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Cheap flights from Seattle to Rio de Janeiro from $398

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 12/1. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:10 am - 2:20 pmSEA-SDU
25h 10m2 stops
Multiple Airlines Logo
11:25 am - 10:16 pmSDU-SEA
38h 51m2 stops
$806Multiple Airlines
Find Deal
mié., mar. 4 - mié., mar. 18
Air Canada Logo
8:10 am - 2:20 pmSEA-SDU
25h 10m2 stops
Air Canada Logo
11:20 am - 10:16 pmSDU-SEA
39h 56m2 stops
$896Air Canada
Find Deal
dom., feb. 8 - lun., feb. 16
Multiple Airlines Logo
8:55 am - 2:10 pmSEA-SDU
25h 15m2 stops
Multiple Airlines Logo
6:00 am - 11:24 pmSDU-SEA
21h 24m2 stops
$900Multiple Airlines
Find Deal
jue., mar. 12 - sáb., mar. 21
Air Canada Logo
8:10 am - 4:40 pmSEA-SDU
27h 30m2 stops
Air Canada Logo
1:45 pm - 10:16 pmSDU-SEA
37h 31m2 stops
$996Air Canada
Find Deal
jue., nov. 20 - lun., dic. 1
Air Canada Logo
8:10 am - 8:15 pmSEA-SDU
31h 05m2 stops
Air Canada Logo
1:45 pm - 10:16 pmSDU-SEA
37h 31m2 stops
$1,056Air Canada
Find Deal
vie., nov. 21 - mié., dic. 3
Azul Logo
11:59 pm - 8:15 pmSEA-SDU
39h 16m2 stops
Azul Logo
11:20 am - 12:03 pmSDU-SEA
29h 43m2 stops
$1,210Azul
Find Deal
jue., dic. 4 - mié., dic. 17
LATAM Airlines Logo
6:00 am - 9:35 amSEA-SDU
22h 35m2 stops
LATAM Airlines Logo
2:00 pm - 10:26 amSDU-SEA
25h 26m2 stops
$1,259LATAM Airlines
Find Deal
sáb., dic. 6 - sáb., ene. 3
United Airlines Logo
12:39 pm - 4:40 pmSEA-SDU
23h 01m2 stops
United Airlines Logo
2:50 pm - 11:45 amSDU-SEA
25h 55m2 stops
$1,322United Airlines
Find Deal
jue., nov. 27 - dom., dic. 7
United Airlines Logo
12:39 pm - 4:40 pmSEA-SDU
23h 01m2 stops
United Airlines Logo
2:50 pm - 11:45 amSDU-SEA
25h 55m2 stops
$1,323United Airlines
Find Deal
jue., nov. 27 - dom., dic. 7
LATAM Airlines Logo
7:10 am - 5:00 pmSEA-SDU
28h 50m2 stops
LATAM Airlines Logo
11:10 am - 10:12 pmSDU-SEA
40h 02m2 stops
$1,785LATAM Airlines
Find Deal
mié., dic. 24 - lun., ene. 5

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
Feb 8
SEA8:10 amSeattle/Tacoma Intl
25h 10m
2 stops
SDU2:20 pmRio de Janeiro Santos Dumont
Feb 16
SDU11:20 amRio de Janeiro Santos Dumont
39h 56m
2 stops
SEA10:16 pmSeattle/Tacoma Intl
$896
Find similar
Air Canada
Nov 20
SEA8:10 amSeattle/Tacoma Intl
27h 30m
2 stops
SDU4:40 pmRio de Janeiro Santos Dumont
Dec 1
SDU1:45 pmRio de Janeiro Santos Dumont
37h 31m
2 stops
SEA10:16 pmSeattle/Tacoma Intl
$996
Find similar
Air Canada
Nov 21
SEA8:10 amSeattle/Tacoma Intl
31h 05m
2 stops
SDU8:15 pmRio de Janeiro Santos Dumont
Dec 3
SDU1:45 pmRio de Janeiro Santos Dumont
37h 31m
2 stops
SEA10:16 pmSeattle/Tacoma Intl
$1,056
Find similar

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

Our best LATAM Airlines deals on Seattle to Rio de Janeiro Santos Dumont Airport flight tickets
LATAM Airlines
Dec 6
SEA6:00 amSeattle/Tacoma Intl
22h 35m
2 stops
SDU9:35 amRio de Janeiro Santos Dumont
Jan 3
SDU2:00 pmRio de Janeiro Santos Dumont
25h 26m
2 stops
SEA10:26 amSeattle/Tacoma Intl
$1,259
Find similar
LATAM Airlines
Oct 16
SEA7:19 amSeattle/Tacoma Intl
26h 01m
2 stops
SDU1:20 pmRio de Janeiro Santos Dumont
Oct 23
SDU8:20 pmRio de Janeiro Santos Dumont
22h 24m
2 stops
SEA2:44 pmSeattle/Tacoma Intl
$1,629
Find similar
LATAM Airlines
Dec 24
SEA7:10 amSeattle/Tacoma Intl
28h 50m
2 stops
SDU5:00 pmRio de Janeiro Santos Dumont
Jan 5
SDU11:10 amRio de Janeiro Santos Dumont
40h 02m
2 stops
SEA10:12 pmSeattle/Tacoma Intl
$1,785
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 octubre 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

mié. 3/4

8:10 am-2:20 pm

2 stops25h 10m

Rio de Janeiro Santos Dumont

mié. 3/18

11:25 am-10:16 pm

2 stops38h 51m

$806

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

dom. 2/8

8:10 am-2:20 pm

2 stops25h 10m

Rio de Janeiro Santos Dumont

lun. 2/16

11:20 am-10:16 pm

2 stops39h 56m

$896

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

jue. 3/12

8:55 am-2:10 pm

2 stops25h 15m

Rio de Janeiro Santos Dumont

sáb. 3/21

6:00 am-11:24 pm

2 stops21h 24m

$900

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

jue. 11/20

8:10 am-4:40 pm

2 stops27h 30m

Rio de Janeiro Santos Dumont

lun. 12/1

1:45 pm-10:16 pm

2 stops37h 31m

$996

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

vie. 11/21

8:10 am-8:15 pm

2 stops31h 05m

Rio de Janeiro Santos Dumont

mié. 12/3

1:45 pm-10:16 pm

2 stops37h 31m

$1,056

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

jue. 12/4

11:59 pm-8:15 pm

2 stops39h 16m

Rio de Janeiro Santos Dumont

mié. 12/17

11:20 am-12:03 pm

2 stops29h 43m

$1,210

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

sáb. 12/6

6:00 am-9:35 am

2 stops22h 35m

Rio de Janeiro Santos Dumont

sáb. 1/3

2:00 pm-10:26 am

2 stops25h 26m

$1,259

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

jue. 11/27

12:39 pm-4:40 pm

2 stops23h 01m

Rio de Janeiro Santos Dumont

dom. 12/7

2:50 pm-11:45 am

2 stops25h 55m

$1,322

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

jue. 11/27

12:39 pm-4:40 pm

2 stops23h 01m

Rio de Janeiro Santos Dumont

dom. 12/7

2:50 pm-11:45 am

2 stops25h 55m

$1,323

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

mié. 12/24

7:10 am-5:00 pm

2 stops28h 50m

Rio de Janeiro Santos Dumont

lun. 1/5

11:10 am-10:12 pm

2 stops40h 02m

$1,785

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?

Air Canada and United Airlines 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

Direct flights

None
There are no direct flights from Seattle to Rio de Janeiro Santos Dumont Airport. There are no popular flight routes from Seattle to 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 19h 17m, 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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