What are the cheapest airlines to fly from Washington, D.C. to Rio de Janeiro Santos Dumont Airport one-way?

One-way options have recently been found by users for as low as $290 on LATAM Airlines. Other airlines that offer cheap prices include GOL from $332 and United Airlines from $360 one-way.

What is the cheapest day to fly from Washington, D.C. to Rio de Janeiro Santos Dumont Airport?

Travelers seeking maximum savings on their Washington, D.C. to Rio de Janeiro Santos Dumont Airport flight should consider departing on Wednesday at noon when fares are most often at their lowest. Wednesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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).

What are the most popular routes from Washington, D.C. to Rio de Janeiro Santos Dumont Airport?

When deciding which route to take from Washington, D.C. to Rio de Janeiro Santos Dumont Airport consider Washington, D.C. Dulles Intl - Rio de Janeiro Santos Dumont, Washington, D.C. Reagan-National - Rio de Janeiro Santos Dumont or Baltimore/Washington - Rio de Janeiro Santos Dumont as they are the most popular.

What is the cheapest day to fly round-trip from Washington, D.C. to Rio de Janeiro Santos Dumont Airport?

Tuesday flights are found to be more expensive to fly from Washington, D.C. to Rio de Janeiro Santos Dumont Airport. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Rio de Janeiro Santos Dumont Airport.

How far in advance should I book a flight from Washington, D.C. to Rio de Janeiro Santos Dumont Airport?

To save up to 127% on this flight, we recommend booking at least 56 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Washington, D.C. to Rio de Janeiro Santos Dumont Airport from $543 1-2 weeks out and tickets from $716 for flights departing within the next 72 hours.

What is the cheapest month to fly from Washington, D.C. to Rio de Janeiro Santos Dumont Airport?

May is one of the best times of the year to fly to Rio de Janeiro Santos Dumont Airport from Washington, D.C.. Prices for May average $719 per person but you can even find prices for as low as $318. The most expensive prices can be found in the month of December. Opting for a May flight can save you 35% on your journey compared to booking in December

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

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

How can I find direct flights from Washington, D.C. 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, D.C. to Santos Dumont.

Can I find deals for business class flights from Washington, D.C. to Santos Dumont?

Yes. Cheapflights offers flight deals from Washington, D.C. 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.

$290+ Flights from Washington, D.C. to Rio de Janeiro Santos Dumont Airport, Brazil

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Cheap flight deals from Washington, D.C. to Santos Dumont

Round-trip from	$527 (KAYAK)
One-way from	$290 (FlightHub)
Popular in	December
Cheapest in	May
Average price	$760

From Washington, D.C. (WAS) to Rio de Janeiro Santos Dumont

Search Deals

One-way flight from Washington, D.C. (WAS) to Rio de Janeiro Santos Dumont

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($70 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($24 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 Washington, D.C. to Santos Dumont

Cheapest flights from Washington, D.C. to Santos Dumont
Explore the most affordable flight options available from Washington, D.C. to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

