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Dulles Intl

$336+ 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 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
SDU — IAD
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
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 February 3, 2026.

This Booking.com deal was found by Cheapflights users on 2/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/261:45 pm
SDU
-
IAD
2 stops32h 09m
Air Canada
Wed 11/44:30 pm
IAD
-
SDU
2 stops22h 15m
Air Canada
Deal found 2/3$628
This Air Canada deal was found by Cheapflights users on 2/2. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/511:20 am
SDU
-
IAD
2 stops30h 29m
Air Canada
Thu 3/194:30 pm
IAD
-
SDU
2 stops23h 15m
Air Canada
Deal found 2/2$633
This Booking.com deal was found by Cheapflights users on 2/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/61:45 pm
SDU
-
IAD
2 stops30h 13m
Air Canada
Thu 5/149:55 am
IAD
-
SDU
2 stops29h 50m
Air Canada
Deal found 2/2$676
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Thu 3/121:50 pm
SDU
-
IAD
1 stop17h 50m
United Airlines
Mon 3/161:15 pm
IAD
-
SDU
2 stops26h 30m
United Airlines
Deal found 2/1$683
This United Airlines deal was found by Cheapflights users on 1/31. 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.
Wed 3/181:50 pm
SDU
-
IAD
1 stop17h 50m
United Airlines
Wed 3/2511:30 pm
IAD
-
SDU
1 stop16h 15m
United Airlines
Deal found 1/31$688
This Air Canada deal was found by Cheapflights users on 1/31. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/81:45 pm
SDU
-
IAD
2 stops30h 55m
Air Canada
Wed 4/2212:40 pm
IAD
-
SDU
2 stops27h 05m
Air Canada
Deal found 1/31$733
This Booking.com deal was found by Cheapflights users on 2/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/111:50 pm
SDU
-
IAD
2 stops32h 04m
Air Canada
Sat 4/44:30 pm
IAD
-
SDU
2 stops24h 15m
Air Canada
Deal found 2/2$738

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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$633
(Mytrip)

One-way from

$336
(Trip.com)

Popular in

June

Cheapest in

March

Average price

$644
Provider with most accurate pricing for Rio de Janeiro (RIO)-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Rio de Janeiro (RIO)-Washington, D.C. (WAS) flights.
Search Deals
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. 15% potential increase in price ($110 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 3, 2026.
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 3/12

1:50 pm-6:40 am

1 stop17h 50m

Washington, D.C. Dulles Intl

Mon 3/16

11:30 pm-4:45 pm

1 stop16h 15m

$683

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Tue 5/19

1:45 pm-6:25 am

1 stop17h 40m

Washington, D.C. Dulles Intl

Tue 5/26

10:30 pm-4:45 pm

1 stop17h 15m

$686

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Wed 3/18

1:50 pm-6:40 am

1 stop17h 50m

Washington, D.C. Dulles Intl

Wed 3/25

11:30 pm-4:45 pm

1 stop16h 15m

$688

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Thu 3/19

9:50 am-5:25 am

2 stops20h 35m

$336

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Sun 3/22

8:30 am-5:25 am

2 stops21h 55m

$351

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Wed 5/27

1:45 pm-6:25 am

1 stop17h 40m

$355

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Thu 3/19

1:50 pm-6:40 am

1 stop17h 50m

$355

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Wed 3/11

1:50 pm-6:40 am

1 stop17h 50m

$355

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Thu 5/28

1:45 pm-6:25 am

1 stop17h 40m

$355

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Tue 5/26

1:45 pm-12:32 am

2 stops35h 47m

$360

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 13 results
1
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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 50m. There are 4811 mi between Rio de Janeiro Santos Dumont Airport and Washington, D.C. Dulles Intl Airport.

  • 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
Silver Spring
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Upper Marlboro
Manassas
Largo
Bowie
McLean
Clinton

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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.
Rio de Janeiro–Galeão Intl to Dulles Intl flights
Rio de Janeiro–Galeão Intl to Reagan-National flights
Rio de Janeiro–Galeão Intl to Baltimore flights

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