$369 Cheap Flights from Washington (IAD) to Iguassu Falls (IGU)

View $369 flight on Sun, Apr 12, 2026Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Iguassu Falls (IGU-Foz do Iguacu Intl.)

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Cheap Flights from Washington to Iguassu Falls (IAD-IGU)

Prices were available within the past 7 days and start at $369 for one-way flights and $795 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

LATAM Airlines Group
Sat, Nov 29 - Sat, Dec 6
IAD
Washington
IGU
Foz do Iguaçu
$795 Roundtrip, found 6 hours ago
$795
Roundtrip
found 6 hours ago
Select LATAM Airlines Group flight, departing Sat, Nov 29 from Washington to Foz do Iguaçu, returning Sat, Dec 6, priced at $795 found 6 hours ago
LATAM Airlines Group
Sat, Nov 29 - Sat, Dec 6
IAD
Washington
IGU
Foz do Iguaçu
$801 Roundtrip, found 6 hours ago
$801
Roundtrip
found 6 hours ago
Select LATAM Airlines Group flight, departing Sat, Nov 29 from Washington to Foz do Iguaçu, returning Sat, Dec 6, priced at $801 found 6 hours ago
LATAM Airlines Group
Sat, Nov 29 - Sat, Dec 6
IAD
Washington
IGU
Foz do Iguaçu
$803 Roundtrip, found 6 hours ago
$803
Roundtrip
found 6 hours ago
Select LATAM Airlines Group flight, departing Sat, Nov 29 from Washington to Foz do Iguaçu, returning Sat, Dec 6, priced at $803 found 6 hours ago
Air Canada
Sat, Mar 14 - Sun, Mar 22
IAD
Washington
IGU
Foz do Iguaçu
$826 Roundtrip, found 3 days ago
$826
Roundtrip
found 3 days ago
Select Air Canada flight, departing Sat, Mar 14 from Washington to Foz do Iguaçu, returning Sun, Mar 22, priced at $826 found 3 days ago
LATAM Airlines Group
Sat, Mar 14 - Sun, Mar 22
IAD
Washington
IGU
Foz do Iguaçu
$839 Roundtrip, found 3 days ago
$839
Roundtrip
found 3 days ago
Select LATAM Airlines Group flight, departing Sat, Mar 14 from Washington to Foz do Iguaçu, returning Sun, Mar 22, priced at $839 found 3 days ago
LATAM Airlines Group
Sat, Mar 14 - Sun, Mar 22
IAD
Washington
IGU
Foz do Iguaçu
$851 Roundtrip, found 3 days ago
$851
Roundtrip
found 3 days ago
Select LATAM Airlines Group flight, departing Sat, Mar 14 from Washington to Foz do Iguaçu, returning Sun, Mar 22, priced at $851 found 3 days ago
Air Canada
Sat, Mar 14 - Sun, Mar 22
IAD
Washington
IGU
Foz do Iguaçu
$901 Roundtrip, found 3 days ago
$901
Roundtrip
found 3 days ago
Select Air Canada flight, departing Sat, Mar 14 from Washington to Foz do Iguaçu, returning Sun, Mar 22, priced at $901 found 3 days ago
avianca
Mon, Dec 15 - Tue, Apr 7
IAD
Washington
IGU
Foz do Iguaçu
$912 Roundtrip, found 3 days ago
$912
Roundtrip
found 3 days ago
Select avianca flight, departing Mon, Dec 15 from Washington to Foz do Iguaçu, returning Tue, Apr 7, priced at $912 found 3 days ago
Aeromexico
Sat, Nov 29 - Sat, Dec 6
IAD
Washington
IGU
Foz do Iguaçu
$963 Roundtrip, found 6 hours ago
$963
Roundtrip
found 6 hours ago
Select Aeromexico flight, departing Sat, Nov 29 from Washington to Foz do Iguaçu, returning Sat, Dec 6, priced at $963 found 6 hours ago
GOL Linhas Aereas S.A.
Sat, Mar 14 - Sun, Mar 22
IAD
Washington
IGU
Foz do Iguaçu
$1,133 Roundtrip, found 3 days ago
$1,133
Roundtrip
found 3 days ago
Select GOL Linhas Aereas S.A. flight, departing Sat, Mar 14 from Washington to Foz do Iguaçu, returning Sun, Mar 22, priced at $1,133 found 3 days ago

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Foz do Iguacu Intl. Airport (IGU) cost?
Secure a cheap one-way flight from $369 or cheap return flight from $795 from Washington Dulles Intl. Airport (IAD) to Foz do Iguacu Intl. Airport (IGU) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Foz do Iguacu Intl. Airport (IGU)?
November is the least expensive month to fly from IAD to IGU. Traveling during an off-peak travel window is often the key to finding better deals on flights.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Foz do Iguacu Intl. Airport (IGU)?
To find the cheapest airline flying from IAD to IGU, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Foz do Iguacu Intl. Airport (IGU)?
Nonstop flights from Washington Dulles Intl. Airport (IAD) to Foz do Iguacu Intl. Airport (IGU) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from IAD to IGU?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change depending on a number of factors, such as the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Foz do Iguacu Intl. Airport (IGU)?
To reach Foz do Iguacu Intl. Airport (IGU) on schedule, pick a flight that leaves from Washington Dulles Intl. Airport (IAD) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Foz do Iguacu Intl. Airport (IGU) last-minute?
Last-minute bookings from IAD to IGU are usually more expensive. To secure the cheapest rates, start searching for flights early. That said, if you can play around with your travel dates, you may land a cheap ticket right before your trip.
Is it cheaper to book an IAD to IGU flight and hotel package?
You'll generally save money by booking an IAD to IGU flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After choosing your ideal flights and accommodations, you can add extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Foz do Iguacu Intl. Airport (IGU)?
If you reserved your IAD to IGU flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Foz do Iguacu Intl.
Airlines serving
Azul, Copa, Delta
Roundtrip price
$795
Distance
4700 mi

Book with confidence

Washington to Iguassu Falls Flights

The cheapest times to fly from Washington to Iguassu Falls

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Iguassu Falls are during the month of November. You can find some of the cheapest flights from Washington to Iguassu Falls with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Iguassu Falls

Sunday is one of the best days to book for cheap flights from Washington to Iguassu Falls: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Iguassu Falls

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Iguassu Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $369 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Iguassu Falls flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Iguassu Falls airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Washington to Iguassu Falls Flights

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*Available to One Key members.