BOS - POA

$372 Find Cheap Flights from Boston to Porto Alegre - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Porto Alegre departing on 1/19. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
$680
Typical prices: $630-$800
Copa Airlines
Mon 10/12Mon 11/2
BOS - POA • 1 stop
Cheapest one-way
$372
Typical prices: $319-$377
Multiple Airlines
Tue 1/19
BOS - POA • 2 stops
Top airlines
Cheapest • from $680 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Boston and Porto Alegre. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $1,075 (round-trip)
Shortest trip • 14h 08m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 26% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Porto Alegre!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Boston to Porto Alegre (BOS-POA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Porto Alegre that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Porto Alegre

Mon, Oct 12 - Mon, Nov 2
Copa Airlines Logo
8:47 am - 12:20 amBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
14h 33m1 stop Panama City Tocumen Intl
Copa Airlines Logo
1:30 am - 10:01 pmPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
22h 31m1 stop Panama City Tocumen Intl
$680Copa Airlines
Mon, Sep 21 - Tue, Sep 29
Copa Airlines Logo
3:55 pm - 12:20 amBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
31h 25m1 stop Panama City Tocumen Intl
Copa Airlines Logo
1:20 am - 11:02 pmPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
22h 42m1 stop Panama City Tocumen Intl
$680Copa Airlines
Mon, Sep 21 - Tue, Sep 29
Copa Airlines Logo
3:55 pm - 12:20 amBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
31h 25m1 stop Panama City Tocumen Intl
Copa Airlines Logo
1:20 am - 11:02 pmPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
22h 42m1 stop Panama City Tocumen Intl
$705Copa Airlines
Tue, Oct 20 - Tue, Oct 27
Multiple Airlines Logo
8:45 am - 12:40 amBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
38h 55m2 stops Bogotá El Dorado Sao Paulo Guarulhos Intl
Multiple Airlines Logo
7:35 pm - 7:35 amPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
37h 00m2 stops Sao Paulo Guarulhos Intl Bogotá El Dorado
$762Multiple Airlines
Tue, Nov 24 - Sat, Mar 20
LATAM Airlines Logo
7:05 am - 4:50 pmBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
31h 45m2 stops Miami Santiago Arturo Merino Benitez
LATAM Airlines Logo
10:45 am - 6:45 amPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
21h 00m1 stop Sao Paulo Guarulhos Intl
$767LATAM Airlines
Thu, Oct 15 - Sun, Oct 25
Avianca Logo
8:45 am - 8:30 pmBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
34h 45m2 stops Bogotá El Dorado Sao Paulo Guarulhos Intl
Avianca Logo
7:35 pm - 7:35 amPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
37h 00m2 stops Sao Paulo Guarulhos Intl Bogotá El Dorado
$767Avianca
Tue, Nov 24 - Sat, Mar 20
LATAM Airlines Logo
7:05 am - 4:50 pmBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
31h 45m2 stops Miami Santiago Arturo Merino Benitez
LATAM Airlines Logo
5:40 pm - 7:11 pmPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
26h 31m2 stops Santiago Arturo Merino Benitez Miami
$787LATAM Airlines
Mon, Sep 21 - Wed, Sep 30
GOL Logo
7:42 am - 8:35 pmBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
35h 53m2 stops Miami Sao Paulo Guarulhos Intl
GOL Logo
1:40 pm - 10:14 amPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
21h 34m2 stops Sao Paulo Guarulhos Intl Miami
$952GOL
Thu, Oct 15 - Sun, Oct 25
United Airlines Logo
5:45 am - 9:55 amBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
51h 10m2 stops Washington, D.C. Dulles Intl Sao Paulo Guarulhos Intl
United Airlines Logo
3:30 pm - 12:46 amPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
34h 16m3 stops Rio de Janeiro–Galeão Intl Houston George Bush Intcntl Chicago O'Hare Intl
$1,422United Airlines
Wed, Dec 16 - Tue, Jan 5
GOL Logo
3:08 pm - 3:00 pmBOS  Boston Logan Intl-POA Porto Alegre Salgado Filho
21h 52m2 stops Miami Sao Paulo Guarulhos Intl
GOL Logo
5:40 am - 8:51 pmPOA  Porto Alegre Salgado Filho-BOS Boston Logan Intl
41h 11m2 stops Sao Paulo Guarulhos Intl Miami
$1,982GOL
Booking Insights

KAYAK's insights & trends for Boston to Porto Alegre flights

Get data-powered insights and trends into flights from Boston to Porto Alegre to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Boston to Porto Alegre?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Boston to Porto Alegre departing in September.

