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Cheap flights from Boston to Rio de Janeiro from $303

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Rio de Janeiro departing on 5/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
9:55 am - 8:35 am
BOS
-
SDU
21h 40m
1 stop
LATAM Airlines Logo
8:15 pm - 7:35 am
SDU
-
BOS
12h 20m
1 stop
$610LATAM Airlines
Fri, Apr 10 - Sun, May 31
Air Canada Logo
4:35 pm - 4:45 pm
BOS
-
SDU
23h 10m
2 stops
Air Canada Logo
1:45 pm - 3:56 pm
SDU
-
BOS
27h 11m
2 stops
$626Air Canada
Thu, Apr 9 - Mon, Apr 27
Multiple Airlines Logo
8:45 am - 7:40 am
BOS
-
SDU
21h 55m
2 stops
Multiple Airlines Logo
8:15 pm - 7:35 am
SDU
-
BOS
12h 20m
1 stop
$637Multiple Airlines
Tue, May 5 - Sun, May 17
LATAM Airlines Logo
9:55 am - 1:10 pm
BOS
-
SDU
26h 15m
1 stop
LATAM Airlines Logo
2:55 pm - 7:35 am
SDU
-
BOS
17h 40m
1 stop
$638LATAM Airlines
Fri, Apr 10 - Sun, May 31
Multiple Airlines Logo
8:55 am - 9:25 am
BOS
-
SDU
22h 30m
1 stop
Multiple Airlines Logo
8:05 pm - 1:42 pm
SDU
-
BOS
18h 37m
2 stops
$648Multiple Airlines
Mon, Mar 2 - Mon, Mar 9
Multiple Airlines Logo
6:40 pm - 4:45 pm
BOS
-
SDU
21h 05m
2 stops
Multiple Airlines Logo
3:20 pm - 7:35 am
SDU
-
BOS
17h 15m
1 stop
$650Multiple Airlines
Tue, Apr 21 - Tue, Apr 28
LATAM Airlines Logo
9:55 am - 8:35 am
BOS
-
SDU
21h 40m
1 stop
LATAM Airlines Logo
3:05 pm - 7:35 am
SDU
-
BOS
17h 30m
2 stops
$652LATAM Airlines
Fri, Apr 10 - Sun, May 31
LATAM Airlines Logo
9:55 am - 8:05 am
BOS
-
SDU
21h 10m
2 stops
LATAM Airlines Logo
8:15 pm - 7:35 am
SDU
-
BOS
12h 20m
1 stop
$653LATAM Airlines
Fri, Apr 10 - Sun, May 31
LATAM Airlines Logo
8:55 am - 9:35 am
BOS
-
SDU
22h 40m
1 stop
LATAM Airlines Logo
8:05 pm - 3:09 pm
SDU
-
BOS
20h 04m
2 stops
$662LATAM Airlines
Fri, Mar 6 - Tue, Mar 10
LATAM Airlines Logo
8:55 am - 9:25 am
BOS
-
SDU
22h 30m
1 stop
LATAM Airlines Logo
8:05 pm - 2:54 pm
SDU
-
BOS
19h 49m
2 stops
$663LATAM Airlines
Mon, Mar 2 - Mon, Mar 9

LATAM Airlines flights from Boston to Rio de Janeiro Santos Dumont Airport

Our best LATAM Airlines deals on Boston to Rio de Janeiro Santos Dumont Airport flight tickets
LATAM Airlines
Apr 10
BOS9:55 amBoston Logan Intl
21h 40m
1 stop
SDU8:35 amRio de Janeiro Santos Dumont
May 31
SDU8:15 pmRio de Janeiro Santos Dumont
12h 20m
1 stop
BOS7:35 amBoston Logan Intl
$610
LATAM Airlines
Apr 10
BOS9:55 amBoston Logan Intl
26h 15m
1 stop
SDU1:10 pmRio de Janeiro Santos Dumont
May 31
SDU8:15 pmRio de Janeiro Santos Dumont
12h 20m
1 stop
BOS7:35 amBoston Logan Intl
$638
LATAM Airlines
Apr 10
BOS9:55 amBoston Logan Intl
21h 40m
1 stop
SDU8:35 amRio de Janeiro Santos Dumont
May 31
SDU3:05 pmRio de Janeiro Santos Dumont
17h 30m
2 stops
BOS7:35 amBoston Logan Intl
$652

United Airlines flights from Boston to Rio de Janeiro Santos Dumont Airport

Our best United Airlines deals on Boston to Rio de Janeiro Santos Dumont Airport flight tickets
United Airlines
Feb 25
BOS2:20 pmBoston Logan Intl
24h 25m
2 stops
SDU4:45 pmRio de Janeiro Santos Dumont
Mar 2
SDU1:50 pmRio de Janeiro Santos Dumont
24h 27m
2 stops
BOS12:17 pmBoston Logan Intl
$881
United Airlines
Feb 16
BOS9:47 amBoston Logan Intl
26h 48m
2 stops
SDU2:35 pmRio de Janeiro Santos Dumont
Feb 25
SDU1:50 pmRio de Janeiro Santos Dumont
22h 59m
2 stops
BOS10:49 amBoston Logan Intl
$980
United Airlines
Feb 17
BOS5:35 amBoston Logan Intl
31h 00m
2 stops
SDU2:35 pmRio de Janeiro Santos Dumont
Feb 25
SDU1:50 pmRio de Janeiro Santos Dumont
22h 59m
2 stops
BOS10:49 amBoston Logan Intl
$988

momondo Fare Finder

 
Customize your flight search to find flights from Boston to Rio de Janeiro Santos Dumont Airport 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, momondo users made 832,500 searches. Data last updated February 15, 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