Mon 10/201:50 pmBWI - SDU

2 stops20h 15mLATAM Airlines

Sun 11/24:10 pmSDU - BWI

2 stops22h 26mLATAM Airlines

Deal found 7/29

$527

Mon 10/276:16 pmBWI - SDU

2 stops19h 04mMultiple Airlines

Sun 11/98:30 amSDU - BWI

2 stops27h 29mMultiple Airlines

Deal found 7/29

$602

Fri 10/36:20 pmDCA - SDU

2 stops24h 35mLATAM Airlines

Tue 10/142:20 pmSDU - DCA

2 stops20h 46mLATAM Airlines

Deal found 7/31

$612

Fri 10/37:22 pmIAD - SDU

2 stops23h 33mLATAM Airlines

Mon 10/135:05 pmSDU - IAD

2 stops19h 52mLATAM Airlines

Deal found 7/31

$612

Wed 9/179:40 amDCA - SDU

2 stops27h 40mAir Canada

Wed 9/247:55 amSDU - DCA

2 stops32h 56mAir Canada

Deal found 7/30

$661

Wed 9/179:45 amIAD - SDU

2 stops27h 35mAir Canada

Wed 9/247:55 amSDU - IAD

2 stops38h 10mAir Canada

Deal found 7/31

$661

Wed 10/294:00 amIAD - SDU

3 stops26h 40mMultiple Airlines

Wed 11/58:15 amSDU - IAD

2 stops31h 00mMultiple Airlines

Deal found 7/30

$685

Mon 8/253:45 pmDCA - SDU

2 stops17h 55mGOL

Thu 9/46:20 amSDU - DCA

2 stops17h 40mGOL

Deal found 7/29

$696

Sun 9/2810:35 pmIAD - SDU

1 stop14h 45mUnited Airlines

Sun 10/52:55 pmSDU - IAD

2 stops22h 00mUnited Airlines

Deal found 7/31

$697

Wed 9/102:59 pmDCA - SDU

2 stops21h 21mMultiple Airlines

Wed 9/178:30 pmSDU - DCA

2 stops27h 30mMultiple Airlines

Deal found 7/31

$709

Fri 10/32:55 pmDCA - SDU

2 stops17h 40mDelta

Mon 10/138:20 pmSDU - DCA

2 stops42h 25mDelta

Deal found 7/31

$739

Best flights from Washington, D.C. to Santos Dumont
Discover carefully curated flight deals from Washington, D.C. 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.

