What are the cheapest airlines to fly from Seattle to Rio de Janeiro Santos Dumont Airport one-way?

$654 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on United Airlines and LATAM Airlines, with prices starting from $714 and $737, respectively.

In terms of precipitation, rainfall in Rio de Janeiro Santos Dumont Airport ranges from 1.6 - 5.1 inches per month. January is typically the wettest month, when rainfall can reach 5.1 in. July is typically the driest time to visit Rio de Janeiro Santos Dumont Airport when rainfall is around 1.6 in.

If weather is an important factor for your trip to Rio de Janeiro Santos Dumont Airport, use this chart to help with planning. For those seeking warmer temperatures, February is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 69.8 F).

How far in advance should I book a flight from Seattle to Rio de Janeiro Santos Dumont Airport?

Users have found that booking a flight from Seattle to Rio de Janeiro Santos Dumont Airport at least 8 days early can save you up to 58% on average compared to booking a flight this week. If booking 8 days before your flight isn’t an option for you, users have found flights from Seattle to Rio de Janeiro Santos Dumont Airport for as little as $770 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $1,223 for flights departing within the next 3 days.

What is the cheapest month to fly from Seattle to Rio de Janeiro Santos Dumont Airport?

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, October can be a great choice for travel to Rio de Janeiro Santos Dumont Airport. Flights to Rio de Janeiro Santos Dumont Airport from Seattle in October are about $1,273 on average during October, but can be found for as low as $796.

What is the cheapest time of day to fly from SEA to SDU?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Rio de Janeiro Santos Dumont Airport as you normally would.

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.

$424+ Flights from Seattle to Rio de Janeiro Santos Dumont Airport, Brazil

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Cheap flight deals from Seattle to Santos Dumont

Round-trip from	$821 (Air Canada)
One-way from	$424 (Kiwi.com)
Popular in	July
Cheapest in	October
Average price	$1,548

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

Search Deals

Highest demand for flights based on searches. 10% potential increase in price ($143 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).

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Average for round-trip flights in July 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 July 31, 2025.

Tue 9/167:15 amSEA - SDU

2 stops27h 05mAir Canada

Wed 9/247:55 amSDU - SEA

2 stops39h 36mAir Canada

Deal found 7/29

$821

Fri 9/128:37 amSEA - SDU

2 stops32h 48mMultiple Airlines

Fri 9/196:50 pmSDU - SEA

2 stops31h 32mMultiple Airlines

Deal found 7/28

$984

Mon 11/1711:50 amSEA - SDU

2 stops23h 10mLATAM Airlines

Wed 12/38:05 pmSDU - SEA

2 stops23h 22mLATAM Airlines

Deal found 7/30

$1,121

Thu 11/2710:53 amSEA - SDU

2 stops22h 27mUnited Airlines

Sun 12/72:55 pmSDU - SEA

2 stops25h 50mUnited Airlines

Deal found 7/30

$1,145

Sat 11/2211:35 pmSEA - SDU

2 stops32h 40mDelta

Mon 12/18:05 pmSDU - SEA

2 stops23h 07mDelta

Deal found 7/30

$1,325

Best flights from Seattle to Santos Dumont
Discover carefully curated flight deals from Seattle to Santos Dumont that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2025.

Tue 9/167:15 amSEA - SDU

2 stops27h 05mAir Canada

Wed 9/247:55 amSDU - SEA

2 stops39h 36mAir Canada

Deal found 7/29

$821

Fri 9/128:37 amSEA - SDU

2 stops32h 48mMultiple Airlines

Fri 9/196:50 pmSDU - SEA

2 stops31h 32mMultiple Airlines

Deal found 7/28

$984

Mon 11/1711:50 amSEA - SDU

2 stops23h 10mLATAM Airlines

Wed 12/38:05 pmSDU - SEA

2 stops23h 22mLATAM Airlines

Deal found 7/30

$1,121

Thu 11/2710:53 amSEA - SDU

2 stops22h 27mUnited Airlines

Sun 12/72:55 pmSDU - SEA

2 stops25h 50mUnited Airlines

Deal found 7/30

$1,145

Sat 11/2211:35 pmSEA - SDU

2 stops32h 40mDelta

Mon 12/18:05 pmSDU - SEA

2 stops23h 07mDelta

Deal found 7/30

$1,325

Last-minute flights from Seattle to Santos Dumont
Discover last-minute flight deals from Seattle to Santos Dumont. Data last updated July 31, 2025 and is based on user searches.