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Fri 4/10

9:55 am-8:35 am

1 stop21h 40m

Rio de Janeiro Santos Dumont

Sun 5/31

8:15 pm-7:35 am

1 stop12h 20m

$610

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Thu 4/9

4:35 pm-4:45 pm

2 stops23h 10m

Rio de Janeiro Santos Dumont

Mon 4/27

1:45 pm-3:56 pm

2 stops27h 11m

$626

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Tue 5/5

8:45 am-7:40 am

2 stops21h 55m

Rio de Janeiro Santos Dumont

Sun 5/17

8:15 pm-7:35 am

1 stop12h 20m

$637

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Fri 4/10

9:55 am-1:10 pm

1 stop26h 15m

Rio de Janeiro Santos Dumont

Sun 5/31

2:55 pm-7:35 am

1 stop17h 40m

$638

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Mon 3/2

8:55 am-9:25 am

1 stop22h 30m

Rio de Janeiro Santos Dumont

Mon 3/9

8:05 pm-1:42 pm

2 stops18h 37m

$648

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Tue 4/21

6:40 pm-4:45 pm

2 stops21h 05m

Rio de Janeiro Santos Dumont

Tue 4/28

3:20 pm-7:35 am

1 stop17h 15m

$650

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Fri 4/10

9:55 am-8:35 am

1 stop21h 40m

Rio de Janeiro Santos Dumont

Sun 5/31

3:05 pm-7:35 am

2 stops17h 30m

$652

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Fri 4/10

9:55 am-8:05 am

2 stops21h 10m

Rio de Janeiro Santos Dumont

Sun 5/31

8:15 pm-7:35 am

1 stop12h 20m

$653

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Fri 3/6

8:55 am-9:35 am

1 stop22h 40m

Rio de Janeiro Santos Dumont

Tue 3/10

8:05 pm-3:09 pm

2 stops20h 04m

$662

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Mon 3/2

8:55 am-9:25 am

1 stop22h 30m

Rio de Janeiro Santos Dumont

Mon 3/9

8:05 pm-2:54 pm

2 stops19h 49m

$663

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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When to book flights from Boston to Rio de Janeiro Santos Dumont Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Rio de Janeiro Santos Dumont Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Boston to Rio de Janeiro Santos Dumont Airport (BOS to SDU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Boston to Rio de Janeiro Santos Dumont Airport

Fastest flight time

16h 32m

Direct flights

None
The fastest flight from Boston to Rio de Janeiro Santos Dumont Airport takes 16h 32m
There are no direct flights from Boston to Rio de Janeiro Santos Dumont Airport. There are no popular flight routes from Boston to Rio de Janeiro Santos Dumont Airport.
Search flight deals

  • How far is Boston Logan Intl to Rio de Janeiro Santos Dumont by plane?

    Boston Logan Intl and Rio de Janeiro Santos Dumont are 4844.9 mi apart from one another. Typically, this will take 16h 32m by plane in normal conditions.

  • When did momondo last update prices for flights from Boston Logan Intl Airport to Rio de Janeiro Santos Dumont Airport?

    Prices for flights from Boston Logan Intl Airport to Rio de Janeiro Santos Dumont Airport are updated daily.

  • How old do you have to be to fly from Boston Logan Intl Airport to Rio de Janeiro Santos Dumont Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Boston Logan Intl Airport to Rio de Janeiro Santos Dumont Airport.

  • What documentation or ID do you need to fly to Rio de Janeiro Santos Dumont Airport?

    The travel and health documents you'll need for your trip to Rio de Janeiro Santos Dumont Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Rio de Janeiro Santos Dumont Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from Boston to Rio de Janeiro Santos Dumont Airport?

    Search flight deals from Boston to Rio de Janeiro Santos Dumont Airport. While viewing offers you’ll have the option to create a Price Alert.

  • How can I save money on flights from Boston to Rio de Janeiro Santos Dumont Airport with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

Why should I use momondo to find a flight deal from Boston to Rio de Janeiro?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Rio de Janeiro from Boston.

Can I find flights from Boston to Rio de Janeiro with flexible booking policies on momondo?

Flights from Boston to Rio de Janeiro with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Boston to Rio de Janeiro?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Rio de Janeiro from Boston.

I’m not ready to book a flight from Boston to Rio de Janeiro right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Boston to Rio de Janeiro now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Rio de Janeiro and let you know when they change.

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