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

To save up to 56% 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 $1,204 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, November 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 November are about $1,248 on average during November, but can be found for as low as $797.

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.

$324+ Flights from Washington to Rio de Janeiro Santos Dumont Airport, Brazil - Compare & Save Big

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Cheap flight deals from Washington to Santos Dumont

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$733 (Gotogate)
One-way from	$324 (Kiwi.com)
Popular in	July
Cheapest in	November
Average price	$1,244

Provider with most accurate pricing for Seattle/Tacoma Intl-Rio de Janeiro (RIO) flight deals.

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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Rio de Janeiro (RIO) flights.

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From Washington to Rio de Janeiro Santos Dumont

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

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Highest demand for flights based on searches. 7% potential increase in price ($103 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 May 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 May 1, 2025.

Wed 6/47:20 amSEA - SDU

2 stops28h 30mMultiple Airlines

Wed 6/111:00 pmSDU - SEA

2 stops35h 37mMultiple Airlines

Deal found 4/30

$733

Sun 6/17:20 amSEA - SDU

2 stops28h 30mAir Canada

Tue 6/171:00 pmSDU - SEA

2 stops25h 51mAir Canada

Deal found 4/29

$738

Sat 6/2112:12 pmPDX - SDU

3 stops30h 13mMultiple Airlines

Thu 7/37:45 pmSDU - PDX

3 stops43h 32mMultiple Airlines

Deal found 4/30

$907

Fri 9/511:00 pmSEA - SDU

2 stops31h 40mGOL

Mon 9/158:30 pmSDU - SEA

2 stops32h 03mGOL

Deal found 4/29

$910

Thu 11/278:00 amSEA - SDU

2 stops20h 05mLATAM Airlines

Sun 12/78:20 pmSDU - SEA

2 stops23h 07mLATAM Airlines

Deal found 4/30

$1,100

Wed 7/3012:20 amSEA - SDU

2 stops35h 30mUnited Airlines

Sat 9/201:00 pmSDU - SEA

2 stops25h 45mUnited Airlines

Deal found 4/30

$1,156

Mon 6/232:12 pmPDX - SDU

2 stops21h 38mUnited Airlines

Thu 7/31:00 pmSDU - PDX

2 stops26h 43mUnited Airlines

Deal found 4/30

$1,282

Tue 5/277:14 amPDX - SDU

2 stops26h 21mLATAM Airlines

Sun 6/18:20 pmSDU - PDX

2 stops19h 32mLATAM Airlines

Deal found 4/30

$1,447

Fri 12/1911:50 amSEA - SDU

2 stops20h 50mDelta

Sun 12/288:20 pmSDU - SEA

2 stops23h 08mDelta

Deal found 4/30

$3,746

Fri 8/16:00 amPDX - SDU

2 stops23h 35mDelta

Fri 8/88:20 pmSDU - PDX

2 stops26h 43mDelta

Deal found 4/30

$5,954

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 May 1, 2025.

Wed 6/47:20 amSEA - SDU

2 stops28h 30mMultiple Airlines

Wed 6/111:00 pmSDU - SEA

2 stops35h 37mMultiple Airlines

Deal found 4/30

$733

Sun 6/17:20 amSEA - SDU

2 stops28h 30mAir Canada

Tue 6/171:00 pmSDU - SEA

2 stops25h 51mAir Canada

Deal found 4/29

$738

Fri 9/511:00 pmSEA - SDU

2 stops31h 40mGOL

Mon 9/158:30 pmSDU - SEA

2 stops32h 03mGOL

Deal found 4/29

$910

Thu 9/48:00 amSEA - SDU

2 stops21h 35mLATAM Airlines

Sat 9/138:20 pmSDU - SEA

2 stops29h 40mLATAM Airlines

Deal found 4/28

$1,100

Wed 7/3012:20 amSEA - SDU

2 stops35h 30mUnited Airlines

Sat 9/201:00 pmSDU - SEA

2 stops25h 45mUnited Airlines

Deal found 4/30

$1,156

Sat 6/2112:12 pmPDX - SDU

3 stops30h 13mMultiple Airlines

Thu 7/37:45 pmSDU - PDX

3 stops43h 32mMultiple Airlines

Deal found 4/30

$907

Mon 6/232:12 pmPDX - SDU

2 stops21h 38mUnited Airlines

Thu 7/31:00 pmSDU - PDX

2 stops26h 43mUnited Airlines

Deal found 4/30

$1,282

Tue 5/277:14 amPDX - SDU

2 stops26h 21mLATAM Airlines

Sun 6/18:20 pmSDU - PDX

2 stops19h 32mLATAM Airlines

Deal found 4/30

$1,447

Fri 8/16:00 amPDX - SDU

2 stops23h 35mDelta

Fri 8/88:20 pmSDU - PDX

2 stops26h 43mDelta

Deal found 4/30

$5,954

Last-minute flights from Washington to Santos Dumont
Discover last-minute flight deals from Washington to Santos Dumont. Data last updated May 1, 2025 and is based on user searches.

