Cheap flights from Boston to Rio de Janeiro from $344

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 2/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from Boston to Rio de Janeiro

Cheap round-trip flights

Enter your travel dates to find the best prices.
LATAM Airlines Logo
8:55 am - 9:20 amBOS-SDU
22h 25m1 stop
LATAM Airlines Logo
9:20 pm - 6:35 amSDU-BOS
35h 15m2 stops
$659LATAM Airlines
Find Deal
Wed, Nov 12 - Sat, Nov 15
LATAM Airlines Logo
8:55 am - 9:20 amBOS-SDU
22h 25m1 stop
LATAM Airlines Logo
6:50 am - 6:35 amSDU-BOS
25h 45m1 stop
$663LATAM Airlines
Find Deal
Wed, Nov 12 - Sun, Nov 16
Multiple Airlines Logo
5:23 pm - 7:10 amBOS-SDU
35h 47m3 stops
Multiple Airlines Logo
5:40 pm - 4:28 pmSDU-BOS
24h 48m2 stops
$678Multiple Airlines
Find Deal
Mon, Jan 26 - Sat, Jan 31
Multiple Airlines Logo
5:23 pm - 7:10 amBOS-SDU
35h 47m3 stops
Multiple Airlines Logo
3:50 pm - 4:28 pmSDU-BOS
26h 38m3 stops
$684Multiple Airlines
Find Deal
Mon, Jan 26 - Sat, Jan 31
LATAM Airlines Logo
5:13 pm - 6:45 pmBOS-SDU
23h 32m2 stops
LATAM Airlines Logo
8:45 am - 6:35 amSDU-BOS
23h 50m2 stops
$713LATAM Airlines
Find Deal
Mon, Dec 8 - Wed, Jan 28
LATAM Airlines Logo
8:55 am - 7:15 amBOS-SDU
20h 20m1 stop
LATAM Airlines Logo
9:00 am - 6:35 amSDU-BOS
23h 35m1 stop
$714LATAM Airlines
Find Deal
Mon, Nov 17 - Wed, Dec 3
Multiple Airlines Logo
8:55 am - 7:45 amBOS-SDU
20h 50m1 stop
Multiple Airlines Logo
7:35 am - 10:03 amSDU-BOS
28h 28m2 stops
$716Multiple Airlines
Find Deal
Mon, Nov 17 - Wed, Dec 3
Multiple Airlines Logo
10:56 am - 10:10 pmBOS-SDU
33h 14m2 stops
Multiple Airlines Logo
8:05 pm - 6:35 amSDU-BOS
12h 30m1 stop
$721Multiple Airlines
Find Deal
Wed, Dec 10 - Thu, Feb 26
LATAM Airlines Logo
5:00 pm - 5:00 pmBOS-SDU
22h 00m2 stops
LATAM Airlines Logo
3:35 pm - 10:20 amSDU-BOS
20h 45m2 stops
$723LATAM Airlines
Find Deal
Sun, Dec 7 - Sat, Feb 28
United Airlines Logo
9:40 am - 4:35 pmBOS-SDU
28h 55m2 stops
United Airlines Logo
2:50 pm - 2:17 pmSDU-BOS
25h 27m2 stops
$834United Airlines
Find Deal
Sun, Dec 7 - Sun, Feb 1

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
Dec 7
BOS9:40 amBoston Logan Intl
28h 55m
2 stops
SDU4:35 pmRio de Janeiro Santos Dumont
Feb 1
SDU2:50 pmRio de Janeiro Santos Dumont
25h 27m
2 stops
BOS2:17 pmBoston Logan Intl
United Airlines
Nov 20
BOS2:21 pmBoston Logan Intl
24h 19m
2 stops
SDU4:40 pmRio de Janeiro Santos Dumont
Dec 7
SDU2:50 pmRio de Janeiro Santos Dumont
21h 59m
2 stops
BOS10:49 amBoston Logan Intl

