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Santos Dumont

$272+ Cheap flights from Washington, D.C. (WAS) 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 12/31. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SDU
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Santos Dumont

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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 November 3, 2025.

Most accurate provider

AranGrant
2 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$629
(Air Canada)

One-way from

$272
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$610
Provider with most accurate pricing for Washington, D.C. (WAS)-Rio de Janeiro Santos Dumont flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Rio de Janeiro Santos Dumont flights.
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From Washington, D.C. (WAS) to Rio de Janeiro Santos Dumont
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One-way flight from Washington, D.C. (WAS) to Rio de Janeiro Santos Dumont
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Highest demand for flights based on searches. 11% potential increase in price ($91 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Washington, D.C. to Santos Dumont

Cheapest flights from Washington, D.C. to Santos Dumont
Explore the most affordable flight options available from Washington, D.C. to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:15 amBWI - SDU
2 stops32h 30mUnited Airlines
Tue 11/181:45 pmSDU - BWI
2 stops34h 56mUnited Airlines
Deal found 11/2$698
This United Airlines deal was found by Cheapflights users on 11/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/3010:30 pmIAD - SDU
1 stop16h 05mUnited Airlines
Tue 12/91:45 pmSDU - IAD
1 stop18h 50mUnited Airlines
Deal found 11/1$705
This United Airlines deal was found by Cheapflights users on 11/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1010:30 pmIAD - SDU
1 stop16h 15mUnited Airlines
Wed 11/261:45 pmSDU - IAD
1 stop18h 50mUnited Airlines
Deal found 11/1$753
This United Airlines deal was found by Cheapflights users on 11/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/110:30 pmIAD - SDU
1 stop16h 05mUnited Airlines
Tue 12/91:45 pmSDU - IAD
1 stop18h 50mUnited Airlines
Deal found 11/1$755
This FlightHub deal was found by Cheapflights users on 11/2. 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.
Thu 11/135:03 pmDCA - SDU
2 stops18h 02mLATAM Airlines
Mon 11/175:10 pmSDU - DCA
2 stops18h 52mLATAM Airlines
Deal found 11/2$756
This FlightHub deal was found by Cheapflights users on 11/2. 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 12/112:11 pmIAD - SDU
2 stops22h 24mLATAM Airlines
Tue 12/98:05 pmSDU - IAD
2 stops17h 34mLATAM Airlines
Deal found 11/2$756
This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:15 amBWI - SDU
2 stops32h 25mUnited Airlines
Wed 11/121:45 pmSDU - BWI
2 stops23h 47mUnited Airlines
Deal found 11/2$760
This FlightHub deal was found by Cheapflights users on 11/2. 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 12/15:03 pmDCA - SDU
2 stops18h 12mLATAM Airlines
Tue 12/95:40 pmSDU - DCA
2 stops18h 25mLATAM Airlines
Deal found 11/2$764
This United Airlines deal was found by Cheapflights users on 10/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/110:30 pmIAD - SDU
1 stop16h 05mUnited Airlines
Mon 12/81:45 pmSDU - IAD
2 stops28h 15mUnited Airlines
Deal found 10/31$765
This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:16 pmBWI - SDU
2 stops44h 24mUnited Airlines
Tue 11/111:45 pmSDU - BWI
2 stops22h 14mUnited Airlines
Deal found 11/2$770
This United Airlines deal was found by Cheapflights users on 11/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/3011:00 amDCA - SDU
2 stops27h 35mUnited Airlines
Tue 12/91:45 pmSDU - DCA
2 stops23h 47mUnited Airlines
Deal found 11/1$770
This KAYAK deal was found by Cheapflights users on 11/3. 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.
Thu 11/62:40 pmDCA - SDU
2 stops20h 35mLATAM Airlines
Fri 11/142:00 pmSDU - DCA
2 stops22h 02mLATAM Airlines
Deal found 11/3$778

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 November 3, 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

Washington, D.C.

