HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Asuncion

$661+ Cheap flights from Dulles Intl (IAD) to Asuncion (ASU)

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 4/17. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — ASU
Apr 8 — Apr 151
Tue 4/8
Tue 4/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Asuncion with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Asuncion Silvio Pettirossi are usually found in April or November, booked 70 days in advance, depart on a Monday or Tuesday and return on a Thursday

Cheap flight deals from Dulles Intl to Asuncion

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Asuncion (ASU). 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 April 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$923
(KAYAK)

One-way from

$661
(KAYAK)

Popular in

December

Cheapest in

April

Average price

$572
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Asuncion Silvio Pettirossi flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Asuncion Silvio Pettirossi flights.
Search Deals
From Washington, D.C. Dulles Intl to Asuncion Silvio Pettirossi
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Asuncion Silvio Pettirossi
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($92 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Dulles Intl to Asuncion

Cheapest flights from Dulles Intl to Asuncion
Explore the most affordable flight options available from Dulles Intl to Asuncion. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2025.

This KAYAK deal was found by Cheapflights users on 4/2. 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.
Tue 10/212:25 amIAD - ASU
1 stop20h 28mCopa Airlines
Sat 11/17:42 amASU - IAD
1 stop17h 21mCopa Airlines
Deal found 4/2$923
This Mytrip deal was found by Cheapflights users on 4/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/57:00 amIAD - ASU
3 stops27h 00mMultiple Airlines
Wed 4/98:10 amASU - IAD
1 stop22h 25mMultiple Airlines
Deal found 4/1$941
This LATAM Airlines deal was found by Cheapflights users on 4/1. 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 LATAM Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/16:00 amIAD - ASU
2 stops28h 20mLATAM Airlines
Sun 6/86:55 pmASU - IAD
2 stops18h 04mLATAM Airlines
Deal found 4/1$975
This Avianca deal was found by Cheapflights users on 4/1. 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.
Tue 6/31:05 amIAD - ASU
2 stops50h 35mAvianca
Fri 6/138:10 amASU - IAD
1 stop22h 25mAvianca
Deal found 4/1$984
This United Airlines deal was found by Cheapflights users on 4/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3110:10 pmIAD - ASU
2 stops24h 47mUnited Airlines
Tue 6/171:44 amASU - IAD
2 stops23h 14mUnited Airlines
Deal found 4/2$1,221

Cheapflights Fare Finder

Customize your flight search to find flights from Dulles Intl to Asuncion 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 April 3, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Asuncion that are best for you.

Fly from

Dulles Intl

Fly to

Asuncion

Route

Depart

Return

Price

Washington, D.C.Asuncion

IAD - ASU

IADASU

Washington, D.C. Dulles Intl

Sat 5/31

2:21 am-11:57 pm

1 stop20h 36m

Asuncion Silvio Pettirossi

Mon 6/9

3:44 am-12:29 am

1 stop21h 45m

$923

Washington, D.C.Asuncion

IAD - ASU

IADASU

Washington, D.C. Dulles Intl

Sat 5/31

4:05 am-10:00 am

3 stops28h 55m

Asuncion Silvio Pettirossi

Mon 6/9

11:05 am-6:05 pm

3 stops32h 00m

$941

Washington, D.C.Asuncion

IAD - ASU

IADASU

Washington, D.C. Dulles Intl

Sun 6/1

6:00 am-11:20 am

2 stops28h 20m

Asuncion Silvio Pettirossi

Thu 6/12

6:55 pm-9:17 pm

2 stops27h 22m

$975

Washington, D.C.Asuncion

IAD - ASU

IADASU

Washington, D.C. Dulles Intl

Tue 6/3

1:05 am-4:40 am

2 stops50h 35m

Asuncion Silvio Pettirossi

Fri 6/13

8:10 am-5:35 am

1 stop22h 25m

$984

Washington, D.C.Asuncion

IAD - ASU

IADASU

Washington, D.C. Dulles Intl

Sat 5/31

10:10 pm-11:57 pm

2 stops24h 47m

Asuncion Silvio Pettirossi

Tue 6/17

1:44 am-11:58 pm

2 stops23h 14m

$1,221

Washington, D.C.Asuncion

IAD - ASU

IADASU

Washington, D.C. Dulles Intl

Thu 4/17

9:28 am-11:59 pm

1 stop13h 31m

$661

Washington, D.C.Asuncion

IAD - ASU

IADASU

Washington, D.C. Dulles Intl

Thu 4/17

12:11 pm-10:05 am

2 stops20h 54m

$695

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Compare providers for flights from Dulles Intl to Asuncion

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Asuncion in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Asuncion flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Asuncion flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Asuncion flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Asuncion flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Asuncion flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Asuncion

Have a flexible travel schedule? Discover the best time to fly to Asuncion 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 Asuncion

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Asuncion. Price data was last updated on March 28, 2025.

