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Santos Dumont

$303+ 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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SDU
Aug 24 — Aug 311
Sun 8/24
Sun 8/31
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 August 19, 2025.

Round-trip from

$559
(KAYAK)

One-way from

$303
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$881
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 ($100 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($49 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 19, 2025.

This KAYAK deal was found by Cheapflights users on 8/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/276:22 pmBOS - SDU
2 stops17h 53mLATAM Airlines
Sun 11/98:05 pmSDU - BOS
1 stop12h 30mLATAM Airlines
Deal found 8/18$559
This KAYAK deal was found by Cheapflights users on 8/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/135:00 pmBOS - SDU
2 stops20h 00mLATAM Airlines
Sun 10/263:15 pmSDU - BOS
2 stops17h 20mLATAM Airlines
Deal found 8/18$564
This SmartFares deal was found by Cheapflights users on 8/17. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/319:55 amBOS - SDU
1 stop22h 40mLATAM Airlines
Tue 11/48:05 pmSDU - BOS
1 stop12h 30mLATAM Airlines
Deal found 8/17$569
This Expedia deal was found by Cheapflights users on 8/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/38:55 amBOS - SDU
1 stop22h 40mLATAM Airlines
Sun 11/163:15 pmSDU - BOS
2 stops17h 20mLATAM Airlines
Deal found 8/18$570
This SmartFares deal was found by Cheapflights users on 8/18. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/108:55 amBOS - SDU
1 stop22h 40mLATAM Airlines
Mon 11/249:20 pmSDU - BOS
2 stops35h 15mLATAM Airlines
Deal found 8/18$580
This SmartFares deal was found by Cheapflights users on 8/17. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/309:55 amBOS - SDU
1 stop26h 20mLATAM Airlines
Mon 11/32:00 pmSDU - BOS
2 stops27h 26mLATAM Airlines
Deal found 8/17$590
This SmartFares deal was found by Cheapflights users on 8/17. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/78:55 amBOS - SDU
1 stop22h 40mLATAM Airlines
Sat 11/152:00 pmSDU - BOS
2 stops46h 24mLATAM Airlines
Deal found 8/17$599
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/209:55 amBOS - SDU
1 stop20h 45mLATAM Airlines
Sun 11/25:10 pmSDU - BOS
1 stop15h 25mLATAM Airlines
Deal found 8/18$600
This CheapOair deal was found by Cheapflights users on 8/17. 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 9/106:00 amBOS - SDU
2 stops31h 20mAir Canada
Wed 9/1711:25 amSDU - BOS
2 stops23h 05mAir Canada
Deal found 8/17$623
This Cheapflightsfares deal was found by Cheapflights users on 8/18. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/69:55 amBOS - SDU
1 stop22h 40mLATAM Airlines
Sun 10/192:20 pmSDU - BOS
1 stop18h 15mLATAM Airlines
Deal found 8/18$625
This Orbitz deal was found by Cheapflights users on 8/18. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/176:30 pmBOS - SDU
2 stops18h 50mMultiple Airlines
Mon 9/2211:25 amSDU - BOS
2 stops23h 05mMultiple Airlines
Deal found 8/18$628

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 August 19, 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 10/27

6:22 pm-1:15 pm

2 stops17h 53m

Rio de Janeiro Santos Dumont

Sun 11/9

8:05 pm-6:35 am

1 stop12h 30m

$559

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Mon 10/13

5:00 pm-2:00 pm

2 stops20h 00m

Rio de Janeiro Santos Dumont

Sun 10/26

3:15 pm-7:35 am

2 stops17h 20m

$564

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Fri 10/31

9:55 am-9:35 am

1 stop22h 40m

Rio de Janeiro Santos Dumont

Tue 11/4

8:05 pm-6:35 am

1 stop12h 30m

$569

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Mon 11/17

5:00 pm-1:15 pm

2 stops18h 15m

Rio de Janeiro Santos Dumont

Sun 11/30

8:05 pm-10:24 am

2 stops16h 19m

$569

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Mon 11/3

8:55 am-9:35 am

1 stop22h 40m

Rio de Janeiro Santos Dumont

Sun 11/16

3:15 pm-6:35 am

2 stops17h 20m

$570

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Mon 11/10

8:55 am-9:35 am

1 stop22h 40m

Rio de Janeiro Santos Dumont

Mon 11/24

9:20 pm-6:35 am

2 stops35h 15m

$580

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Thu 10/30

9:55 am-1:15 pm

1 stop26h 20m

Rio de Janeiro Santos Dumont

Mon 11/3

2:00 pm-3:26 pm

2 stops27h 26m

$590

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Fri 11/7

8:55 am-9:35 am

1 stop22h 40m

Rio de Janeiro Santos Dumont

Sat 11/15

2:00 pm-10:24 am

2 stops46h 24m

$599

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Thu 10/23

9:55 am-1:25 pm

1 stop26h 30m

Rio de Janeiro Santos Dumont

Mon 10/27

8:05 pm-3:26 pm

2 stops44h 21m

$599

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Mon 10/20

9:55 am-7:40 am

1 stop20h 45m

Rio de Janeiro Santos Dumont

Sun 11/2

5:10 pm-6:35 am

1 stop15h 25m

$600

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Showing 1-10 of 21 results
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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 August 19, 2025.

It’s typically best to fly out from Boston to Rio de Janeiro Santos Dumont Airport in the afternoon. Doing so could potentially save you 24% on the flight price compared to flying at noon, 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 17h 53m. 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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