Flight prices are below average for this route right now.

Flights to Porto Alegre from Boston usually cost between $781 and $1,179 in September.
The lowest price found in the past 5 days was $680 on Copa Airlines (Sep 21-Sep 29).

What is the cheapest month to fly from Boston to Porto Alegre?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Porto Alegre, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Porto Alegre is March, where tickets cost $712 (return) on average. On the other hand, the most expensive months are December and May, where the average cost of round-trip tickets is $1,439 and $1,392 respectively.

Good to know

Low season

June

Cheapest flight

$372
Best time to beat the crowds but there is an average 24% increase in price.
Most popular time to fly with an average 45% increase in price.
Flight from Boston to Porto Alegre

When to book flights from Boston to Porto Alegre

Are your dates flexible? Find out the best times to travel from Boston to Porto Alegre based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Boston to Porto Alegre

  • What is the cheapest flight from Boston to Porto Alegre?

    In the last 5 days, the lowest price for a flight from Boston to Porto Alegre was $372 for a one-way ticket and $680 for a round-trip.

  • Do I need a passport to fly between Boston and Porto Alegre?

    Yes, you’ll need a passport to travel to Porto Alegre from Boston.

  • Which aircraft models fly most regularly from Boston to Porto Alegre?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Boston to Porto Alegre?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Boston and Porto Alegre, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Boston to Porto Alegre, Delta or Copa Airlines?

    The two airlines most popular with KAYAK users for flights from Boston to Porto Alegre are Delta and Copa Airlines. With an average price for the route of $1,187 and an overall rating of 7.8, Delta is the most popular choice. Copa Airlines is also a great choice for the route, with an average price of $795 and an overall rating of 7.6.

  • How does KAYAK find such low prices on flights from Boston to Porto Alegre?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Porto Alegre.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Porto Alegre?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto Alegre from Boston is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Porto Alegre?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Porto Alegre with an airline and back to Boston with another airline. Booking your flights between Boston and POA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Porto Alegre?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Porto Alegre from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Boston to Porto Alegre

 
See real verified KAYAK customer reviews for airlines flying from Boston to Porto Alegre. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Boston to Porto Alegre? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8497 reviews
7.8Entertainment
7.2Food
8.1Boarding
7.8Comfort
8.5Crew
Airline reviews

Stewardess was not accommodating when I requested a second drink.

8.0 ExcellentAnonymous, Aug 2026
Read more Delta reviews

Stewardess was not accommodating when I requested a second drink.

Although I know the Airlines cannot control the situation when there’s a ground stoppage, it would’ve been nicer if we would have had more up-to-date information clarity around the delays. Additionally, I think the delays also took a toll on the Cabin crew, particularly the lead flight attendant in first class. She was not very friendly when we boarded the plane for many of the passengers. Number one she refused to hang a garment bag in the front closet for a first class passenger, she was unwilling to dispose of an empty bottle in the trash as I was boarding (despite drinking a bottle of water herself and needing to disregard), and she was very combative with a passenger, who needed to access something from his bag that was Gate checked. Frankly, it was really unfortunate as I’ve never seen a flight attendant behave that way directly to the passengers, particularly when none of us had done anything wrong.

Flight from Savannah arrived very late and we did not take off till 2 hours after scheduled departure!

Very good seat and service. No complaints about the food. Take off delayed due to airport traffic

It is usually very pleasant. Good service for the price, international flights are even better

Flight attendant was very poor in taking care or showing attention. I slept up front for a few and missed the snacks. She saw me many times, went by me many times and never once asked if I needed anything. The whole 2 hours flight. And this is to a Diamond member in first.

