Dulles Intl

$343+ 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 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
SDU — IAD
Nov 22 — Nov 291
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Find 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 October 23, 2025.

This United Airlines deal was found by Cheapflights users on 10/22. 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 11/241:45 pmSDU - IAD
1 stop18h 50mUnited Airlines
Tue 12/26:30 amIAD - SDU
2 stops32h 10mUnited Airlines
Deal found 10/22$731
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Fri 11/141:45 pmSDU - IAD
2 stops33h 38mUnited Airlines
Tue 12/26:30 amIAD - SDU
2 stops32h 10mUnited Airlines
Deal found 10/23$736
This Air Canada deal was found by Cheapflights users on 10/22. 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.
Tue 11/251:45 pmSDU - IAD
2 stops33h 35mAir Canada
Wed 12/39:45 amIAD - SDU
2 stops28h 55mAir Canada
Deal found 10/22$854
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/241:45 pmSDU - IAD
1 stop18h 50mUnited Airlines
Mon 12/88:20 amIAD - SDU
2 stops30h 15mUnited Airlines
Deal found 10/22$858
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/251:45 pmSDU - IAD
2 stops24h 04mUnited Airlines
Mon 12/81:10 pmIAD - SDU
2 stops25h 25mUnited Airlines
Deal found 10/22$863
This Air Canada deal was found by Cheapflights users on 10/21. 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.
Mon 11/101:45 pmSDU - IAD
2 stops33h 09mAir Canada
Sun 11/239:45 amIAD - SDU
2 stops28h 55mAir Canada
Deal found 10/21$871
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/271:45 pmSDU - IAD
1 stop18h 50mUnited Airlines
Mon 12/88:20 amIAD - SDU
2 stops30h 15mUnited Airlines
Deal found 10/22$928
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/271:45 pmSDU - IAD
2 stops23h 43mUnited Airlines
Wed 12/31:10 pmIAD - SDU
2 stops25h 30mUnited Airlines
Deal found 10/22$933
This Air Canada deal was found by Cheapflights users on 10/22. 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.
Tue 11/251:45 pmSDU - IAD
2 stops32h 41mAir Canada
Thu 12/49:45 amIAD - SDU
2 stops28h 50mAir Canada
Deal found 10/22$939
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/251:45 pmSDU - IAD
1 stop18h 50mUnited Airlines
Thu 12/410:30 pmIAD - SDU
1 stop16h 05mUnited Airlines
Deal found 10/22$941

Cheap 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 October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$603
(Air Canada)

One-way from

$343
(United Airlines)

Popular in

June

Cheapest in

March

Average price

$523
Provider with most accurate pricing for Rio de Janeiro (RIO)-Washington, D.C. (WAS) flight deals.
Provider most trusted by Cheapflights users for Rio de Janeiro (RIO)-Washington, D.C. (WAS) flights.
From Rio de Janeiro Santos Dumont to Washington, D.C. Dulles Intl
One-way flight from Rio de Janeiro Santos Dumont to Washington, D.C. Dulles Intl
Highest demand for flights based on searches. 7% potential increase in price ($49 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Average for round-trip flights in October 2025

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 October 23, 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

Fri 3/13

11:25 am-8:59 pm

2 stops34h 34m

Washington, D.C. Dulles Intl

Fri 3/20

9:55 am-2:20 pm

2 stops27h 25m

$607

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Wed 11/26

1:45 pm-6:35 am

1 stop18h 50m

Washington, D.C. Dulles Intl

Tue 12/2

6:30 am-4:40 pm

2 stops32h 10m

$731

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Tue 11/25

1:45 pm-11:49 am

2 stops24h 04m

Washington, D.C. Dulles Intl

Tue 12/2

6:30 am-4:40 pm

2 stops32h 10m

$736

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Fri 11/14

1:45 pm-9:23 pm

2 stops33h 38m

Washington, D.C. Dulles Intl

Tue 12/2

6:30 am-4:40 pm

2 stops32h 10m

$736

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Sun 2/1

2:00 pm-11:53 am

2 stops23h 53m

Washington, D.C. Dulles Intl

Wed 2/4

4:00 pm-1:15 pm

2 stops19h 15m

$787

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Mon 11/24

1:45 pm-10:12 pm

2 stops34h 27m

Washington, D.C. Dulles Intl

Tue 12/2

6:30 am-4:40 pm

2 stops32h 10m

$806

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Thu 11/27

1:45 pm-11:28 am

2 stops23h 43m

Washington, D.C. Dulles Intl

Tue 12/2

6:30 am-4:40 pm

2 stops32h 10m

$806

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

Washington, D.C. Dulles Intl

Wed 2/4

6:03 am-2:20 pm

2 stops30h 17m

$856

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Tue 11/25

1:45 pm-6:35 am

1 stop18h 50m

Washington, D.C. Dulles Intl

Wed 12/3

8:20 am-4:40 pm

2 stops30h 20m

$858

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Sun 3/22

2:55 pm-11:55 pm

2 stops34h 00m

Washington, D.C. Dulles Intl

Sat 4/4

10:30 pm-5:45 pm

1 stop18h 15m

$863

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

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 18h 50m. 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
Springfield
Silver Spring
Hanover
Gaithersburg
Fredericksburg
Fairfax
Linthicum Heights
Falls Church
Owings Mills
Manassas
Largo
Oxon Hill
Laurel
Towson
National Harbor
Waldorf

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