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Cheap flights from Seattle to Rio de Janeiro from $427

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Rio de Janeiro departing on 9/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Air Canada Logo
7:15 am - 2:20 pmSEA-SDU
27h 05m2 stops
Air Canada Logo
11:25 am - 7:31 pmSDU-SEA
36h 06m2 stops
$923Air Canada
Find Deal
mar., sep. 9 - jue., sep. 18
Air Canada Logo
8:15 am - 2:20 pmSEA-SDU
25h 05m2 stops
Air Canada Logo
11:25 am - 9:56 pmSDU-SEA
39h 31m2 stops
$936Air Canada
Find Deal
lun., nov. 17 - lun., nov. 24
Logo
8:15 am - 2:20 pmSEA-SDU
25h 05m2 stops
Logo
8:30 am - 9:56 pmSDU-SEA
42h 26m2 stops
$946
Find Deal
jue., nov. 27 - dom., dic. 7
Logo
6:04 pm - 1:00 pmSEA-SDU
38h 56m3 stops
Logo
11:25 am - 9:45 pmSDU-SEA
38h 20m3 stops
$973
Find Deal
vie., oct. 3 - vie., oct. 17
United Airlines Logo
7:00 am - 2:20 pmSEA-SDU
26h 20m2 stops
United Airlines Logo
2:55 pm - 4:07 pmSDU-SEA
30h 12m2 stops
$1,147United Airlines
Find Deal
mié., nov. 26 - dom., dic. 7
Delta Logo
11:50 am - 1:15 pmSEA-SDU
20h 25m2 stops
Delta Logo
8:05 pm - 7:29 pmSDU-SEA
28h 24m2 stops
$1,427Delta
Find Deal
mié., nov. 26 - lun., dic. 8
United Airlines Logo
8:36 am - 2:20 pmSEA-SDU
24h 44m3 stops
United Airlines Logo
2:55 pm - 11:45 amSDU-SEA
25h 50m2 stops
$1,477United Airlines
Find Deal
mié., nov. 26 - dom., dic. 7
Delta Logo
7:20 am - 1:15 pmSEA-SDU
24h 55m2 stops
Delta Logo
8:05 pm - 12:25 pmSDU-SEA
21h 20m2 stops
$1,520Delta
Find Deal
jue., nov. 27 - lun., dic. 8
LATAM Airlines Logo
8:20 am - 12:35 pmSEA-SDU
23h 15m2 stops
LATAM Airlines Logo
4:40 pm - 6:57 pmSDU-SEA
31h 17m2 stops
$1,815LATAM Airlines
Find Deal
jue., dic. 25 - mié., dic. 31
LATAM Airlines Logo
8:00 am - 9:35 amSEA-SDU
20h 35m2 stops
LATAM Airlines Logo
2:00 pm - 12:24 pmSDU-SEA
27h 24m2 stops
$1,857LATAM Airlines
Find Deal
mié., dic. 24 - mié., dic. 31

Air Canada flights from Seattle to Rio de Janeiro Santos Dumont Airport

Our best Air Canada deals on Seattle to Rio de Janeiro Santos Dumont Airport flight tickets
Air Canada
Sep 9
SEA7:15 amSeattle/Tacoma Intl
27h 05m
2 stops
SDU2:20 pmRio de Janeiro Santos Dumont
Sep 18
SDU11:25 amRio de Janeiro Santos Dumont
36h 06m
2 stops
SEA7:31 pmSeattle/Tacoma Intl
$923
Find similar
Air Canada
Nov 17
SEA8:15 amSeattle/Tacoma Intl
25h 05m
2 stops
SDU2:20 pmRio de Janeiro Santos Dumont
Nov 24
SDU11:25 amRio de Janeiro Santos Dumont
39h 31m
2 stops
SEA9:56 pmSeattle/Tacoma Intl
$936
Find similar
Air Canada
Oct 3
SEA12:00 pmSeattle/Tacoma Intl
22h 20m
2 stops
SDU2:20 pmRio de Janeiro Santos Dumont
Oct 17
SDU11:25 amRio de Janeiro Santos Dumont
38h 20m
2 stops
SEA9:45 pmSeattle/Tacoma Intl
$998
Find similar

United Airlines flights from Seattle to Rio de Janeiro Santos Dumont Airport

Our best United Airlines deals on Seattle to Rio de Janeiro Santos Dumont Airport flight tickets
United Airlines
Nov 26
SEA7:00 amSeattle/Tacoma Intl
26h 20m
2 stops
SDU2:20 pmRio de Janeiro Santos Dumont
Dec 7
SDU2:55 pmRio de Janeiro Santos Dumont
30h 12m
2 stops
SEA4:07 pmSeattle/Tacoma Intl
$1,147
Find similar
United Airlines
Nov 26
SEA8:36 amSeattle/Tacoma Intl
24h 44m
3 stops
SDU2:20 pmRio de Janeiro Santos Dumont
Dec 7
SDU2:55 pmRio de Janeiro Santos Dumont
25h 50m
2 stops
SEA11:45 amSeattle/Tacoma Intl
$1,477
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Rio de Janeiro Santos Dumont Airport 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, momondo users made 832,500 searches. Data last updated agosto 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