I thought the service was very nice and pleasant. There were no hiccups and no issues so overall a good experience.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

Logan airport construction meant that boarding was chaotic crowded and delayed

We where skipped for this flight will not head to Panama until tonight..

Horrible. No TV or any type of entertainment on board. Passwnger listening to/watching stuff on their own phone with no headphones making it noise and uncomfortable for everyone else, little/tiny food portions, old seats, useless wifi (cant access anything). Horrible exlerience especially it was a lomg distance flight with kids.

There should be a warning regarding the quality of the aircraft on the website as we reserve the tickets. There was no TV or any type of screen onboard. The wifi they offer is good for nothing. Traveling 9 hours straight with kids and no type of entetainment was horrible. I wish I had been informed prior so I could buy a ticket with another airline. The food was a joke too. A very tiny portion per passenger. They also charged $100 per checked bag. With United I used to pay $60. So, fair to say that I wont be flying Copa anymore. Their aircraft was super old, outdated, no entertainment, with nearly no onboard food.

Very strict carry on rules meant most of the plane had to gate check their luggage. As is often the case had things that were broken because of this, but I appreciated not being charged to gate check. Otherwise good flight and great crew once on the plane

I liked the meatloaf the chicken was awful but the plane was on time and got there and the staff was nice.

Boarding was quick & efficient; they gave boarding groups due priority; staff & air crew were very cordial and helpful, pleasant flight.

Very happy with my flight. I would definitely recommend it.

The plane doesn’t have screens but you can use your decide for entertainment. Pack a snack too since they don’t offer any, and the meal is pretty small and you will get hungry

the planes are not modern there are no phone chargers

As usual, the flight with normal legroom was not very comfortable, but the second flight was much better because we had paid for extra legroom. It was very nice to check our bags without an extra fee.

Apart of Sky miles delta. And they go everywhere in Brazil

I booked a flight through Kayak to Brazil I have traveled to Brazil several times before Kayak Delta or LATAM never mentioned during the booking or in the pre flight process that the visa requirements to visit Brazil have changed earlier this year. I was unaware of this change and as such never got a visa and was unable to fly from JFK to Sao Paulo Add to this that Delta allowed me to fly from Boston to JFK which they should not have as I didn’t have a visa. It has been a terrible experience and a huge loss of money

I couldn't travel, now I can't get a refund and to change the date I have to pay an absurd fine.

My biggest complaint is the comfort. I am not tall and there was no legroom. It was very uncomfortable. During my transfer in Sao Paola, the flight was slightly delayed so boarding was confusing because there were no instructions in English.

I never got this flight. You sent me to Chile!!! And from Chile I got the other flight to São Paulo... I've arrived 7h latter than I was supposed to arrive because of Delta delays.

The boarding and new bag drop-off process was confusing and causing massive delays.

Very slow boarding, 1 hour late - uncomfortable chairs and crew barely speaking english even at the airport!

4 hours delay, awful food and missed all my connections because of the delay to be rebooks for a flight 10 hrs later back home and never actually make it to my final destination

the flight from Boston to Curitiba was on time actually 30 minutes earlier. latam was not able to unload the luggage for custom checkup in Sao Paulo ii took two and half hours . i missed the flight to Curitiba spend the night in hotel and then flying in the morning to Curitiba

Very unprofessional staff in the checking and boarding. There was no space for my carry-on bag, which is understandable for a full flight. However, the rudeness in answering my questions about my bag were unnecessary. Shaming and threatening a passenger to be left behind was something I had never experienced (I am 57 years old and a Skymiles member) before. At a minimum, the boarding staff (Krystal Mejia and her manager Dee) should undergo further training on cultural sensitivity and professional skills on speaking with passengers. Krystal, just because I have dark hair and “look Latina” does not mean I can speak Spanish. Your assumption and threatening words until the very ending of my boarding (door of the airplane) were not only unnecessary and stressful but something that a passenger should not experience before boarding.

Flight was 2.5 late. Maybe not United’s fault but late none the less. We were late as well on the first leg. WiFi quit working with an hour left.

