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Santos Dumont

$346+ 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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SDU
Jul 2 — Jul 91
Thu 7/2
Thu 7/9
1 adult, Economy
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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 June 2, 2026.

This Delta deal was found by Cheapflights users on 5/31. 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 9/69:55 am
BOS
-
SDU
1 stop21h 40m
Delta
Wed 9/168:15 pm
SDU
-
BOS
1 stop12h 20m
Delta
Deal found 5/31$689
This Trip.com deal was found by Cheapflights users on 5/28. 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.
Fri 10/169:55 am
BOS
-
SDU
1 stop26h 15m
LATAM Airlines
Tue 10/208:15 pm
SDU
-
BOS
1 stop12h 20m
LATAM Airlines
Deal found 5/28$690
This Trip.com deal was found by Cheapflights users on 5/29. 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.
Mon 11/98:55 am
BOS
-
SDU
1 stop26h 15m
LATAM Airlines
Thu 11/121:55 pm
SDU
-
BOS
1 stop18h 40m
LATAM Airlines
Deal found 5/29$693
This Trip.com deal was found by Cheapflights users on 5/31. 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 9/169:55 am
BOS
-
SDU
1 stop26h 15m
LATAM Airlines
Wed 9/238:15 pm
SDU
-
BOS
1 stop12h 20m
LATAM Airlines
Deal found 5/31$695
This Trip.com deal was found by Cheapflights users on 5/28. 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.
Sun 11/88:55 am
BOS
-
SDU
1 stop26h 15m
LATAM Airlines
Sat 11/146:30 am
SDU
-
BOS
1 stop26h 05m
LATAM Airlines
Deal found 5/28$696
This Delta deal was found by Cheapflights users on 5/31. 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 9/109:55 am
BOS
-
SDU
1 stop21h 40m
Delta
Mon 9/148:15 pm
SDU
-
BOS
2 stops16h 00m
Delta
Deal found 5/31$699
This LATAM Airlines deal was found by Cheapflights users on 5/29. 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.
Sun 11/87:00 am
BOS
-
SDU
2 stops23h 35m
LATAM Airlines
Wed 11/118:15 pm
SDU
-
BOS
2 stops20h 26m
LATAM Airlines
Deal found 5/29$703
This LATAM Airlines deal was found by Cheapflights users on 6/1. 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.
Thu 8/2710:16 am
BOS
-
SDU
2 stops24h 04m
LATAM Airlines
Mon 9/75:45 pm
SDU
-
BOS
2 stops22h 02m
LATAM Airlines
Deal found 6/1$709
This Trip.com deal was found by Cheapflights users on 6/1. 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 7/1510:00 am
BOS
-
SDU
1 stop26h 10m
LATAM Airlines
Tue 7/214:40 pm
SDU
-
BOS
1 stop15h 55m
LATAM Airlines
Deal found 6/1$716
This Cheapflightsfares deal was found by Cheapflights users on 5/31. 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.
Wed 9/239:55 am
BOS
-
SDU
1 stop21h 40m
LATAM Airlines
Mon 9/288:40 pm
SDU
-
BOS
2 stops27h 50m
LATAM Airlines
Deal found 5/31$732

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 June 2, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$689
(Delta)

One-way from

$346
(Booking.com)

Popular in

December

Cheapest in

October

Average price

$883
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 ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 2, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Wed 8/19

7:20 am-8:35 am

2 stops24h 15m

Rio de Janeiro Santos Dumont

Wed 8/26

1:55 pm-3:22 pm

2 stops26h 27m

$750
Quickest round-trip

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Sat 6/20

12:25 pm-8:35 am

2 stops19h 10m

Rio de Janeiro Santos Dumont

Fri 6/26

8:15 pm-12:14 pm

2 stops16h 59m

$960

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Thu 6/11

5:47 am-4:45 pm

2 stops33h 58m

Rio de Janeiro Santos Dumont

Wed 6/17

1:50 pm-1:14 am

2 stops36h 24m

$1,055

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Tue 7/21

5:05 pm-1:10 pm

2 stops19h 05m

Rio de Janeiro Santos Dumont

Wed 7/29

6:15 am-11:33 pm

2 stops18h 18m

$1,090

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Fri 7/24

5:10 am-12:25 pm

2 stops30h 15m

Rio de Janeiro Santos Dumont

Thu 8/27

8:50 pm-11:26 pm

2 stops27h 36m

$1,105

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Sun 6/21

9:30 am-4:45 pm

2 stops30h 15m

Rio de Janeiro Santos Dumont

Sun 6/28

2:50 pm-4:38 pm

2 stops26h 48m

$1,122

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Mon 6/29

9:55 am-8:35 am

1 stop21h 40m

Rio de Janeiro Santos Dumont

Mon 7/6

8:15 pm-11:33 pm

2 stops28h 18m

$1,159

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Sun 7/26

3:15 pm-10:15 pm

2 stops30h 00m

Rio de Janeiro Santos Dumont

Sat 8/15

6:05 am-11:26 pm

2 stops18h 21m

$1,165

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Mon 6/15

7:20 am-1:10 pm

2 stops28h 50m

Rio de Janeiro Santos Dumont

Fri 6/26

8:15 pm-12:14 pm

2 stops16h 59m

$1,181

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Sat 6/27

6:43 pm-5:45 pm

2 stops22h 02m

Rio de Janeiro Santos Dumont

Tue 7/7

1:45 pm-10:20 am

2 stops21h 35m

$1,215

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/31

Showing 1-10 of 21 resultsSorted by cheapest first
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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 June.
ProviderPrice AccuracyTrust Score*
OvagoPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*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 Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Boston-Rio de Janeiro Santos Dumont Airport flight deals on Cheapflights vs. Ovago >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 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-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, Delta, and United Airlines can get you from Boston to Rio de Janeiro Santos Dumont Airport in just under 19h 10m. Your travel time can differ by up to 14h 48m. 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.

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