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Santos Dumont

$363+ Cheap flights from Seattle (SEA) 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SDU
Jan 13 — Jan 201
Tue 1/13
Tue 1/20
1 adult, Economy
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Cheap flight deals from Seattle to Santos Dumont

Cheapest flights from Seattle to Santos Dumont
Explore the most affordable flight options available from Seattle to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 14, 2025.

This Travelocity deal was found by Cheapflights users on 12/13. 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 12/248:00 amSEA - SDU
2 stops20h 25mMultiple Airlines
Wed 12/318:05 pmSDU - SEA
2 stops27h 05mMultiple Airlines
Deal found 12/13$1,723
This Ovago deal was found by Cheapflights users on 12/12. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2310:06 pmSEA - SDU
2 stops29h 39mGOL
Tue 1/66:00 amSDU - SEA
2 stops22h 42mGOL
Deal found 12/12$1,886
This KAYAK deal was found by Cheapflights users on 12/13. 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.
Wed 12/176:05 amSEA - SDU
2 stops22h 20mLATAM Airlines
Fri 12/198:05 pmSDU - SEA
2 stops23h 10mLATAM Airlines
Deal found 12/13$2,064
This FlightHub deal was found by Cheapflights users on 12/12. 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 12/1211:25 pmSEA - SDU
2 stops36h 00mLATAM Airlines
Fri 12/198:05 pmSDU - SEA
2 stops23h 10mLATAM Airlines
Deal found 12/12$2,168
This GOL deal was found by Cheapflights users on 12/12. 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 GOL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:43 pmSEA - SDU
2 stops44h 27mGOL
Tue 1/66:00 amSDU - SEA
2 stops22h 42mGOL
Deal found 12/12$2,273
This GOL deal was found by Cheapflights users on 12/12. 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 GOL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:43 pmSEA - SDU
2 stops44h 27mGOL
Wed 1/78:25 pmSDU - SEA
2 stops32h 17mGOL
Deal found 12/12$2,453
This GOL deal was found by Cheapflights users on 12/12. 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 GOL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1410:08 pmSEA - SDU
2 stops31h 37mGOL
Mon 1/128:25 pmSDU - SEA
2 stops32h 17mGOL
Deal found 12/12$2,486

Find flight deals from Seattle to Santos Dumont

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Santos Dumont (SDU). 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 December 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$768
(Gotogate)

One-way from

$363
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$1,780
Provider with most accurate pricing for Seattle/Tacoma Intl-Rio de Janeiro Santos Dumont flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Rio de Janeiro Santos Dumont flights.
Search Deals
From Seattle/Tacoma Intl to Rio de Janeiro Santos Dumont
Search Deals
One-way flight from Seattle/Tacoma Intl to Rio de Janeiro Santos Dumont
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($121 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle 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 December 14, 2025.
Use the filters below to find and compare flights from Seattle to Rio de Janeiro Santos Dumont Airport that are best for you.

Fly from

Seattle

Fly to

Santos Dumont

Route

Depart

Return

Price

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Tue 4/28

8:00 am-4:45 pm

2 stops28h 45m

Rio de Janeiro Santos Dumont

Wed 5/13

1:45 pm-7:37 pm

2 stops33h 52m

$768

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Thu 4/16

8:00 am-4:45 pm

2 stops28h 45m

Rio de Janeiro Santos Dumont

Sun 4/26

8:30 am-9:51 pm

2 stops41h 21m

$796

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Sat 4/4

8:00 am-5:45 pm

2 stops29h 45m

Rio de Janeiro Santos Dumont

Sun 4/12

8:30 am-9:51 pm

2 stops41h 21m

$896

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Wed 3/4

8:10 am-4:40 pm

2 stops27h 30m

Rio de Janeiro Santos Dumont

Wed 3/18

1:45 pm-10:16 pm

2 stops36h 31m

$906

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Mon 2/2

8:10 am-2:30 pm

2 stops25h 20m

Rio de Janeiro Santos Dumont

Mon 2/9

11:20 am-10:16 pm

2 stops39h 56m

$1,006

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Thu 1/22

5:50 am-6:10 pm

3 stops31h 20m

Rio de Janeiro Santos Dumont

Wed 2/4

1:05 pm-2:31 pm

3 stops30h 26m

$1,146

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Tue 3/3

5:55 pm-7:40 am

3 stops32h 45m

$363

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Tue 3/31

10:20 am-11:20 am

2 stops45h 00m

$406

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Tue 1/13

6:53 pm-7:05 am

3 stops31h 12m

$430

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Sun 2/15

5:55 pm-7:35 am

3 stops32h 40m

$465

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 15 results
1
2
  • Most accurate provider: When it comes to deals on Seattle-Rio de Janeiro Santos Dumont Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Rio de Janeiro Santos Dumont Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Rio de Janeiro Santos Dumont Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Rio de Janeiro Santos Dumont Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Rio de Janeiro Santos Dumont Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Santos Dumont

Have a flexible travel schedule? Discover the best time to fly to Santos Dumont from Seattle 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 Seattle to Santos Dumont. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Rio de Janeiro Santos Dumont?

    If you book a flight to Rio de Janeiro Santos Dumont from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 0 flights from Seattle/Tacoma Intl to Rio de Janeiro Santos Dumont per day from 0 different airlines.

  • Can I find deals for flights from Seattle to Santos Dumont that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Santos Dumont

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Rio de Janeiro–Galeão Intl flights
Portland to Rio de Janeiro–Galeão Intl flights
Portland to Santos Dumont flights

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