Mon 10/201:50 pmBWI - SDU

2 stops20h 15mLATAM Airlines

Sun 11/24:10 pmSDU - BWI

2 stops22h 26mLATAM Airlines

Deal found 7/29

$527

Mon 10/276:16 pmBWI - SDU

2 stops19h 04mMultiple Airlines

Sun 11/98:30 amSDU - BWI

2 stops27h 29mMultiple Airlines

Deal found 7/29

$602

Wed 9/179:40 amDCA - SDU

2 stops27h 40mAir Canada

Wed 9/247:55 amSDU - DCA

2 stops32h 56mAir Canada

Deal found 7/30

$661

Mon 8/253:45 pmDCA - SDU

2 stops17h 55mGOL

Thu 9/46:20 amSDU - DCA

2 stops17h 40mGOL

Deal found 7/29

$696

Sun 9/2810:35 pmIAD - SDU

1 stop14h 45mUnited Airlines

Sun 10/52:55 pmSDU - IAD

2 stops22h 00mUnited Airlines

Deal found 7/31

$697

Fri 10/32:55 pmDCA - SDU

2 stops17h 40mDelta

Mon 10/138:20 pmSDU - DCA

2 stops42h 25mDelta

Deal found 7/31

$739

Fri 10/36:20 pmDCA - SDU

2 stops24h 35mLATAM Airlines

Tue 10/142:20 pmSDU - DCA

2 stops20h 46mLATAM Airlines

Deal found 7/31

$612

Wed 9/179:45 amIAD - SDU

2 stops27h 35mAir Canada

Wed 9/247:55 amSDU - IAD

2 stops38h 10mAir Canada

Deal found 7/31

$661

Fri 10/37:22 pmIAD - SDU

2 stops23h 33mLATAM Airlines

Mon 10/135:05 pmSDU - IAD

2 stops19h 52mLATAM Airlines

Deal found 7/31

$612

Wed 10/294:00 amIAD - SDU

3 stops26h 40mMultiple Airlines

Wed 11/58:15 amSDU - IAD

2 stops31h 00mMultiple Airlines

Deal found 7/30

$685

Wed 9/102:59 pmDCA - SDU

2 stops21h 21mMultiple Airlines

Wed 9/178:30 pmSDU - DCA

2 stops27h 30mMultiple Airlines

Deal found 7/31

$709

Sun 10/56:00 amBWI - SDU

2 stops31h 20mUnited Airlines

Sun 10/122:55 pmSDU - BWI

2 stops24h 13mUnited Airlines

Deal found 7/31

$902

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

Tue 8/58:36 amBWI - SDU

2 stops28h 29mMultiple Airlines

Fri 8/157:55 amSDU - BWI

3 stops41h 04mMultiple Airlines

Deal found 7/29

$786

Tue 8/512:40 pmIAD - SDU

2 stops19h 30mAzul

Fri 8/153:15 pmSDU - IAD

2 stops20h 59mAzul

Deal found 7/29

$2,515

Thu 8/72:54 pmBWI - SDU

2 stops22h 26mUnited Airlines

Sun 8/103:00 pmSDU - BWI

2 stops23h 48mUnited Airlines

Deal found 7/29

$1,057

Thu 8/710:35 pmIAD - SDU

1 stop14h 45mUnited Airlines

Sun 8/103:00 pmSDU - IAD

1 stop16h 25mUnited Airlines

Deal found 7/29

$1,225

Thu 8/76:00 pmDCA - SDU

2 stops19h 20mUnited Airlines

Sun 8/103:00 pmSDU - DCA

2 stops21h 46mUnited Airlines

Deal found 7/29

$1,231

Fri 8/85:05 amDCA - SDU

2 stops16h 20mGOL

Fri 8/226:00 amSDU - DCA

2 stops18h 15mGOL

Deal found 7/29

$1,359

Sat 8/97:15 amBWI - SDU

3 stops29h 20mLATAM Airlines

Fri 8/222:20 pmSDU - BWI

3 stops44h 02mLATAM Airlines

Deal found 7/29

$820

Sat 8/95:13 pmIAD - SDU

2 stops23h 32mMultiple Airlines

Fri 8/225:25 pmSDU - IAD

2 stops22h 23mMultiple Airlines

Deal found 7/29

$1,085

Sat 8/92:00 pmIAD - SDU

2 stops25h 20mLATAM Airlines

Fri 8/228:00 amSDU - IAD

2 stops31h 31mLATAM Airlines

Deal found 7/29

$1,149

Sat 8/92:25 pmIAD - SDU

2 stops26h 20mAir Canada

Thu 8/217:55 amSDU - IAD

2 stops30h 47mAir Canada

Deal found 7/29

$1,939

Sun 8/102:55 pmDCA - SDU

2 stops17h 40mLATAM Airlines

Mon 8/258:20 pmSDU - DCA

2 stops18h 44mLATAM Airlines

Deal found 7/29

$1,154

Sun 8/109:40 amDCA - SDU

2 stops27h 40mAir Canada

Mon 8/257:55 amSDU - DCA

2 stops38h 53mAir Canada

Deal found 7/31

$2,001

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

Mon 10/134:00 pmDCA - SDU

2 stops18h 05mLATAM Airlines

Deal found 7/29

$290

Mon 10/133:33 pmIAD - SDU

2 stops18h 32mLATAM Airlines

Deal found 7/29

$290

Tue 10/148:00 amBWI - SDU

2 stops34h 25mMultiple Airlines

Deal found 7/29

$313

Mon 10/131:50 pmBWI - SDU

2 stops20h 15mLATAM Airlines

Deal found 7/29

$320

Mon 10/273:53 pmDCA - SDU

2 stops17h 52mGOL

Deal found 7/30

$332

Sun 10/124:05 amIAD - SDU

3 stops26h 35mMultiple Airlines

Deal found 7/28

$338

Thu 8/286:30 amDCA - SDU

2 stops26h 05mMultiple Airlines

Deal found 7/29

$354

Tue 8/266:00 amBWI - SDU

2 stops31h 20mUnited Airlines

Deal found 7/28

$360

Tue 10/710:35 pmIAD - SDU

1 stop14h 45mUnited Airlines

Deal found 7/29

$361

Thu 8/281:00 pmDCA - SDU

2 stops24h 20mUnited Airlines

Deal found 7/31

$365

Wed 10/83:20 pmIAD - SDU

2 stops18h 20mAvianca

Deal found 7/30

$432

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreRio de Janeiro

BWI - SDU

BWISDU

Baltimore/Washington

Mon 10/20

1:50 pm-11:05 am

2 stops20h 15m

Rio de Janeiro Santos Dumont

Sun 11/2

4:10 pm-12:36 pm

2 stops22h 26m

$527

BaltimoreRio de Janeiro

BWI - SDU

BWISDU

Baltimore/Washington

Mon 10/27

6:16 pm-2:20 pm

2 stops19h 04m

Rio de Janeiro Santos Dumont

Sun 11/9

8:30 am-9:59 am

2 stops27h 29m

$602

Washington, D.C.Rio de Janeiro

DCA - SDU

DCASDU

Washington, D.C. Reagan-National

Fri 10/3

6:20 pm-7:55 pm

2 stops24h 35m

Rio de Janeiro Santos Dumont

Tue 10/14

2:20 pm-10:06 am

2 stops20h 46m

$612

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Fri 10/3

7:22 pm-7:55 pm

2 stops23h 33m

Rio de Janeiro Santos Dumont

Mon 10/13

5:05 pm-11:57 am

2 stops19h 52m

$612

Washington, D.C.Rio de Janeiro

DCA - SDU

DCASDU

Washington, D.C. Reagan-National

Wed 9/17

9:40 am-2:20 pm

2 stops27h 40m

Rio de Janeiro Santos Dumont

Wed 9/24

7:55 am-3:51 pm

2 stops32h 56m

$661

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Wed 9/17

9:45 am-2:20 pm

2 stops27h 35m

Rio de Janeiro Santos Dumont

Wed 9/24

7:55 am-9:05 pm

2 stops38h 10m

$661

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Wed 10/29

4:00 am-7:40 am

