Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Boston to Porto Alegre from $352

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Porto Alegre departing on 6/24. 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

Discover deals from 900+ travel sites with momondo.

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

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Boston to Porto Alegre

Cheap round-trip flights

Enter your travel dates to find the best prices.
Copa Airlines Logo
3:57 pm - 12:15 am
BOS
-
POA
31h 18m
1 stop
Copa Airlines Logo
1:20 am - 11:02 pm
POA
-
BOS
22h 42m
1 stop
$685Copa Airlines
Wed, Aug 26 - Tue, Sep 8
Avianca Logo
8:45 am - 10:40 am
BOS
-
POA
24h 55m
2 stops
Avianca Logo
2:00 pm - 7:10 am
POA
-
BOS
18h 10m
2 stops
$740Avianca
Tue, Sep 15 - Wed, Sep 30
Multiple Airlines Logo
8:45 am - 3:35 pm
BOS
-
POA
29h 50m
2 stops
Multiple Airlines Logo
6:25 pm - 7:35 am
POA
-
BOS
38h 10m
2 stops
$750Multiple Airlines
Thu, Oct 15 - Tue, Oct 27
Multiple Airlines Logo
8:45 am - 10:35 am
BOS
-
POA
24h 50m
2 stops
Multiple Airlines Logo
11:20 am - 6:35 am
POA
-
BOS
45h 15m
2 stops
$751Multiple Airlines
Sat, Oct 24 - Tue, Nov 10
Copa Airlines Logo
8:47 am - 12:20 am
BOS
-
POA
14h 33m
1 stop
Copa Airlines Logo
1:45 am - 10:03 pm
POA
-
BOS
22h 18m
1 stop
$753Copa Airlines
Sat, Oct 24 - Mon, Nov 9
LATAM Airlines Logo
12:19 pm - 9:15 am
BOS
-
POA
19h 56m
2 stops
LATAM Airlines Logo
6:40 am - 11:25 pm
POA
-
BOS
17h 45m
2 stops
$782LATAM Airlines
Wed, Aug 26 - Wed, Sep 9
LATAM Airlines Logo
9:55 am - 12:40 am
BOS
-
POA
13h 45m
1 stop
LATAM Airlines Logo
6:40 am - 11:23 pm
POA
-
BOS
17h 43m
2 stops
$827LATAM Airlines
Thu, Oct 15 - Tue, Oct 27
Copa Airlines Logo
8:45 am - 12:15 am
BOS
-
POA
14h 30m
1 stop
Copa Airlines Logo
1:20 am - 11:02 pm
POA
-
BOS
22h 42m
1 stop
$839Copa Airlines
Wed, Aug 26 - Tue, Sep 8
LATAM Airlines Logo
5:45 am - 6:15 am
BOS
-
POA
23h 30m
2 stops
LATAM Airlines Logo
5:50 pm - 2:47 pm
POA
-
BOS
21h 57m
2 stops
$854LATAM Airlines
Sun, Sep 27 - Wed, Sep 30
LATAM Airlines Logo
9:55 am - 8:10 am
BOS
-
POA
21h 15m
1 stop
LATAM Airlines Logo
7:05 pm - 3:20 pm
POA
-
BOS
21h 15m
2 stops
$885LATAM Airlines
Sun, May 24 - Mon, Jun 8

Copa Airlines flights from Boston to Porto Alegre

Our best Copa Airlines deals on Boston to Porto Alegre flight tickets
Copa Airlines
Aug 26
BOS3:57 pmBoston Logan Intl
31h 18m
1 stop
POA12:15 amPorto Alegre Salgado Filho
Sep 8
POA1:20 amPorto Alegre Salgado Filho
22h 42m
1 stop
BOS11:02 pmBoston Logan Intl
$685
Copa Airlines
May 13
BOS8:52 amBoston Logan Intl
14h 28m
1 stop
POA12:20 amPorto Alegre Salgado Filho
May 26
POA1:20 amPorto Alegre Salgado Filho
14h 24m
1 stop
BOS2:44 pmBoston Logan Intl
$716
Copa Airlines
Oct 24
BOS8:47 amBoston Logan Intl
14h 33m
1 stop
POA12:20 amPorto Alegre Salgado Filho
Nov 9
POA1:45 amPorto Alegre Salgado Filho
22h 18m
1 stop
BOS10:03 pmBoston Logan Intl
$753

LATAM Airlines flights from Boston to Porto Alegre

Our best LATAM Airlines deals on Boston to Porto Alegre flight tickets
LATAM Airlines
May 11
BOS5:05 pmBoston Logan Intl
20h 10m
2 stops
POA2:15 pmPorto Alegre Salgado Filho
May 26
POA7:05 pmPorto Alegre Salgado Filho
21h 03m
2 stops
BOS3:08 pmBoston Logan Intl
$729
LATAM Airlines
May 11
BOS5:05 pmBoston Logan Intl
20h 10m
2 stops
POA2:15 pmPorto Alegre Salgado Filho
May 25
POA4:10 amPorto Alegre Salgado Filho
20h 21m
2 stops
BOS11:31 pmBoston Logan Intl
$749
LATAM Airlines
May 11
BOS5:05 pmBoston Logan Intl
20h 10m
2 stops
POA2:15 pmPorto Alegre Salgado Filho
May 26
POA7:05 pmPorto Alegre Salgado Filho
21h 03m
2 stops
BOS3:08 pmBoston Logan Intl
$779

momondo Fare Finder

 
Customize your flight search to find flights from Boston 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 May 9, 2026.
Use the filters below to find and compare flights from Boston to Porto Alegre that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Wed 8/26

