What are the cheapest airlines to fly from District of Columbia to Rio de Janeiro Santos Dumont Airport one-way?

To fly one-way, consider booking your trip with LATAM Airlines, which is currently one of the cheapest options available, starting at $290. GOL flights start at $332 while deals on United Airlines start at $361 one-way.

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).

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 56 days in advance, which can save you up to 127% on flights from District of Columbia to Rio de Janeiro Santos Dumont Airport compared to booking the week you need them. Waiting 56 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $543. For sooner than that we have options available in the next 3 days from $716.

What is the cheapest month to fly from District of Columbia 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 District of Columbia. 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 District of Columbia to Santos Dumont that include hotel bookings?

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

How can I find direct flights from District of Columbia to Santos Dumont?

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

Can I find deals for business class flights from District of Columbia to Santos Dumont?

Yes. Cheapflights offers flight deals from District of Columbia 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 District of Columbia to Rio de Janeiro Santos Dumont Airport, Brazil

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Cheap flight deals from District of Columbia to Santos Dumont

Round-trip from	$607 (KAYAK)
One-way from	$290 (FlightHub)
Popular in	December
Cheapest in	May
Average price	$760

From District of Columbia to Rio de Janeiro Santos Dumont

Search Deals

One-way flight from District of Columbia 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 District of Columbia to Santos Dumont

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

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 District of Columbia to Santos Dumont
Discover carefully curated flight deals from District of Columbia 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.

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 9/179:40 amDCA - SDU

2 stops27h 40mAir Canada

Wed 9/247:55 amSDU - DCA

2 stops32h 56mAir Canada

Deal found 7/30

$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

Fri 10/32:55 pmDCA - SDU

2 stops17h 40mDelta

Mon 10/138:20 pmSDU - DCA

2 stops42h 25mDelta

Deal found 7/31

$739

Fri 10/37:22 pmIAD - SDU

2 stops23h 33mLATAM Airlines

Mon 10/135:05 pmSDU - IAD

2 stops19h 52mLATAM Airlines

Deal found 7/31

$612

Wed 9/179:45 amIAD - SDU

2 stops27h 35mAir Canada

Wed 9/247:55 amSDU - IAD

2 stops38h 10mAir Canada

Deal found 7/31

$661

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

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

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 8/710:35 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 8/95:13 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

Sun 8/108:12 pmDCA - SDU

2 stops25h 13mAzul

Thu 8/211:45 pmSDU - DCA

2 stops30h 32mAzul

Deal found 7/29

$2,618

Thu 8/1410:35 pmIAD - SDU

1 stop14h 45mUnited Airlines

Sun 8/243:00 pmSDU - IAD

1 stop16h 25mUnited Airlines

Deal found 7/29

$1,066

Mon 8/183:26 pmIAD - SDU

2 stops18h 39mLATAM Airlines

Mon 9/15:40 pmSDU - IAD

2 stops21h 51mLATAM Airlines

Deal found 7/29

$815

One-way flights from District of Columbia to Santos Dumont
Search for one-way flight options from District of Columbia 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

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 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 District of Columbia 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

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

Washington, D.C.Rio de Janeiro

DCA - SDU

DCASDU

Washington, D.C. Reagan-National

Fri 10/3

2:55 pm-9:35 am

2 stops17h 40m

Rio de Janeiro Santos Dumont

Mon 10/13

8:20 pm-1:45 pm

2 stops42h 25m

$739

Washington, D.C.Rio de Janeiro

DCA - SDU

DCASDU

Washington, D.C. Reagan-National

Mon 10/13

4:00 pm-11:05 am

2 stops18h 05m

$290

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 17 results

Best time to book a flight from District of Columbia to Santos Dumont

Have a flexible travel schedule? Discover the best time to fly to Santos Dumont from District of Columbia 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 District of Columbia to Rio de Janeiro Santos Dumont Airport

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from District of Columbia to Rio de Janeiro Santos Dumont Airport as you normally would.

Reviews of airlines servicing Santos Dumont

Peruse reviews from past customers who have flown with Delta, LATAM Airlines, and United Airlines from District of Columbia to Rio de Janeiro Santos Dumont Airport to help guide your decision. Users have also rated airlines in terms of 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 District of Columbia to Rio de Janeiro Santos Dumont Airport one-way?
To fly one-way, consider booking your trip with LATAM Airlines, which is currently one of the cheapest options available, starting at $290. GOL flights start at $332 while deals on United Airlines start at $361 one-way.
Can I find deals for flights from District of Columbia to Santos Dumont that include hotel bookings?
Yes. In addition to deals on District of Columbia to Santos Dumont flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from District of Columbia to Santos Dumont?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from District of Columbia to Santos Dumont.
Can I find deals for business class flights from District of Columbia to Santos Dumont?
Yes. Cheapflights offers flight deals from District of Columbia 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 District of Columbia 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 District of Columbia 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 District of Columbia to Santos Dumont

Keep the following information in mind while searching for District of Columbia to Santos Dumont flight deals. Data was last updated July 31, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from District of Columbia to Santos Dumont

Cheapest flights from District of Columbia to Santos DumontExplore the most affordable flight options available from District of Columbia 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 District of Columbia 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 District of Columbia to Rio de Janeiro Santos Dumont Airport that are best for you.

Best time to book a flight from District of Columbia to Santos Dumont

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

Cheapflights Insights

Everything you need to know about your flight from District of Columbia to Rio de Janeiro Santos Dumont Airport

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

Find hourly flight availability from District of Columbia 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

Related info for your journey

Find useful and relevant information for your journey from District of Columbia 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 District of Columbia to Rio de Janeiro Santos Dumont Airport one-way?

Can I find deals for flights from District of Columbia to Santos Dumont that include hotel bookings?

How can I find direct flights from District of Columbia to Santos Dumont?

Can I find deals for business class flights from District of Columbia 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 District of Columbia to Santos Dumont

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