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 $285 on LATAM Airlines. Other airlines that offer cheap prices include Delta from $290 and GOL from $350 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.

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 16% on this flight, we recommend booking at least 12 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 $737 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.

$285+ 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	$603 (KAYAK)
One-way from	$285 (Justfly.com)
Popular in	December
Cheapest in	May
Average price	$864

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. 7% potential increase in price ($55 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($25 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, 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 June 12, 2025.

Mon 8/113:50 pmDCA - SDU

2 stops20h 30mLATAM Airlines

Mon 8/255:05 pmSDU - DCA

2 stops21h 59mLATAM Airlines

Deal found 6/12

$603

Mon 8/185:50 pmBWI - SDU

2 stops23h 20mMultiple Airlines

Fri 8/226:15 amSDU - BWI

2 stops29h 41mMultiple Airlines

Deal found 6/10

$631

Thu 8/142:59 pmDCA - SDU

2 stops21h 41mDelta

Thu 8/218:20 pmSDU - DCA

2 stops18h 44mDelta

Deal found 6/10

$646

Thu 10/303:00 pmIAD - SDU

2 stops21h 40mLATAM Airlines

Tue 11/48:20 pmSDU - IAD

2 stops17h 30mLATAM Airlines

Deal found 6/9

$676

Sun 8/246:25 pmBWI - SDU

2 stops18h 15mLATAM Airlines

Thu 8/288:20 pmSDU - BWI

2 stops17h 10mLATAM Airlines

Deal found 6/10

$677

Mon 8/117:00 amIAD - SDU

2 stops30h 20mMultiple Airlines

Sun 8/243:15 pmSDU - IAD

3 stops24h 08mMultiple Airlines

Deal found 6/11

$685

Sat 8/168:21 amBWI - SDU

2 stops28h 14mDelta

Thu 8/218:20 pmSDU - BWI

2 stops22h 00mDelta

Deal found 6/10

$694

Fri 9/123:25 pmIAD - SDU

2 stops24h 25mGOL

Fri 9/196:00 amSDU - IAD

2 stops33h 00mGOL

Deal found 6/11

$695

Sun 8/2410:35 pmIAD - SDU

1 stop14h 45mUnited Airlines

Thu 8/2811:25 amSDU - IAD

1 stop20h 00mUnited Airlines

Deal found 6/10

$733

Mon 8/1112:40 pmIAD - SDU

2 stops26h 10mAir Canada

Wed 8/207:55 amSDU - IAD

2 stops28h 50mAir Canada

Deal found 6/10

$743

Mon 8/251:44 pmDCA - SDU

2 stops19h 56mGOL

Thu 9/46:00 amSDU - DCA

2 stops17h 00mGOL

Deal found 6/10

$751

Mon 8/115:00 pmDCA - SDU

2 stops20h 20mUnited Airlines

Wed 8/2011:25 amSDU - DCA

2 stops25h 34mUnited Airlines

Deal found 6/12

$784

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 June 12, 2025.

