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Cheap flights from Washington, D.C. to Rio de Janeiro from $259

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Rio de Janeiro departing on 12/7. 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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Find the cheapest flights from Washington, D.C. to Rio de Janeiro

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:29 am - 4:45 pmBWI-SDU
27h 16m3 stops
Multiple Airlines Logo
7:45 am - 3:47 pmSDU-BWI
34h 02m3 stops
$588Multiple Airlines
Find Deal
Wed, Nov 12 - Tue, Nov 18
LATAM Airlines Logo
2:10 pm - 9:35 amBWI-SDU
18h 25m2 stops
LATAM Airlines Logo
3:40 pm - 2:47 pmSDU-BWI
24h 07m2 stops
$599LATAM Airlines
Find Deal
Fri, Apr 3 - Wed, Apr 22
Delta Logo
12:05 pm - 9:35 amDCA-SDU
20h 30m2 stops
Delta Logo
8:20 pm - 2:05 pmSDU-DCA
18h 45m2 stops
$600Delta
Find Deal
Sat, Apr 11 - Mon, Apr 20
Air Canada Logo
4:10 pm - 2:20 pmDCA-SDU
21h 10m2 stops
Air Canada Logo
11:25 am - 9:53 pmSDU-DCA
35h 28m2 stops
$623Air Canada
Find Deal
Wed, Apr 1 - Wed, Apr 22
Air Canada Logo
9:55 am - 2:20 pmIAD-SDU
27h 25m2 stops
Air Canada Logo
11:25 am - 1:01 pmSDU-IAD
26h 36m2 stops
$623Air Canada
Find Deal
Wed, Apr 1 - Thu, Apr 23
Delta Logo
2:55 pm - 9:25 amDCA-SDU
17h 30m2 stops
Delta Logo
8:20 pm - 2:06 pmSDU-DCA
18h 46m2 stops
$699Delta
Find Deal
Thu, Mar 26 - Sun, Apr 5
United Airlines Logo
10:30 pm - 4:40 pmIAD-SDU
16h 10m1 stop
United Airlines Logo
1:45 pm - 6:35 amSDU-IAD
18h 50m1 stop
$723United Airlines
Find Deal
Sun, Nov 9 - Mon, Nov 17
GOL Logo
3:39 pm - 4:55 pmDCA-SDU
24h 16m2 stops
GOL Logo
8:25 pm - 10:00 pmSDU-DCA
26h 35m2 stops
$735GOL
Find Deal
Wed, Mar 18 - Sun, Mar 22
GOL Logo
3:39 pm - 4:55 pmDCA-SDU
24h 16m2 stops
GOL Logo
6:00 am - 10:00 pmSDU-DCA
17h 00m2 stops
$736GOL
Find Deal
Wed, Mar 11 - Sun, Mar 15
United Airlines Logo
6:00 am - 4:45 pmBWI-SDU
32h 45m2 stops
United Airlines Logo
1:45 pm - 11:32 amSDU-BWI
23h 47m2 stops
$739United Airlines
Find Deal
Tue, Nov 11 - Tue, Nov 18

Azul flights from Washington, D.C. to Rio de Janeiro Santos Dumont Airport

Our best Azul deals on Washington, D.C. to Rio de Janeiro Santos Dumont Airport flight tickets
Azul
Nov 9
IAD5:25 pmWashington, D.C. Dulles Intl
22h 45m
2 stops
SDU6:10 pmRio de Janeiro Santos Dumont
Nov 17
SDU6:50 pmRio de Janeiro Santos Dumont
18h 38m
2 stops
IAD11:28 amWashington, D.C. Dulles Intl
$821
Find similar
Azul
Oct 25
IAD5:27 pmWashington, D.C. Dulles Intl
23h 43m
2 stops
SDU6:10 pmRio de Janeiro Santos Dumont
Oct 29
SDU3:15 pmRio de Janeiro Santos Dumont
21h 13m
2 stops
IAD11:28 amWashington, D.C. Dulles Intl
$964
Find similar
Azul
Oct 28
IAD12:45 pmWashington, D.C. Dulles Intl
23h 20m
2 stops
SDU1:05 pmRio de Janeiro Santos Dumont
Nov 2
SDU5:15 amRio de Janeiro Santos Dumont
17h 10m
2 stops
IAD8:25 pmWashington, D.C. Dulles Intl
$2,527
Find similar

United Airlines flights from Washington, D.C. to Rio de Janeiro Santos Dumont Airport

Our best United Airlines deals on Washington, D.C. to Rio de Janeiro Santos Dumont Airport flight tickets
United Airlines
Nov 9
IAD10:30 pmWashington, D.C. Dulles Intl
16h 10m
1 stop
SDU4:40 pmRio de Janeiro Santos Dumont
Nov 17
SDU1:45 pmRio de Janeiro Santos Dumont
18h 50m
1 stop
IAD6:35 amWashington, D.C. Dulles Intl
$723
Find similar
United Airlines
Nov 11
BWI6:00 amBaltimore/Washington
32h 45m
2 stops
SDU4:45 pmRio de Janeiro Santos Dumont
Nov 18
SDU1:45 pmRio de Janeiro Santos Dumont
23h 47m
2 stops
BWI11:32 amBaltimore/Washington
$739
Find similar
United Airlines
Nov 9
IAD10:30 pmWashington, D.C. Dulles Intl
16h 10m
1 stop
SDU4:40 pmRio de Janeiro Santos Dumont
Nov 17
SDU1:45 pmRio de Janeiro Santos Dumont
18h 50m
1 stop
IAD6:35 amWashington, D.C. Dulles Intl
$740
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 October 14, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Rio de Janeiro Santos Dumont Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreRio de Janeiro