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Asuncion may vary depending on when you book. For the best chance of a lower fare, look to book 70 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 Asuncion?

Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Asuncion (average of $715). Flying from Washington, D.C. Dulles Intl Airport to Asuncion in December is currently the most expensive (average of $1,024). 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 ASU?

Find hourly flight availability from Dulles Intl to Asuncion. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 3, 2025.

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Asuncion is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 46% on airfare.

Rainfall in Asuncion by month

Plan your trip to Asuncion by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Asuncion ranges from 1.6 - 5.5 inches per month. January is typically the wettest month, when rainfall can reach 5.5 in. August is typically the driest time to visit Asuncion when rainfall is around 1.6 in.

Temperature in Asuncion by month

Plan your trip to Asuncion by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Asuncion, use this chart to help with planning. For those seeking warmer temperatures, January is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of June, when temperatures are typically at their lowest (around 64.4 F).

Reviews of airlines servicing Asuncion

Get insights into the airlines that provide service to Asuncion. 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 Asuncion. Reviews last updated April 3, 2025.
Read reviews from past customers who have flown Copa Airlines, LATAM Airlines and United Airlines from Washington, D.C. to Asuncion. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Copa Airlines
7.6
Good
1,400 reviews

Overall

7.6

Boarding

7.8

Crew

8.1

Entertainment

6.8

Comfort

7.4

Food

6.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LIM - PTY

you go security buy an expensive bottle of water to take on the plane and then you have to go to another security point where they confiscate your water, the planes left on time and arrived on time. excellent food was mostly tasteless and overheated, no entertainment. wifi was glitchy.
Copa Airlines
7.6
Good
1,400 reviews
Copa Airlines
7.6
Good
1,400 reviews

Overall

7.6

Boarding

7.8

Crew

8.1

Entertainment

6.8

Comfort

7.4

Food

6.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LIM - PTY

you go security buy an expensive bottle of water to take on the plane and then you have to go to another security point where they confiscate your water, the planes left on time and arrived on time. excellent food was mostly tasteless and overheated, no entertainment. wifi was glitchy.
LATAM Airlines
7.5
Good
1,754 reviews
Copa Airlines
7.6
Good
1,400 reviews

Overall

7.6

Boarding

7.8

Crew

8.1

Entertainment

6.8

Comfort

7.4

Food

6.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LIM - PTY

you go security buy an expensive bottle of water to take on the plane and then you have to go to another security point where they confiscate your water, the planes left on time and arrived on time. excellent food was mostly tasteless and overheated, no entertainment. wifi was glitchy.
United Airlines
7.4
Good
8,619 reviews
Copa Airlines
7.6
Good
1,400 reviews

Overall

7.6

Boarding

7.8

Crew

8.1

Entertainment

6.8

Comfort

7.4

Food

6.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LIM - PTY

you go security buy an expensive bottle of water to take on the plane and then you have to go to another security point where they confiscate your water, the planes left on time and arrived on time. excellent food was mostly tasteless and overheated, no entertainment. wifi was glitchy.
Avianca
6.7
Okay
2,304 reviews
Copa Airlines
7.6
Good
1,400 reviews

Overall

7.6

Boarding

7.8

Crew

8.1

Entertainment

6.8

Comfort

7.4

Food

6.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LIM - PTY

you go security buy an expensive bottle of water to take on the plane and then you have to go to another security point where they confiscate your water, the planes left on time and arrived on time. excellent food was mostly tasteless and overheated, no entertainment. wifi was glitchy.

Related info for your journey

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

  • What airport do you fly into for flights to Asuncion from Washington, D.C. Dulles Intl?

    Located just 7.8 mi from the city center, Asuncion Silvio Pettirossi is the airport most travelers will use when flying to Asuncion from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Silvio Pettirossi (ASU) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 2 different airlines.

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

    Cheapflights users have booked flights from Washington, D.C. Dulles Intl Airport to Asuncion round-trip from $923. Other airlines that can offer you cheap pricing are LATAM Airlines, from $975, and Avianca, from $984. You may be able to fly from Washington, D.C. Dulles Intl Airport to Asuncion for 6% less than the average price by searching for these airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Asuncion 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 Asuncion?

    Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Asuncion (average of $715). Flying from Washington, D.C. Dulles Intl Airport to Asuncion in December is currently the most expensive (average of $1,024). 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

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 Dulles Intl to Asuncion

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Asuncion flights
Baltimore to Asuncion flights

Top 2 airlines flying from Dulles Intl to Asuncion

Discover the top 2 airlines that operate flights from Dulles Intl to Asuncion. 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 April 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
AviancaCheapest$339Average$600FlexibilityNo cancel feeOn-time71%
Copa AirlinesCheapest$599Average$1,017FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.