IAD - ASU

$394 Find Cheap Flights from Washington Dulles Airport to Asuncion - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Asuncion departing on 9/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$713
Typical prices: $1,157-$1,299
Copa Airlines
Sun 10/11Mon 10/26
IAD - ASU • 1 stop
Cheapest one-way
$394
Multiple Airlines
Tue 9/8
IAD - ASU • 3 stops
Top airlines
Cheapest • from $713 (round-trip)
Best reviews • 7.6 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Dulles Intl and Asuncion. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $976 (round-trip)
Shortest trip • 12h 05m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 62% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Asuncion!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Dulles Intl to Asuncion (IAD-ASU)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Asuncion that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Asuncion

Sun, Oct 11 - Mon, Oct 26
Copa Airlines Logo
2:25 am - 12:03 am
IAD
-
ASU
20h 38m
1 stop
Copa Airlines Logo
6:34 am - 12:37 am
ASU
-
IAD
19h 03m
1 stop
$713Copa Airlines
Wed, Sep 30 - Wed, Oct 7
Copa Airlines Logo
4:34 pm - 12:18 am
IAD
-
ASU
30h 44m
1 stop
Copa Airlines Logo
6:33 am - 12:32 am
ASU
-
IAD
18h 59m
1 stop
$713Copa Airlines
Wed, Oct 14 - Mon, Oct 19
Copa Airlines Logo
4:34 pm - 12:03 am
IAD
-
ASU
30h 29m
1 stop
Copa Airlines Logo
1:47 am - 4:20 am
ASU
-
IAD
27h 33m
1 stop
$713Copa Airlines
Wed, Oct 7 - Tue, Nov 24
Copa Airlines Logo
4:34 pm - 5:31 am
IAD
-
ASU
11h 57m
1 stop
Copa Airlines Logo
1:47 am - 3:15 am
ASU
-
IAD
27h 28m
1 stop
$771Copa Airlines
Tue, Nov 10 - Mon, Feb 8
LATAM Airlines Logo
12:30 pm - 6:15 am
IAD
-
ASU
39h 45m
2 stops
LATAM Airlines Logo
8:00 am - 12:20 am
ASU
-
IAD
18h 20m
2 stops
$907LATAM Airlines
Tue, Nov 10 - Wed, Feb 10
LATAM Airlines Logo
6:20 pm - 6:15 am
IAD
-
ASU
33h 55m
2 stops
LATAM Airlines Logo
8:00 am - 12:20 am
ASU
-
IAD
18h 20m
2 stops
$907LATAM Airlines
Tue, Nov 24 - Thu, Dec 3
LATAM Airlines Logo
3:00 pm - 6:15 am
IAD
-
ASU
37h 15m
2 stops
LATAM Airlines Logo
8:00 am - 12:39 am
ASU
-
IAD
18h 39m
2 stops
$907LATAM Airlines
Tue, Aug 11 - Wed, Aug 26
Avianca Logo
3:35 pm - 4:40 am
IAD
-
ASU
12h 05m
1 stop
Avianca Logo
8:25 am - 2:45 am
ASU
-
IAD
19h 20m
2 stops
$1,098Avianca
Tue, Aug 11 - Wed, Aug 26
Avianca Logo
6:50 am - 4:40 am
IAD
-
ASU
20h 50m
1 stop
Avianca Logo
8:25 am - 2:45 am
ASU
-
IAD
19h 20m
2 stops
$1,098Avianca
Tue, Aug 11 - Wed, Aug 26
Avianca Logo
3:35 pm - 4:40 am
IAD
-
ASU
12h 05m
1 stop
Avianca Logo
8:25 am - 5:20 am
ASU
-
IAD
21h 55m
1 stop
$1,124Avianca
Booking Insights

KAYAK's insights & trends for Dulles Intl to Asuncion flights

Get data-powered insights and trends into flights from Dulles Intl to Asuncion to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Asuncion?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Asuncion departing in September.

Flight prices are below average for this route right now.

Flights to Asuncion from Washington, D.C. Dulles Intl Airport usually cost between $898 and $1,014 in September.
The lowest price found in the past 5 days was $713 on Copa Airlines (Sep 30-Oct 7).

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Asuncion?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Asuncion, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Asuncion is January, where tickets cost $397 (return) on average. On the other hand, the most expensive months are May and December, where the average cost of round-trip tickets is $1,408 and $1,272 respectively.

Good to know

Low season

March

Cheapest flight

$394
Best time to beat the crowds but there is an average 13% increase in price.
Most popular time to fly with an average 21% increase in price.
Flight from Washington Dulles Airport to Asuncion

When to book flights from Dulles Intl to Asuncion

Are your dates flexible? Find out the best times to travel from Dulles Intl to Asuncion based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Asuncion flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Asuncion?

    In the last 5 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Asuncion was $394 for a one-way ticket and $713 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Asuncion?

    Yes, you’ll need a passport to travel to Asuncion from Washington Dulles Airport.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Asuncion?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Washington Dulles Airport to Asuncion?

    Star Alliance is the only airline alliance operating flights between Washington Dulles Airport and Asuncion.

