$311+ Cheap flights from Boston (BOS) to Porto Alegre (POA)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — POA
Jul 13 — Jul 201
Round-trip
1 adult, Economy
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 June 13, 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 June 13, 2026.
This LATAM Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 11/247:50 pm
BOS
- POA
2 stops26h 50m
LATAM Airlines
Sat 3/202:25 pm
POA
- BOS
1 stop17h 10m
LATAM Airlines
Deal found 6/11![LATAM Airlines logo]()
$721
This oojo deal was found by Cheapflights users on 6/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/248:45 am
BOS
- POA
2 stops24h 50m
Avianca
Fri 11/611:20 am
POA
- BOS
2 stops21h 15m
Avianca
Deal found 6/8![Avianca logo]()
$756
This FlightHub deal was found by Cheapflights users on 6/9. 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.
Tue 9/228:45 am
BOS
- POA
2 stops25h 05m
Avianca
Tue 9/296:25 pm
POA
- BOS
2 stops37h 45m
Avianca
Deal found 6/9![Avianca logo]()
$760
This Kissandfly.com deal was found by Cheapflights users on 6/9. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/113:18 pm
BOS
- POA
2 stops25h 57m
LATAM Airlines
Fri 6/2611:30 pm
POA
- BOS
2 stops33h 05m
LATAM Airlines
Deal found 6/9![LATAM Airlines logo]()
$807
This Copa Airlines deal was found by Cheapflights users on 6/9. 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.
Thu 6/114:00 pm
BOS
- POA
1 stop31h 20m
Copa Airlines
Thu 6/251:20 am
POA
- BOS
1 stop22h 48m
Copa Airlines
Deal found 6/9![Copa Airlines logo]()
$820
This Expedia deal was found by Cheapflights users on 6/9. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:55 am
BOS
- POA
1 stop24h 20m
Multiple Airlines
Tue 10/136:25 pm
POA
- BOS
2 stops37h 45m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$832
This Copa Airlines deal was found by Cheapflights users on 6/9. 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.
Thu 10/18:47 am
BOS
- POA
1 stop14h 33m
Copa Airlines
Mon 10/121:20 am
POA
- BOS
1 stop14h 19m
Copa Airlines
Deal found 6/9![Copa Airlines logo]()
$840
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/225:05 pm
BOS
- POA
2 stops24h 10m
LATAM Airlines
Mon 7/67:05 pm
POA
- BOS
2 stops22h 03m
LATAM Airlines
Deal found 6/12![LATAM Airlines logo]()
$872
This Copa Airlines deal was found by Cheapflights users on 6/9. 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.
Sun 7/193:57 pm
BOS
- POA
1 stop31h 18m
Copa Airlines
Mon 8/31:15 am
POA
- BOS
1 stop14h 19m
Copa Airlines
Deal found 6/9![Copa Airlines logo]()
$905
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 June 13, 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 June 13, 2026.
This Copa Airlines deal was found by Cheapflights users on 6/9. 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.
Sun 7/193:57 pm
BOS
- POA
1 stop31h 18m
Copa Airlines
Mon 8/31:15 am
POA
- BOS
1 stop14h 19m
Copa Airlines
Deal found 6/9![Copa Airlines logo]()
$905
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/285:45 am
BOS
- POA
2 stops33h 40m
United Airlines
Sun 7/194:05 pm
POA
- BOS
2 stops20h 11m
United Airlines
Deal found 6/11![United Airlines logo]()
$966
This KAYAK deal was found by Cheapflights users on 6/12. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2210:00 am
BOS
- POA
1 stop13h 35m
LATAM Airlines
Mon 7/64:45 am
POA
- BOS
2 stops19h 50m
LATAM Airlines
Deal found 6/12![LATAM Airlines logo]()
$979
This Copa Airlines deal was found by Cheapflights users on 6/9. 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 7/148:45 am
BOS
- POA
1 stop14h 30m
Copa Airlines
Mon 8/31:15 am
POA
- BOS
1 stop14h 19m
Copa Airlines
Deal found 6/9![Copa Airlines logo]()
$950
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/265:45 am
BOS
- POA
2 stops33h 25m
United Airlines
Sun 7/194:05 pm
POA
- BOS
2 stops25h 33m
United Airlines
Deal found 6/11![United Airlines logo]()
$966
