IAD - ASU

$391 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 3/31. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$803
Typical prices: $658-$972
Avianca
Mon 4/20Fri 4/24
IAD - ASU • 2 stops
Cheapest one-way
$391
Multiple Airlines
Tue 3/31
IAD - ASU • 3 stops
When to travel
January
Cheapest • 62% price drop
July
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

Mon, Apr 20 - Fri, Apr 24
Avianca Logo
5:05 pm - 4:40 am
IAD
-
ASU
34h 35m2 stops
Avianca Logo
8:10 am - 2:45 am
ASU
-
IAD
19h 35m2 stops
$803Avianca
Mon, Mar 9 - Mon, Mar 16
Copa Airlines Logo
2:18 am - 12:15 am
IAD
-
ASU
20h 57m1 stop
Copa Airlines Logo
6:42 am - 4:15 am
ASU
-
IAD
22h 33m1 stop
$850Copa Airlines
Mon, Apr 20 - Fri, Apr 24
Avianca Logo
5:05 pm - 4:40 am
IAD
-
ASU
34h 35m2 stops
Avianca Logo
8:10 am - 2:00 pm
ASU
-
IAD
30h 50m1 stop
$852Avianca
Tue, Mar 17 - Sun, Mar 22
Copa Airlines Logo
2:18 am - 12:15 am
IAD
-
ASU
20h 57m1 stop
Copa Airlines Logo
6:42 am - 12:32 am
ASU
-
IAD
18h 50m1 stop
$870Copa Airlines
Thu, Jan 29 - Tue, Feb 10
Avianca Logo
6:15 pm - 5:15 am
IAD
-
ASU
33h 00m2 stops
Avianca Logo
8:20 am - 4:25 am
ASU
-
IAD
22h 05m1 stop
$873Avianca
Thu, Feb 19 - Tue, Mar 3
Avianca Logo
6:15 pm - 5:15 am
IAD
-
ASU
33h 00m2 stops
Avianca Logo
8:20 am - 3:10 am
ASU
-
IAD
20h 50m2 stops
$874Avianca
Tue, Mar 31 - Tue, Apr 7
Multiple Airlines Logo
1:19 pm - 8:55 am
IAD
-
ASU
42h 36m3 stops
Multiple Airlines Logo
8:10 am - 11:51 am
ASU
-
IAD
28h 41m3 stops
$877Multiple Airlines
Wed, Mar 18 - Sun, Mar 22
Multiple Airlines Logo
3:35 pm - 5:15 am
IAD
-
ASU
12h 40m1 stop
Multiple Airlines Logo
6:30 pm - 9:04 pm
ASU
-
IAD
27h 34m2 stops
$879Multiple Airlines
Tue, Mar 17 - Sun, Mar 22
Multiple Airlines Logo
2:18 am - 7:49 am
IAD
-
ASU
52h 31m3 stops
Multiple Airlines Logo
4:05 pm - 12:32 am
ASU
-
IAD
57h 27m3 stops
$880Multiple Airlines
Thu, Jan 29 - Tue, Feb 10
Avianca Logo
6:15 pm - 5:15 am
IAD
-
ASU
33h 00m2 stops
Avianca Logo
8:20 am - 1:40 am
ASU
-
IAD
19h 20m2 stops
$883Avianca
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 April.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Asuncion?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Asuncion clicked on KAYAK for each day over the last 12 months.

When flying from Washington Dulles Airport to Asuncion, you should consider leaving on a Monday and avoid Sundays if you are looking for the best rates. For your return to Washington Dulles Airport, you’ll find the best rates on Saturdays and the most expensive ones on Wednesdays.

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 February and December, where the average cost of round-trip tickets is $1,538 and $1,390 respectively.

Good to know

Low seasonFebruary
Cheapest flight$391
Best time to beat the crowds but there is an average 47% increase in price.
Most popular time to fly and prices are also 1% 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 $391 for a one-way ticket and $803 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 $1,079 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 $883 and an overall rating of 6.6.

  • 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 1557 reviews
6.8Entertainment
7.4Comfort
8.1Crew
7.8Boarding
6.8Food
Airline reviews

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

6.0 GoodZach, Oct 2025
DEN - PTY
Read more Copa Airlines reviews

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.

As always, Copa Airlines is great to fly on. The flights are always on time, the staff are pleasant and helpful and it's always a wonderful flying experience.

Cops Airlines is fantastic! The level of care and professionalism provided by the entire crew was top rate.

the food served was an embarrassment. No connection for charging the cellphone... What a crappy airline.

Great experience with a crew always thinking in the passenger

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

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

I like the crew they're very friendly. I don't like. on five hour flight they not offered snacks. Any drink. Not even coffee

Not even water is offered on the flight. You cannot lean back on the seats and the seats are so narrow you can’t avoid rubbing elbows with the person next to you.

I couldnt recline the seat. Other than that crew was very attentive and helpful. Thsnk you

I had to go to the boarding counter for them to enter my return flight as it’s not with Avianca. There was a long queue as there were lots of people being called to the counter.

This low cost airline looks and fells more like a local bus. In a 6 hour flight not being able to recline a seat is torture. The only thing available with no charge is a glass of water provided by, mostly, rude staff. Our luggage didn’t arrive

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

Boarding, crew were excellent, food was ok and entertainment need to improve

The seats were uncomfortable and barely reclined at all. Very little leg room despite being business class. The crew was friendly and the food was good. Had to use my own phone for in-flight entertainment.

It was horrible. My experience with Avianca. I didn’t know it was Pakistan international Airlines but anyway, whatever it is it is bad horrible you guys need to upgrade everything in those planes. And you guys charge $130 for a carry-on did they wanna let me in with my carry-on that I travel everywhere with the luggage you guys are such a dog thank you

Boarding was excessively slow. They do it by groups in a way that it doesn’t make sense. After business class , ppl that need assistance and any other priority group they should have ppl board from the back to the front. First rows 20+. Then 15+. Then 10, etc. having ppl sitting in the back board last makes no sense. The libe backame long as soon as ppl on rows 10 or so where told to board. The line went all the way up the ramp and tunnel for 25 mins.

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

Information on your arrival and departure airports