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Santos Dumont

$389+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SDU
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap 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 September 11, 2025.

Round-trip from

$789
(Mytrip)

One-way from

$389
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$1,393
From Seattle/Tacoma Intl to Rio de Janeiro Santos Dumont
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One-way flight from Seattle/Tacoma Intl to Rio de Janeiro Santos Dumont
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Highest demand for flights based on searches. 3% potential increase in price ($53 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($37 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 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 September 11, 2025.

This Mytrip deal was found by Cheapflights users on 9/9. 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 11/265:50 amSEA - SDU
3 stops29h 55mAir Canada
Tue 12/21:45 pmSDU - SEA
3 stops34h 31mAir Canada
Deal found 9/9$789
This Mytrip deal was found by Cheapflights users on 9/9. 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 10/2410:00 amSEA - SDU
3 stops23h 50mMultiple Airlines
Fri 10/312:00 pmSDU - SEA
3 stops33h 16mMultiple Airlines
Deal found 9/9$977
This Mytrip deal was found by Cheapflights users on 9/9. 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 12/28:15 amSEA - SDU
3 stops27h 30mMultiple Airlines
Tue 12/91:45 pmSDU - SEA
3 stops29h 35mMultiple Airlines
Deal found 9/9$992
This Air Canada deal was found by Cheapflights users on 9/10. 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 9/2912:00 pmSEA - SDU
2 stops22h 20mMultiple Airlines
Tue 11/181:45 pmSDU - SEA
2 stops37h 31mMultiple Airlines
Deal found 9/10$1,041
This Mytrip deal was found by Cheapflights users on 9/9. 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 10/228:40 amSEA - SDU
3 stops25h 40mMultiple Airlines
Fri 10/311:45 pmSDU - SEA
3 stops28h 46mMultiple Airlines
Deal found 9/9$1,060
This Mytrip deal was found by Cheapflights users on 9/11. 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 10/217:30 amSEA - SDU
3 stops34h 50mMultiple Airlines
Fri 10/311:30 pmSDU - SEA
3 stops29h 08mMultiple Airlines
Deal found 9/11$1,088
This Mytrip deal was found by Cheapflights users on 9/9. 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 10/3110:05 amSEA - SDU
3 stops24h 55mMultiple Airlines
Fri 11/148:15 amSDU - SEA
3 stops35h 16mMultiple Airlines
Deal found 9/9$1,114

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 September 11, 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

Wed 11/26

5:50 am-4:45 pm

3 stops29h 55m

Rio de Janeiro Santos Dumont

Tue 12/2

1:45 pm-7:16 pm

3 stops34h 31m

$789

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Fri 10/24

10:00 am-1:50 pm

3 stops23h 50m

Rio de Janeiro Santos Dumont

Fri 10/31

2:00 pm-7:16 pm

3 stops33h 16m

$977

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Tue 12/2

8:15 am-4:45 pm

3 stops27h 30m

Rio de Janeiro Santos Dumont

Tue 12/9

1:45 pm-2:20 pm

3 stops29h 35m

$992

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Mon 9/29

12:00 pm-2:20 pm

2 stops22h 20m

Rio de Janeiro Santos Dumont

Tue 11/18

1:45 pm-10:16 pm

2 stops37h 31m

$1,041

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Wed 10/22

8:40 am-2:20 pm

3 stops25h 40m

Rio de Janeiro Santos Dumont

Fri 10/31

1:45 pm-2:31 pm

3 stops28h 46m

$1,060

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Tue 10/21

7:30 am-10:20 pm

3 stops34h 50m

Rio de Janeiro Santos Dumont

Fri 10/31

1:30 pm-2:38 pm

3 stops29h 08m

$1,088

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Fri 10/31

8:35 am-10:25 pm

2 stops33h 50m

Rio de Janeiro Santos Dumont

Fri 11/14

6:50 pm-10:10 pm

2 stops32h 20m

$1,123

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Wed 10/15

1:02 pm-2:20 pm

3 stops45h 18m

$389

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Sat 10/25

8:43 pm-10:45 am

3 stops34h 02m

$391

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Mon 10/20

1:02 pm-7:40 am

3 stops38h 38m

$421

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 12 results
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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.

  • How long is the flight from Seattle to Rio de Janeiro Santos Dumont Airport?

    A quick flight from Seattle to Rio de Janeiro Santos Dumont Airport can take about 29h 55m. Air Canada provides one of the quickest options available for as low as $789. Airlines will cover a distance of 6888 mi.

  • 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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