Mon 8/115:30 pmSEA - SDU

3 stops24h 55mMultiple Airlines

Thu 8/145:25 pmSDU - SEA

3 stops33h 25mMultiple Airlines

Deal found 7/29

$1,088

Tue 8/197:20 amSEA - SDU

2 stops27h 00mAir Canada

Fri 12/1911:25 amSDU - SEA

2 stops39h 31mAir Canada

Deal found 7/30

$1,465

Thu 8/217:20 amSEA - SDU

2 stops22h 15mLATAM Airlines

Tue 8/268:20 pmSDU - SEA

2 stops26h 40mLATAM Airlines

Deal found 7/29

$5,757

One-way flights from Seattle to Santos Dumont
Search for one-way flight options from Seattle to Santos Dumont. Find affordable one-way fares based on user searches. Data last updated July 31, 2025.

Mon 12/111:31 pmSEA - SDU

3 stops29h 29mMultiple Airlines

Deal found 7/30

$424

Mon 12/18:15 amSEA - SDU

2 stops25h 05mAir Canada

Deal found 7/30

$654

Tue 10/218:30 amSEA - SDU

3 stops25h 50mUnited Airlines

Deal found 7/31

$714

Sun 1/410:15 amSEA - SDU

2 stops22h 00mLATAM Airlines

Deal found 7/30

$737

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Tue 9/16

7:15 am-2:20 pm

2 stops27h 05m

Rio de Janeiro Santos Dumont

Wed 9/24

7:55 am-7:31 pm

2 stops39h 36m

$821

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Fri 9/12

8:37 am-9:25 pm

2 stops32h 48m

Rio de Janeiro Santos Dumont

Fri 9/19

6:50 pm-10:22 pm

2 stops31h 32m

$984

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Mon 11/17

11:50 am-4:00 pm

2 stops23h 10m

Rio de Janeiro Santos Dumont

Wed 12/3

8:05 pm-2:27 pm

2 stops23h 22m

$1,121

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Thu 11/27

10:53 am-2:20 pm

2 stops22h 27m

Rio de Janeiro Santos Dumont

Sun 12/7

2:55 pm-11:45 am

2 stops25h 50m

$1,145

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Sat 11/22

11:35 pm-1:15 pm

2 stops32h 40m

Rio de Janeiro Santos Dumont

Mon 12/1

8:05 pm-2:12 pm

2 stops23h 07m

$1,325

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Mon 12/1

11:31 pm-10:00 am

3 stops29h 29m

$424

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Mon 12/1

8:15 am-2:20 pm

2 stops25h 05m

$654

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Tue 10/21

8:30 am-2:20 pm

3 stops25h 50m

$714

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Sun 1/4

10:15 am-1:15 pm

2 stops22h 00m

$737

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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.

Reviews of airlines servicing Santos Dumont

See what other customers who have flown with Delta, LATAM Airlines, and United Airlines from Seattle to Rio de Janeiro Santos Dumont Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,980 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

LATAM Airlines

7.5

Good

1,822 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,896 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Air Canada

7.1

Good

9,837 reviews

Delta

8.0

Very good

7,980 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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.
What are the cheapest airlines to fly from Seattle to Rio de Janeiro Santos Dumont Airport one-way?
$654 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on United Airlines and LATAM Airlines, with prices starting from $714 and $737, respectively.
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.

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$424+ 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Santos Dumont with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Seattle to Santos Dumont

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Seattle to Santos Dumont

Cheapest flights from Seattle to Santos DumontExplore 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 July 31, 2025.

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 July 31, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Rio de Janeiro Santos Dumont Airport that are best for you.

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.

Reviews of airlines servicing Santos Dumont

See what other customers who have flown with Delta, LATAM Airlines, and United Airlines from Seattle to Rio de Janeiro Santos Dumont Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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?

What are the cheapest airlines to fly from Seattle to Rio de Janeiro Santos Dumont Airport one-way?

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Santos Dumont

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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 July 31, 2025.