$264 Cheap Flights from Washington (IAD) to Cusco (CUZ)

View $264 flight on Tue, Oct 27, 2026Opens in a new window

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

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Cheap Flights from Washington to Cusco (IAD-CUZ)

Prices were available within the past 7 days and start at $264 for one-way flights and $542 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Nov 10 - Mon, Nov 16
IAD
Washington
CUZ
Cusco
$542 Roundtrip, found 14 hours ago
$542
Roundtrip
found 14 hours ago
Select United flight, departing Tue, Nov 10 from Washington to Cusco, returning Mon, Nov 16, priced at $542 found 14 hours ago
United
Tue, Oct 27 - Mon, Nov 2
IAD
Washington
CUZ
Cusco
$543 Roundtrip, found 14 hours ago
$543
Roundtrip
found 14 hours ago
Select United flight, departing Tue, Oct 27 from Washington to Cusco, returning Mon, Nov 2, priced at $543 found 14 hours ago
United
Mon, Apr 13 - Sat, Apr 18
IAD
Washington
CUZ
Cusco
$561 Roundtrip, found 3 days ago
$561
Roundtrip
found 3 days ago
Select United flight, departing Mon, Apr 13 from Washington to Cusco, returning Sat, Apr 18, priced at $561 found 3 days ago
Delta
Tue, May 5 - Tue, May 12
IAD
Washington
CUZ
Cusco
$569 Roundtrip, just found
$569
Roundtrip
just found
Select Delta flight, departing Tue, May 5 from Washington to Cusco, returning Tue, May 12, priced at $569 just found
United
Tue, Nov 10 - Sun, Nov 15
IAD
Washington
CUZ
Cusco
$575 Roundtrip, found 3 days ago
$575
Roundtrip
found 3 days ago
Select United flight, departing Tue, Nov 10 from Washington to Cusco, returning Sun, Nov 15, priced at $575 found 3 days ago
LATAM Airlines Group
Tue, May 5 - Tue, May 12
IAD
Washington
CUZ
Cusco
$584 Roundtrip, just found
$584
Roundtrip
just found
Select LATAM Airlines Group flight, departing Tue, May 5 from Washington to Cusco, returning Tue, May 12, priced at $584 just found
Delta
Tue, May 5 - Wed, May 13
IAD
Washington
CUZ
Cusco
$587 Roundtrip, just found
$587
Roundtrip
just found
Select Delta flight, departing Tue, May 5 from Washington to Cusco, returning Wed, May 13, priced at $587 just found
avianca
Tue, May 5 - Tue, May 12
IAD
Washington
CUZ
Cusco
$595 Roundtrip, just found
$595
Roundtrip
just found
Select avianca flight, departing Tue, May 5 from Washington to Cusco, returning Tue, May 12, priced at $595 just found
LATAM Airlines Group
Mon, Apr 13 - Fri, Apr 17
IAD
Washington
CUZ
Cusco
$597 Roundtrip, found 2 hours ago
$597
Roundtrip
found 2 hours ago
Select LATAM Airlines Group flight, departing Mon, Apr 13 from Washington to Cusco, returning Fri, Apr 17, priced at $597 found 2 hours ago
Air Canada
Sun, Nov 1 - Thu, Nov 12
IAD
Washington
CUZ
Cusco
$629 Roundtrip, found 5 days ago
$629
Roundtrip
found 5 days ago
Select Air Canada flight, departing Sun, Nov 1 from Washington to Cusco, returning Thu, Nov 12, priced at $629 found 5 days ago

Alternative airports near Cusco

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Alejandro Velasco Astete Intl. CUZ. Cheapest and Closest option available. Average driving time to city center is 4 minutes. Flights from $700
CUZ
Alejandro Velasco Astete Intl.
CheapestClosest
Average driving time to city center4 min
Flights from $700

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

February is typically the cheapest month to fly

From $453 - $733 per traveler.

Frequently asked questions

How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.) cost?
You can find cheap one-way flights from $264 and cheap return flights from $542 Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.) with Expedia. One-way flights usually range from $310 to $1383, and return flights typically cost between $683 and $2810. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.)?
The cheapest month to fly from IAD to CUZ is November when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.)?
Enter IAD to CUZ and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.)?
Avianca is one of the cheapest airlines offering connecting flights from Washington Dulles Intl. (IAD) to Alejandro Velasco Astete Intl. (CUZ) with return tickets starting from around $563. This flight has a layover in El Salvador Intl. (SAL). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.)?
To find a cheap flight from Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.)?
The earliest flight from Washington Dulles International Airport (IAD) to Alejandro Velasco Astete International Airport (CUZ) usually departs at around 1:30 AM local time, operated by Avianca. This is a seasonal service active in December, giving you a head start on your adventure in Cusco. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.)?
The most popular departure times for flights from Washington Dulles Intl. (IAD) to Alejandro Velasco Astete Intl. (CUZ) are from 3pm to 6pm. About 26% of passengers prefer this time window. Many major carriers, including Delta Air Lines, LATAM Airlines and United Airlines, offer flights during this window. This timing is favored because it allows travelers to finish their day in Washington before heading to Cusco.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.)?
Flying from IAD to CUZ with a connection usually takes about 20 hours 50 minutes, traveling roughly 3,644 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.)?
Business class seats are offered on the IAD to CUZ route with Avianca and United Airlines.
How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Cusco from Washington Dulles Intl. (IAD)?
From Washington Dulles Intl. (IAD), you can fly into Alejandro Velasco Astete Intl. (CUZ) to reach Cusco. Some flights may connect through major hubs like Hartsfield-Jackson Atlanta Intl. (ATL), John F. Kennedy Intl. (JFK), El Salvador Intl. (SAL) before reaching Cusco. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.) flight and hotel package?
Securing a Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.) Cusco Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.)?
If you booked your Washington, DC (IAD-Washington Dulles Intl.) to Cusco (CUZ-Alejandro Velasco Astete Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Alejandro Velasco Astete Intl.
Airlines serving
Delta, LATAM Airlines Group, avianca
Roundtrip price
$542
Distance
3644 mi

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 November. 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 2026. You can also book with separate airlines for your outbound and return journeys, from $264 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

*Flight schedules are subject to change.

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*Available to One Key members.