Fly to

Route

Depart

Return

Price

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

mar. 9/9

7:15 am-2:20 pm

2 stops27h 05m

Rio de Janeiro Santos Dumont

jue. 9/18

11:25 am-7:31 pm

2 stops36h 06m

$923

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

lun. 11/17

8:15 am-2:20 pm

2 stops25h 05m

Rio de Janeiro Santos Dumont

lun. 11/24

11:25 am-9:56 pm

2 stops39h 31m

$936

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

jue. 11/27

8:15 am-2:20 pm

2 stops25h 05m

Rio de Janeiro Santos Dumont

dom. 12/7

8:30 am-9:56 pm

2 stops42h 26m

$946

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

vie. 10/3

6:04 pm-1:00 pm

3 stops38h 56m

Rio de Janeiro Santos Dumont

vie. 10/17

11:25 am-9:45 pm

3 stops38h 20m

$973

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

mié. 11/26

7:00 am-2:20 pm

2 stops26h 20m

Rio de Janeiro Santos Dumont

dom. 12/7

2:55 pm-4:07 pm

2 stops30h 12m

$1,147

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

mié. 11/26

11:50 am-1:15 pm

2 stops20h 25m

Rio de Janeiro Santos Dumont

lun. 12/8

8:05 pm-7:29 pm

2 stops28h 24m

$1,427

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

mié. 11/26

8:36 am-2:20 pm

3 stops24h 44m

Rio de Janeiro Santos Dumont

dom. 12/7

2:55 pm-11:45 am

2 stops25h 50m

$1,477

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

jue. 11/27

7:20 am-1:15 pm

2 stops24h 55m

Rio de Janeiro Santos Dumont

lun. 12/8

8:05 pm-12:25 pm

2 stops21h 20m

$1,520

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

jue. 12/25

8:20 am-12:35 pm

2 stops23h 15m

Rio de Janeiro Santos Dumont

mié. 12/31

4:40 pm-6:57 pm

2 stops31h 17m

$1,815

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

mié. 12/24

8:00 am-9:35 am

2 stops20h 35m

Rio de Janeiro Santos Dumont

mié. 12/31

2:00 pm-12:24 pm

2 stops27h 24m

$1,857

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Seattle to Rio de Janeiro Santos Dumont Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Seattle/Tacoma Intl to Rio de Janeiro Santos Dumont?

United Airlines, LATAM Airlines, and Air Canada are the most popular carriers operating from Seattle/Tacoma Intl to Rio de Janeiro Santos Dumont

When to book flights from Seattle to Rio de Janeiro Santos Dumont Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Rio de Janeiro Santos Dumont Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Rio de Janeiro Santos Dumont Airport (SEA to SDU) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Rio de Janeiro Santos Dumont Airport

Best Price Found

$427

Fastest flight time

20h 15m

Direct flights

None
The best one-way flight to Rio de Janeiro Santos Dumont Airport from Seattle in the past 72 hours is $427. The best round-trip flight deal from Seattle to Rio de Janeiro Santos Dumont Airport found on momondo in the last 72 hours is $923.
The fastest flight from Seattle to Rio de Janeiro Santos Dumont Airport takes 20h 15m
There are no direct flights from Seattle to Rio de Janeiro Santos Dumont Airport. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Rio de Janeiro Santos Dumont Airport.
Search flight deals

  • How far is Seattle/Tacoma Intl to Rio de Janeiro Santos Dumont by plane?

    Seattle/Tacoma Intl and Rio de Janeiro Santos Dumont are 6893.6 mi apart from one another. Flights usually cover this in 20h 25m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Rio de Janeiro Santos Dumont Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Rio de Janeiro Santos Dumont Airport are updated daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Rio de Janeiro Santos Dumont Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Rio de Janeiro Santos Dumont Airport.

  • What documentation or ID do you need to fly to Rio de Janeiro Santos Dumont Airport?

    The travel and health documents you'll need for your trip to Rio de Janeiro Santos Dumont Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Rio de Janeiro Santos Dumont Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Rio de Janeiro?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Rio de Janeiro. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Seattle to Rio de Janeiro with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Seattle to Rio de Janeiro flights to just show those with flexible booking policies.

How can momondo help me find flights from Seattle to Rio de Janeiro?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Rio de Janeiro from Seattle.

I’m not ready to book a flight from Seattle to Rio de Janeiro right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Seattle to Rio de Janeiro now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Rio de Janeiro and let you know when they change.

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