IAD - ASU

$297 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 8/30. 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

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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Flights 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

Thu, Aug 21 - Fri, Aug 29
Avianca Logo
3:25 pm - 4:40 amIAD-ASU
12h 15m1 stop
Avianca Logo
8:10 am - 1:15 amASU-IAD
18h 05m2 stops
$629Avianca
Find Deal
Wed, Aug 20 - Fri, Aug 29
Avianca Logo
2:35 am - 4:40 amIAD-ASU
25h 05m3 stops
Avianca Logo
8:10 am - 1:15 amASU-IAD
18h 05m2 stops
$631Avianca
Find Deal
Wed, Sep 10 - Sun, Sep 21
Avianca Logo
5:05 pm - 4:40 amIAD-ASU
34h 35m2 stops
Avianca Logo
8:10 am - 5:35 amASU-IAD
22h 25m1 stop
$656Avianca
Find Deal
Wed, Sep 10 - Sun, Sep 21
 Logo
5:45 am - 12:05 pmIAD-ASU
29h 20m3 stops
 Logo
8:10 am - 2:45 amASU-IAD
19h 35m2 stops
Wed, Sep 10 - Sun, Sep 21
 Logo
5:45 am - 10:05 amIAD-ASU
27h 20m3 stops
 Logo
1:15 pm - 2:00 pmASU-IAD
25h 45m3 stops
Tue, Oct 21 - Mon, Nov 3
Copa Airlines Logo
2:25 am - 11:53 pmIAD-ASU
20h 28m1 stop
Copa Airlines Logo
7:42 am - 3:22 amASU-IAD
21h 40m1 stop
$923Copa Airlines
Find Deal
Wed, Oct 22 - Sun, Nov 2
Copa Airlines Logo
4:34 pm - 5:27 amIAD-ASU
11h 53m1 stop
Copa Airlines Logo
7:42 am - 11:33 pmASU-IAD
17h 51m1 stop
$943Copa Airlines
Find Deal
Wed, Oct 22 - Sun, Nov 2
LATAM Airlines Logo
6:00 am - 10:05 amIAD-ASU
27h 05m2 stops
LATAM Airlines Logo
1:35 pm - 6:42 pmASU-IAD
31h 07m2 stops
$965LATAM Airlines
Find Deal
Wed, Oct 22 - Mon, Nov 3
LATAM Airlines Logo
7:00 am - 10:05 amIAD-ASU
26h 05m2 stops
LATAM Airlines Logo
1:35 pm - 11:50 amASU-IAD
24h 15m2 stops
$975LATAM Airlines
Find Deal
Mon, Jul 14 - Sun, Jul 20
United Airlines Logo
5:55 pm - 11:54 pmIAD-ASU
28h 59m2 stops
United Airlines Logo
1:44 am - 10:18 pmASU-IAD
21h 34m2 stops
$1,547United Airlines
Find Deal
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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.

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 April, where tickets cost $800 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $1,527 and $1,417 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure 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 average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Asuncion, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonFebruary
High seasonOctober
Cheapest flight$297
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly and prices are also 17% 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 $297 for a one-way ticket and $629 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 $1,018 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 $601 and an overall rating of 6.7.

  • 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.

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 1451 reviews
6.8Food
7.8Boarding
6.8Entertainment
7.4Comfort
8.1Crew
Airline reviews

Tell people to remain in their seats during the meal/beverage distribution. Enforce boarding by group numbers. No one was checking. Tell people to turn their electronics speakers off. Bigger cups for drinks.

2.0 MediocrePaul, Jun 2025PTY - MIA
Read more Copa Airlines reviews

Tell people to remain in their seats during the meal/beverage distribution. Enforce boarding by group numbers. No one was checking. Tell people to turn their electronics speakers off. Bigger cups for drinks.

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.

The flight was delayed twice and I could not speak with anyone at the airport about checking in. The phone number to Copa - the customer service agents were polite. They are just limited at helping because they are not at the airport

My flight delayed and i misss the connection they send me to orlando no to tampa i have to pay a uber to my house

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.

I upgraded myself to Business Class at the last minute so I had a DREAMS window seat. Seeing as I've never flown Business before everything was novel and fun for me and it made the 7 hour flight much more enjoyable for sure.

No headphones given for inflight entertainment. I missed my flight from the previous day and the customer service agent tried to extort an additional $100.00 US from me for missing my flight. Really?!

It was reasonably comfortable trip considering its duration (7 hours). Crew was very good and friendly, seats very more comfortable than other planes. Only negative comment would be that the bathroom light did not get its full brightness 🙃

The flight was delayed about 4 hours without any explanation. No wifi or entertainment at all on planes. Had to pay for checked bags I was allowed according to reservations.

Seats are very tight even in Plus, no complimentary snacks or beverage

Late departure. When the flight arrived in Medellin the plane sat at the gate for 20 minutes waiting for a bus for us to get off the plane.

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

Purchased a business class ticket and got a economy seat with center seat blocked they call it business. 3100usd ticket on a flight where economy costs 500usd The biggest scam insult have had on a regular airline. Avianca should be in the low cost category and kicked out of Star Alliance. I want the difference to be credited. Ets see what Avianca does. No reply so far. Avianca = low cost airline. Beware

Excellent flight and one of the smoothest landing I’ve ever experienced

There isn't much space in-between seats and even water needs to be paid for during the flight.

We did not know about the bag fees until check in. They are way too high. It’s insane. We also had a huge delay and everything costed extra which was very annoying.

Lounge for business was closed. Boarding was rush and stand by. Seat for business is just the middle seat blocked and some more leg room.

Flew with our two children. Paid $380 to check two bags (one was overweight). They then left the bags behind on Sunday, December 21st, with all our family’s clothes and family Christmas presents. When we arrived at our destination they told us the bags had not arrived, and they thought (but didn’t know) they were still in Boston, but that there’d be a flight the next day and the bags would arrive the next day. The next day we found out there was no flight, now we’re hoping we get our bags before we fly back out. Meanwhile, trying to get any engagement or accurate information is a waste of time. The folks at the call center are just gatekeepers, who can’t connect with any departments that actually do things to solve a problem. Getting information is made deliberately difficult. My biggest regret is that I’ve had a number of awful experiences with Avianca traveling between the US and Colombia, and still let myself get suckered into buying these tickets because the schedule was great. Never again.

We were not aware carry-on bags cost extra until we arrived at the airport so, we were charged $240.00 for two small carry- on bags! There was a substantial fee for drinks and snacks. No wifi, or other entertainment was available. Waiting areas were crowded and uncomfortable.

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

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