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Santos Dumont

$405+ Cheap flights from Washington 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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SDU
Feb 27 — Mar 61
Fri 2/27
Fri 3/6
1 adult, Economy
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Cheap flight deals from Washington to Santos Dumont

Cheapest flights from Washington to Santos Dumont
Explore the most affordable flight options available from Washington to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 28, 2026.

This Mytrip deal was found by Cheapflights users on 1/26. 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 4/228:00 am
SEA
-
SDU
2 stops28h 45m
Multiple Airlines
Mon 4/271:45 pm
SDU
-
SEA
2 stops36h 06m
Multiple Airlines
Deal found 1/26$785
This Mytrip deal was found by Cheapflights users on 1/27. 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 4/228:00 am
SEA
-
SDU
2 stops28h 45m
Multiple Airlines
Tue 4/281:45 pm
SDU
-
SEA
2 stops36h 06m
Multiple Airlines
Deal found 1/27$789
This Air Canada deal was found by Cheapflights users on 1/27. 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 4/158:00 am
SEA
-
SDU
2 stops28h 45m
Air Canada
Mon 4/271:45 pm
SDU
-
SEA
2 stops36h 06m
Air Canada
Deal found 1/27$813
This FlightHub deal was found by Cheapflights users on 1/27. 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.
Sun 4/198:00 am
SEA
-
SDU
2 stops28h 45m
Multiple Airlines
Sun 4/2612:40 pm
SDU
-
SEA
2 stops37h 11m
Multiple Airlines
Deal found 1/27$818
This FlightHub deal was found by Cheapflights users on 1/27. 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.
Fri 4/178:00 am
SEA
-
SDU
2 stops46h 15m
Multiple Airlines
Sun 4/2610:05 am
SDU
-
SEA
2 stops39h 46m
Multiple Airlines
Deal found 1/27$840
This Air Canada deal was found by Cheapflights users on 1/26. 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 2/238:00 am
SEA
-
SDU
2 stops27h 45m
Air Canada
Wed 3/41:50 pm
SDU
-
SEA
2 stops37h 26m
Air Canada
Deal found 1/26$902
This Air Canada deal was found by Cheapflights users on 1/27. 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 4/158:00 am
SEA
-
SDU
2 stops28h 45m
Air Canada
Wed 4/221:45 pm
SDU
-
SEA
2 stops36h 06m
Air Canada
Deal found 1/27$913
This Expedia deal was found by Cheapflights users on 1/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/268:00 am
SEA
-
SDU
2 stops27h 45m
Multiple Airlines
Tue 3/38:05 pm
SDU
-
SEA
2 stops23h 39m
Multiple Airlines
Deal found 1/26$927
This Travelocity deal was found by Cheapflights users on 1/27. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/258:00 am
SEA
-
SDU
2 stops27h 45m
Multiple Airlines
Wed 3/42:00 pm
SDU
-
SEA
2 stops37h 15m
Multiple Airlines
Deal found 1/27$932
This FlightHub deal was found by Cheapflights users on 1/27. 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.
Fri 4/178:00 am
SEA
-
SDU
2 stops46h 15m
Multiple Airlines
Fri 4/241:45 pm
SDU
-
SEA
2 stops36h 06m
Multiple Airlines
Deal found 1/27$935
This Gurufare deal was found by Cheapflights users on 1/26. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/138:00 am
SEA
-
SDU
2 stops34h 25m
Multiple Airlines
Mon 5/256:50 pm
SDU
-
SEA
2 stops31h 06m
Multiple Airlines
Deal found 1/26$979
This Gotogate deal was found by Cheapflights users on 1/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2312:15 pm
SEA
-
SDU
2 stops28h 00m
Multiple Airlines
Sat 10/311:50 pm
SDU
-
SEA
2 stops37h 26m
Multiple Airlines
Deal found 1/28$997

Find flight deals from Washington to Santos Dumont

Keep the following information in mind while searching for Washington to Santos Dumont flight deals. Data was last updated January 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$785
(Mytrip)

One-way from

$405
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$1,423
Provider with most accurate pricing for Seattle/Tacoma Intl-Rio de Janeiro (RIO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Rio de Janeiro (RIO) flights.
Search Deals
From Washington to Rio de Janeiro Santos Dumont
Search Deals
One-way flight from Washington to Rio de Janeiro Santos Dumont
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($123 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington 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 January 28, 2026.
Use the filters below to find and compare flights from Washington to Rio de Janeiro Santos Dumont Airport that are best for you.

