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$256+ Cheap flights from Dulles Intl (IAD) to Sao Paulo, Brazil (SAO)

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.
IAD — SAO
8월 23 — 8월 301
토 8/23
토 8/30
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Sao Paulo are usually found in September or May, booked 48 days in advance, depart on a Thursday or Wednesday and return on a Thursday

Cheap flight deals from Dulles Intl to Sao Paulo

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Sao Paulo (SAO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 8월 18, 2025.

Round-trip from

$585
(Avianca)

One-way from

$256
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$800

Good round-trip deal

$739 or less

Good one-way deal

$402 or less
From Washington, D.C. Dulles Intl to Sao Paulo (SAO)
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One-way flight from Washington, D.C. Dulles Intl to Sao Paulo (SAO)
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Highest demand for flights based on searches. 19% potential increase in price ($212 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($58 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Sao Paulo (SAO).
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Sao Paulo (SAO).
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Find flight deals from Dulles Intl to Sao Paulo

Cheapest flights from Dulles Intl to Sao Paulo
Explore the most affordable flight options available from Dulles Intl to Sao Paulo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8월 18, 2025.

This Avianca deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
일 10/127:00 amIAD - GRU
1 stop18h 10mAvianca
목 10/164:50 pmGRU - IAD
1 stop13h 45mAvianca
Deal found 8/15$585
This Priceline deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
수 9/175:45 amIAD - GRU
2 stops17h 55mAvianca
목 10/21:45 amGRU - IAD
1 stop13h 15mAvianca
Deal found 8/15$587
This Copa Airlines deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
수 8/202:25 amIAD - GRU
1 stop17h 25mCopa Airlines
금 9/53:10 amGRU - IAD
1 stop22h 20mCopa Airlines
Deal found 8/15$588
This Avianca deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
토 8/305:45 amIAD - GRU
2 stops19h 25mAvianca
금 9/57:20 amGRU - IAD
2 stops20h 25mAvianca
Deal found 8/15$589
This Cheapflightsfares deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
목 11/62:35 pmIAD - GRU
1 stop13h 05mAvianca
토 11/81:20 amGRU - IAD
1 stop13h 55mAvianca
Deal found 8/17$594
This KAYAK deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
월 8/253:26 pmIAD - GRU
2 stops23h 59mLATAM Airlines
목 8/284:35 pmGRU - IAD
2 stops19h 48mLATAM Airlines
Deal found 8/17$598
This Air Canada deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
일 9/79:35 amIAD - GRU
1 stop23h 05mAir Canada
수 9/179:00 pmGRU - IAD
1 stop25h 05mAir Canada
Deal found 8/16$599
This Air Canada deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
목 11/139:45 amIAD - GRU
1 stop21h 15mAir Canada
수 11/269:45 pmGRU - IAD
1 stop25h 14mAir Canada
Deal found 8/18$600
This Air Canada deal was found by Cheapflights users on 8/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
목 11/209:45 amIAD - GRU
1 stop21h 15mAir Canada
일 12/79:45 pmGRU - IAD
1 stop25h 14mAir Canada
Deal found 8/16$601
This Air Canada deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
수 10/221:00 pmIAD - GRU
1 stop19h 40mAir Canada
일 10/269:10 pmGRU - IAD
1 stop24h 49mAir Canada
Deal found 8/17$605
This Air Canada deal was found by Cheapflights users on 8/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
화 10/219:35 amIAD - GRU
1 stop23h 05mAir Canada
화 11/119:30 pmGRU - IAD
1 stop24h 59mAir Canada
Deal found 8/17$607
This Trip.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
월 9/83:15 pmIAD - CGH
2 stops26h 30mMultiple Airlines
일 9/216:00 amCGH - IAD
2 stops33h 25mMultiple Airlines
Deal found 8/18$625

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Sao Paulo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated 8월 18, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Sao Paulo that are best for you.

