IAD - ASU

$470 Find Cheap Flights from Washington Dulles Airport to Asuncion

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 5/17. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Asuncion

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Asuncion, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Asuncion, as well as popular online travel agencies
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41 299 237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$925
Typical prices: $1,092-$950
Multiple Airlines
Tue 9/15Wed 9/30
IAD - ASU • 3 stops
Cheapest one-way
$470
Multiple Airlines
Sun 5/17
IAD - ASU • 2 stops
Top airlines
Cheapest • from $1,064 (round-trip)
Best reviews • 7.5 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 $880 (round-trip)
Shortest trip • 12h 19m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 63% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
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

Tue, Sep 15 - Wed, Sep 30
Multiple Airlines Logo
9:55 am - 8:15 pm
IAD
-
ASU
33h 20m
3 stops
Multiple Airlines Logo
12:05 pm - 3:25 pm
ASU
-
IAD
28h 20m
2 stops
$925Multiple Airlines
Tue, Sep 15 - Wed, Sep 30
Multiple Airlines Logo
4:00 pm - 8:15 pm
IAD
-
ASU
27h 15m
3 stops
Multiple Airlines Logo
9:45 am - 3:25 pm
ASU
-
IAD
30h 40m
3 stops
$981Multiple Airlines
Sat, Sep 5 - Sat, Sep 26
Multiple Airlines Logo
3:35 pm - 9:50 pm
IAD
-
ASU
29h 15m
2 stops
Multiple Airlines Logo
4:40 am - 2:15 pm
ASU
-
IAD
34h 35m
3 stops
$994Multiple Airlines
Wed, Jul 8 - Wed, Jul 15
Multiple Airlines Logo
6:50 am - 3:15 pm
IAD
-
ASU
31h 25m
3 stops
Multiple Airlines Logo
8:10 am - 6:15 pm
ASU
-
IAD
35h 05m
3 stops
$998Multiple Airlines
Wed, Jul 8 - Wed, Jul 15
Multiple Airlines Logo
3:35 pm - 1:40 am
IAD
-
ASU
33h 05m
2 stops
Multiple Airlines Logo
8:10 am - 3:55 pm
ASU
-
IAD
32h 45m
3 stops
$1,005Multiple Airlines
Wed, Jul 8 - Wed, Jul 15
Multiple Airlines Logo
3:35 pm - 1:40 am
IAD
-
ASU
33h 05m
2 stops
Multiple Airlines Logo
8:10 am - 2:15 pm
ASU
-
IAD
31h 05m
2 stops
$1,007Multiple Airlines
Fri, May 29 - Mon, Jun 8
Multiple Airlines Logo
6:50 am - 3:15 pm
IAD
-
ASU
31h 25m
3 stops
Multiple Airlines Logo
10:25 pm - 5:20 am
ASU
-
IAD
31h 55m
3 stops
$1,010Multiple Airlines
Sat, Sep 5 - Sat, Sep 26
Multiple Airlines Logo
3:35 pm - 9:50 pm
IAD
-
ASU
29h 15m
2 stops
Multiple Airlines Logo
8:10 am - 5:20 am
ASU
-
IAD
22h 10m
2 stops
$1,014Multiple Airlines
Mon, May 25 - Mon, Jun 1
Multiple Airlines Logo
3:45 pm - 4:40 am
IAD
-
ASU
35h 55m
3 stops
Multiple Airlines Logo
8:35 am - 6:15 pm
ASU
-
IAD
34h 40m
3 stops
$1,024Multiple Airlines
Sat, Jul 4 - Sun, Aug 30
Multiple Airlines Logo
6:50 am - 3:15 pm
IAD
-
ASU
31h 25m
3 stops
Multiple Airlines Logo
8:10 am - 2:15 pm
ASU
-
IAD
31h 05m
3 stops
$1,031Multiple Airlines
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.

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 December and May, where the average cost of round-trip tickets is $1,425 and $1,342 respectively.

Good to know

Low seasonMarch
Cheapest flight$470
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly and prices are also 3% lower on average.
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 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Asuncion was $470 for a one-way ticket and $998 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 $1,156 and an overall rating of 7.5, Copa Airlines is the most popular choice. Avianca is also a great choice for the route, with an average price of $910 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.
7.5
Copa AirlinesOverall score based on 1578 reviews
6.8Entertainment
7.8Boarding
7.4Comfort
6.8Food
8.1Crew
Airline reviews

I was flying business class, and the French fellow passengers were super noisy. It was not a comfortable flight. And the crew was not helpful.

2.0 MediocreFiruz, Apr 2026
MEX - PTY
Read more Copa Airlines reviews

I was flying business class, and the French fellow passengers were super noisy. It was not a comfortable flight. And the crew was not helpful.

Boarding was a mess, they call all priority members without distinction so gold, platinum, silver were all mixed together in a long line which defeats the purpose

Avoid at all costs. My wife had to stay back on a connecting flight as her parents flight was delayed. 10 days later on the way back they cancelled all our flights. We had to rebook all four of us on the next days flight.

The food is terrible I ask for water never got transport my mother we’re late and my sister from Lima was the worst waiting to long for wheelchair

Flight got delayed; had to go through security three times.

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

Simply as follows:- First, there was no vegetarian option for the meal Second, only 2 washrooms for the entire economy class.

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.

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.

I had bad experiences before now was excellent I am glad they have business class again

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

Deplaning was a mess, I sat in business (seats are horrible) and the front door had a problem so we had to deplane from the rear exit. The stairs were not tall enough to reach so there was a large step down from the plane to the top of the stairs.

Staff are the rudest in the industry … awful customer service … will never fly Avianca again

Pros: we leave and arrive on time Cons: the most uncomfortable seats ever. You cant recline at all your seats. No entertainment No TVs flight attendants didn't provide even a glass of water. You have to go to back of the airplane and ask for one. I am Colombian and I remember seeing the flight attendants very neat, elegants which is or was a staple of Avianca.it was one with tennis shoes, no male up, the hair was messy... that was really odd.

Here we have another airline flying to Guatemala but doesn't have a plus or a less, just in the middle. Why? Well, first we don't have even free water Movie selection is poor Seats don't recline in some places Food selection is carb based Forgot to mention, customer service on the web is the worst. Good things; Very reliable on schedule Kind crew

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

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

Information on your arrival and departure airports