HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Santos Dumont

$243+ Cheap flights from Boston (BOS) to Santos Dumont, Brazil (SDU)

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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SDU
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Boston to Santos Dumont with Cheapflights

1. Tell us where you want to go

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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Boston to Santos Dumont

Cheapest flights from Boston to Santos Dumont
Explore the most affordable flight options available from Boston to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2026.

This Trip.com deal was found by Cheapflights users on 1/18. 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.
Thu 3/57:55 am
BOS
-
SDU
2 stops21h 45m
Multiple Airlines
Thu 3/128:05 pm
SDU
-
BOS
1 stop12h 30m
Multiple Airlines
Deal found 1/18$544
This Trip.com deal was found by Cheapflights users on 1/18. 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.
Tue 2/247:55 am
BOS
-
SDU
2 stops30h 45m
Multiple Airlines
Tue 3/38:05 pm
SDU
-
BOS
1 stop12h 30m
Multiple Airlines
Deal found 1/18$565
This Kiwi.com deal was found by Cheapflights users on 1/18. 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 3/99:55 am
BOS
-
SDU
1 stop20h 45m
Multiple Airlines
Tue 3/241:45 pm
SDU
-
BOS
1 stop18h 50m
Multiple Airlines
Deal found 1/18$579
This Gotogate deal was found by Cheapflights users on 1/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/28:55 am
BOS
-
SDU
1 stop22h 30m
LATAM Airlines
Sun 2/84:55 pm
SDU
-
BOS
1 stop15h 40m
LATAM Airlines
Deal found 1/18$609
This Gotogate deal was found by Cheapflights users on 1/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/178:55 am
BOS
-
SDU
2 stops21h 45m
Multiple Airlines
Mon 3/2310:15 am
SDU
-
BOS
2 stops46h 20m
Multiple Airlines
Deal found 1/18$620
This Gotogate deal was found by Cheapflights users on 1/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/28:55 am
BOS
-
SDU
1 stop20h 20m
LATAM Airlines
Sun 3/158:55 am
SDU
-
BOS
1 stop23h 40m
LATAM Airlines
Deal found 1/19$623
This FlightHub deal was found by Cheapflights users on 1/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/235:30 am
BOS
-
SDU
2 stops31h 05m
Air Canada
Wed 1/2811:20 am
SDU
-
BOS
2 stops24h 12m
Air Canada
Deal found 1/20$632
This Gotogate deal was found by Cheapflights users on 1/18. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/239:55 am
BOS
-
SDU
1 stop22h 30m
LATAM Airlines
Wed 3/259:20 pm
SDU
-
BOS
2 stops35h 15m
LATAM Airlines
Deal found 1/18$635
This Air Canada deal was found by Cheapflights users on 1/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/41:00 pm
BOS
-
SDU
2 stops27h 45m
Air Canada
Wed 4/221:45 pm
SDU
-
BOS
2 stops26h 07m
Air Canada
Deal found 1/18$637

Find flight deals from Boston to Santos Dumont

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Santos Dumont (SDU). 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 January 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$544
(Trip.com)

One-way from

$243
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$705
Provider with most accurate pricing for Boston Logan Intl-Rio de Janeiro Santos Dumont flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Rio de Janeiro Santos Dumont flights.
Search Deals
From Boston Logan Intl to Rio de Janeiro Santos Dumont
Search Deals
One-way flight from Boston Logan Intl to Rio de Janeiro Santos Dumont
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($55 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Boston to Santos Dumont 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 January 20, 2026.
Use the filters below to find and compare flights from Boston to Rio de Janeiro Santos Dumont Airport that are best for you.

Fly from

Boston

Fly to

Santos Dumont

Route

Depart

Return

Price

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Mon 3/2

8:55 am-7:15 am

1 stop20h 20m

Rio de Janeiro Santos Dumont

Sun 3/15

8:55 am-7:35 am

1 stop23h 40m

$623

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Fri 1/23

5:30 am-2:35 pm

2 stops31h 05m

Rio de Janeiro Santos Dumont

Wed 1/28

11:20 am-9:32 am

2 stops24h 12m

$632

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Mon 3/2

6:10 pm-10:25 pm

2 stops26h 15m

Rio de Janeiro Santos Dumont

Sun 3/15

11:50 am-7:35 am

2 stops20h 45m

$667

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Fri 3/20

6:40 pm-8:15 pm

2 stops24h 35m

Rio de Janeiro Santos Dumont

Tue 3/24

8:05 pm-7:35 am

1 stop12h 30m

$677

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Fri 3/20

9:55 am-7:25 am

1 stop20h 30m

Rio de Janeiro Santos Dumont

Tue 3/24

8:05 pm-7:35 am

1 stop12h 30m

$680

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Sun 4/5

9:55 am-8:35 am

1 stop21h 40m

Rio de Janeiro Santos Dumont

Sat 4/25

8:15 pm-7:35 am

1 stop12h 20m

$706

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Thu 4/9

9:55 am-8:35 am

1 stop21h 40m

Rio de Janeiro Santos Dumont

Wed 4/22

8:20 pm-7:35 am

1 stop12h 15m

$706

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Sun 4/5

9:55 am-8:35 am

1 stop21h 40m

Rio de Janeiro Santos Dumont

Thu 4/23

8:20 pm-7:35 am

1 stop12h 15m

$706

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Tue 4/7

3:29 pm-1:10 pm

2 stops20h 41m

Rio de Janeiro Santos Dumont

Thu 4/23

8:20 pm-7:35 am

1 stop12h 15m

$710

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Tue 4/7

5:15 pm-1:10 pm

2 stops18h 55m

Rio de Janeiro Santos Dumont

Sat 4/25

8:15 pm-7:35 am

1 stop12h 20m

$710

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/17

Showing 1-10 of 19 results
1
2

Compare providers for flights from Boston to Santos Dumont

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 Santos Dumont in January.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Rio de Janeiro Santos Dumont Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Rio de Janeiro Santos Dumont Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Rio de Janeiro Santos Dumont Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Rio de Janeiro Santos Dumont Airport flights, Cheapflights users trust AranGrant the most. AranGrant 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-Rio de Janeiro Santos Dumont Airport 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 Santos Dumont

Have a flexible travel schedule? Discover the best time to fly to Santos Dumont from Boston with our price prediction graph.
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.

Related info for your journey

Find useful and relevant information for your journey from Boston to Santos Dumont. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Boston to Rio de Janeiro Santos Dumont?

    If you book a flight to Rio de Janeiro Santos Dumont from Boston, you will be flying from Logan Intl, which is the city’s only airport. Boston Logan Intl (BOS) is located 2.6 mi from the center of Boston. There are 0 flights from Logan Intl to Rio de Janeiro Santos Dumont per day from 0 different airlines.

  • How long is the flight from Boston to Rio de Janeiro Santos Dumont Airport?

    LATAM Airlines and Air Canada can get you from Boston to Rio de Janeiro Santos Dumont Airport in just under 20h 20m. Your travel time can differ by up to 10h 45m. There are 4844 mi between Boston and Rio de Janeiro Santos Dumont Airport. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Boston to Santos Dumont that include hotel bookings?

    Yes. In addition to deals on Boston to Santos Dumont flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Boston to Santos Dumont?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Santos Dumont.

  • Can I find deals for business class flights from Boston to Santos Dumont?

    Yes. Cheapflights offers flight deals from Boston to Santos Dumont by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Boston to Santos Dumont

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Rio de Janeiro–Galeão Intl flights
Hartford to Rio de Janeiro–Galeão Intl flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.