3:57 pm-12:15 am

1 stop31h 18m

Porto Alegre Salgado Filho

Tue 9/8

1:20 am-11:02 pm

1 stop22h 42m

$685

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Tue 9/15

8:45 am-10:40 am

2 stops24h 55m

Porto Alegre Salgado Filho

Wed 9/30

2:00 pm-7:10 am

2 stops18h 10m

$740

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Thu 10/15

8:45 am-3:35 pm

2 stops29h 50m

Porto Alegre Salgado Filho

Tue 10/27

6:25 pm-7:35 am

2 stops38h 10m

$750

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sat 10/24

8:45 am-10:35 am

2 stops24h 50m

Porto Alegre Salgado Filho

Tue 11/10

11:20 am-6:35 am

2 stops45h 15m

$751

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sat 10/24

8:47 am-12:20 am

1 stop14h 33m

Porto Alegre Salgado Filho

Mon 11/9

1:45 am-10:03 pm

1 stop22h 18m

$753

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Wed 8/26

12:19 pm-9:15 am

2 stops19h 56m

Porto Alegre Salgado Filho

Wed 9/9

6:40 am-11:25 pm

2 stops17h 45m

$782
Quickest round-trip

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Thu 10/15

9:55 am-12:40 am

1 stop13h 45m

Porto Alegre Salgado Filho

Tue 10/27

6:40 am-11:23 pm

2 stops17h 43m

$827

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Wed 8/26

8:45 am-12:15 am

1 stop14h 30m

Porto Alegre Salgado Filho

Tue 9/8

1:20 am-11:02 pm

1 stop22h 42m

$839

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 9/27

5:45 am-6:15 am

2 stops23h 30m

Porto Alegre Salgado Filho

Wed 9/30

5:50 pm-2:47 pm

2 stops21h 57m

$854

BostonPorto Alegre

BOS - POA

BOSPOA

Boston Logan Intl

Sun 5/24

9:55 am-8:10 am

1 stop21h 15m

Porto Alegre Salgado Filho

Mon 6/8

7:05 pm-3:20 pm

2 stops21h 15m

$885

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Porto Alegre from

How to get the cheapest flight ticket from Boston 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 typical price of a round-trip flight between Boston and Porto Alegre?

What is the cheapest month to fly to Porto Alegre?

The cheapest month to fly to Porto Alegre from Boston 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 Boston to Porto Alegre during May average around $568.

Can stopping save me money on Boston to Porto Alegre flights?

You could potentially save up to 26% on your flight if you consider stops on a Boston to Porto Alegre flight.

How have Boston to Porto Alegre flight prices changed over time?

When to book flights from Boston to Porto Alegre

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Porto Alegre according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Porto Alegre (BOS to POA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Porto Alegre

Fastest flight time

13h 45m

Direct flights

None
The fastest flight from Boston to Porto Alegre takes 13h 45m
There are no direct flights from Boston to Porto Alegre. There are no popular flight routes from Boston to Porto Alegre.
Search flight deals

Frequently asked questions about flying from Boston to Porto Alegre

  • How far is Boston Logan Intl to Porto Alegre Salgado Filho by plane?

    There are 5155.0 mi between Boston Logan Intl and Porto Alegre Salgado Filho. Flights usually cover this in 13h 45m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Porto Alegre Salgado Filho Airport?

    Prices for flights from Boston Logan Intl Airport to Porto Alegre Salgado Filho Airport were last updated today.

  • How many operators does momondo search for flights from Boston Logan Intl Airport to Porto Alegre Salgado Filho Airport?

  • How old do you have to be to fly from Boston Logan Intl Airport 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 Boston Logan Intl Airport 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 required for your trip to Porto Alegre Salgado Filho Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Porto Alegre Salgado Filho Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Boston to Porto Alegre?

Best airlines flying from Boston to Porto Alegre

Compare and see reviews for airlines that fly from Boston to Porto Alegre with momondo
Airline
Rating
Free Cancellation
Price
Copa AirlinesPriceFrom $270Free CancellationRating
7.5
1,584 reviews
Search Copa Airlines flights
United AirlinesPriceFrom $334Free CancellationRating
7.4
9,697 reviews
Search United Airlines flights
DeltaPriceFrom $575Free CancellationRating
7.9
8,460 reviews
Search Delta flights
LATAM AirlinesPriceFrom $754Free CancellationRating
7.4
1,918 reviews
Search LATAM Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Porto Alegre?

It is quick and easy to find Boston to Porto Alegre flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Porto Alegre that suits you.

Can I find flights from Boston to Porto Alegre with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Boston to Porto Alegre flights to just show those with flexible booking policies.

How can momondo help me find flights from Boston to Porto Alegre?

Once all potential Boston to Porto Alegre flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Boston to Porto Alegre right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Porto Alegre, momondo offers a useful price alert feature which will track prices for flights to Porto Alegre from Boston and alert you when they change.

An easier way to manage your Porto Alegre trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 6/8
Mon 6/15
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Brazil