This Copa Airlines deal was found by Cheapflights users on 6/12. 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 6/228:52 am
BOS
- POA
1 stop14h 28m
Copa Airlines
Sun 7/51:15 am
POA
- BOS
1 stop14h 19m
Copa Airlines
Deal found 6/12![Copa Airlines logo]()
$960
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/265:45 am
BOS
- POA
2 stops33h 25m
United Airlines
Tue 7/213:40 pm
POA
- BOS
2 stops22h 17m
United Airlines
Deal found 6/11![United Airlines logo]()
$966
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:43 pm
BOS
- POA
2 stops19h 57m
United Airlines
Thu 7/234:20 pm
POA
- BOS
2 stops32h 01m
United Airlines
Deal found 6/11![United Airlines logo]()
$969
This United Airlines deal was found by Cheapflights users on 6/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/309:50 am
BOS
- POA
2 stops29h 30m
United Airlines
Tue 7/143:40 pm
POA
- BOS
2 stops31h 13m
United Airlines
Deal found 6/8![United Airlines logo]()
$997
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2910:35 am
BOS
- POA
2 stops26h 55m
United Airlines
Tue 7/213:40 pm
POA
- BOS
2 stops22h 17m
United Airlines
Deal found 6/11![United Airlines logo]()
$1,041
This United Airlines deal was found by Cheapflights users on 6/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/105:45 am
BOS
- POA
2 stops51h 50m
United Airlines
Thu 7/162:15 pm
POA
- BOS
2 stops28h 09m
United Airlines
Deal found 6/8![United Airlines logo]()
$1,068
Last-minute flights from Boston to Porto AlegreDiscover last-minute flight deals from Boston to Porto Alegre. Data last updated June 13, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to Porto Alegre. Data last updated June 13, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/225:05 pm
BOS
- POA
2 stops24h 10m
LATAM Airlines
Mon 7/67:05 pm
POA
- BOS
2 stops22h 03m
LATAM Airlines
Deal found 6/12![LATAM Airlines logo]()
$872
This Copa Airlines deal was found by Cheapflights users on 6/12. 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 6/228:52 am
BOS
- POA
1 stop14h 28m
Copa Airlines
Sun 7/51:15 am
POA
- BOS
1 stop14h 19m
Copa Airlines
Deal found 6/12![Copa Airlines logo]()
$960
This LATAM Airlines deal was found by Cheapflights users on 6/10. 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 6/225:05 pm
BOS
- POA
2 stops24h 10m
LATAM Airlines
Sat 7/251:40 pm
POA
- BOS
2 stops18h 55m
LATAM Airlines
Deal found 6/10![LATAM Airlines logo]()
$1,043
This LATAM Airlines deal was found by Cheapflights users on 6/10. 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 6/225:05 pm
BOS
- POA
2 stops24h 10m
LATAM Airlines
Tue 7/217:05 pm
POA
- BOS
2 stops20h 54m
LATAM Airlines
Deal found 6/10![LATAM Airlines logo]()
$1,051
This LATAM Airlines deal was found by Cheapflights users on 6/10. 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 6/225:05 pm
BOS
- POA
2 stops24h 10m
LATAM Airlines
Wed 7/221:50 pm
POA
- BOS
2 stops22h 25m
LATAM Airlines
Deal found 6/10![LATAM Airlines logo]()
$1,053
This United Airlines deal was found by Cheapflights users on 6/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/223:08 pm
BOS
- POA
2 stops21h 57m
United Airlines
Thu 7/232:15 pm
POA
- BOS
2 stops34h 06m
United Airlines
Deal found 6/10![United Airlines logo]()
$1,111
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 6/223:10 pm
BOS
- POA
2 stops30h 35m
Multiple Airlines
Tue 7/211:15 am
POA
- BOS
1 stop14h 19m
Multiple Airlines
Deal found 6/10![Multiple Airlines logo]()
$1,178
This Delta deal was found by Cheapflights users on 6/10. 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 6/2210:00 am
BOS
- POA
1 stop13h 35m
Delta
Tue 7/217:05 pm
POA
- BOS
2 stops29h 28m
Delta
Deal found 6/10![Delta logo]()
$1,192
This Delta deal was found by Cheapflights users on 6/10. 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 6/2210:00 am
BOS
- POA
1 stop22h 20m
Delta
Mon 7/205:50 pm
POA
- BOS
2 stops20h 31m
Delta
Deal found 6/10![Delta logo]()
$1,194
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 June 13, 2026.