Fly from

Dulles Intl

Fly to

Sao Paulo

Route

Depart

Return

Price

Washington, D.C.Sao Paulo

IAD - GRU

IADGRU

Washington, D.C. Dulles Intl

토 10/11

2:25 am-12:10 am

1 stop20h 45m

Sao Paulo Guarulhos Intl

수 10/15

3:10 am-12:30 am

1 stop22h 20m

$588

Washington, D.C.Sao Paulo

IAD - GRU

IADGRU

Washington, D.C. Dulles Intl

수 9/17

9:35 am-3:50 am

1 stop17h 15m

Sao Paulo Guarulhos Intl

목 10/2

1:40 am-12:30 am

1 stop23h 50m

$588

Washington, D.C.Sao Paulo

IAD - GRU

IADGRU

Washington, D.C. Dulles Intl

일 10/26

2:25 am-12:15 am

1 stop20h 50m

Sao Paulo Guarulhos Intl

금 11/7

3:10 am-11:33 pm

1 stop22h 23m

$588

Washington, D.C.Sao Paulo

IAD - GRU

IADGRU

Washington, D.C. Dulles Intl

목 11/6

2:35 pm-5:40 am

1 stop13h 05m

Sao Paulo Guarulhos Intl

토 11/8

1:20 am-1:15 pm

1 stop13h 55m

$594

Washington, D.C.Sao Paulo

IAD - GRU

IADGRU

Washington, D.C. Dulles Intl

목 11/20

9:45 am-9:00 am

1 stop21h 15m

Sao Paulo Guarulhos Intl

일 12/7

9:45 pm-8:59 pm

1 stop25h 14m

$600

Washington, D.C.Sao Paulo

IAD - GRU

IADGRU

Washington, D.C. Dulles Intl

수 10/8

9:35 am-9:40 am

1 stop23h 05m

Sao Paulo Guarulhos Intl

화 10/14

9:40 pm-1:38 pm

1 stop16h 58m

$607

Washington, D.C.Sao Paulo

IAD - GRU

IADGRU

Washington, D.C. Dulles Intl

화 10/21

9:35 am-9:40 am

1 stop23h 05m

Sao Paulo Guarulhos Intl

화 11/11

9:30 pm-8:29 pm

1 stop24h 59m

$607

Washington, D.C.Sao Paulo

IAD - CGH

IADCGH

Washington, D.C. Dulles Intl

월 9/8

3:15 pm-6:45 pm

2 stops26h 30m

Sao Paulo Congonhas

일 9/21

6:00 am-2:25 pm

2 stops33h 25m

$625

Washington, D.C.Sao Paulo

IAD - VCP

IADVCP

Washington, D.C. Dulles Intl

금 12/5

8:30 am-6:35 am

1 stop20h 05m

Sao Paulo Viracopos

월 12/8

6:05 pm-1:00 pm

2 stops20h 55m

$659

Washington, D.C.Sao Paulo

IAD - VCP

IADVCP

Washington, D.C. Dulles Intl

화 9/30

5:45 am-9:05 am

3 stops26h 20m

Sao Paulo Viracopos

화 10/7

11:25 pm-2:45 am

3 stops28h 20m

$663

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 58 results
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Best time to book a flight from Dulles Intl to Sao Paulo

Have a flexible travel schedule? Discover the best time to fly to Sao Paulo from Dulles Intl 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. Dulles Intl Airport to Sao Paulo

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Sao Paulo?

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Sao Paulo. Price data was last updated on August 8, 2025.

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Sao Paulo may vary depending on when you book. For the best chance of a lower fare, look to book 48 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Sao Paulo?

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sao Paulo (average of $672). Flying from Washington, D.C. Dulles Intl Airport to Sao Paulo in December is currently the most expensive (average of $1,209). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to SAO?

Find hourly flight availability from Dulles Intl to Sao Paulo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 8월 18, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. Dulles Intl Airport to Sao Paulo in the afternoon. If you’re flexible enough to do this you can expect to save up to 27% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Sao Paulo?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Sao Paulo. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Sao Paulo flight should consider departing on Monday mornings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to Sao Paulo

Explore weekly flight availability from Dulles Intl to Sao Paulo. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 8월 18, 2025.

The most flights from IAD to SAO are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

What’s the top layover airport for flights from Washington, D.C. Dulles Intl Airport to Sao Paulo?

Share of 1-stop round-trip flights from Washington, D.C. Dulles Intl Airport to Sao Paulo chosen by Cheapflights users in the past 12 months, using the same layover each way.

Bogotá (BOG) – chosen by Cheapflights users on 93% of 1-stop itineraries from Washington, D.C. Dulles Intl Airport to Sao Paulo on Cheapflights.

What’s the cheapest layover airport for flights from Washington, D.C. Dulles Intl Airport to Sao Paulo?

Average round-trip fare for 1-stop flights from Washington, D.C. Dulles Intl Airport to Sao Paulo, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Bogotá (BOG) is the most affordable 1-stop option, with an average round-trip price of $1,333.

What’s the fastest layover option from Washington, D.C. Dulles Intl Airport to Sao Paulo?

Shortest average travel time for 1-stop one-way flights from Washington, D.C. Dulles Intl Airport to Sao Paulo, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Atlanta (ATL) have the shortest average one-way travel time for 1-stop routes: 12h 38m.

Which airport typically offers the quickest layover for flights from Washington, D.C. Dulles Intl Airport to Sao Paulo?

Average layover duration for 1-stop one-way flights from Washington, D.C. Dulles Intl Airport to Sao Paulo, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Atlanta (ATL) offer the fastest connection on this route, with an average layover time of 2h 11m.