Fly from

Washington

Fly to

Santos Dumont

Route

Depart

Return

Price

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Wed 4/22

8:00 am-4:45 pm

2 stops28h 45m

Rio de Janeiro Santos Dumont

Mon 4/27

1:45 pm-9:51 pm

2 stops36h 06m

$785

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Wed 4/22

8:00 am-4:45 pm

2 stops28h 45m

Rio de Janeiro Santos Dumont

Tue 4/28

1:45 pm-9:51 pm

2 stops36h 06m

$789

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Mon 4/20

8:00 am-4:45 pm

2 stops28h 45m

Rio de Janeiro Santos Dumont

Mon 4/27

1:45 pm-9:51 pm

2 stops36h 06m

$813

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Tue 4/21

8:00 am-4:45 pm

2 stops28h 45m

Rio de Janeiro Santos Dumont

Tue 4/28

1:45 pm-9:51 pm

2 stops36h 06m

$813

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Sun 4/19

8:00 am-4:45 pm

2 stops28h 45m

Rio de Janeiro Santos Dumont

Sun 4/26

12:40 pm-9:51 pm

2 stops37h 11m

$818

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Wed 2/25

8:00 am-4:45 pm

2 stops27h 45m

Rio de Janeiro Santos Dumont

Tue 3/3

1:50 pm-10:16 pm

2 stops37h 26m

$902

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Fri 2/27

8:00 am-8:15 pm

2 stops31h 15m

Rio de Janeiro Santos Dumont

Tue 3/3

1:50 pm-10:16 pm

2 stops37h 26m

$902

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Wed 4/15

8:00 am-4:45 pm

2 stops28h 45m

Rio de Janeiro Santos Dumont

Wed 4/22

1:45 pm-9:51 pm

2 stops36h 06m

$913

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Wed 2/25

8:00 am-4:45 pm

2 stops27h 45m

Rio de Janeiro Santos Dumont

Sun 3/8

8:05 pm-9:48 pm

2 stops29h 43m

$932

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Fri 4/17

8:00 am-10:15 am

2 stops46h 15m

Rio de Janeiro Santos Dumont

Fri 4/24

1:45 pm-9:51 pm

2 stops36h 06m

$935

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 40 results
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Best time to book a flight from Washington to Santos Dumont

Have a flexible travel schedule? Discover the best time to fly to Santos Dumont from Washington 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 Washington to Rio de Janeiro Santos Dumont Airport
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Washington to Santos Dumont. 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 State of Washington to Rio de Janeiro Santos Dumont Airport?

    For as low as $1,331, Air Canada can have you in Rio de Janeiro Santos Dumont Airport from State of Washington in 22h 35m. The distance from State of Washington to Rio de Janeiro Santos Dumont Airport is about 6849 mi. 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 Washington to Santos Dumont that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington to Santos Dumont 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

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Alternative routes for Washington to Santos Dumont

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Rio de Janeiro–Galeão Intl flights
Miami to Rio de Janeiro–Galeão Intl flights
John F Kennedy Intl to Santos Dumont flights
Newark to Rio de Janeiro–Galeão Intl flights
LaGuardia to Rio de Janeiro–Galeão Intl flights
Dulles Intl to Rio de Janeiro–Galeão Intl flights
O'Hare Intl to Rio de Janeiro–Galeão Intl flights
Baltimore to Rio de Janeiro–Galeão Intl flights
Hobby to Rio de Janeiro–Galeão Intl flights
Newark to Santos Dumont flights
Reagan-National to Rio de Janeiro–Galeão Intl flights
Los Angeles to Rio de Janeiro–Galeão Intl flights
LaGuardia to Santos Dumont flights
Miami to Santos Dumont flights
Atlanta to Rio de Janeiro–Galeão Intl flights
Orlando to Rio de Janeiro–Galeão Intl flights
San Francisco to Rio de Janeiro–Galeão Intl flights
Dulles Intl to Santos Dumont flights
Los Angeles to Santos Dumont flights
O'Hare Intl to Santos Dumont flights
Dallas/Fort Worth to Rio de Janeiro–Galeão Intl flights
George Bush Intcntl to Rio de Janeiro–Galeão Intl flights
Boston to Rio de Janeiro–Galeão Intl flights
Orlando to Santos Dumont flights
Fort Lauderdale to Rio de Janeiro–Galeão Intl flights
Seattle to Rio de Janeiro–Galeão Intl flights
San Francisco to Santos Dumont flights
Boston to Santos Dumont flights
Midway to Rio de Janeiro–Galeão Intl flights
Fort Lauderdale to Santos Dumont flights
Austin to Rio de Janeiro–Galeão Intl flights
Dallas/Fort Worth to Santos Dumont flights
Atlanta to Santos Dumont flights
Austin to Santos Dumont flights
Raleigh to Rio de Janeiro–Galeão Intl flights
Seattle to Santos Dumont flights
Tampa to Rio de Janeiro–Galeão Intl flights
Ontario to Rio de Janeiro–Galeão Intl flights
Denver to Rio de Janeiro–Galeão Intl flights
Raleigh to Santos Dumont flights
Philadelphia to Rio de Janeiro–Galeão Intl flights
Love Field to Rio de Janeiro–Galeão Intl flights
Minneapolis to Rio de Janeiro–Galeão Intl flights
San Antonio to Rio de Janeiro–Galeão Intl flights
Denver to Santos Dumont flights
Philadelphia to Santos Dumont flights

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