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Dulles Intl

$302+ Cheap flights from Santos Dumont, Brazil (SDU) to Dulles Intl (IAD)

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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
SDU — IAD
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
1 adult, Economy
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Cheap flight deals from Santos Dumont to Dulles Intl

Cheapest flights from Santos Dumont to Dulles Intl
Explore the most affordable flight options available from Santos Dumont to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 4, 2025.

This United Airlines deal was found by Cheapflights users on 12/1. 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.
Wed 12/31:45 pmSDU - IAD
1 stop18h 50mUnited Airlines
Mon 12/810:30 pmIAD - SDU
1 stop16h 05mUnited Airlines
Deal found 12/1$1,221
This United Airlines deal was found by Cheapflights users on 12/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/212:50 pmSDU - IAD
1 stop17h 45mUnited Airlines
Mon 12/2910:15 pmIAD - SDU
2 stops37h 55mUnited Airlines
Deal found 12/3$1,227
This Air Canada deal was found by Cheapflights users on 12/1. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/31:45 pmSDU - IAD
2 stops28h 01mAir Canada
Mon 12/85:50 pmIAD - SDU
2 stops20h 45mAir Canada
Deal found 12/1$1,393
This 123 Milhas deal was found by Cheapflights users on 12/4. 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 123 Milhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:05 pmSDU - IAD
2 stops18h 08mLATAM Airlines
Sat 1/36:59 pmIAD - SDU
2 stops16h 16mLATAM Airlines
Deal found 12/4$1,576
This 123 Milhas deal was found by Cheapflights users on 12/2. 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 123 Milhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:20 amSDU - IAD
2 stops17h 05mAzul
Tue 1/209:45 amIAD - SDU
2 stops22h 55mAzul
Deal found 12/2$1,629
This 123 Milhas deal was found by Cheapflights users on 12/2. 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 123 Milhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/198:05 pmSDU - IAD
2 stops21h 09mLATAM Airlines
Mon 1/126:15 pmIAD - SDU
2 stops17h 00mLATAM Airlines
Deal found 12/2$1,707
This 123 Milhas deal was found by Cheapflights users on 12/4. 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 123 Milhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/278:05 pmSDU - IAD
2 stops22h 43mLATAM Airlines
Sat 1/36:59 pmIAD - SDU
2 stops16h 16mLATAM Airlines
Deal found 12/4$1,834
This 123 Milhas deal was found by Cheapflights users on 12/2. 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 123 Milhas is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:05 pmSDU - IAD
2 stops17h 34mLATAM Airlines
Sat 1/34:55 pmIAD - SDU
2 stops18h 20mLATAM Airlines
Deal found 12/2$1,853
This lastminute.com deal was found by Cheapflights users on 12/2. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/198:05 pmSDU - IAD
2 stops18h 08mLATAM Airlines
Thu 1/15:06 pmIAD - SDU
2 stops18h 09mLATAM Airlines
Deal found 12/2$2,109

Find flight deals from Santos Dumont to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Santos Dumont (SDU) to Dulles Intl (IAD). 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 December 4, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$609
(Air Canada)

One-way from

$302
(FlightHub)

Popular in

June

Cheapest in

March

Average price

$570
Provider with most accurate pricing for Rio de Janeiro (RIO)-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for Rio de Janeiro (RIO)-Washington, D.C. (WAS) flights.
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From Rio de Janeiro Santos Dumont to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Rio de Janeiro Santos Dumont to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($62 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Santos Dumont to Dulles Intl 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 December 4, 2025.
Use the filters below to find and compare flights from Rio de Janeiro Santos Dumont Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Santos Dumont

Fly to

Dulles Intl

Route

Depart

Return

Price

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Thu 5/7

1:45 pm-11:16 am

2 stops22h 31m

Washington, D.C. Dulles Intl

Sun 5/10

9:45 am-4:45 pm

2 stops30h 00m

$609

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Thu 2/26

8:05 pm-7:09 pm

2 stops25h 04m

Washington, D.C. Dulles Intl

Mon 3/2

12:35 pm-1:15 pm

2 stops22h 40m

$685

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Thu 5/7

1:45 pm-6:25 am

1 stop17h 40m

Washington, D.C. Dulles Intl

Sun 5/10

10:30 pm-4:45 pm

1 stop17h 15m

$721

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Thu 2/26

1:45 pm-6:35 am

1 stop18h 50m

Washington, D.C. Dulles Intl

Mon 3/2

5:34 pm-4:40 pm

2 stops21h 06m

$722

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Wed 5/6

1:45 pm-4:20 pm

2 stops27h 35m

Washington, D.C. Dulles Intl

Wed 6/3

9:45 am-4:45 pm

2 stops30h 00m

$855

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Fri 4/24

1:45 pm-3:39 pm

2 stops26h 54m

Washington, D.C. Dulles Intl

Thu 5/21

9:55 am-4:45 pm

2 stops29h 50m

$885

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Wed 1/28

2:00 pm-9:13 am

2 stops21h 13m

$302

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Sun 2/1

2:50 pm-6:35 am

1 stop17h 45m

$324

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Thu 1/29

10:40 am-4:25 am

2 stops19h 45m

$373

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Mon 2/2

7:15 pm-1:15 pm

2 stops20h 00m

$376

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 18 results
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Best time to book a flight from Santos Dumont to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Santos Dumont 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.

Related info for your journey

Find useful and relevant information for your journey from Santos Dumont to Dulles Intl. 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 Rio de Janeiro Santos Dumont Airport to Washington, D.C. Dulles Intl Airport?

    Departing from Rio de Janeiro Santos Dumont Airport to Washington, D.C. Dulles Intl Airport will take you 17h 40m. There are 4811 mi between Rio de Janeiro Santos Dumont Airport and Washington, D.C. Dulles Intl Airport. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Santos Dumont to Dulles Intl that include hotel bookings?

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

  • How can I find direct flights from Santos Dumont to Dulles Intl?

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

  • Can I find deals for business class flights from Santos Dumont to Dulles Intl?

    Yes. Cheapflights offers flight deals from Santos Dumont to Dulles Intl 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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Fairfax
Linthicum Heights
Manassas
Laurel
Towson
National Harbor
Bowie
Largo
McLean
Clinton
Upper Marlboro

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Alternative routes for Santos Dumont to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
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