Reviews of airlines servicing Sao Paulo

Get insights into the airlines that provide service to Sao Paulo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sao Paulo. Reviews last updated 8월 18, 2025.
See what other customers who have flown with Copa Airlines, United Airlines, and Avianca from Washington, D.C. Dulles Intl Airport to Sao Paulo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Copa Airlines
7.5
Good
1,510 reviews

Boarding

7.8

Overall

7.5

Comfort

7.4

Entertainment

6.8

Crew

8.1

Food

6.8

Reviews

1 / 20
4.0
Okay

Paul,Jun 2025

PTY - MIA

The boarding process was terrible. No one followed the group numbers. Everyone got up and stood in the tiles upon landing. People kept getting up during the meal and beverage service to go the bathrooms, the crew had to go back and forth in the isles, the service took forever.
Copa Airlines
7.5
Good
1,510 reviews
Copa Airlines
7.5
Good
1,510 reviews

Boarding

7.8

Overall

7.5

Comfort

7.4

Entertainment

6.8

Crew

8.1

Food

6.8

Reviews

1 / 20
4.0
Okay

Paul,Jun 2025

PTY - MIA

The boarding process was terrible. No one followed the group numbers. Everyone got up and stood in the tiles upon landing. People kept getting up during the meal and beverage service to go the bathrooms, the crew had to go back and forth in the isles, the service took forever.
United Airlines
7.4
Good
8,925 reviews
Copa Airlines
7.5
Good
1,510 reviews

Boarding

7.8

Overall

7.5

Comfort

7.4

Entertainment

6.8

Crew

8.1

Food

6.8

Reviews

1 / 20
4.0
Okay

Paul,Jun 2025

PTY - MIA

The boarding process was terrible. No one followed the group numbers. Everyone got up and stood in the tiles upon landing. People kept getting up during the meal and beverage service to go the bathrooms, the crew had to go back and forth in the isles, the service took forever.
Avianca
6.7
Okay
2,407 reviews
Copa Airlines
7.5
Good
1,510 reviews

Boarding

7.8

Overall

7.5

Comfort

7.4

Entertainment

6.8

Crew

8.1

Food

6.8

Reviews

1 / 20
4.0
Okay

Paul,Jun 2025

PTY - MIA

The boarding process was terrible. No one followed the group numbers. Everyone got up and stood in the tiles upon landing. People kept getting up during the meal and beverage service to go the bathrooms, the crew had to go back and forth in the isles, the service took forever.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Sao Paulo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Sao Paulo?

    Copa Airlines can get you from Washington, D.C. Dulles Intl Airport to Sao Paulo in just under 20h 45m. Your travel time can differ by up to . There are 4749 mi between Washington, D.C. Dulles Intl Airport and Sao Paulo.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Sao Paulo round-trip?

    Flying on Avianca is currently your cheapest option to Sao Paulo, with prices starting at $509. Additional round-trip tickets that might be worth considering are offered by Copa Airlines and LATAM Airlines, with the lowest prices starting at $517 and $573, respectively. Avianca is priced at 41% lower than the current average price of a flight leaving 3 months from now.

  • What are the most popular routes from Washington, D.C. Dulles Intl Airport to Sao Paulo?

    While some choose either Washington, D.C. Dulles Intl - Sao Paulo Viracopos or Washington, D.C. Dulles Intl - Sao Paulo Congonhas, Washington, D.C. Dulles Intl - Sao Paulo Guarulhos Intl is the most popular route from Washington, D.C. Dulles Intl Airport to Sao Paulo.

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Sao Paulo?

    While on average a flight from Washington, D.C. Dulles Intl Airport to Sao Paulo is generally $1,101, our data shows the cheapest flight currently is $402. When looking at the most popular route, (Washington, D.C. Dulles Intl - Sao Paulo Guarulhos Intl), you can expect to pay $535 for that flight.

  • Can I find deals for flights from Dulles Intl to Sao Paulo that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Sao Paulo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Sao Paulo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Sao Paulo.

  • Can I find deals for business class flights from Dulles Intl to Sao Paulo?

    Yes. Cheapflights offers flight deals from Dulles Intl to Sao Paulo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Sao Paulo?

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Sao Paulo (average of $672). Flying from Washington, D.C. Dulles Intl Airport to Sao Paulo in December is currently the most expensive (average of $1,209). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 5 airlines flying from Dulles Intl to Sao Paulo

Discover the top 5 airlines that operate flights from Dulles Intl to Sao Paulo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated 8월 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$509Average$696FlexibilityNo cancel feeOn-time71%
Copa AirlinesCheapest$517Average$757FlexibilityNo cancel feeOn-time70%
LATAM AirlinesCheapest$573Average$627FlexibilityNo cancel feeOn-time81%
GOLCheapest$584Average$776FlexibilityNo cancel feeOn-time74%
United AirlinesCheapest$611Average$925FlexibilityNo cancel feeOn-time69%

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