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Santos Dumont

$307+ 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SDU
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September 11, 2025.

Round-trip from

$624
(Air Canada)

One-way from

$307
(Mytrip)

Popular in

December

Cheapest in

October

Average price

$655
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. 7% potential increase in price ($67 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 11, 2025.

This Air Canada deal was found by Cheapflights users on 9/9. 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.
Sun 10/2610:35 amBOS - SDU
2 stops29h 10mAir Canada
Wed 11/121:45 pmSDU - BOS
2 stops33h 42mAir Canada
Deal found 9/9$624
This Air Canada deal was found by Cheapflights users on 9/11. 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.
Tue 9/306:00 amBOS - SDU
2 stops31h 20mAir Canada
Sat 10/1111:30 amSDU - BOS
2 stops24h 59mAir Canada
Deal found 9/11$629
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Sun 10/2610:35 amBOS - SDU
2 stops29h 10mAir Canada
Tue 11/111:45 pmSDU - BOS
2 stops28h 12mAir Canada
Deal found 9/9$630
This Mytrip deal was found by Cheapflights users on 9/8. 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.
Thu 10/308:55 amBOS - SDU
2 stops21h 45mMultiple Airlines
Wed 11/128:15 amSDU - BOS
2 stops24h 20mMultiple Airlines
Deal found 9/8$651
This Mytrip deal was found by Cheapflights users on 9/11. 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.
Tue 11/42:15 pmBOS - SDU
2 stops20h 50mMultiple Airlines
Fri 11/148:15 amSDU - BOS
2 stops24h 20mMultiple Airlines
Deal found 9/11$675
This FlightHub deal was found by Cheapflights users on 9/10. 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 10/271:15 pmBOS - SDU
2 stops19h 10mLATAM Airlines
Sun 11/95:10 pmSDU - BOS
1 stop15h 25mLATAM Airlines
Deal found 9/10$683
This FlightHub deal was found by Cheapflights users on 9/10. 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 11/28:05 pmSDU - BOS
1 stop12h 30mLATAM Airlines
Deal found 9/10$684

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 September 11, 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

Sun 10/26

10:35 am-4:45 pm

2 stops29h 10m

Rio de Janeiro Santos Dumont

Wed 11/12

1:45 pm-9:27 pm

2 stops33h 42m

$624

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Tue 9/30

6:00 am-2:20 pm

2 stops31h 20m

Rio de Janeiro Santos Dumont

Sat 10/11

11:30 am-11:29 am

2 stops24h 59m

$629

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Thu 10/30

8:55 am-7:40 am

2 stops21h 45m

Rio de Janeiro Santos Dumont

Wed 11/12

8:15 am-6:35 am

2 stops24h 20m

$651

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Mon 11/24

8:55 am-7:15 am

1 stop20h 20m

Rio de Janeiro Santos Dumont

Sun 12/7

5:10 pm-6:35 am

1 stop15h 25m

$684

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Wed 10/22

10:20 am-2:20 pm

2 stops27h 00m

Rio de Janeiro Santos Dumont

Wed 11/12

1:45 pm-9:27 pm

2 stops33h 42m

$699

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Thu 10/30

9:55 am-9:25 am

1 stop22h 30m

Rio de Janeiro Santos Dumont

Wed 11/12

2:00 pm-10:20 am

2 stops22h 20m

$716

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Tue 10/28

1:15 pm-9:25 am

2 stops19h 10m

Rio de Janeiro Santos Dumont

Sun 11/2

3:15 pm-6:35 am

2 stops17h 20m

$717

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Fri 10/24

7:35 am-9:35 am

2 stops25h 00m

Rio de Janeiro Santos Dumont

Mon 11/10

8:05 pm-10:20 am

2 stops16h 15m

$718

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Thu 11/27

7:55 am-1:15 pm

2 stops27h 20m

$308

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Mon 10/13

8:24 pm-10:25 pm

2 stops25h 01m

$320

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 15 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 September 11, 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?

    Air Canada can get you from Boston to Rio de Janeiro Santos Dumont Airport in just under 29h 10m. 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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