$435 Cheap Flights from Asuncion (ASU) to Washington (IAD)

View $435 flight on Thu, Nov 20, 2025Opens in a new window

Popular airlines from Asuncion (ASU-Silvio Pettirossi Intl.) to Washington Dulles Intl. Airport (IAD)

Cheap Flights from Asuncion to Washington (ASU-IAD)

Prices were available within the past 7 days and start at $435 for one-way flights and $823 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

avianca
Thu, Nov 6 - Wed, Nov 12
ASU
Asuncion
IAD
Washington
$823 Roundtrip, found 4 days ago
$823
Roundtrip
found 4 days ago
Select avianca flight, departing Thu, Nov 6 from Asuncion to Washington, returning Wed, Nov 12, priced at $823 found 4 days ago
LATAM Airlines Group
Sat, Nov 8 - Tue, Nov 18
ASU
Asuncion
IAD
Washington
$828 Roundtrip, found 4 days ago
$828
Roundtrip
found 4 days ago
Select LATAM Airlines Group flight, departing Sat, Nov 8 from Asuncion to Washington, returning Tue, Nov 18, priced at $828 found 4 days ago
LATAM Airlines Group
Thu, Nov 20 - Thu, Dec 4
ASU
Asuncion
IAD
Washington
$843 Roundtrip, found 6 days ago
$843
Roundtrip
found 6 days ago
Select LATAM Airlines Group flight, departing Thu, Nov 20 from Asuncion to Washington, returning Thu, Dec 4, priced at $843 found 6 days ago
LATAM Airlines Group
Sun, Nov 16 - Thu, Dec 4
ASU
Asuncion
IAD
Washington
$845 Roundtrip, found 6 days ago
$845
Roundtrip
found 6 days ago
Select LATAM Airlines Group flight, departing Sun, Nov 16 from Asuncion to Washington, returning Thu, Dec 4, priced at $845 found 6 days ago
LATAM Airlines Group
Thu, Nov 6 - Wed, Nov 12
ASU
Asuncion
IAD
Washington
$895 Roundtrip, found 4 days ago
$895
Roundtrip
found 4 days ago
Select LATAM Airlines Group flight, departing Thu, Nov 6 from Asuncion to Washington, returning Wed, Nov 12, priced at $895 found 4 days ago
avianca
Tue, Nov 18 - Thu, Dec 4
ASU
Asuncion
IAD
Washington
$918 Roundtrip, found 3 days ago
$918
Roundtrip
found 3 days ago
Select avianca flight, departing Tue, Nov 18 from Asuncion to Washington, returning Thu, Dec 4, priced at $918 found 3 days ago
LATAM Airlines Group
Thu, Nov 6 - Wed, Nov 12
ASU
Asuncion
IAD
Washington
$928 Roundtrip, found 4 days ago
$928
Roundtrip
found 4 days ago
Select LATAM Airlines Group flight, departing Thu, Nov 6 from Asuncion to Washington, returning Wed, Nov 12, priced at $928 found 4 days ago
GOL Linhas Aereas S.A.
Mon, Nov 17 - Tue, Dec 2
ASU
Asuncion
IAD
Washington
$949 Roundtrip, found 3 days ago
$949
Roundtrip
found 3 days ago
Select GOL Linhas Aereas S.A. flight, departing Mon, Nov 17 from Asuncion to Washington, returning Tue, Dec 2, priced at $949 found 3 days ago
United
Wed, Dec 24 - Wed, Dec 31
ASU
Asuncion
IAD
Washington
$961 Roundtrip, found 6 days ago
$961
Roundtrip
found 6 days ago
Select United flight, departing Wed, Dec 24 from Asuncion to Washington, returning Wed, Dec 31, priced at $961 found 6 days ago
Copa
Wed, Apr 8 - Wed, Apr 15
ASU
Asuncion
IAD
Washington
$974 Roundtrip, found 15 hours ago
$974
Roundtrip
found 15 hours ago
Select Copa flight, departing Wed, Apr 8 from Asuncion to Washington, returning Wed, Apr 15, priced at $974 found 15 hours ago

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $828
DCA
Ronald Reagan Washington National
CheapestClosest
Average driving time to city center8 min
Flights from $828

Frequently asked questions

How much does a flight from Silvio Pettirossi Intl. Airport (ASU) to Washington Dulles Intl. Airport (IAD) cost?
Lock in a cheap one-way flight from $435 or cheap return flight from $823 from Silvio Pettirossi Intl. Airport (ASU) to Washington Dulles Intl. Airport (IAD) 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 Silvio Pettirossi Intl. Airport (ASU) to Washington Dulles Intl. Airport (IAD)?
The cheapest month to fly from ASU to IAD is November, when demand is low. Off-peak season is usually when better flight deals are available between these airports.
What is the cheapest airline that flies from Silvio Pettirossi Intl. Airport (ASU) to Washington Dulles Intl. Airport (IAD)?
Use the filters on Expedia to compare airlines and find the most affordable carrier that'll take you from ASU to IAD. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Silvio Pettirossi Intl. Airport (ASU) to Washington Dulles Intl. Airport (IAD)?
Nonstop flights from Silvio Pettirossi Intl. Airport (ASU) to Washington Dulles Intl. Airport (IAD) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ASU to IAD?
Usually you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* But this can change based on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Silvio Pettirossi Intl. Airport (ASU) to Washington Dulles Intl. Airport (IAD)?
To reach Washington Dulles Intl. Airport (IAD) on schedule, opt for a flight that leaves from Silvio Pettirossi Intl. Airport (ASU) before 3 PM. The chance 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 Silvio Pettirossi Intl. Airport (ASU) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your plane ticket from ASU to IAD right before your getaway is usually more expensive. However, if there's some wiggle room with your departure times and dates, you could land a cheap last-minute fare.
Is it cheaper to book an ASU to IAD flight and hotel package?
You can save money by booking an ASU to IAD 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 selecting your preferred flights and accommodations, you can add extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Silvio Pettirossi Intl. Airport (ASU) to Washington Dulles Intl. Airport (IAD)?
Generally, it's possible to cancel or reschedule your ASU to IAD flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Silvio Pettirossi Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
Copa, GOL Linhas Aereas S.A., LATAM Airlines Group, United, avianca
Roundtrip price
$823
Distance
4618 mi

Book with confidence

Asuncion to Washington Flights

The cheapest times to fly from Asuncion to Washington

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 Asuncion to Washington are during the month of November. You can find some of the cheapest flights from Asuncion to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Asuncion to Washington

Sunday is one of the best days to book for cheap flights from Asuncion to Washington: 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 Asuncion to Washington

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 Asuncion to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $435 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 Asuncion to Washington 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 Asuncion to Washington 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.

 

Asuncion to Washington Flights

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*Available to One Key members.