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

To save up to 58% on this flight, we recommend booking at least 8 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from State of Washington to Rio de Janeiro Santos Dumont Airport from $770 1-2 weeks out and tickets from $1,223 for flights departing within the next 72 hours.

What is the cheapest month to fly from State of Washington 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 State of Washington in October are about $1,270 on average during October, but can be found for as low as $796.

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

When flying from State of Washington to Rio de Janeiro Santos Dumont Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Washington 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.

$414+ Flights from Washington to Rio de Janeiro Santos Dumont Airport, Brazil

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Cheap flight deals from Washington to Santos Dumont

Round-trip from	$828 (Air Canada)
One-way from	$414 (Kiwi.com)
Popular in	July
Cheapest in	October
Average price	$1,454

From Washington to Rio de Janeiro Santos Dumont

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One-way flight from Washington to Rio de Janeiro Santos Dumont

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($119 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($24 potential savings vs. average RT price).

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Average for round-trip flights in June 2025

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Find flight deals from Washington to Santos Dumont

Cheapest flights from Washington to Santos Dumont
Explore the most affordable flight options available from Washington to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on juni 23, 2025.

tir. 8/127:20 amSEA - SDU

2 stops27h 00mAir Canada

tir. 8/1911:25 amSDU - SEA

2 stops27h 35mAir Canada

Deal found 6/20

$828

tor. 9/46:19 pmSEA - SDU

3 stops34h 51mMultiple Airlines

lør. 9/136:20 pmSDU - SEA

3 stops26h 50mMultiple Airlines

Deal found 6/21

$900

tir. 8/128:08 pmSEA - SDU

2 stops34h 32mGOL

tor. 8/2111:35 amSDU - SEA

2 stops40h 39mGOL

Deal found 6/22

$1,133

søn. 7/2711:18 pmPDX - SDU

3 stops31h 47mMultiple Airlines

lør. 8/166:50 pmSDU - PDX

3 stops28h 07mMultiple Airlines

Deal found 6/22

$1,145

tor. 10/27:20 amSEA - SDU

2 stops22h 15mLATAM Airlines

søn. 10/198:20 pmSDU - SEA

2 stops22h 07mLATAM Airlines

Deal found 6/23

$1,145

lør. 8/95:00 amSEA - SDU

2 stops26h 00mUnited Airlines

søn. 8/173:00 pmSDU - SEA

2 stops24h 37mUnited Airlines

Deal found 6/20

$1,216

fre. 8/86:15 amPDX - SDU

2 stops23h 20mLATAM Airlines

fre. 8/298:20 pmSDU - PDX

2 stops19h 19mLATAM Airlines

Deal found 6/21

$1,732

tor. 8/2811:35 amSEA - SDU

2 stops22h 05mDelta

fre. 9/58:20 pmSDU - SEA

2 stops23h 58mDelta

Deal found 6/20

$2,106

Best flights from Washington to Santos Dumont
Discover carefully curated flight deals from Washington to Santos Dumont that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated juni 23, 2025.