Mon 8/113:50 pmDCA - SDU

2 stops20h 30mLATAM Airlines

Mon 8/255:05 pmSDU - DCA

2 stops21h 59mLATAM Airlines

Deal found 6/12

$603

Mon 8/185:50 pmBWI - SDU

2 stops23h 20mMultiple Airlines

Fri 8/226:15 amSDU - BWI

2 stops29h 41mMultiple Airlines

Deal found 6/10

$631

Thu 8/142:59 pmDCA - SDU

2 stops21h 41mDelta

Thu 8/218:20 pmSDU - DCA

2 stops18h 44mDelta

Deal found 6/10

$646

Fri 9/123:25 pmIAD - SDU

2 stops24h 25mGOL

Fri 9/196:00 amSDU - IAD

2 stops33h 00mGOL

Deal found 6/11

$695

Sun 8/2410:35 pmIAD - SDU

1 stop14h 45mUnited Airlines

Thu 8/2811:25 amSDU - IAD

1 stop20h 00mUnited Airlines

Deal found 6/10

$733

Mon 8/1112:40 pmIAD - SDU

2 stops26h 10mAir Canada

Wed 8/207:55 amSDU - IAD

2 stops28h 50mAir Canada

Deal found 6/10

$743

Thu 10/303:00 pmIAD - SDU

2 stops21h 40mLATAM Airlines

Tue 11/48:20 pmSDU - IAD

2 stops17h 30mLATAM Airlines

Deal found 6/9

$676

Mon 8/117:00 amIAD - SDU

2 stops30h 20mMultiple Airlines

Sun 8/243:15 pmSDU - IAD

3 stops24h 08mMultiple Airlines

Deal found 6/11

$685

Sat 8/168:21 amBWI - SDU

2 stops28h 14mDelta

Thu 8/218:20 pmSDU - BWI

2 stops22h 00mDelta

Deal found 6/10

$694

Sun 8/246:25 pmBWI - SDU

2 stops18h 15mLATAM Airlines

Thu 8/288:20 pmSDU - BWI

2 stops17h 10mLATAM Airlines

Deal found 6/10

$677

Mon 8/251:44 pmDCA - SDU

2 stops19h 56mGOL

Thu 9/46:00 amSDU - DCA

2 stops17h 00mGOL

Deal found 6/10

$751

Mon 8/115:00 pmDCA - SDU

2 stops20h 20mUnited Airlines

Wed 8/2011:25 amSDU - DCA

2 stops25h 34mUnited Airlines

Deal found 6/12

$784

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 June 12, 2025 and is based on user searches.

Wed 6/183:25 pmIAD - SDU

2 stops27h 00mGOL

Sun 6/226:05 amSDU - IAD

2 stops32h 55mGOL

Deal found 6/11

$1,601

Wed 6/186:59 amDCA - SDU

3 stops25h 36mMultiple Airlines

Sun 6/222:20 pmSDU - DCA

3 stops43h 32mMultiple Airlines

Deal found 6/11

$1,778

Thu 6/1910:35 pmIAD - SDU

1 stop16h 15mUnited Airlines

Mon 6/231:00 pmSDU - IAD

2 stops26h 28mUnited Airlines

Deal found 6/11

$1,049

Thu 6/194:56 pmDCA - SDU

2 stops19h 34mDelta

Sun 6/228:20 pmSDU - DCA

2 stops17h 25mDelta

Deal found 6/11

$5,901

Fri 6/205:00 amDCA - SDU

2 stops28h 40mGOL

Mon 6/233:05 pmSDU - DCA

2 stops33h 09mGOL

Deal found 6/11

$1,178

Fri 6/2012:13 pmIAD - SDU

2 stops20h 22mLATAM Airlines

Mon 6/232:10 pmSDU - IAD

2 stops22h 49mLATAM Airlines

Deal found 6/11

$1,429

Sun 6/228:30 amDCA - SDU

2 stops30h 20mUnited Airlines

Thu 6/261:00 pmSDU - DCA

2 stops29h 01mUnited Airlines

Deal found 6/10

$1,057

Sun 6/226:00 amBWI - SDU

2 stops32h 50mUnited Airlines

Mon 6/301:00 pmSDU - BWI

2 stops25h 48mUnited Airlines

Deal found 6/11

$1,202

Sun 6/2210:35 pmIAD - SDU

1 stop16h 15mMultiple Airlines

Thu 6/261:00 pmSDU - IAD

1 stop18h 25mMultiple Airlines

Deal found 6/10

$1,317

Sun 6/228:38 pmBWI - SDU

3 stops35h 07mMultiple Airlines

Mon 6/306:00 amSDU - BWI

3 stops17h 57mMultiple Airlines

Deal found 6/11

$1,346

Sun 6/222:25 pmIAD - SDU

2 stops24h 25mAir Canada

Mon 6/307:55 amSDU - IAD

2 stops30h 47mAir Canada

Deal found 6/11

$1,493

Sun 6/2212:40 pmIAD - SDU

2 stops22h 45mAzul

Thu 7/37:45 amSDU - IAD

2 stops28h 29mAzul

Deal found 6/10

$1,695

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 June 12, 2025.

