IAD - CUZ

$204 Find Cheap Flights from Washington Dulles Airport to Cusco

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 Cusco departing on 8/13. 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 Cusco

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Cusco, 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 Cusco, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Dulles Intl to Cusco (IAD-CUZ)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Cusco 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 Cusco

Fri, Sep 12 - Sat, Sep 20
 Logo
7:00 am - 9:04 pmIAD-CUZ
15h 04m2 stops
 Logo
6:57 am - 5:35 amCUZ-IAD
21h 38m2 stops
Wed, Oct 8 - Wed, Oct 15
 Logo
7:00 am - 6:24 amIAD-CUZ
24h 24m2 stops
 Logo
8:02 am - 2:00 pmCUZ-IAD
28h 58m2 stops
Mon, Sep 15 - Sat, Sep 27
 Logo
5:45 am - 9:49 pmIAD-CUZ
17h 04m3 stops
 Logo
6:57 am - 5:35 amCUZ-IAD
21h 38m2 stops
Sun, Sep 14 - Fri, Sep 19
 Logo
4:05 am - 6:24 amIAD-CUZ
27h 19m3 stops
 Logo
6:47 am - 3:45 pmCUZ-IAD
31h 58m3 stops
Mon, Nov 10 - Wed, Nov 19
Delta Logo
12:35 pm - 10:25 amIAD-CUZ
21h 50m2 stops
Delta Logo
5:00 am - 11:17 pmCUZ-IAD
18h 17m2 stops
$535Delta
Find Deal
Sat, Sep 13 - Sun, Sep 21
Avianca Logo
5:05 pm - 11:00 amIAD-CUZ
18h 55m2 stops
Avianca Logo
12:15 pm - 5:35 amCUZ-IAD
16h 20m1 stop
$552Avianca
Find Deal
Fri, Oct 24 - Tue, Oct 28
Avianca Logo
3:25 pm - 11:00 amIAD-CUZ
20h 35m1 stop
Avianca Logo
5:00 pm - 5:50 amCUZ-IAD
11h 50m1 stop
$553Avianca
Find Deal
Tue, Nov 4 - Wed, Nov 19
LATAM Airlines Logo
3:00 pm - 9:25 amIAD-CUZ
18h 25m2 stops
LATAM Airlines Logo
8:15 pm - 11:50 amCUZ-IAD
15h 35m2 stops
$575LATAM Airlines
Find Deal
Sun, Nov 9 - Tue, Nov 11
LATAM Airlines Logo
5:10 pm - 5:55 pmIAD-CUZ
24h 45m2 stops
LATAM Airlines Logo
12:05 am - 11:17 pmCUZ-IAD
23h 12m2 stops
$586LATAM Airlines
Find Deal
Thu, Sep 18 - Thu, Sep 25
Delta Logo
7:22 pm - 9:00 amIAD-CUZ
14h 38m2 stops
Delta Logo
7:35 am - 12:13 amCUZ-IAD
15h 38m2 stops
$625Delta
Find Deal
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KAYAK's insights & trends for Dulles Intl to Cusco flights

Get data-powered insights and trends into flights from Dulles Intl to Cusco 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 Cusco?

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

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 Cusco, 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 Cusco is November, where tickets cost $467 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is $1,021 and $1,000 respectively.

Good to know

Low seasonDecember
High seasonApril
Cheapest flight$204
Best time to beat the crowds but there is an average 37% increase in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Washington Dulles Airport to Cusco

When to book flights from Dulles Intl to Cusco

Are your dates flexible? Find out the best times to travel from Dulles Intl to Cusco 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 Cusco flights

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

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Cusco was $204 for a one-way ticket and $445 for a round-trip.

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

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington Dulles Airport and on arrival in Cusco.

  • Which airports will I be using when flying from Washington Dulles Airport to Cusco?

    Washington Dulles Airport airport is called Washington, D.C. Dulles Intl and the only airport in Cusco is Cusco Velazco Astete.

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

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

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

    Star Alliance, and SkyTeam are the airline alliances operating flights between Washington Dulles Airport and Cusco, with SkyTeam being the most commonly used for this route.

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

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Cusco are LATAM Airlines and Avianca. With an average price for the route of $763 and an overall rating of 7.5, LATAM Airlines is the most popular choice. Avianca is also a great choice for the route, with an average price of $632 and an overall rating of 6.7.

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

    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 Cusco.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Cusco 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 Cusco?

    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 Cusco with an airline and back to Washington Dulles Airport with another airline. Booking your flights between Washington Dulles Airport and CUZ 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 Cusco?

    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 Cusco 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 Cusco

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Cusco. 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 Cusco? 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
LATAM AirlinesOverall score based on 1801 reviews
7.4Comfort
7.0Entertainment
7.6Boarding
8.1Crew
6.7Food
Airline reviews

Boarding was done by woman who insisted on strict standing in line policy; food was ok; entertainment minimal

6.0 GoodDiane, Jul 2025ATL - PDX
Read more LATAM Airlines reviews

Boarding was done by woman who insisted on strict standing in line policy; food was ok; entertainment minimal

Wider seats, better seat cushions, (I felt like there was a board I was sitting on). I had the chicken to eat but It neither tasted nor looked like chicken. The fruit was good.

I was in the last row and they sent me to check in my luggage last minute after boarding. I had to go through the crowd.

Our flight was cancelled and it took them 5 hours to reschedule and the next morning they said we still didn’t have a new ticket.

We didn’t have any entertainment. I tried to go online without success. The airplane was extremely cold and they didn’t have blankets.

It was good, however the airplane was really cold. We received snacks and the crew was friendly.

Delta has an outstanding service. They are courteous and punctual most of the time. The flight departed a half hour late but we arrived 15 minutes early.

Change of gate in Santiago devolved into half plus hour delay and a really tight connection in Lima

Although the flight is goof and the crew is good, the way the airline charges you for every service is ridiculous.

They didi not provide wheelchair though we had requested. We had to run around for 40 minutes and arrange it from the airport!

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.

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

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

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.

So so, you feel like you have to pay for everything each time

COP 7,000 for a cup of mediocre coffee. I thought I was on Spirit Airlines for a minute. Otherwise the flight was fine. Nothing exceptional to report.

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

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