$462+ Cheap flights from Boston (BOS) to Porto Alegre (POA)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — POA
Nov 24 — Dec 11
Round-trip
1 adult, Economy
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Cheapest flights from Boston to Porto AlegreExplore the most affordable flight options available from Boston to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
Explore the most affordable flight options available from Boston to Porto Alegre. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/26:59 pm -
2 stops34h 56m
Mon 12/71:35 am -
1 stop22h 34m
Deal found 10/25![Multiple Airlines logo]()
$919
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/32:54 pm -
2 stops23h 56m
Mon 12/71:35 am -
1 stop22h 34m
Deal found 10/25![Multiple Airlines logo]()
$941
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:59 pm -
2 stops47h 01m
Tue 12/81:35 am -
1 stop13h 48m
Deal found 10/25![Multiple Airlines logo]()
$947
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:59 pm -
2 stops35h 41m
Mon 12/71:35 am -
1 stop22h 34m
Deal found 10/25![Multiple Airlines logo]()
$948
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:43 pm -
1 stop31h 42m
Mon 12/71:35 am -
1 stop22h 34m
Deal found 10/25![Copa Airlines logo]()
$953
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/259:05 am -
2 stops19h 35m
Fri 3/129:15 am -
1 stop23h 30m
Deal found 10/23![Delta logo]()
$956
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:00 am -
2 stops20h 40m
Thu 2/256:00 pm -
1 stop14h 45m
Deal found 10/21![Delta logo]()
$957
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/299:05 am -
2 stops21h 05m
Mon 12/71:35 am -
1 stop22h 34m
Deal found 10/25![Multiple Airlines logo]()
$958
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/299:05 am -
1 stop28h 15m
Thu 12/109:20 am -
1 stop23h 25m
Deal found 10/25![Delta logo]()
$959
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/264:20 pm -
2 stops36h 20m
Thu 3/117:30 am -
2 stops19h 28m
Deal found 10/23![Delta logo]()
$964
This LATAM Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/239:05 am -
2 stops19h 35m
Fri 2/263:00 pm -
2 stops21h 03m
Deal found 10/21![LATAM Airlines logo]()
$966
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/299:05 am -
1 stop28h 15m
Mon 12/147:30 am -
2 stops33h 43m
Deal found 10/25![Delta logo]()
$967
Best flights from Boston to Porto AlegreDiscover carefully curated flight deals from Boston to Porto Alegre that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
Discover carefully curated flight deals from Boston to Porto Alegre that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 25, 2026.
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/157:00 am -
2 stops22h 40m
Sat 3/276:00 pm -
1 stop14h 45m
Deal found 10/23![Delta logo]()
$956
This Copa Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:34 am -
1 stop14h 51m
Thu 12/101:35 am -
1 stop22h 27m
Deal found 10/22![Copa Airlines logo]()
$1,027
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/59:05 am -
2 stops43h 35m
Mon 12/147:30 am -
2 stops33h 43m
Deal found 10/25![Delta logo]()
$964
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/12:00 pm -
2 stops20h 20m
Thu 12/109:20 am -
1 stop23h 25m
Deal found 10/25![Delta logo]()
$964
This Copa Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/167:41 am -
1 stop14h 44m
Tue 12/11:35 am -
1 stop22h 34m
Deal found 10/22![Copa Airlines logo]()
$1,062
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:45 am -
2 stops21h 55m
Tue 3/97:30 am -
2 stops19h 28m
Deal found 10/23![Delta logo]()
$964
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:00 am -
2 stops20h 40m
Sun 3/145:40 pm -
2 stops20h 41m
Deal found 10/23![Delta logo]()
$964
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/48:00 am -
2 stops20h 40m
Fri 12/115:40 pm -
2 stops23h 13m
Deal found 10/25![Delta logo]()
$964
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/137:50 pm -
2 stops26h 30m
Sat 3/276:00 pm -
1 stop14h 45m
Deal found 10/23![Delta logo]()
$964
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/225:40 pm -
2 stops35h 00m
Fri 3/125:15 am -
1 stop27h 30m
Deal found 10/23![Delta logo]()
$1,070
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/59:05 am -
1 stop13h 15m
Fri 12/115:15 am -
1 stop27h 30m
Deal found 10/25![Delta logo]()
$1,073
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/29:10 am -
2 stops19h 30m
Sun 12/135:40 pm -
2 stops20h 53m
Deal found 10/25![Delta logo]()
$1,078
Last-minute flights from Boston to Porto AlegreDiscover last-minute flight deals from Boston to Porto Alegre. Data last updated October 25, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Porto Alegre. Data last updated October 25, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/165:25 pm -
2 stops36h 30m
Tue 12/11:35 am -
1 stop13h 48m
Deal found 10/22![Multiple Airlines logo]()
$990
This FlightHub deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:55 am -
