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Cheap flights from Rhode Island to Porto Alegre from $329

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 10/14. 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

Copa Airlines Logo
8:41 am - 12:20 amBOS-POA
14h 39m1 stop
Copa Airlines Logo
1:30 am - 11:02 pmPOA-BOS
22h 32m1 stop
$655Copa Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 29
Logo
9:00 am - 10:45 amBOS-POA
24h 45m2 stops
Logo
8:55 pm - 7:15 amPOA-BOS
35h 20m2 stops
$661
Find Deal
Tue, Sep 16 - Tue, Sep 23
Logo
9:00 am - 8:45 amBOS-POA
22h 45m2 stops
Logo
11:25 am - 2:55 pmPOA-BOS
28h 30m3 stops
$673
Find Deal
Tue, Sep 16 - Tue, Sep 23
Copa Airlines Logo
8:41 am - 12:20 amBOS-POA
14h 39m1 stop
Copa Airlines Logo
1:25 am - 7:22 pmPOA-BOS
18h 57m1 stop
$675Copa Airlines
Find Deal
Thu, Sep 18 - Fri, Sep 26
GOL Logo
4:30 pm - 11:35 amBOS-POA
18h 05m2 stops
GOL Logo
5:20 am - 12:34 amPOA-BOS
20h 14m2 stops
$726GOL
Find Deal
Tue, Oct 7 - Mon, Oct 20
GOL Logo
4:30 pm - 11:30 amBOS-POA
18h 00m2 stops
GOL Logo
5:10 am - 12:34 amPOA-BOS
20h 24m2 stops
$727GOL
Find Deal
Wed, Oct 15 - Thu, Oct 30
LATAM Airlines Logo
7:15 am - 7:50 pmBOS-POA
35h 35m2 stops
LATAM Airlines Logo
8:00 pm - 11:59 pmPOA-BOS
28h 59m2 stops
$950LATAM Airlines
Find Deal
Fri, Aug 22 - Mon, Aug 25
LATAM Airlines Logo
3:50 pm - 5:00 pmBOS-POA
23h 10m2 stops
LATAM Airlines Logo
7:45 am - 12:59 amPOA-BOS
19h 14m2 stops
$957LATAM Airlines
Find Deal
Sun, Dec 14 - Wed, Jan 14
Delta Logo
7:00 am - 6:30 amBOS-POA
21h 30m2 stops
Delta Logo
7:45 am - 12:59 amPOA-BOS
19h 14m2 stops
$1,065Delta
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Tue, Dec 16 - Thu, Jan 15
Delta Logo
7:25 pm - 1:05 amBOS-POA
27h 40m2 stops
Delta Logo
7:45 am - 12:59 amPOA-BOS
19h 14m2 stops
$1,071Delta
Find Deal
Mon, Dec 15 - Thu, Jan 15

LATAM Airlines flights from Rhode Island to Porto Alegre

Our best LATAM Airlines deals on Rhode Island to Porto Alegre flight tickets
LATAM Airlines
Aug 22
BOS7:15 amBoston Logan Intl
35h 35m
2 stops
POA7:50 pmPorto Alegre Salgado Filho
Aug 25
POA8:00 pmPorto Alegre Salgado Filho
28h 59m
2 stops
BOS11:59 pmBoston Logan Intl
$950
Find similar
LATAM Airlines
Dec 14
BOS3:50 pmBoston Logan Intl
23h 10m
2 stops
POA5:00 pmPorto Alegre Salgado Filho
Jan 14
POA7:45 amPorto Alegre Salgado Filho
19h 14m
2 stops
BOS12:59 amBoston Logan Intl
$957
Find similar
LATAM Airlines
Sep 18
BOS3:24 pmBoston Logan Intl
16h 56m
2 stops
POA9:20 amPorto Alegre Salgado Filho
Sep 27
POA8:55 pmPorto Alegre Salgado Filho
27h 31m
2 stops
BOS11:26 pmBoston Logan Intl
$963
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 15
BOS8:41 amBoston Logan Intl
14h 39m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Oct 29
POA1:30 amPorto Alegre Salgado Filho
22h 32m
1 stop
BOS11:02 pmBoston Logan Intl
$655
Find similar
Copa Airlines
Sep 18
BOS8:41 amBoston Logan Intl
14h 39m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Sep 26
POA1:25 amPorto Alegre Salgado Filho
18h 57m
1 stop
BOS7:22 pmBoston Logan Intl
$675
Find similar
Copa Airlines
Oct 15
BOS8:41 amBoston Logan Intl
14h 39m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Oct 29
POA1:30 amPorto Alegre Salgado Filho
22h 32m
1 stop
BOS11:02 pmBoston Logan Intl
$694
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 August 7, 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

Wed 10/15

8:41 am-12:20 am

1 stop14h 39m

Porto Alegre Salgado Filho

Wed 10/29

1:30 am-11:02 pm

1 stop22h 32m

$655

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 9/16

9:00 am-10:45 am

2 stops24h 45m

Porto Alegre Salgado Filho

Tue 9/23

8:55 pm-7:15 am

2 stops35h 20m

$661

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 9/16

9:00 am-8:45 am

2 stops22h 45m

Porto Alegre Salgado Filho

Tue 9/23

11:25 am-2:55 pm

3 stops28h 30m

$673

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Thu 9/18

8:41 am-12:20 am

1 stop14h 39m

Porto Alegre Salgado Filho

Fri 9/26

1:25 am-7:22 pm

1 stop18h 57m

$675

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 10/7

4:30 pm-11:35 am

2 stops18h 05m

Porto Alegre Salgado Filho

Mon 10/20

5:20 am-12:34 am

2 stops20h 14m

$726

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Wed 10/15

4:30 pm-11:30 am

2 stops18h 00m

Porto Alegre Salgado Filho

Thu 10/30

5:10 am-12:34 am

2 stops20h 24m

$727

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Fri 8/22

7:15 am-7:50 pm

2 stops35h 35m

Porto Alegre Salgado Filho

Mon 8/25

8:00 pm-11:59 pm

2 stops28h 59m

$950

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 12/14

3:50 pm-5:00 pm

2 stops23h 10m

Porto Alegre Salgado Filho

Wed 1/14

7:45 am-12:59 am

2 stops19h 14m

$957

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 12/16

7:00 am-6:30 am

2 stops21h 30m

Porto Alegre Salgado Filho

Thu 1/15

7:45 am-12:59 am

2 stops19h 14m

$1,065

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 12/15

7:25 pm-1:05 am

2 stops27h 40m

Porto Alegre Salgado Filho

Thu 1/15

7:45 am-12:59 am

2 stops19h 14m

$1,071

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 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 September is your next best option. Flight prices from Rhode Island to Porto Alegre during September average around $541.

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.

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

$329

Fastest flight time

13h 30m

Direct flights

None

Airports in Porto Alegre

1 airport
The best one-way flight to Porto Alegre from Rhode Island in the past 72 hours is $329. The best round-trip flight deal from Rhode Island to Porto Alegre found on momondo in the last 72 hours is $655.
The fastest flight from Rhode Island to Porto Alegre takes 13h 30m
There are no direct flights from Rhode Island to Porto Alegre. Popular non-direct routes for this connection are Boston Logan Intl Airport - Porto Alegre Salgado Filho Airport and Providence-TFGreen Airport - Porto Alegre Salgado Filho Airport.
There is 1 airport near Porto Alegre: Porto Alegre Salgado Filho (POA)
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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