$219 Cheap Flights from Washington (IAD) to Cusco (CUZ)

View $219 flight on Fri, Nov 14, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Alejandro Velasco Astete Intl. Airport (CUZ)

Cheap Flights from Washington to Cusco (IAD-CUZ)

Prices were available within the past 7 days and start at $219 for one-way flights and $488 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Mar 4 - Wed, Mar 11
IAD
Washington
CUZ
Cusco
$488 Roundtrip, found 6 days ago
$488
Roundtrip
found 6 days ago
Select United flight, departing Wed, Mar 4 from Washington to Cusco, returning Wed, Mar 11, priced at $488 found 6 days ago
United
Wed, Mar 4 - Wed, Mar 11
IAD
Washington
CUZ
Cusco
$518 Roundtrip, found 6 days ago
$518
Roundtrip
found 6 days ago
Select United flight, departing Wed, Mar 4 from Washington to Cusco, returning Wed, Mar 11, priced at $518 found 6 days ago
United
Wed, Mar 4 - Wed, Mar 11
IAD
Washington
CUZ
Cusco
$523 Roundtrip, found 6 days ago
$523
Roundtrip
found 6 days ago
Select United flight, departing Wed, Mar 4 from Washington to Cusco, returning Wed, Mar 11, priced at $523 found 6 days ago
United
Sun, Mar 29 - Thu, Apr 2
IAD
Washington
CUZ
Cusco
$525 Roundtrip, found 1 day ago
$525
Roundtrip
found 1 day ago
Select United flight, departing Sun, Mar 29 from Washington to Cusco, returning Thu, Apr 2, priced at $525 found 1 day ago
United
Sun, Feb 8 - Thu, Feb 12
IAD
Washington
CUZ
Cusco
$533 Roundtrip, found 6 days ago
$533
Roundtrip
found 6 days ago
Select United flight, departing Sun, Feb 8 from Washington to Cusco, returning Thu, Feb 12, priced at $533 found 6 days ago
United
Sat, Jan 24 - Sat, Feb 7
IAD
Washington
CUZ
Cusco
$550 Roundtrip, found 5 days ago
$550
Roundtrip
found 5 days ago
Select United flight, departing Sat, Jan 24 from Washington to Cusco, returning Sat, Feb 7, priced at $550 found 5 days ago
avianca
Fri, Feb 20 - Thu, Feb 26
IAD
Washington
CUZ
Cusco
$564 Roundtrip, found 1 hour ago
$564
Roundtrip
found 1 hour ago
Select avianca flight, departing Fri, Feb 20 from Washington to Cusco, returning Thu, Feb 26, priced at $564 found 1 hour ago
Aeromexico
Thu, Feb 5 - Mon, Feb 16
IAD
Washington
CUZ
Cusco
$634 Roundtrip, found 6 days ago
$634
Roundtrip
found 6 days ago
Select Aeromexico flight, departing Thu, Feb 5 from Washington to Cusco, returning Mon, Feb 16, priced at $634 found 6 days ago
Delta
Sun, Jan 18 - Wed, Jan 21
IAD
Washington
CUZ
Cusco
$645 Roundtrip, found 3 hours ago
$645
Roundtrip
found 3 hours ago
Select Delta flight, departing Sun, Jan 18 from Washington to Cusco, returning Wed, Jan 21, priced at $645 found 3 hours ago
LATAM Airlines Group
Sat, Jan 17 - Wed, Jan 21
IAD
Washington
CUZ
Cusco
$675 Roundtrip, found 3 hours ago
$675
Roundtrip
found 3 hours ago
Select LATAM Airlines Group flight, departing Sat, Jan 17 from Washington to Cusco, returning Wed, Jan 21, priced at $675 found 3 hours ago

Find the cheapest month to fly from Washington (IAD) to Cusco (CUZ)

March is typically the cheapest month to fly

From $451 - $743 per traveler.

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Alejandro Velasco Astete Intl. Airport (CUZ) cost?
Grab a cheap one-way flight from $219 or cheap return flight from $488 from Washington Dulles Intl. Airport (IAD) to Alejandro Velasco Astete Intl. Airport (CUZ) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Alejandro Velasco Astete Intl. Airport (CUZ)?
The cheapest month to fly from IAD to CUZ is March, when there's less demand. Off-peak season is typically when better flight deals are available between these airports.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Alejandro Velasco Astete Intl. Airport (CUZ)?
To find the cheapest airline flying from IAD to CUZ, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Alejandro Velasco Astete Intl. Airport (CUZ)?
You'll have to book a flight with a layover when traveling from Washington Dulles Intl. Airport (IAD) to Alejandro Velasco Astete Intl. Airport (CUZ). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from IAD to CUZ?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary based on a range of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Alejandro Velasco Astete Intl. Airport (CUZ)?
To avoid possible delays on the Washington Dulles Intl. Airport (IAD) to Alejandro Velasco Astete Intl. Airport (CUZ) route, travel before 3 PM. Departures after this hour are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Alejandro Velasco Astete Intl. Airport (CUZ) last-minute?
Waiting until right before your break to book a ticket from IAD to CUZ often results in higher prices. Although you may find some last-minute deals, they're not always guaranteed. Allow some flexibility in your schedule to boost your chances of landing a bargain.
Is it cheaper to book an IAD to CUZ flight and hotel package?
You'll typically save money by securing an IAD to CUZ flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one place. After selecting your preferred accommodations and flights, you can add extras such as tours, activities and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Alejandro Velasco Astete Intl. Airport (CUZ)?
It's usually possible to reschedule or cancel your IAD to CUZ flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Alejandro Velasco Astete Intl.
Airlines serving
Aeromexico, Delta, LATAM Airlines Group, avianca
Roundtrip price
$487
Distance
3644 mi

Book with confidence

Book with confidence

Washington to Cusco Flights

The cheapest times to fly from Washington to Cusco

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Cusco are during the month of March. You can find some of the cheapest flights from Washington to Cusco with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Cusco

Sunday is one of the best days to book for cheap flights from Washington to Cusco: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Cusco

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Cusco in 2025. You can also book with separate airlines for your outbound and return journeys, from $219 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Cusco flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Cusco airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Washington to Cusco Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to One Key members.