  • Which is the best airline for flights from Washington, D.C. to Asuncion, Copa Airlines or Avianca?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Asuncion are Copa Airlines and Avianca. With an average price for the route of $1,113 and an overall rating of 7.6, Copa Airlines is the most popular choice. Avianca is also a great choice for the route, with an average price of $1,110 and an overall rating of 6.5.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Asuncion?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Asuncion.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Asuncion?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Asuncion from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Asuncion?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Asuncion with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and ASU can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Asuncion?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Asuncion from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Dulles Intl to Asuncion

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Asuncion. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Asuncion? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.6
Copa AirlinesOverall score based on 1559 reviews
8.1Crew
7.4Comfort
6.8Entertainment
7.8Boarding
6.9Food
Airline reviews

There should be a warning regarding the quality of the aircraft on the website as we reserve the tickets. There was no TV or any type of screen onboard. The wifi they offer is good for nothing. Traveling 9 hours straight with kids and no type of entetainment was horrible. I wish I had been informed prior so I could buy a ticket with another airline. The food was a joke too. A very tiny portion per passenger. They also charged $100 per checked bag. With United I used to pay $60. So, fair to say that I wont be flying Copa anymore. Their aircraft was super old, outdated, no entertainment, with nearly no onboard food.

2.0 MediocreAnonymous, Dec 2025
LAS - PTY
Read more Copa Airlines reviews

There should be a warning regarding the quality of the aircraft on the website as we reserve the tickets. There was no TV or any type of screen onboard. The wifi they offer is good for nothing. Traveling 9 hours straight with kids and no type of entetainment was horrible. I wish I had been informed prior so I could buy a ticket with another airline. The food was a joke too. A very tiny portion per passenger. They also charged $100 per checked bag. With United I used to pay $60. So, fair to say that I wont be flying Copa anymore. Their aircraft was super old, outdated, no entertainment, with nearly no onboard food.

Very strict carry on rules meant most of the plane had to gate check their luggage. As is often the case had things that were broken because of this, but I appreciated not being charged to gate check. Otherwise good flight and great crew once on the plane

I liked the meatloaf the chicken was awful but the plane was on time and got there and the staff was nice.

Boarding was quick & efficient; they gave boarding groups due priority; staff & air crew were very cordial and helpful, pleasant flight.

Very happy with my flight. I would definitely recommend it.

Did upgrade, travel in business it was great (more room I could sleep)

Placed us in the last rear row of the plane so could not recline seats because of the rear wall, and also made it more of a tight space when the passenger in front reclined their seat. While understand seat assignments, every passenger should be afforded a reclining seat. The odor control scent from the restrooms was overwhelming strong. My wife and I could not deal with it, and she suffered a terrible headache as a result. I kept getting hit by the crew since I was on the ilse seat. No apologies, nothing. They made me feel like I was supposed to take the beating for a 3 hr flight.

There was no individual at the front check in when I arrived. I waited for at least 15 minutes and walked around asking security/janitors if they could help and they did not have a solution. So I had to take my checked bag through security and they threw away some of my items. I ended up making it to the gate only a few minutes before it closed due to my waiting for an agent at check in.

It would have been better if they don't separate families in seating. We were seated in the aile row in the middle of a family of four. It would have been better if they they seat the family of four together than separated.

Boarding groups were called up in Spanish only. Luckily I know some of the language. They gave out grilled cheese sandwiches and a cup of fruit. I was very disappointed. I could only eat the cup of fruit because the only other option was vanilla pudding. The entertainment system and seating were great though.

We booked seats next to each other. When we got the boarding passes, they were for different rows. The crew were reluctant to help us, so we ended up sitting separately. 1. What’s the point of reserving by seat number if you’re not going to honor that reservation? 2. Even if it gets messed up between reservation and boarding, how is the crew going to deny us the opportunity to arrange to sit together. There were plenty of people flying alone. It could’ve been easily accommodated. Not very customer-friendly at all.

The seats were the worst I have ever flown Too narrow, did not recline and the actual seat was hard as a rock. I will tell all travelers to stay away from Avianca flights.

The worst experience I've ever had because the "people" @ Avianca wouldn't let me fly because they said I needed a round trip ticket

Seating was tight. Seats don't recline. Initial flight was cancelled. Lost two days of vacation.

It was delayed and I lost my connection flight to Cali and I missed my Mom's funeral

I actually upgraded to the medium level of seats from basic and even doing that it may have been physically the most uncomfortable flight I have ever had. They packed everyone like is a train to death camp. It was a red eye so I hoped to get some sleep but it was physically impossible to find a comfortable way to rest. I met other folks on the same flight and they said the same thing. It was an utterly miserable flight and if I have any other options I will never fly with them again

Last seat of Bussines Class it does recline but passenger seating behind kept pushing since they did not have space once my seat was reclined

Did not fly with Pakistan International Airlines. Have never flown with Pakistan International Airlines.

I receive a service for what I pay, so it is fair.

They charged me $120 to check one bag and then charged me another $120 for a carryon. Ridiculous!

Everything you need to know for your flight from Dulles Intl to Asuncion

Information on your arrival and departure airports