I would have preferred a flight voucher and to hop on a different flight. Delayed over 6 hours.

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

It was Swiss. Our kosher meals were literally frozen solid and therefore inedible, and the crew didnt care.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

The flight was delayed, they didn’t even have water for the toilets or for drinks

It’s always a great time flying with united airlines.

Very old flight - time to retire it for newer airplanes

2+ hours delayed Outlet in row 12 did not work Tv monitors did not work Lights kept off the entire flight for at 5pm-7pm flight

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

The pilots landing and taking off was very bad on the first flight, the second one taking off was great but landing was also rough

The check in and on the ground experience is very poor. Their online check and trip management is the worst I have ever seen and they have long lines to check in at the airport, technology is glitchy/unusable and have exorbitant baggage fees. The flight itself is fine, although the food is about what you would expect and their was no functioning entertainment for an international flight.

My experience with this flight was extremely negative and resulted in serious financial and personal consequences. The flight departed with a significant delay, which caused me to miss my international connecting flight. As a direct result of this delay — which was entirely beyond my control — I was unable to reach my final destination on time, causing me to lose a previously scheduled hair transplant surgery that had been arranged months in advance. This was not a minor inconvenience. The surgery involved: • A reserved operating room • Medical and technical staff scheduled specifically for that date • Surgical instruments prepared in advance • Strict scheduling that does not allow for easy rescheduling Due to the airline’s delay and poor handling of the situation: • I lost already paid international flight tickets • I was forced to purchase new tickets, incurring duplicate expenses • I spent over six additional hours in airports, under stressful conditions • I incurred unexpected costs for meals and transportation • I lost a medical opportunity that cannot be easily recovered, along with the emotional distress associated with it Although the airline covered one night of hotel accommodation, this did not address the real impact of the delay, nor the significant damages caused by missing a critical medical procedure. The lack of punctuality, planning, and effective solutions reflects a serious lack of responsibility toward passengers, especially when international connections and time-sensitive medical commitments are involved. I do not recommend this airline for travelers with important schedules, medical appointments, or critical connections. In my case, the delay did not merely cause inconvenience — it resulted in the loss of a surgery and substantial financial damage.

I was not able to get on the flight due to delays out of Philadelphia. I arrived in MIA at 10:30pm and there was no one at the GOL Desk. Is there any flight credit available for this flight?

the boarding staff were incredibly officious. our carry-on case was borderline within dimensions but staff were not prepared to show ANY flexibility even though many others with larger carry-on luggage were allowed to board. we were understandably furious but the staff were incredibly disrespectful. we called the supervisor who eventually agreed to look on board the plane to see if there was room for our case (one case between 2 of us) and reluctantly agreed to allow us on. The staff on board were excellent though and realized we had been treated badly and were very helpful both in finding a place for our case, some distance from our seats, and helping us to retrieve it when we landed. We are regular travelers on Gol and have Diamante status and had chosen the better Conforto + seats, so we expected better treatment from the ground staff. Also the cabins are of a size that will only fit 3 cases of normal size with a large gap of about 30cm of wasted space. If our case were deemed to be oversize, which I dispute, the extra 1cm would not have made the slightest difference.

It was really bad. Inexperienced and rude people during check-in in Miami, a small and uncomfortable airplane, and problems with the airline caused me to lose my connection flight in Brasilia. Terrible experience!

Obviously it would be better if we had screens available.

The plane was fine and the crew was very nice. Even though we bought our tickets eight months in advance and had seats reserved, they changed our seats. Instead of being in seats 7E and 7F, we were separated and put in two middle seats away from each other. When checking in, the attendant put us in an exit row together, but 10 rows back from where we had reserved. But you have to be younger than 60 to be in an exit row. So when everyone else boarded we were moved to last row 33, right next to bathrooms.

I missed it because of the delay in the other flights. Attendants in the airport sent me from one side to the other many times due to poor information.

Too much delay in the first two flights, so I lost the connection to the final destination.

Everything you need to know for your flight from Boston to Porto Alegre

Information on your arrival and departure airports