Fly to

Santos Dumont

Route

Depart

Return

Price

BaltimoreRio de Janeiro

BWI - SDU

BWISDU

Baltimore/Washington

Tue 11/11

6:15 am-4:45 pm

2 stops32h 30m

Rio de Janeiro Santos Dumont

Tue 11/18

1:45 pm-10:41 pm

2 stops34h 56m

$698

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Mon 11/10

10:30 pm-4:45 pm

1 stop16h 15m

Rio de Janeiro Santos Dumont

Wed 11/26

1:45 pm-6:35 am

1 stop18h 50m

$753

BaltimoreRio de Janeiro

BWI - SDU

BWISDU

Baltimore/Washington

Thu 11/6

6:15 am-4:40 pm

2 stops32h 25m

Rio de Janeiro Santos Dumont

Wed 11/12

1:45 pm-11:32 am

2 stops23h 47m

$760

BaltimoreRio de Janeiro

BWI - SDU

BWISDU

Baltimore/Washington

Thu 11/6

6:15 am-4:40 pm

2 stops32h 25m

Rio de Janeiro Santos Dumont

Tue 11/11

1:45 pm-9:59 am

2 stops22h 14m

$760

BaltimoreRio de Janeiro

BWI - SDU

BWISDU

Baltimore/Washington

Thu 11/6

6:15 am-4:40 pm

2 stops32h 25m

Rio de Janeiro Santos Dumont

Thu 11/13

1:45 pm-9:59 am

2 stops22h 14m

$760

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Sun 11/30

12:40 pm-4:35 pm

2 stops25h 55m

Rio de Janeiro Santos Dumont

Tue 12/9

1:45 pm-6:35 am

1 stop18h 50m

$760

Washington, D.C.Rio de Janeiro

DCA - SDU

DCASDU

Washington, D.C. Reagan-National

Mon 12/1

5:03 pm-1:15 pm

2 stops18h 12m

Rio de Janeiro Santos Dumont

Tue 12/9

5:40 pm-10:05 am

2 stops18h 25m

$764

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Mon 12/1

10:30 pm-4:35 pm

1 stop16h 05m

Rio de Janeiro Santos Dumont

Mon 12/8

1:45 pm-4:00 pm

2 stops28h 15m

$765

BaltimoreRio de Janeiro

BWI - SDU

BWISDU

Baltimore/Washington

Thu 1/29

3:31 pm-6:30 pm

3 stops24h 59m

Rio de Janeiro Santos Dumont

Sun 2/1

6:55 pm-11:25 am

2 stops18h 30m

$768

Washington, D.C.Rio de Janeiro

DCA - SDU

DCASDU

Washington, D.C. Reagan-National

Sun 11/30

11:00 am-4:35 pm

2 stops27h 35m

Rio de Janeiro Santos Dumont

Tue 12/9

1:45 pm-11:32 am

2 stops23h 47m

$770

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 55 results
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  • Most accurate provider: When it comes to deals on Washington, D.C.-Rio de Janeiro Santos Dumont Airport flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C.-Rio de Janeiro Santos Dumont Airport flight deals on Cheapflights vs. AranGrant 90-95% of the time. Price accuracy is based on data collected from Washington, D.C.-Rio de Janeiro Santos Dumont Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-Rio de Janeiro Santos Dumont Airport flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C.-Rio de Janeiro Santos Dumont Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Washington, D.C. to Santos Dumont

Have a flexible travel schedule? Discover the best time to fly to Santos Dumont from Washington, D.C. 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 Washington, D.C. to Rio de Janeiro Santos Dumont Airport
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Santos Dumont. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Washington, D.C. to Rio de Janeiro Santos Dumont Airport?

    Departing from Washington, D.C. to Rio de Janeiro Santos Dumont Airport will take you 18h 12m. Airlines will cover a distance of 4794 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Washington, D.C. to Rio de Janeiro Santos Dumont Airport?

    When deciding which route to take from Washington, D.C. to Rio de Janeiro Santos Dumont Airport consider Washington, D.C. Dulles Intl - Rio de Janeiro Santos Dumont, Washington, D.C. Reagan-National - Rio de Janeiro Santos Dumont or Baltimore/Washington - Rio de Janeiro Santos Dumont as they are the most popular.

  • Can I find deals for flights from Washington, D.C. to Santos Dumont that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Santos Dumont flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Santos Dumont?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Santos Dumont.

  • Can I find deals for business class flights from Washington, D.C. to Santos Dumont?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington, D.C. to Santos Dumont

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Rio de Janeiro–Galeão Intl flights
Reagan-National to Rio de Janeiro–Galeão Intl flights
Dulles Intl to Santos Dumont flights

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