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Cheap flights from Rhode Island to Porto Alegre from $292

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 11/28. 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
2:15 pm - 4:20 pmBOS-POA
25h 05m2 stops
United Airlines Logo
3:25 pm - 11:57 pmPOA-BOS
33h 32m2 stops
$630United Airlines
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Mon, Mar 23 - Thu, Mar 26
Multiple Airlines Logo
3:05 pm - 7:15 pmBOS-POA
27h 10m2 stops
Multiple Airlines Logo
2:00 pm - 7:15 amPOA-BOS
42h 15m2 stops
$701Multiple Airlines
Find Deal
Mon, Apr 27 - Thu, May 7
Delta Logo
9:55 am - 2:05 pmBOS-POA
27h 10m1 stop
Delta Logo
7:45 am - 12:59 amPOA-BOS
18h 14m2 stops
$722Delta
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Mon, Mar 23 - Thu, Mar 26
Copa Airlines Logo
8:44 am - 12:25 amBOS-POA
14h 41m1 stop
Copa Airlines Logo
1:30 am - 11:10 pmPOA-BOS
22h 40m1 stop
$726Copa Airlines
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Mon, Mar 23 - Wed, Mar 25
American Airlines Logo
12:16 pm - 11:00 amBOS-POA
20h 44m2 stops
American Airlines Logo
5:55 pm - 11:35 amPOA-BOS
19h 40m2 stops
$727American Airlines
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Tue, Jan 20 - Tue, Jan 27
LATAM Airlines Logo
9:55 am - 9:20 amBOS-POA
22h 25m1 stop
LATAM Airlines Logo
5:45 pm - 7:35 amPOA-BOS
14h 50m1 stop
$767LATAM Airlines
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Mon, Apr 27 - Thu, May 7
Air Canada Logo
6:15 am - 4:30 pmBOS-POA
32h 15m2 stops
Air Canada Logo
2:10 pm - 9:32 amPOA-BOS
21h 22m2 stops
$820Air Canada
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Mon, Jan 12 - Sat, Jan 24
LATAM Airlines Logo
7:00 am - 9:15 amBOS-POA
25h 15m2 stops
LATAM Airlines Logo
12:35 pm - 7:35 amPOA-BOS
20h 00m1 stop
$846LATAM Airlines
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Mon, Apr 27 - Thu, May 7
Multiple Airlines Logo
7:55 am - 12:40 amBOS-POA
38h 45m2 stops
Multiple Airlines Logo
4:40 am - 11:35 amPOA-BOS
32h 55m2 stops
$858Multiple Airlines
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Tue, Jan 20 - Mon, Jan 26
Delta Logo
6:00 am - 12:25 amPVD-POA
41h 25m2 stops
Delta Logo
6:00 pm - 1:33 pmPOA-PVD
20h 33m2 stops
$1,196Delta
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Mon, Mar 16 - Fri, Mar 20

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 27
BOS9:55 amBoston Logan Intl
22h 25m
1 stop
POA9:20 amPorto Alegre Salgado Filho
May 7
POA5:45 pmPorto Alegre Salgado Filho
14h 50m
1 stop
BOS7:35 amBoston Logan Intl
$767
Find similar
LATAM Airlines
Apr 27
BOS7:00 amBoston Logan Intl
25h 15m
2 stops
POA9:15 amPorto Alegre Salgado Filho
May 7
POA12:35 pmPorto Alegre Salgado Filho
20h 00m
1 stop
BOS7:35 amBoston Logan Intl
$846
Find similar
LATAM Airlines
Mar 23
BOS9:55 amBoston Logan Intl
13h 30m
1 stop
POA12:25 amPorto Alegre Salgado Filho
Mar 26
POA5:55 pmPorto Alegre Salgado Filho
14h 40m
1 stop
BOS7:35 amBoston Logan Intl
$896
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
Mar 23
BOS8:44 amBoston Logan Intl
14h 41m
1 stop
POA12:25 amPorto Alegre Salgado Filho
Mar 25
POA1:30 amPorto Alegre Salgado Filho
22h 40m
1 stop
BOS11:10 pmBoston Logan Intl
$726
Find similar
Copa Airlines
Jan 20
BOS7:31 amBoston Logan Intl
14h 59m
1 stop
POA12:30 amPorto Alegre Salgado Filho
Jan 26
POA1:45 amPorto Alegre Salgado Filho
13h 54m
1 stop
BOS1:39 pmBoston Logan Intl
$1,284
Find similar
Copa Airlines
Jan 2
BOS7:31 amBoston Logan Intl
14h 59m
1 stop
POA12:30 amPorto Alegre Salgado Filho
Jan 22
POA1:45 amPorto Alegre Salgado Filho
13h 54m
1 stop
BOS1:39 pmBoston Logan Intl
$1,660
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 November 23, 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

Mon 3/23

2:15 pm-4:20 pm

2 stops25h 05m

Porto Alegre Salgado Filho

Thu 3/26

3:25 pm-11:57 pm

2 stops33h 32m

$630

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 4/27

3:05 pm-7:15 pm

2 stops27h 10m

Porto Alegre Salgado Filho

Thu 5/7

2:00 pm-7:15 am

2 stops42h 15m

$701

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 3/23

9:55 am-2:05 pm

1 stop27h 10m

Porto Alegre Salgado Filho

Thu 3/26

7:45 am-12:59 am

2 stops18h 14m

$722

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 3/23

8:44 am-12:25 am

1 stop14h 41m

Porto Alegre Salgado Filho

Wed 3/25

1:30 am-11:10 pm

1 stop22h 40m

$726

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 1/20

12:16 pm-11:00 am

2 stops20h 44m

Porto Alegre Salgado Filho

Tue 1/27

5:55 pm-11:35 am

2 stops19h 40m

$727

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 4/27

9:55 am-9:20 am

1 stop22h 25m

Porto Alegre Salgado Filho

Thu 5/7

5:45 pm-7:35 am

1 stop14h 50m

$767

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 1/12

6:15 am-4:30 pm

2 stops32h 15m

Porto Alegre Salgado Filho

Sat 1/24

2:10 pm-9:32 am

2 stops21h 22m

$820

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Mon 4/27

7:00 am-9:15 am

2 stops25h 15m

Porto Alegre Salgado Filho

Thu 5/7

12:35 pm-7:35 am

1 stop20h 00m

$846

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 1/20

7:55 am-12:40 am

2 stops38h 45m

Porto Alegre Salgado Filho

Mon 1/26

4:40 am-11:35 am

2 stops32h 55m

$858

ProvidencePorto Alegre

PVD - POA

PVDPOA

Providence-TFGreen

Mon 3/16

6:00 am-12:25 am

2 stops41h 25m

Porto Alegre Salgado Filho

Fri 3/20

6:00 pm-1:33 pm

2 stops20h 33m

$1,196

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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.

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 $778 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.
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  • 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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