BWI - SDU

BWISDU

Baltimore/Washington

Wed 11/12

11:29 am-4:45 pm

3 stops27h 16m

Rio de Janeiro Santos Dumont

Tue 11/18

7:45 am-3:47 pm

3 stops34h 02m

$588

BaltimoreRio de Janeiro

BWI - SDU

BWISDU

Baltimore/Washington

Fri 4/3

2:10 pm-9:35 am

2 stops18h 25m

Rio de Janeiro Santos Dumont

Wed 4/22

3:40 pm-2:47 pm

2 stops24h 07m

$599

Washington, D.C.Rio de Janeiro

DCA - SDU

DCASDU

Washington, D.C. Reagan-National

Sat 4/11

12:05 pm-9:35 am

2 stops20h 30m

Rio de Janeiro Santos Dumont

Mon 4/20

8:20 pm-2:05 pm

2 stops18h 45m

$600

Washington, D.C.Rio de Janeiro

DCA - SDU

DCASDU

Washington, D.C. Reagan-National

Wed 4/1

4:10 pm-2:20 pm

2 stops21h 10m

Rio de Janeiro Santos Dumont

Wed 4/22

11:25 am-9:53 pm

2 stops35h 28m

$623

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Wed 4/1

9:55 am-2:20 pm

2 stops27h 25m

Rio de Janeiro Santos Dumont

Thu 4/23

11:25 am-1:01 pm

2 stops26h 36m

$623

Washington, D.C.Rio de Janeiro

DCA - SDU

DCASDU

Washington, D.C. Reagan-National

Thu 3/26

2:55 pm-9:25 am

2 stops17h 30m

Rio de Janeiro Santos Dumont

Sun 4/5

8:20 pm-2:06 pm

2 stops18h 46m

$699

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Sun 11/9

10:30 pm-4:40 pm

1 stop16h 10m

Rio de Janeiro Santos Dumont

Mon 11/17

1:45 pm-6:35 am

1 stop18h 50m

$723

Washington, D.C.Rio de Janeiro

DCA - SDU

DCASDU

Washington, D.C. Reagan-National

Wed 3/18

3:39 pm-4:55 pm

2 stops24h 16m

Rio de Janeiro Santos Dumont

Sun 3/22

8:25 pm-10:00 pm

2 stops26h 35m

$735

Washington, D.C.Rio de Janeiro

DCA - SDU

DCASDU

Washington, D.C. Reagan-National

Wed 3/11

3:39 pm-4:55 pm

2 stops24h 16m

Rio de Janeiro Santos Dumont

Sun 3/15

6:00 am-10:00 pm

2 stops17h 00m

$736

BaltimoreRio de Janeiro

BWI - SDU

BWISDU

Baltimore/Washington

Tue 11/11

6:00 am-4:45 pm

2 stops32h 45m

Rio de Janeiro Santos Dumont

Tue 11/18

1:45 pm-11:32 am

2 stops23h 47m

$739

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Washington, D.C. 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 Washington, D.C. is on a Sunday. momondo users have found tickets for Sunday departures for as low as $1,021. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Wednesday is the most expensive day to depart from Washington, D.C. because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $1,358.

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 Washington, D.C. in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $973 when looking at flights departing in the afternoon. Try not to purchase tickets at noon because they tend to be around $1,358. Of course, these prices can vary depending on the time of year and what airport you fly to.

Can stopping save me money on Washington, D.C. to Rio de Janeiro Santos Dumont Airport flights?

You could potentially save up to 3% on your flight if you consider stops on a Washington, D.C. to Rio de Janeiro Santos Dumont Airport flight.

When to book flights from Washington, D.C. to Rio de Janeiro Santos Dumont Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. 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 Washington, D.C. to Rio de Janeiro Santos Dumont Airport (WAS to SDU) flight deals and tips

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

Direct flights

None
There are no direct flights from Washington, D.C. to Rio de Janeiro Santos Dumont Airport. There are no popular flight routes from Washington, D.C. to Rio de Janeiro Santos Dumont Airport.
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  • How far is Washington, D.C. to Rio de Janeiro Santos Dumont by plane?

    The distance between Washington, D.C. and Rio de Janeiro Santos Dumont is about 4796.8 mi. In terms of flight time, this usually takes a little over 15h 25m.

  • When did momondo last update prices for flights from Washington, D.C. to Rio de Janeiro Santos Dumont Airport?

    Prices for flights from Washington, D.C. to Rio de Janeiro Santos Dumont Airport were last updated today.

  • How old do you have to be to fly from Washington, D.C. 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 Washington, D.C. to Rio de Janeiro Santos Dumont Airport.

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

    The necessary travel and health documents for your Rio de Janeiro Santos Dumont Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking 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 Washington, D.C. to Rio de Janeiro?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Rio de Janeiro. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Washington, D.C. to Rio de Janeiro with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington, D.C. to Rio de Janeiro flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington, D.C. 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 Washington, D.C..

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

Of course. momondo tracks the price of Washington, D.C. to Rio de Janeiro flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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