$274+ Cheap flights from District of Columbia 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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SDU
Oct 16 — Oct 231
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from District of Columbia to Santos Dumont
Keep the following information in mind while searching for District of Columbia to Santos Dumont flight deals. Data was last updated September 16, 2025.
Round-trip from | $615 (KAYAK) |
|---|---|
One-way from | $274 (123 Milhas) |
Popular in | December |
Cheapest in | October |
Average price | $574 |
Find flight deals from District of Columbia to Santos Dumont
Cheapest flights from District of Columbia to Santos DumontExplore the most affordable flight options available from District of Columbia to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.
Explore the most affordable flight options available from District of Columbia to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.
This KAYAK deal was found by Cheapflights users on 9/15. 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.
Mon 10/274:03 pmDCA - SDU
2 stops18h 32mLATAM Airlines
Sun 11/95:10 pmSDU - DCA
2 stops20h 20mLATAM Airlines
Deal found 9/15![LATAM Airlines logo]()
$615
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Tue 10/145:45 amIAD - SDU
3 stops31h 35mMultiple Airlines
Tue 10/2111:30 amSDU - IAD
2 stops19h 05mMultiple Airlines
Deal found 9/14![Multiple Airlines logo]()
$652
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Fri 11/285:45 amIAD - SDU
2 stops24h 10mMultiple Airlines
Thu 12/48:50 amSDU - IAD
2 stops21h 35mMultiple Airlines
Deal found 9/14![Multiple Airlines logo]()
$661
This SmartFares deal was found by Cheapflights users on 9/14. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/52:40 pmDCA - SDU
2 stops40h 45mLATAM Airlines
Mon 11/102:00 pmSDU - DCA
2 stops49h 58mLATAM Airlines
Deal found 9/14![LATAM Airlines logo]()
$662
This Orbitz 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:10 pmDCA - SDU
2 stops22h 35mMultiple Airlines
Sun 12/142:00 pmSDU - DCA
2 stops34h 02mMultiple Airlines
Deal found 9/16![Multiple Airlines logo]()
$682
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/152:55 pmDCA - SDU
2 stops21h 45mLATAM Airlines
Sat 9/205:45 pmSDU - DCA
2 stops21h 15mLATAM Airlines
Deal found 9/15![LATAM Airlines logo]()
$695
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/205:45 amIAD - SDU
3 stops24h 50mMultiple Airlines
Tue 10/288:10 amSDU - IAD
2 stops22h 15mMultiple Airlines
Deal found 9/16![Multiple Airlines logo]()
$697
This Air Canada deal was found by Cheapflights users on 9/14. 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 10/2811:05 amDCA - SDU
2 stops28h 45mAir Canada
Mon 11/31:45 pmSDU - DCA
2 stops22h 41mAir Canada
Deal found 9/14![Air Canada logo]()
$698
This Air Canada deal was found by Cheapflights users on 9/14. 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 10/289:45 amIAD - SDU
2 stops30h 05mAir Canada
Mon 11/31:45 pmSDU - IAD
2 stops33h 09mAir Canada
Deal found 9/14![Air Canada logo]()
$698
This FlightHub deal was found by Cheapflights users on 9/14. 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.
Wed 10/292:40 pmDCA - SDU
2 stops17h 45mLATAM Airlines
Wed 11/58:05 pmSDU - DCA
2 stops19h 40mLATAM Airlines
Deal found 9/14![LATAM Airlines logo]()
$713
This Mytrip deal was found by Cheapflights users on 9/15. 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 10/276:45 amIAD - SDU
2 stops23h 50mMultiple Airlines
Sun 11/98:45 amSDU - IAD
2 stops21h 40mMultiple Airlines
Deal found 9/15![Multiple Airlines logo]()
$722
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Wed 11/52:35 pmIAD - SDU
2 stops20h 40mMultiple Airlines
Mon 11/108:05 pmSDU - IAD
2 stops19h 10mMultiple Airlines
Deal found 9/14![Multiple Airlines logo]()
$739
Cheapflights Fare Finder
Customize your flight search to find flights from District of Columbia 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 September 16, 2025.