tir. 8/127:20 amSEA - SDU

2 stops27h 00mAir Canada

tir. 8/1911:25 amSDU - SEA

2 stops27h 35mAir Canada

Deal found 6/20

$828

tor. 9/46:19 pmSEA - SDU

3 stops34h 51mMultiple Airlines

lør. 9/136:20 pmSDU - SEA

3 stops26h 50mMultiple Airlines

Deal found 6/21

$900

tir. 8/128:08 pmSEA - SDU

2 stops34h 32mGOL

tor. 8/2111:35 amSDU - SEA

2 stops40h 39mGOL

Deal found 6/22

$1,133

tor. 10/27:20 amSEA - SDU

2 stops22h 15mLATAM Airlines

søn. 10/198:20 pmSDU - SEA

2 stops22h 07mLATAM Airlines

Deal found 6/23

$1,145

lør. 8/95:00 amSEA - SDU

2 stops26h 00mUnited Airlines

søn. 8/173:00 pmSDU - SEA

2 stops24h 37mUnited Airlines

Deal found 6/20

$1,216

tor. 8/2811:35 amSEA - SDU

2 stops22h 05mDelta

fre. 9/58:20 pmSDU - SEA

2 stops23h 58mDelta

Deal found 6/20

$2,106

søn. 7/2711:18 pmPDX - SDU

3 stops31h 47mMultiple Airlines

lør. 8/166:50 pmSDU - PDX

3 stops28h 07mMultiple Airlines

Deal found 6/22

$1,145

fre. 8/86:15 amPDX - SDU

2 stops23h 20mLATAM Airlines

fre. 8/298:20 pmSDU - PDX

2 stops19h 19mLATAM Airlines

Deal found 6/21

$1,732

Last-minute flights from Washington to Santos Dumont
Discover last-minute flight deals from Washington to Santos Dumont. Data last updated juni 23, 2025 and is based on user searches.

tor. 6/268:01 pmSEA - SDU

2 stops32h 44mGOL

tor. 7/38:30 pmSDU - SEA

2 stops31h 17mGOL

Deal found 6/21

$2,246

fre. 7/115:30 pmSEA - SDU

3 stops24h 55mMultiple Airlines

søn. 7/1311:25 amSDU - SEA

2 stops27h 35mMultiple Airlines

Deal found 6/21

$1,456

lør. 7/126:00 amSEA - SDU

2 stops23h 35mDelta

lør. 7/198:20 pmSDU - SEA

2 stops19h 49mDelta

Deal found 6/22

$3,908

søn. 7/2711:18 pmPDX - SDU

3 stops31h 47mMultiple Airlines

lør. 8/166:50 pmSDU - PDX

3 stops28h 07mMultiple Airlines

Deal found 6/22

$1,145

søn. 7/2711:17 amPDX - SDU

2 stops22h 03mLATAM Airlines

lør. 8/168:20 pmSDU - PDX

2 stops20h 21mLATAM Airlines

Deal found 6/22

$6,644

One-way flights from Washington to Santos Dumont
Search for one-way flight options from Washington to Santos Dumont. Find affordable one-way fares based on user searches. Data last updated juni 23, 2025.

tir. 8/197:55 pmSEA - SDU

3 stops32h 45mMultiple Airlines

Deal found 6/22

$414

man. 12/1511:00 pmPDX - SDU

3 stops52h 30mMultiple Airlines

Deal found 6/22

$532

tir. 10/2110:50 amSEA - SDU

2 stops23h 30mUnited Airlines

Deal found 6/21

$704

tir. 12/168:00 amSEA - SDU

2 stops24h 15mLATAM Airlines

Deal found 6/22

$714

søn. 10/57:00 amPDX - SDU

2 stops26h 40mLATAM Airlines

Deal found 6/21

$766

man. 9/112:54 pmPDX - SDU

2 stops21h 26mUnited Airlines

Deal found 6/22

$775

man. 12/157:20 amSEA - SDU

2 stops24h 55mDelta

Deal found 6/22

$849

man. 6/308:01 pmSEA - SDU

2 stops22h 24mGOL

Deal found 6/22

$891

tor. 12/187:30 amSEA - SDU

2 stops25h 50mAir Canada

Deal found 6/22

$1,193

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington 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