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
Nov 12
BOS8:55 amBoston Logan Intl
22h 25m
1 stop
SDU9:20 amRio de Janeiro Santos Dumont
Nov 15
SDU9:20 pmRio de Janeiro Santos Dumont
35h 15m
2 stops
BOS6:35 amBoston Logan Intl
LATAM Airlines
Nov 12
BOS8:55 amBoston Logan Intl
22h 25m
1 stop
SDU9:20 amRio de Janeiro Santos Dumont
Nov 16
SDU6:50 amRio de Janeiro Santos Dumont
25h 45m
1 stop
BOS6:35 amBoston Logan Intl
LATAM Airlines
Dec 8
BOS5:13 pmBoston Logan Intl
23h 32m
2 stops
SDU6:45 pmRio de Janeiro Santos Dumont
Jan 28
SDU8:45 amRio de Janeiro Santos Dumont
23h 50m
2 stops
BOS6:35 amBoston Logan Intl

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 November 6, 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

Fly to

Route

Depart

Return

Price

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Wed 11/12

8:55 am-9:20 am

1 stop22h 25m

Rio de Janeiro Santos Dumont

Sat 11/15

9:20 pm-6:35 am

2 stops35h 15m

$659

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Wed 11/12

8:55 am-9:20 am

1 stop22h 25m

Rio de Janeiro Santos Dumont

Sun 11/16

6:50 am-6:35 am

1 stop25h 45m

$663

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

Mon 1/26

5:23 pm-7:10 am

3 stops35h 47m

Rio de Janeiro Santos Dumont

Sat 1/31

3:50 pm-4:28 pm

3 stops26h 38m

$684

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Mon 12/8

5:13 pm-6:45 pm

2 stops23h 32m

Rio de Janeiro Santos Dumont

Wed 1/28

8:45 am-6:35 am

2 stops23h 50m

$713

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Mon 11/17

8:55 am-7:15 am

1 stop20h 20m

Rio de Janeiro Santos Dumont

Wed 12/3

9:00 am-6:35 am

1 stop23h 35m

$714

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Mon 11/17

8:55 am-7:45 am

1 stop20h 50m

Rio de Janeiro Santos Dumont

Wed 12/3

7:35 am-10:03 am

2 stops28h 28m

$716

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Wed 12/10

10:56 am-10:10 pm

2 stops33h 14m

Rio de Janeiro Santos Dumont

Thu 2/26

8:05 pm-6:35 am

1 stop12h 30m

$721

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

Sat 2/28

3:35 pm-10:20 am

2 stops20h 45m

$723

BostonRio de Janeiro

BOS - SDU

BOSSDU

Boston Logan Intl

Sun 12/7

9:40 am-4:35 pm

2 stops28h 55m

Rio de Janeiro Santos Dumont

Sun 2/1

2:50 pm-2:17 pm

2 stops25h 27m

$834

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Rio de Janeiro from

How to get the cheapest flight ticket from Boston to Rio de Janeiro Santos Dumont Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Rio de Janeiro Santos Dumont Airport?

On average, the least expensive day to fly to Rio de Janeiro Santos Dumont Airport from Boston is on a Friday. momondo users have found tickets for Friday departures for as low as $962. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from Boston because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,187.

What is the cheapest time of day to depart on your flight to Rio de Janeiro Santos Dumont Airport?

Flying to Rio de Janeiro Santos Dumont Airport from Boston in the evening is the least expensive time of day to depart. momondo users have found prices as low as $919 when looking at flights departing in the evening. Try not to purchase tickets in the afternoon because they tend to be around $1,207. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

Direct flights

None
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.
  • 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 19h 18m 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.

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.

An easier way to manage your Rio de Janeiro Santos Dumont Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 12/6
Sat 12/13

Find better results for your trip to Rio de Janeiro

Popular cities in Brazil

Popular flights according to clicks in the last 7 days on momondo