Cheap flights from Boston to Porto Alegre from $494
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Porto Alegre departing on 5/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Deals available from 900+ travel sites.
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.Find the cheapest flights from Boston to Porto Alegre
Cheap round-trip flights
LATAM Airlines flights from Boston to Porto Alegre
Our best LATAM Airlines deals on Boston to Porto Alegre flight tickets
Copa Airlines flights from Boston to Porto Alegre
Our best Copa Airlines deals on Boston to Porto Alegre flight tickets
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 cheapest month to fly to Porto Alegre?
The cheapest month to fly to Porto Alegre from Boston is in September. Flight prices, which tend to average around $512, are often lower during this time because this is during the off-season. If you’re not able to fly to Porto Alegre in September, then July is your next best option. Flight prices from Boston to Porto Alegre during July average around $549.
What is the cheapest day to depart on your flight to Porto Alegre?
Our data shows that Tuesday is the least expensive day to fly to Porto Alegre. Tickets to fly out on this day can be as low as $714. On the other hand, Friday is the most expensive day to depart from Boston because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,701.
What is the cheapest time of day to depart on your flight to Porto Alegre?
Our most recent data shows that the best time of day to fly to Porto Alegre is in the evening. Flights from Boston to Porto Alegre during this time can be as low as $865. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,064 on average. Flights to Porto Alegre from Boston at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
How have Boston to Porto Alegre flight prices changed over time?
As of February 2025, prices for Boston to Porto Alegre flights are approximately 30% cheaper when compared to flights at the same time last year.
When to book flights from Boston to Porto Alegre
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
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 30m, 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?
There are 5 operators available for flights from Boston Logan Intl Airport to Porto Alegre Salgado Filho Airport as of February 2025.
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?
momondo data reveals that the most frequently booked airline on the route from Boston to Porto Alegre is LATAM Airlines, representing 40% of all bookings. The subsequent popular airlines are American Airlines at 29%, Copa Airlines at 19%, and Delta at 6%.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $291 | Free Cancellation | Rating 8.0 8,213 reviews | |||
| PriceFrom $498 | Free Cancellation | Rating 7.5 1,793 reviews | |||
| PriceFrom $510 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $580 | Free Cancellation | Rating 7.6 1,502 reviews | |||
| PriceFrom $685 | Free Cancellation | Rating 7.3 1,064 reviews |
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.