Use the filters below to find and compare flights from District of Columbia to Rio de Janeiro Santos Dumont Airport that are best for you.
Fly from
District of Columbia
Fly to
Santos Dumont
Route
Depart
Return
Price
Washington, D.C.Rio de Janeiro
DCA - SDU
DCASDU
Washington, D.C. Reagan-National
Sat 2/14
11:05 am-5:45 pm
2 stops28h 40m
Rio de Janeiro Santos Dumont
Mon 2/16
11:25 am-10:26 am
2 stops25h 01m
$623
Washington, D.C.Rio de Janeiro
DCA - SDU
DCASDU
Washington, D.C. Reagan-National
Sat 2/14
11:05 am-5:45 pm
2 stops28h 40m
Rio de Janeiro Santos Dumont
Wed 2/25
11:25 am-10:26 am
2 stops25h 01m
$623
Washington, D.C.Rio de Janeiro
DCA - SDU
DCASDU
Washington, D.C. Reagan-National
Sun 2/15
6:00 am-2:20 pm
2 stops30h 20m
Rio de Janeiro Santos Dumont
Wed 2/25
11:25 am-10:26 am
2 stops25h 01m
$623
Washington, D.C.Rio de Janeiro
DCA - SDU
DCASDU
Washington, D.C. Reagan-National
Sat 2/14
4:10 pm-5:45 pm
2 stops23h 35m
Rio de Janeiro Santos Dumont
Tue 2/24
11:25 am-8:55 am
2 stops23h 30m
$629
Washington, D.C.Rio de Janeiro
IAD - SDU
IADSDU
Washington, D.C. Dulles Intl
Fri 11/28
5:45 am-7:55 am
2 stops24h 10m
Rio de Janeiro Santos Dumont
Thu 12/4
8:50 am-4:25 am
2 stops21h 35m
$661
Washington, D.C.Rio de Janeiro
DCA - SDU
DCASDU
Washington, D.C. Reagan-National
Wed 11/5
2:40 pm-9:25 am
2 stops40h 45m
Rio de Janeiro Santos Dumont
Mon 11/10
8:05 pm-1:58 pm
2 stops43h 53m
$662
Washington, D.C.Rio de Janeiro
IAD - SDU
IADSDU
Washington, D.C. Dulles Intl
Thu 11/6
3:00 am-7:55 am
3 stops26h 55m
Rio de Janeiro Santos Dumont
Sun 11/16
8:30 am-4:25 am
2 stops21h 55m
$697
Washington, D.C.Rio de Janeiro
DCA - SDU
DCASDU
Washington, D.C. Reagan-National
Tue 10/28
11:05 am-4:50 pm
2 stops28h 45m
Rio de Janeiro Santos Dumont
Mon 11/3
1:45 pm-10:26 am
2 stops22h 41m
$698
Washington, D.C.Rio de Janeiro
IAD - SDU
IADSDU
Washington, D.C. Dulles Intl
Mon 10/20
3:20 pm-2:20 pm
2 stops22h 00m
Rio de Janeiro Santos Dumont
Tue 10/28
1:45 pm-2:15 pm
2 stops25h 30m
$704
Washington, D.C.Rio de Janeiro
DCA - SDU
DCASDU
Washington, D.C. Reagan-National
Mon 11/10
2:35 pm-9:25 am
2 stops16h 50m
Rio de Janeiro Santos Dumont
Mon 11/17
2:00 pm-1:58 pm
2 stops25h 58m
$713
Showing 1-10 of 38 results
Best time to book a flight from District of Columbia to Santos Dumont
Have a flexible travel schedule? Discover the best time to fly to Santos Dumont from District of Columbia 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 District of Columbia to Rio de Janeiro Santos Dumont Airport
What is the cheapest time of day to fly from DC to SDU?
Find hourly flight availability from District of Columbia to Santos Dumont. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from District of Columbia to Rio de Janeiro Santos Dumont Airport as you normally would.