copa Airlines Logo
7:34 am - 12:30 amBOS-POA
14h 56m1 stop
Copa Airlines Logo
1:35 am - 1:24 pmPOA-BOS
13h 49m1 stop
$737Copa Airlines
Find Deal
Sat, Dec 6 - Sat, Dec 13
Multiple Airlines Logo
12:59 pm - 6:20 pmBOS-POA
27h 21m3 stops
Multiple Airlines Logo
9:45 am - 6:35 amPOA-BOS
22h 50m2 stops
$741Multiple Airlines
Find Deal
Sun, Nov 16 - Mon, Nov 24
GOL Logo
6:19 pm - 11:45 pmBOS-POA
27h 26m2 stops
GOL Logo
5:20 pm - 2:04 pmPOA-BOS
22h 44m2 stops
$1,826GOL
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Sun, Dec 21 - Fri, Jan 9
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
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Sat, Dec 20 - Sat, Jan 3
Delta Logo
11:20 am - 6:30 amBOS-POA
17h 10m2 stops
Delta Logo
6:00 pm - 1:52 pmPOA-BOS
21h 52m2 stops
$3,030Delta
Find Deal
Fri, Dec 19 - Fri, Jan 2

LATAM Airlines flights from Rhode Island to Porto Alegre

Our best LATAM Airlines deals on Rhode Island to Porto Alegre flight tickets
LATAM Airlines
Mar 24
BOS3:50 pmBoston Logan Intl
24h 10m
2 stops
POA5:00 pmPorto Alegre Salgado Filho
Mar 26
POA6:40 amPorto Alegre Salgado Filho
17h 49m
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
Oct 11
BOS9:55 amBoston Logan Intl
13h 30m
1 stop
POA12:25 amPorto Alegre Salgado Filho
Oct 25
POA5:45 pmPorto Alegre Salgado Filho
14h 50m
1 stop
BOS7:35 amBoston Logan Intl
$756
Find similar

Copa Airlines flights from Rhode Island to Porto Alegre

Our best Copa Airlines deals on Rhode Island 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
Nov 16
BOS7:34 amBoston Logan Intl
14h 56m
1 stop
POA12:30 amPorto Alegre Salgado Filho
Nov 23
POA1:35 amPorto Alegre Salgado Filho
22h 28m
1 stop
BOS10:03 pmBoston Logan Intl
$717
Find similar
Copa Airlines
Dec 6
BOS7:34 amBoston Logan Intl
14h 56m
1 stop
POA12:30 amPorto Alegre Salgado Filho
Dec 13
POA1:35 amPorto Alegre Salgado Filho
13h 49m
1 stop
BOS1:24 pmBoston Logan Intl
$737
Find similar

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 October 8, 2025.
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 11/16

5:30 am-4:20 pm

2 stops32h 50m

Porto Alegre Salgado Filho

Mon 11/24

3:25 pm-10:34 am

2 stops21h 09m

$554

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 3/24

3:50 pm-5:00 pm

2 stops24h 10m

Porto Alegre Salgado Filho

Thu 3/26

6:40 am-11:29 pm

2 stops17h 49m

$581

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 3/24

3:50 pm-5:00 pm

2 stops24h 10m

Porto Alegre Salgado Filho

Thu 3/26

4:45 am-11:29 pm

2 stops19h 44m

$582

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 11/16

1:10 pm-5:55 pm

2 stops26h 45m

Porto Alegre Salgado Filho

Sun 11/23

1:35 am-10:03 pm

1 stop22h 28m

$707

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 11/16

7:34 am-12:30 am

1 stop14h 56m

Porto Alegre Salgado Filho

Sun 11/23

1:35 am-10:03 pm

1 stop22h 28m

$717

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sat 12/6

7:34 am-12:30 am

1 stop14h 56m

Porto Alegre Salgado Filho

Sat 12/13

1:35 am-1:24 pm

1 stop13h 49m

$737

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 11/16

12:59 pm-6:20 pm

3 stops27h 21m

Porto Alegre Salgado Filho

Mon 11/24

9:45 am-6:35 am

2 stops22h 50m

$741

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 12/21

6:19 pm-11:45 pm

2 stops27h 26m

Porto Alegre Salgado Filho

Fri 1/9

5:20 pm-2:04 pm

2 stops22h 44m

$1,826

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

Fri 12/19

11:20 am-6:30 am

2 stops17h 10m

Porto Alegre Salgado Filho

Fri 1/2

6:00 pm-1:52 pm

2 stops21h 52m

$3,030

Flights are sorted by cheapest round-trip flights 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 $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 Rhode Island 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 Rhode Island 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 Rhode Island 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 Rhode Island 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 Rhode Island for as low as $550 on momondo.

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

Direct flights

None
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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