Thu 9/186:00 amDCA - SDU

2 stops26h 35mLATAM Airlines

Deal found 6/10

$285

Thu 8/145:45 amIAD - SDU

3 stops31h 35mMultiple Airlines

Deal found 6/12

$288

Wed 11/51:55 pmDCA - SDU

2 stops21h 45mDelta

Deal found 6/10

$290

Mon 10/65:42 pmBWI - SDU

2 stops25h 43mMultiple Airlines

Deal found 6/12

$295

Wed 7/93:37 pmIAD - SDU

2 stops27h 53mLATAM Airlines

Deal found 6/12

$295

Tue 8/261:35 pmBWI - SDU

2 stops19h 00mLATAM Airlines

Deal found 6/10

$315

Mon 8/43:25 pmIAD - SDU

2 stops24h 25mGOL

Deal found 6/10

$350

Thu 8/286:40 pmBWI - SDU

2 stops20h 10mUnited Airlines

Deal found 6/9

$355

Thu 8/2810:35 pmIAD - SDU

1 stop16h 15mUnited Airlines

Deal found 6/9

$355

Thu 7/317:59 pmDCA - SDU

2 stops41h 21mUnited Airlines

Deal found 6/12

$375

Mon 10/66:04 pmDCA - SDU

2 stops19h 16mMultiple Airlines

Deal found 6/12

$397

Thu 8/145:55 pmDCA - SDU

2 stops15h 45mGOL

Deal found 6/12

$480

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

Washington, D.C.Rio de Janeiro

DCA - SDU

DCASDU

Washington, D.C. Reagan-National

Mon 8/11

3:50 pm-1:20 pm

2 stops20h 30m

Rio de Janeiro Santos Dumont

Mon 8/25

5:05 pm-2:04 pm

2 stops21h 59m

$603

BaltimoreRio de Janeiro

BWI - SDU

BWISDU

Baltimore/Washington

Mon 8/18

5:50 pm-6:10 pm

2 stops23h 20m

Rio de Janeiro Santos Dumont

Fri 8/22

6:15 am-10:56 am

2 stops29h 41m

$631

Washington, D.C.Rio de Janeiro

DCA - SDU

DCASDU

Washington, D.C. Reagan-National

Thu 8/14

2:59 pm-1:40 pm

2 stops21h 41m

Rio de Janeiro Santos Dumont

Thu 8/21

8:20 pm-2:04 pm

2 stops18h 44m

$646

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Thu 10/30

3:00 pm-1:40 pm

2 stops21h 40m

Rio de Janeiro Santos Dumont

Tue 11/4

8:20 pm-11:50 am

2 stops17h 30m

$676

BaltimoreRio de Janeiro

BWI - SDU

BWISDU

Baltimore/Washington

Sun 8/24

6:25 pm-1:40 pm

2 stops18h 15m

Rio de Janeiro Santos Dumont

Thu 8/28

8:20 pm-12:30 pm

2 stops17h 10m

$677

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Mon 8/11

7:00 am-2:20 pm

2 stops30h 20m

Rio de Janeiro Santos Dumont

Sun 8/24

3:15 pm-2:23 pm

3 stops24h 08m

$685

BaltimoreRio de Janeiro

BWI - SDU

BWISDU

Baltimore/Washington

Sat 8/16

8:21 am-1:35 pm

2 stops28h 14m

Rio de Janeiro Santos Dumont

Thu 8/21

8:20 pm-5:20 pm

2 stops22h 00m

$694

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Fri 9/12

3:25 pm-4:50 pm

2 stops24h 25m

Rio de Janeiro Santos Dumont

Fri 9/19

6:00 am-2:00 pm

2 stops33h 00m

$695

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Sun 8/24

10:35 pm-2:20 pm

1 stop14h 45m

Rio de Janeiro Santos Dumont

Thu 8/28

11:25 am-6:25 am

1 stop20h 00m

$733

Washington, D.C.Rio de Janeiro

IAD - SDU

IADSDU

Washington, D.C. Dulles Intl

Mon 8/11

12:40 pm-3:50 pm

2 stops26h 10m

Rio de Janeiro Santos Dumont

Wed 8/20

7:55 am-11:45 am

2 stops28h 50m

$743

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 32 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.

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

Read reviews from past customers who have flown Azul, Delta and LATAM Airlines from Washington, D.C. to Rio de Janeiro. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Azul

8.0

Very good

781 reviews

Reviews

1 / 14

2.0

Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.

Azul

8.0

Very good

781 reviews

Azul

8.0

Very good

781 reviews

Reviews

1 / 14

2.0

Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.

Delta

8.0

Very good

7,950 reviews

Azul

8.0

Very good

781 reviews

Reviews

1 / 14

2.0

Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.

LATAM Airlines

7.5

Good

1,785 reviews

Azul

8.0

Very good

781 reviews

Reviews

1 / 14

2.0

Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.

United Airlines

7.4

Good

8,790 reviews

Azul

8.0

Very good

781 reviews

Reviews

1 / 14

2.0

Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.

GOL

7.3

Good

1,073 reviews

Azul

8.0

Very good

781 reviews

Reviews

1 / 14

2.0

Mediocre

Mike,Feb 2025

NVT - LIS

Experience was terrible. Flight cancelled. Missed connection. Replace service with EuroAtlantic airlines. Awful seats, awful food.

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 $285 on LATAM Airlines. Other airlines that offer cheap prices include Delta from $290 and GOL from $350 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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$285+ 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 9/18. 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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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 June 12, 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 June 12, 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 June 12, 2025.

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

Read reviews from past customers who have flown Azul, Delta and LATAM Airlines from Washington, D.C. to Rio de Janeiro. You can also see how each airline compares in terms of 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 June 12, 2025.