IAD - CUZ

$315 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 9/19. 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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Flight 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

Thu, Oct 16 - Thu, Oct 23
Multiple Airlines Logo
5:45 am - 6:14 amIAD-CUZ
25h 29m3 stops
Multiple Airlines Logo
9:57 pm - 2:00 pmCUZ-IAD
15h 03m2 stops
$513Multiple Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 21
Multiple Airlines Logo
5:45 am - 6:35 amIAD-CUZ
25h 50m3 stops
Multiple Airlines Logo
6:57 am - 5:35 amCUZ-IAD
21h 38m2 stops
$516Multiple Airlines
Find Deal
Mon, Oct 27 - Mon, Nov 10
Avianca Logo
3:35 pm - 11:20 amIAD-CUZ
20h 45m1 stop
Avianca Logo
5:10 pm - 1:15 pmCUZ-IAD
20h 05m1 stop
$524Avianca
Find Deal
Tue, Oct 28 - Tue, Nov 11
Avianca Logo
3:35 pm - 11:20 amIAD-CUZ
20h 45m1 stop
Avianca Logo
5:10 pm - 1:15 pmCUZ-IAD
20h 05m1 stop
$525Avianca
Find Deal
Sat, Nov 1 - Mon, Nov 10
Avianca Logo
5:15 pm - 11:20 amIAD-CUZ
19h 05m2 stops
Avianca Logo
5:10 pm - 1:15 pmCUZ-IAD
20h 05m1 stop
$526Avianca
Find Deal
Tue, Oct 28 - Tue, Nov 11
Avianca Logo
5:15 pm - 11:20 amIAD-CUZ
19h 05m2 stops
Avianca Logo
5:10 pm - 1:15 pmCUZ-IAD
20h 05m1 stop
$527Avianca
Find Deal
Thu, Oct 16 - Thu, Oct 23
Multiple Airlines Logo
5:45 am - 6:14 amIAD-CUZ
25h 29m3 stops
Multiple Airlines Logo
4:45 pm - 5:35 amCUZ-IAD
11h 50m1 stop
$536Multiple Airlines
Find Deal
Tue, Oct 28 - Tue, Nov 11
Avianca Logo
5:15 pm - 11:20 amIAD-CUZ
19h 05m2 stops
Avianca Logo
5:10 pm - 3:10 amCUZ-IAD
34h 00m2 stops
$538Avianca
Find Deal
Sun, Nov 2 - Fri, Nov 7
Multiple Airlines Logo
4:15 pm - 8:21 pmIAD-CUZ
28h 06m3 stops
Multiple Airlines Logo
12:25 pm - 4:55 pmCUZ-IAD
28h 30m2 stops
$540Multiple Airlines
Find Deal
Mon, Mar 16 - Mon, Mar 23
Delta Logo
7:59 pm - 9:15 amIAD-CUZ
14h 16m2 stops
Delta Logo
5:00 am - 12:07 amCUZ-IAD
18h 07m2 stops
$645Delta
Find Deal

Everything you should know

Top airlines
Avianca
Cheapest • from $524 (round-trip)
LATAM Airlines
Best reviews • 7.5 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
November
Cheapest • 35% price drop
April
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$513
Typical prices: $524-711
Multiple Airlines
Thu 10/16Thu 10/23
IAD - CUZ • 3 stops
Cheapest one-way
$315
Multiple Airlines
Fri 9/19
IAD - CUZ • 2 stops
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We hope you love your trip to Cusco!
Booking Insights

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 December and June, where the average cost of round-trip tickets is $1,000 and $894 respectively.

Good to know

Low seasonDecember
Cheapest flight$315
Best time to beat the crowds but there is an average 39% increase in price.
Most popular time to fly and prices are also 11% 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 $315 for a one-way ticket and $513 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, SkyTeam, and oneworld 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 $777 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 $636 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 1847 reviews
8.0Crew
6.7Food
7.6Boarding
7.4Comfort
7.0Entertainment
Airline reviews

The flight was late. Please do not delay next time.

6.0 GoodAnonymous, Aug 2025AUS - ATL
Read more LATAM Airlines reviews

The flight was late. Please do not delay next time.

I couldn't travel, now I can't get a refund and to change the date I have to pay an absurd fine.

My biggest complaint is the comfort. I am not tall and there was no legroom. It was very uncomfortable. During my transfer in Sao Paola, the flight was slightly delayed so boarding was confusing because there were no instructions in English.

Horrible the worst airlines I have ever flown. Cancelled flight with no choices and when contacted them they were not helpful

I never got this flight. You sent me to Chile!!! And from Chile I got the other flight to São Paulo... I've arrived 7h latter than I was supposed to arrive because of Delta delays.

Because the flight was late, we lost the connection to Brazil. You, Delta delayed, and you Delta anticipated the door closing in 15 min from Miami to GRU. Why? It caused a lot of stress! I almost could not see my mother in law alive because of your delay.

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.

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

Usb plugs for charging your phone does not work in every flight. uncomfortable chairs even in higher categories.

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.

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.

i think the flight was late because they were so strict about measuring everyone's personal items to try and charge them $119. It was really petty and made us late.

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

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.

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

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