tir. 8/12

7:20 am-2:20 pm

2 stops27h 00m

Rio de Janeiro Santos Dumont

tir. 8/19

11:25 am-11:00 am

2 stops27h 35m

$828

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

tor. 9/4

6:19 pm-9:10 am

3 stops34h 51m

Rio de Janeiro Santos Dumont

lør. 9/13

6:20 pm-5:10 pm

3 stops26h 50m

$900

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

tir. 8/12

8:08 pm-10:40 am

2 stops34h 32m

Rio de Janeiro Santos Dumont

tor. 8/21

11:35 am-12:14 am

2 stops40h 39m

$1,133

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

tor. 10/2

7:20 am-9:35 am

2 stops22h 15m

Rio de Janeiro Santos Dumont

søn. 10/19

8:20 pm-2:27 pm

2 stops22h 07m

$1,145

PortlandRio de Janeiro

PDX - SDU

PDXSDU

Portland

søn. 7/27

11:18 pm-11:05 am

3 stops31h 47m

Rio de Janeiro Santos Dumont

lør. 8/16

6:50 pm-6:57 pm

3 stops28h 07m

$1,145

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

lør. 8/9

5:00 am-11:00 am

2 stops26h 00m

Rio de Janeiro Santos Dumont

søn. 8/17

3:00 pm-11:37 am

2 stops24h 37m

$1,216

PortlandRio de Janeiro

PDX - SDU

PDXSDU

Portland

fre. 8/8

6:15 am-9:35 am

2 stops23h 20m

Rio de Janeiro Santos Dumont

fre. 8/29

8:20 pm-11:39 am

2 stops19h 19m

$1,732

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

tor. 8/28

11:35 am-1:40 pm

2 stops22h 05m

Rio de Janeiro Santos Dumont

fre. 9/5

8:20 pm-4:18 pm

2 stops23h 58m

$2,106

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

tir. 8/19

7:55 pm-8:40 am

3 stops32h 45m

$414

PortlandRio de Janeiro

PDX - SDU

PDXSDU

Portland

man. 12/15

11:00 pm-8:30 am

3 stops52h 30m

$532

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/22

Showing 1-10 of 17 results

Best time to book a flight from Washington to Santos Dumont

Have a flexible travel schedule? Discover the best time to fly to Santos Dumont from Washington 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.

Cheapflights Insights

Everything you need to know about your flight from Washington to Rio de Janeiro Santos Dumont Airport

Rainfall in Santos Dumont by month

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.

Temperature in Santos Dumont by month

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).

Reviews of airlines servicing Santos Dumont

Delta

8.0

Very good

7,962 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

7,962 reviews

Delta

8.0

Very good

7,962 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

1,790 reviews

Delta

8.0

Very good

7,962 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

8,830 reviews

Delta

8.0

Very good

7,962 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!

GOL

7.3

Good

1,075 reviews

Delta

8.0

Very good

7,962 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

9,604 reviews

Delta

8.0

Very good

7,962 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 are the cheapest airlines to fly from State of Washington to Rio de Janeiro Santos Dumont Airport one-way?
The cheapest airlines for a one-way flight from State of Washington to Rio de Janeiro Santos Dumont Airport are United Airlines ($704), LATAM Airlines ($714), and Delta ($849).
Can I find deals for flights from Washington to Santos Dumont that include hotel bookings?
Yes. In addition to deals on Washington to Santos Dumont flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington to Santos Dumont?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Santos Dumont.
Can I find deals for business class flights from Washington to Santos Dumont?
Yes. Cheapflights offers flight deals from Washington 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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$414+ Cheap flights from Washington 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington 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 Washington to Santos Dumont

Keep the following information in mind while searching for Washington to Santos Dumont flight deals. Data was last updated juni 23, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Washington to Santos Dumont

Cheapest flights from Washington to Santos DumontExplore the most affordable flight options available from Washington to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on juni 23, 2025.

Explore the most affordable flight options available from Washington to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on juni 23, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Washington to Santos Dumont

Have a flexible travel schedule? Discover the best time to fly to Santos Dumont from Washington with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington to Rio de Janeiro Santos Dumont Airport

Rainfall in Santos Dumont by month

Plan your trip to Santos Dumont by taking into account the average rainfall totals by month.

Temperature in Santos Dumont by month

Plan your trip to Santos Dumont by taking into account the average temperature totals by month.

Reviews of airlines servicing Santos Dumont

Related info for your journey

Find useful and relevant information for your journey from Washington 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 are the cheapest airlines to fly from State of Washington to Rio de Janeiro Santos Dumont Airport one-way?

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

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

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

See prices for flight routes from nearby airports that may be better suited for you.

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Travel Smart

Cheapest flights from Washington to Santos Dumont
Explore the most affordable flight options available from Washington to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on juni 23, 2025.