Mon 5/511:30 amSEA - SDU

2 stops24h 20mMultiple Airlines

Thu 6/51:00 pmSDU - SEA

2 stops35h 37mMultiple Airlines

Deal found 4/29

$765

Tue 5/610:51 amPDX - SDU

2 stops24h 59mMultiple Airlines

Mon 5/121:05 pmSDU - PDX

2 stops30h 10mMultiple Airlines

Deal found 4/30

$1,752

Thu 5/88:50 amSEA - SDU

3 stops27h 00mUnited Airlines

Thu 6/191:00 pmSDU - SEA

2 stops34h 14mUnited Airlines

Deal found 4/29

$1,447

Sat 5/1011:30 amSEA - SDU

2 stops24h 20mAir Canada

Wed 6/117:55 amSDU - SEA

2 stops40h 42mAir Canada

Deal found 4/30

$884

Sun 5/117:20 amSEA - SDU

2 stops28h 30mAir Canada

Wed 6/117:55 amSDU - SEA

2 stops40h 42mAir Canada

Deal found 4/30

$778

Tue 5/132:14 pmPDX - SDU

2 stops21h 36mUnited Airlines

Tue 7/291:00 pmSDU - PDX

2 stops26h 43mUnited Airlines

Deal found 4/30

$1,392

Tue 5/137:00 amPDX - SDU

2 stops28h 50mMultiple Airlines

Mon 5/191:05 pmSDU - PDX

2 stops30h 10mMultiple Airlines

Deal found 4/30

$1,687

Wed 5/146:00 amPDX - SDU

2 stops23h 35mDelta

Thu 6/128:20 pmSDU - PDX

2 stops20h 35mDelta

Deal found 4/30

$7,497

Mon 5/2610:10 pmSEA - SDU

2 stops35h 55mGOL

Sat 5/3111:35 amSDU - SEA

2 stops39h 32mGOL

Deal found 4/29

$1,038

Tue 5/277:14 amPDX - SDU

2 stops26h 21mLATAM Airlines

Sun 6/18:20 pmSDU - PDX

2 stops19h 32mLATAM Airlines

Deal found 4/30

$1,447

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 May 1, 2025.

Wed 6/410:49 amSEA - SDU

3 stops41h 51mMultiple Airlines

Deal found 4/30

$324

Fri 5/307:00 amPDX - SDU

3 stops35h 10mMultiple Airlines

Deal found 4/30

$564

Sat 6/1411:35 amSEA - SDU

2 stops24h 15mAir Canada

Deal found 4/30

$624

Tue 10/218:45 amSEA - SDU

3 stops27h 05mUnited Airlines

Deal found 4/29

$713

Mon 9/17:00 amPDX - SDU

2 stops28h 50mUnited Airlines

Deal found 4/30

$765

Sun 5/119:25 pmSEA - SDU

2 stops32h 10mDelta

Deal found 4/28

$1,016

Wed 5/76:00 amSEA - SDU

2 stops27h 40mLATAM Airlines

Deal found 4/29

$1,052

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

Wed 6/4

7:20 am-3:50 pm

2 stops28h 30m

Rio de Janeiro Santos Dumont

Wed 6/11

1:00 pm-8:37 pm

2 stops35h 37m

$733

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Sun 6/1

7:20 am-3:50 pm

2 stops28h 30m

Rio de Janeiro Santos Dumont

Tue 6/17

1:00 pm-10:51 am

2 stops25h 51m

$738

PortlandRio de Janeiro

PDX - SDU

PDXSDU

Portland

Sat 6/21

12:12 pm-10:25 pm

3 stops30h 13m

Rio de Janeiro Santos Dumont

Thu 7/3

7:45 pm-11:17 am

3 stops43h 32m

$907

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Fri 9/5

11:00 pm-10:40 am

2 stops31h 40m

Rio de Janeiro Santos Dumont

Mon 9/15

8:30 pm-12:33 am

2 stops32h 03m

$910

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Thu 9/4

8:00 am-9:35 am

2 stops21h 35m

Rio de Janeiro Santos Dumont

Sat 9/13

8:20 pm-10:00 pm

2 stops29h 40m

$1,100

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Wed 7/30

12:20 am-3:50 pm

2 stops35h 30m

Rio de Janeiro Santos Dumont

Sat 9/20

1:00 pm-10:45 am

2 stops25h 45m

$1,156

PortlandRio de Janeiro

PDX - SDU

PDXSDU

Portland

Mon 6/23

2:12 pm-3:50 pm

2 stops21h 38m

Rio de Janeiro Santos Dumont

Thu 7/3

1:00 pm-11:43 am

2 stops26h 43m

$1,282

PortlandRio de Janeiro

PDX - SDU

PDXSDU

Portland

Tue 5/27

7:14 am-1:35 pm

2 stops26h 21m

Rio de Janeiro Santos Dumont

Sun 6/1

8:20 pm-11:52 am

2 stops19h 32m

$1,447

PortlandRio de Janeiro

PDX - SDU

PDXSDU

Portland

Fri 8/1

6:00 am-9:35 am

2 stops23h 35m

Rio de Janeiro Santos Dumont

Fri 8/8

8:20 pm-7:03 pm

2 stops26h 43m

$5,954

SeattleRio de Janeiro

SEA - SDU

SEASDU

Seattle/Tacoma Intl

Wed 6/4

10:49 am-8:40 am

3 stops41h 51m

$324

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 16 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

See what other customers who have flown with Delta, LATAM Airlines and United Airlines from Washington to Rio de Janeiro have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,934 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

LATAM Airlines

7.5

Good

1,767 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,696 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

GOL

7.3

Good

1,068 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air Canada

7.0

Good

9,252 reviews

Delta

8.0

Very good

7,934 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 Air Canada ($624), United Airlines ($713), and Delta ($1,016).
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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$324+ 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 6/4. 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

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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 May 1, 2025.

Most accurate provider

Most trusted provider

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 May 1, 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 May 1, 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

See what other customers who have flown with Delta, LATAM Airlines and United Airlines from Washington to Rio de Janeiro have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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

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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 May 1, 2025.