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Santos Dumont

$357+ 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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SDU
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
1 adult, Economy
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Cheap 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 November 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$628
(FlightHub)

One-way from

$357
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$873
Provider with most accurate pricing for Boston Logan Intl-Rio de Janeiro Santos Dumont flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Rio de Janeiro Santos Dumont flights.
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From Boston Logan Intl to Rio de Janeiro Santos Dumont
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One-way flight from Boston Logan Intl to Rio de Janeiro Santos Dumont
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Highest demand for flights based on searches. 10% potential increase in price ($99 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find 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 November 5, 2025.

This KAYAK deal was found by Cheapflights users on 11/4. 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.
Sun 12/75:00 pmBOS - SDU
2 stops22h 00mLATAM Airlines
Tue 3/38:05 pmSDU - BOS
1 stop12h 30mLATAM Airlines
Deal found 11/4$713
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 12/1010:56 amBOS - SDU
2 stops33h 14mMultiple Airlines
Thu 2/268:05 pmSDU - BOS
1 stop12h 30mMultiple Airlines
Deal found 11/4$721
This KAYAK deal was found by Cheapflights users on 11/4. 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.
Sun 12/75:00 pmBOS - SDU
2 stops22h 00mLATAM Airlines
Sat 2/283:35 pmSDU - BOS
2 stops20h 45mLATAM Airlines
Deal found 11/4$723
This Booking.com deal was found by Cheapflights users on 11/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/198:55 amBOS - SDU
1 stop22h 30mLATAM Airlines
Thu 11/208:05 pmSDU - BOS
1 stop12h 30mLATAM Airlines
Deal found 11/3$728
This Mytrip deal was found by Cheapflights users on 11/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/711:08 amBOS - SDU
2 stops23h 52mMultiple Airlines
Fri 12/121:45 pmSDU - BOS
2 stops18h 50mMultiple Airlines
Deal found 11/3$734
This CheapOair deal was found by Cheapflights users on 11/4. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/128:55 amBOS - SDU
1 stop22h 30mLATAM Airlines
Fri 11/149:20 pmSDU - BOS
2 stops59h 15mLATAM Airlines
Deal found 11/4$776
This CheapOair deal was found by Cheapflights users on 11/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/273:05 pmBOS - SDU
2 stops20h 10mLATAM Airlines
Thu 12/48:05 pmSDU - BOS
1 stop12h 30mLATAM Airlines
Deal found 11/3$778
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 12/87:34 amBOS - SDU
2 stops22h 01mMultiple Airlines
Thu 2/268:05 pmSDU - BOS
1 stop12h 30mMultiple Airlines
Deal found 11/4$798
This Mytrip deal was found by Cheapflights users on 11/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/811:08 amBOS - SDU
3 stops33h 17mMultiple Airlines
Sun 3/18:25 pmSDU - BOS
2 stops29h 23mMultiple Airlines
Deal found 11/4$804
This KAYAK deal was found by Cheapflights users on 11/3. 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.
Sat 11/291:10 pmBOS - SDU
2 stops22h 10mLATAM Airlines
Sun 12/711:50 amSDU - BOS
2 stops20h 45mLATAM Airlines
Deal found 11/3$807
This KAYAK deal was found by Cheapflights users on 11/4. 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.
Sun 12/75:00 pmBOS - SDU
2 stops22h 00mLATAM Airlines
Sun 3/18:55 amSDU - BOS
1 stop23h 40mLATAM Airlines
Deal found 11/4$812

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 November 5, 2025.
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 1/26

5:23 pm-7:10 am

3 stops35h 47m

Rio de Janeiro Santos Dumont

Sat 1/31

5:40 pm-4:28 pm

2 stops24h 48m

$678

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Tue 2/3

1:00 pm-12:35 pm

2 stops21h 35m

Rio de Janeiro Santos Dumont

Sun 2/15

8:05 pm-6:35 am

1 stop12h 30m

$713

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Tue 2/3

1:00 pm-12:35 pm

2 stops21h 35m

Rio de Janeiro Santos Dumont

Sun 2/8

3:15 pm-6:35 am

2 stops17h 20m

$713

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Wed 11/12

8:55 am-9:25 am

1 stop22h 30m

Rio de Janeiro Santos Dumont

Fri 11/14

9:20 pm-6:35 am

2 stops59h 15m

$776

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Mon 12/8

11:08 am-10:25 pm

3 stops33h 17m

Rio de Janeiro Santos Dumont

Sun 3/1

8:25 pm-11:48 pm

2 stops29h 23m

$804

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Sun 12/7

5:00 pm-5:00 pm

2 stops22h 00m

Rio de Janeiro Santos Dumont

Fri 2/27

6:10 am-10:59 pm

2 stops18h 49m

$822

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Tue 2/3

9:30 am-2:20 pm

2 stops26h 50m

Rio de Janeiro Santos Dumont

Sun 2/15

2:50 pm-10:36 am

2 stops21h 46m

$834

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Wed 1/28

3:43 pm-4:55 pm

2 stops23h 12m

Rio de Janeiro Santos Dumont

Sun 2/1

8:05 pm-6:35 am

1 stop12h 30m

$867

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Sat 1/31

6:17 pm-10:25 pm

2 stops26h 08m

Rio de Janeiro Santos Dumont

Wed 2/11

2:00 pm-6:35 am

1 stop18h 35m

$912

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Thu 11/20

1:10 pm-1:15 pm

2 stops22h 05m

Rio de Janeiro Santos Dumont

Sun 12/7

2:00 pm-6:35 am

1 stop18h 35m

$913

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 18 results
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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 November.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Boston-Rio de Janeiro Santos Dumont Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

Cheapflights Insights

Everything you need to know about your flight from Boston to Rio de Janeiro Santos Dumont Airport

What is the cheapest time of day to fly from BOS to SDU?

Find hourly flight availability from Boston to Santos Dumont. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 5, 2025.

It’s typically best to fly out from Boston to Rio de Janeiro Santos Dumont Airport in the evening. Doing so could potentially save you 23% on the flight price compared to flying in the afternoon, which is usually more expensive.

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 can get you from Boston to Rio de Janeiro Santos Dumont Airport in just under 21h 35m. Your travel time can differ by up to . There are 4844 mi between Boston and Rio de Janeiro Santos Dumont Airport.

  • 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

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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
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