Search for one-way flight options from Boston to Porto Alegre. Find affordable one-way fares based on user searches. Data last updated June 13, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 8/133:57 pm
BOS
- POA
2 stops53h 48m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 8/128:45 am
BOS
- POA
2 stops34h 50m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$313
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 8/113:57 pm
BOS
- POA
2 stops46h 43m
Multiple Airlines
Deal found 6/8![Multiple Airlines logo]()
$318
This KAYAK deal was found by Cheapflights users on 6/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/118:05 am
BOS
- POA
2 stops29h 15m
Avianca
Deal found 6/11![Avianca logo]()
$333
This Copa Airlines deal was found by Cheapflights users on 6/8. 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.
Thu 8/133:57 pm
BOS
- POA
1 stop31h 18m
Copa Airlines
Deal found 6/8![Copa Airlines logo]()
$395
This KAYAK deal was found by Cheapflights users on 6/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/69:55 am
BOS
- POA
2 stops27h 50m
LATAM Airlines
Deal found 6/11![LATAM Airlines logo]()
$421
This Copa Airlines deal was found by Cheapflights users on 6/8. 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 8/118:45 am
BOS
- POA
1 stop14h 30m
Copa Airlines
Deal found 6/8![Copa Airlines logo]()
$440
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 June 13, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $721 (LATAM Airlines) |
One-way from | $311 (Kiwi.com) |
Popular in | June |
Cheapest in | March |
Average price | $1,408 |
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 2,558,603 searches. Data last updated June 13, 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 - POA
BOSPOA
Boston Logan Intl
Sun 7/19
3:57 pm-12:15 am
1 stop31h 18m
Porto Alegre Salgado Filho
Mon 8/3
1:15 am-2:34 pm
1 stop14h 19m
$905
BostonPorto Alegre
BOS - POA
BOSPOA
Boston Logan Intl
Tue 7/14
8:45 am-12:15 am
1 stop14h 30m
Porto Alegre Salgado Filho
Mon 8/3
1:15 am-2:34 pm
1 stop14h 19m
$950
Quickest round-trip
BostonPorto Alegre
BOS - POA
BOSPOA
Boston Logan Intl
Mon 6/22
8:52 am-12:20 am
1 stop14h 28m
Porto Alegre Salgado Filho
Sun 7/5
1:15 am-2:34 pm
1 stop14h 19m
$960
BostonPorto Alegre
BOS - POA
BOSPOA
Boston Logan Intl
Sun 6/28
5:45 am-4:25 pm
2 stops33h 40m
Porto Alegre Salgado Filho
Sun 7/19
4:05 pm-11:16 am
2 stops20h 11m
$966
BostonPorto Alegre
BOS - POA
BOSPOA
Boston Logan Intl
Fri 6/26
5:45 am-4:10 pm
2 stops33h 25m
Porto Alegre Salgado Filho
Sun 7/19
4:05 pm-4:38 pm
2 stops25h 33m
$966
BostonPorto Alegre
BOS - POA
BOSPOA
Boston Logan Intl
Fri 6/26
5:45 am-4:10 pm
2 stops33h 25m
Porto Alegre Salgado Filho
Tue 7/21
3:40 pm-12:57 pm
2 stops22h 17m
$966
BostonPorto Alegre
BOS - POA
BOSPOA
Boston Logan Intl
Wed 7/1
6:43 pm-3:40 pm
2 stops19h 57m
Porto Alegre Salgado Filho
Thu 7/23
4:20 pm-11:21 pm
2 stops32h 01m
$969
BostonPorto Alegre
BOS - POA
BOSPOA
Boston Logan Intl
Mon 6/22
10:00 am-12:35 am
1 stop13h 35m
Porto Alegre Salgado Filho
Mon 7/6
4:45 am-11:35 pm
2 stops19h 50m
$979
BostonPorto Alegre
BOS - POA
BOSPOA
Boston Logan Intl
Tue 6/30
9:50 am-4:20 pm
2 stops29h 30m
Porto Alegre Salgado Filho
Tue 7/14
3:40 pm-9:53 pm
2 stops31h 13m
$997
BostonPorto Alegre
BOS - POA
BOSPOA
Boston Logan Intl
Mon 6/29
10:35 am-2:30 pm
2 stops26h 55m
Porto Alegre Salgado Filho
Tue 7/21
3:40 pm-12:57 pm
2 stops22h 17m
$1,041
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 June.
| 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 |
- 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 $693). Flying from Boston to Porto Alegre in June is currently the most expensive (average of $1,408). 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?
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 June 13, 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.
Overall
7.9
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.9
Crew
8.5
Entertainment
7.8
Boarding
8.1
Food
7.2
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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
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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 2,558,603 searches. Data last updated June 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$279 | Average$715 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$334 | Average$547 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$722 | Average$1,013 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$765 | Average$1,165 | FlexibilityNo cancel fee | On-timeN/A |