2 stops38h 35m
Wed 12/22:20 pm -
2 stops18h 15m
Deal found 10/24![Multiple Airlines logo]()
$976
This Delta deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/238:00 am -
2 stops20h 40m
Thu 2/256:00 pm -
1 stop14h 45m
Deal found 10/21![Delta logo]()
$957
This LATAM Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/239:05 am -
2 stops19h 35m
Fri 2/263:00 pm -
2 stops21h 03m
Deal found 10/21![LATAM Airlines logo]()
$966
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/249:10 am -
2 stops28h 00m
Thu 3/117:30 am -
2 stops19h 28m
Deal found 10/23![Delta logo]()
$971
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/249:10 am -
2 stops28h 00m
Fri 3/129:15 am -
2 stops30h 34m
Deal found 10/23![Delta logo]()
$974
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/256:05 am -
2 stops22h 35m
Thu 3/115:15 am -
1 stop27h 30m
Deal found 10/23![Delta logo]()
$956
This Delta deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/261:45 pm -
2 stops38h 55m
Sat 3/137:30 am -
2 stops32h 11m
Deal found 10/23![Delta logo]()
$964
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/299:05 am -
2 stops21h 05m
Mon 12/71:35 am -
1 stop22h 34m
Deal found 10/25![Multiple Airlines logo]()
$958
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/299:05 am -
1 stop28h 15m
Thu 12/109:20 am -
1 stop23h 25m
Deal found 10/25![Delta logo]()
$959
This Delta deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/299:05 am -
1 stop28h 15m
Mon 12/147:30 am -
2 stops33h 43m
Deal found 10/25![Delta logo]()
$967
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/302:50 pm -
2 stops25h 00m
Mon 12/71:35 am -
1 stop22h 34m
Deal found 10/25![Multiple Airlines logo]()
$988
One-way flights from Boston to Porto AlegreSearch for one-way flight options from Boston to Porto Alegre. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
Search for one-way flight options from Boston to Porto Alegre. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
This VIAZA deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure VIAZA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/102:54 pm -
2 stops23h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![LATAM Airlines logo]()
$462
This VIAZA deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure VIAZA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/192:55 pm -
2 stops21h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![LATAM Airlines logo]()
$473
This Trip.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/39:05 am -
1 stop20h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$485
This Kiwi.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/263:00 pm -
3 stops30h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$488
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/114:20 pm -
3 stops53h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$493
This VIAZA deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure VIAZA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/109:05 am -
1 stop21h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![LATAM Airlines logo]()
$497
This Kiwi.com deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2411:08 am -
3 stops42h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![Multiple Airlines logo]()
$502
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/144:20 pm -
3 stops43h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$507
This VIAZA deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure VIAZA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/152:54 pm -
2 stops23h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![LATAM Airlines logo]()
$511
This Copa Airlines deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/247:41 am -
1 stop14h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Copa Airlines logo]()
$515
Find flight deals from Boston to Porto Alegre
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Porto Alegre (POA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 25, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $917 (LATAM Airlines) |
One-way from | $462 (VIAZA) |
Popular in | December |
Cheapest in | March |
Average price | $1,033 |
Cheapflights 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, Cheapflights users made 7,457,451 searches. Data last updated October 25, 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
Cheapest round-trip
BostonPorto Alegre
BOS Boston Logan Intl - POA Porto Alegre Salgado Filho
BOSPOA
Boston Logan Intl
Thu 12/10
2:54 pm-4:50 pm
2 stops23h 56m
Porto Alegre Salgado Filho
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$464
Quickest round-trip
BostonPorto Alegre
BOS Boston Logan Intl - POA Porto Alegre Salgado Filho
BOSPOA
Boston Logan Intl
Thu 11/19
2:55 pm-2:15 pm
2 stops21h 20m
Porto Alegre Salgado Filho
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$473
BostonPorto Alegre
BOS Boston Logan Intl - POA Porto Alegre Salgado Filho
BOSPOA
Boston Logan Intl
Thu 11/26