3 stops26h 40m

Rio de Janeiro Santos Dumont

Wed 11/5

8:15 am-1:15 pm

2 stops31h 00m

$685

Washington, D.C.Rio de Janeiro

DCA - SDU

DCASDU

Washington, D.C. Reagan-National

Mon 8/25

3:45 pm-10:40 am

2 stops17h 55m

Rio de Janeiro Santos Dumont

Thu 9/4

6:20 am-11:00 pm

2 stops17h 40m

$696

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Sun 9/28

10:35 pm-2:20 pm

1 stop14h 45m

Rio de Janeiro Santos Dumont

Sun 10/5

2:55 pm-11:55 am

2 stops22h 00m

$697

Washington, D.C.Rio de Janeiro

DCA - SDU

DCASDU

Washington, D.C. Reagan-National

Wed 9/10

2:59 pm-1:20 pm

2 stops21h 21m

Rio de Janeiro Santos Dumont

Wed 9/17

8:30 pm-11:00 pm

2 stops27h 30m

$709

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 23 results

Best time to book a flight from Washington, D.C. to Santos Dumont

Have a flexible travel schedule? Discover the best time to fly to Santos Dumont from Washington, D.C. 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, D.C. to Rio de Janeiro Santos Dumont Airport

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

It’s optimal to fly from Washington, D.C. to Rio de Janeiro Santos Dumont Airport in the afternoon. By choosing this option you can save up to 29% on the cost of your flight, compared to a flight at noon.

Reviews of airlines servicing Santos Dumont

Read through reviews of airlines operating flights from Washington, D.C. to Rio de Janeiro Santos Dumont Airport, such as Delta, LATAM Airlines, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,981 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

7,981 reviews

Delta

8.0

Very good

7,981 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

7,981 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

8,900 reviews

Delta

8.0

Very good

7,981 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

1,091 reviews

Delta

8.0

Very good

7,981 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

9,851 reviews

Delta

8.0

Very good

7,981 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 Washington, D.C. to Rio de Janeiro Santos Dumont Airport one-way?
One-way options have recently been found by users for as low as $290 on LATAM Airlines. Other airlines that offer cheap prices include GOL from $332 and United Airlines from $360 one-way.
What are the most popular routes from Washington, D.C. to Rio de Janeiro Santos Dumont Airport?
When deciding which route to take from Washington, D.C. to Rio de Janeiro Santos Dumont Airport consider Washington, D.C. Dulles Intl - Rio de Janeiro Santos Dumont, Washington, D.C. Reagan-National - Rio de Janeiro Santos Dumont or Baltimore/Washington - Rio de Janeiro Santos Dumont as they are the most popular.
Can I find deals for flights from Washington, D.C. to Santos Dumont that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to Santos Dumont flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. 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, D.C. to Santos Dumont.
Can I find deals for business class flights from Washington, D.C. to Santos Dumont?
Yes. Cheapflights offers flight deals from Washington, D.C. 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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$290+ Cheap flights from Washington, D.C. (WAS) 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 10/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Washington, D.C. to Santos Dumont with Cheapflights

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3. Compare prices and book

Cheap flight deals from Washington, D.C. to Santos Dumont

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Find flight deals from Washington, D.C. to Santos Dumont

Cheapest flights from Washington, D.C. to Santos DumontExplore the most affordable flight options available from Washington, D.C. 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 Washington, D.C. 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 Washington, D.C. to Rio de Janeiro Santos Dumont Airport that are best for you.

Best time to book a flight from Washington, D.C. to Santos Dumont

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

Cheapflights Insights

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

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

Find hourly flight availability from Washington, D.C. to Santos Dumont. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.

Reviews of airlines servicing Santos Dumont

Read through reviews of airlines operating flights from Washington, D.C. to Rio de Janeiro Santos Dumont Airport, such as Delta, LATAM Airlines, and United Airlines. 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, D.C. 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 Washington, D.C. to Rio de Janeiro Santos Dumont Airport one-way?

What are the most popular routes from Washington, D.C. to Rio de Janeiro Santos Dumont Airport?

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

How can I find direct flights from Washington, D.C. to Santos Dumont?

Can I find deals for business class flights from Washington, D.C. to Santos Dumont?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington, D.C. to Santos Dumont

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Cheapest flights from Washington, D.C. to Santos Dumont
Explore the most affordable flight options available from Washington, D.C. to Santos Dumont. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.