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Dulles Intl

$301+ 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 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
SDU — IAD
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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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 September 17, 2025.

Round-trip from

$699
(Mytrip)

One-way from

$301
(United Airlines)

Popular in

June

Cheapest in

September

Average price

$494
From Rio de Janeiro Santos Dumont to Washington, D.C. Dulles Intl
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One-way flight from Rio de Janeiro Santos Dumont to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 10% potential increase in price ($73 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 September 2025
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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 September 17, 2025.

This LATAM Airlines deal was found by Cheapflights users on 9/17. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/238:20 pmSDU - IAD
2 stops23h 19mLATAM Airlines
Fri 10/243:33 pmIAD - SDU
2 stops21h 17mLATAM Airlines
Deal found 9/17$516
This Mytrip deal was found by Cheapflights users on 9/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/271:45 pmSDU - IAD
2 stops25h 30mMultiple Airlines
Tue 11/112:35 pmIAD - SDU
2 stops20h 30mMultiple Airlines
Deal found 9/17$699
This Air Canada deal was found by Cheapflights users on 9/17. 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 10/2211:30 amSDU - IAD
2 stops29h 48mAir Canada
Tue 10/289:45 amIAD - SDU
2 stops29h 55mAir Canada
Deal found 9/17$723
This Air Canada deal was found by Cheapflights users on 9/17. 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 10/2111:30 amSDU - IAD
2 stops27h 55mAir Canada
Tue 10/289:45 amIAD - SDU
2 stops29h 55mAir Canada
Deal found 9/17$730
This Mytrip deal was found by Cheapflights users on 9/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/58:45 amSDU - IAD
2 stops21h 50mMultiple Airlines
Tue 10/143:20 pmIAD - SDU
2 stops19h 35mMultiple Airlines
Deal found 9/17$747
This Mytrip deal was found by Cheapflights users on 9/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/58:45 amSDU - IAD
2 stops21h 50mMultiple Airlines
Wed 10/153:20 pmIAD - SDU
2 stops21h 05mMultiple Airlines
Deal found 9/17$755
This Mytrip deal was found by Cheapflights users on 9/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/58:45 amSDU - IAD
2 stops21h 50mMultiple Airlines
Thu 10/165:45 amIAD - SDU
3 stops24h 30mMultiple Airlines
Deal found 9/17$771
This Air Canada deal was found by Cheapflights users on 9/16. 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.
Sat 11/15:30 pmSDU - IAD
2 stops29h 24mAir Canada
Tue 11/189:45 amIAD - SDU
2 stops29h 00mAir Canada
Deal found 9/16$795
This Air Canada deal was found by Cheapflights users on 9/17. 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 9/2411:25 amSDU - IAD
2 stops24h 48mAir Canada
Thu 10/232:25 pmIAD - SDU
2 stops22h 55mAir Canada
Deal found 9/17$800
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/262:50 pmSDU - IAD
1 stop16h 50mUnited Airlines
Thu 10/3011:30 pmIAD - SDU
1 stop16h 15mUnited Airlines
Deal found 9/16$815

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 September 17, 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

Mon 10/27

1:45 pm-2:15 pm

2 stops25h 30m

Washington, D.C. Dulles Intl

Tue 11/11

2:35 pm-1:05 pm

2 stops20h 30m

$699

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Wed 10/22

11:30 am-4:18 pm

2 stops29h 48m

Washington, D.C. Dulles Intl

Tue 10/28

9:45 am-4:40 pm

2 stops29h 55m

$723

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Sun 10/5

8:45 am-5:35 am

2 stops21h 50m

Washington, D.C. Dulles Intl

Wed 10/15

3:20 pm-1:25 pm

2 stops21h 05m

$755

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Sat 11/1

5:30 pm-9:54 pm

2 stops29h 24m

Washington, D.C. Dulles Intl

Tue 11/18

9:45 am-4:45 pm

2 stops29h 00m

$795

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Sun 10/5

9:35 am-2:00 pm

3 stops29h 25m

Washington, D.C. Dulles Intl

Thu 10/16

4:05 am-7:15 am

3 stops26h 10m

$804

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Sun 10/26

2:50 pm-6:40 am

1 stop16h 50m

Washington, D.C. Dulles Intl

Thu 10/30

11:30 pm-4:45 pm

1 stop16h 15m

$815

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Thu 2/12

11:25 am-3:54 pm

2 stops30h 29m

Washington, D.C. Dulles Intl

Sun 2/22

1:20 pm-2:20 pm

2 stops23h 00m

$971

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Mon 11/10

1:45 pm-8:54 pm

2 stops33h 09m

Washington, D.C. Dulles Intl

Sun 11/23

9:45 am-4:40 pm

2 stops28h 55m

$1,003

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Fri 11/14

1:45 pm-6:35 am

1 stop18h 50m

$301

Rio de JaneiroWashington, D.C.

SDU - IAD

SDUIAD

Rio de Janeiro Santos Dumont

Sun 9/28

6:15 am-6:25 am

1 stop25h 10m

$307

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 17 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 29h 48m. 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.

  • What is the cheapest month to book a flight from Rio de Janeiro Santos Dumont Airport to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Rio de Janeiro Santos Dumont Airport to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Rio de Janeiro Santos Dumont Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
National Harbor
Dundalk

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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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