3:00 pm-11:35 pm
3 stops30h 35m
Porto Alegre Salgado Filho
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$488
BostonPorto Alegre
BOS Boston Logan Intl - POA Porto Alegre Salgado Filho
BOSPOA
Boston Logan Intl
Thu 11/26
2:50 pm-12:25 am
1 stop31h 35m
Porto Alegre Salgado Filho
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$515
BostonPorto Alegre
BOS Boston Logan Intl - POA Porto Alegre Salgado Filho
BOSPOA
Boston Logan Intl
Wed 2/24
9:05 am-8:30 am
1 stop21h 25m
Porto Alegre Salgado Filho
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$516
BostonPorto Alegre
BOS Boston Logan Intl - POA Porto Alegre Salgado Filho
BOSPOA
Boston Logan Intl
Wed 3/3
6:55 am-6:40 am
2 stops21h 45m
Porto Alegre Salgado Filho
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$518
BostonPorto Alegre
BOS Boston Logan Intl - POA Porto Alegre Salgado Filho
BOSPOA
Boston Logan Intl
Wed 2/24
6:00 am-6:40 am
2 stops22h 40m
Porto Alegre Salgado Filho
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$518
BostonPorto Alegre
BOS Boston Logan Intl - POA Porto Alegre Salgado Filho
BOSPOA
Boston Logan Intl
Tue 3/2
5:45 am-4:50 pm
2 stops33h 05m
Porto Alegre Salgado Filho
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$524
BostonPorto Alegre
BOS Boston Logan Intl - POA Porto Alegre Salgado Filho
BOSPOA
Boston Logan Intl
Wed 3/3
1:31 pm-4:25 pm
3 stops48h 54m
Porto Alegre Salgado Filho
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$557
BostonPorto Alegre
BOS Boston Logan Intl - POA Porto Alegre Salgado Filho
BOSPOA
Boston Logan Intl
Mon 3/15
7:00 am-6:40 am
2 stops22h 40m
Porto Alegre Salgado Filho
Sat 3/27
6:00 pm-7:45 am
1 stop14h 45m
$956
Showing 1-10 of 21 resultsSorted by cheapest first
Compare providers for flights from Boston to Porto Alegre
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Porto Alegre in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars |
- Most accurate provider: When it comes to deals on Boston-Porto Alegre flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Boston-Porto Alegre flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Boston-Porto Alegre flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boston-Porto Alegre flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Porto Alegre flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boston to Porto Alegre
Have a flexible travel schedule? Discover the best time to fly to Porto Alegre from Boston with our price prediction graph.
BOS-POA
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Boston to Porto Alegre
What is the cheapest month to book a flight from Boston to Porto Alegre?
Currently, March is the cheapest month in which you can book a flight from Boston to Porto Alegre (average of $712). Flying from Boston to Porto Alegre in December is currently the most expensive (average of $1,449). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Boston to Porto Alegre?
Airfare is typical for this route at the moment.
Boston to Porto Alegre flights typically cost between $824 and $1,114 in March.The cheapest round-trip price found within the last 5 days was $917 on LATAM Airlines (Mar 14-Mar 23).
Reviews of airlines servicing Porto Alegre
Get insights into the airlines that provide service to Porto Alegre. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto Alegre. Reviews last updated October 25, 2026.
Read reviews from past customers who have flown Delta,Copa Airlines, andLATAM Airlines from Boston to Porto Alegre. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.8
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Crew
8.5
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.8
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Crew
8.5
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.8
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Crew
8.5
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.8
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Crew
8.5
Boarding
8.1
Entertainment
7.8
Food
7.2
Overall
7.8
Comfort
7.8
Reviews
1 / 20
6.0
GoodCidalia,Aug 2023
BOS - MIA
Related info for your journey
Find useful and relevant information for your journey from Boston to Porto Alegre. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Boston and Porto Alegre flights
Browse other Boston and Porto Alegre flight options. Last updated on October 25, 2026.
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Other flights to Porto Alegre
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Top 4 airlines flying from Boston to Porto Alegre
Discover the top 4 airlines that operate flights from Boston to Porto Alegre. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$294 | Average$1,115 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$622 | Average$1,177 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$762 | Average$1,015 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$765 | Average$1,619 | FlexibilityNo cancel fee | On-timeN/A |