$543 Cheap Flights from Seattle (SEA) to Cusco (CUZ)

Seattle (SEA) to Cusco (CUZ) at a glance

Embark on an exciting journey from Seattle (SEA) to Cusco (CUZ) with a range of airlines available on this long-haul international route. Explore various options from full-service carriers to discover the itinerary that aligns with your budget, schedule, and travel preferences as you prepare to experience Cusco's iconic landmarks and vibrant neighborhoods. Here, you'll find essential information for flights departing from Seattle-Tacoma International Airport (SEA) to Alejandro Velasco Astete International Airport (CUZ).

• Fastest flight duration: around 13 hours in-flight, plus roughly 6 hours total layover with two or more stops
• Route distance: roughly 5,200 miles (8,370 km)
• Flights per week: around 8 departures on average
• Typical fares (one-way): economy tickets often range from $400–$905, depending on seasonality and how far ahead you book

Flights from Seattle - Tacoma International Airport (SEA) to Alejandro Velasco Astete International Airport (CUZ)

According to recent traveler bookings, the top airlines flying from Seattle to Cusco are often chosen for their multi-stop services, featuring popular layovers at Jorge Chávez International Airport (LIM) with an approximately 2h 30m layover, Los Angeles International Airport (LAX) with about a 2h 45m layover, and Hartsfield-Jackson Atlanta International Airport (ATL) with a 1h 45m layover. These options allow you to mix and match price, total travel time, and cabin class to create the ideal itinerary.

• Delta: This full-service airline provides multi-stop options, with one-way ticket prices generally between $540 and $910. Delta represents around 45% of the departures on this route, featuring an in-flight duration of 13 hours and a total travel time of approximately 18 hours and 30 minutes, including layovers.
• LATAM Airlines Group: As a full-service carrier, LATAM offers multi-stop flights with one-way fares usually falling between $600 and $915. It accounts for about 33% of the departures on this route, with an in-flight time of 13 hours and an overall journey duration of roughly 18 hours and 30 minutes, factoring in layovers.
• Avianca: This full-service airline also provides multi-stop services, with one-way prices typically ranging from $400 to $785. Avianca makes up around 20% of the departures for this route, offering a flight time of 13 hours and an estimated total travel time of about 18 hours and 30 minutes, including layovers.

How to find the best prices for flights from Seattle (SEA) to Cusco (CUZ)

Getting some of the best deals on flights from Seattle to Cusco is all about timing and flexibility. Here are some key tips to help you save:

1. Best times to book and fly: cheaper fares are usually found when booking at least two months in advance, which coincides with when most travelers make their reservations. Departures in the afternoon, between 12 PM and 6 PM, not only offer lower prices but are also the most favored flight times. Additionally, flying on Sunday provides both affordability and popularity as a travel day.
2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.* Find Cusco hotel and flight deals.
4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Alejandro Velasco Astete International Airport from Seattle - Tacoma International Airport

Cusco welcomes travelers from Seattle with a range of transport options based on price, convenience, and proximity. For departures, Seattle - Tacoma International Airport is roughly a 20-minute drive (covering about 14 miles) from central Seattle. Here's how to reach Cusco efficiently:

• Hotel transfer: Transfers offer a convenient way to reach your hotel in Cusco, with options including free hotel shuttles and private rides, which can be arranged in advance with your hotel.
• Car rental: Renting a car from Alejandro Velasco Astete International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Alejandro Velasco Astete International Airport on Expedia.
• Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
• Public transportation: From Alejandro Velasco Astete International Airport, Cusco Bus Station (a bus station) is located about 1.6 miles away by car, while Cusco Wanchaq Station (a train station) is approximately 2.5 miles away by car. For those looking to travel by sea, Cusco Seaport (a seaport) is situated about 3.2 miles from the airport, also accessible by car.

Seattle to Cusco Flights

The cheapest times to fly from Seattle 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 Seattle to Cusco are during the month of May. You can find some of the cheapest flights from Seattle to Cusco with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Seattle to Cusco

Sunday is one of the best days to book for cheap flights from Seattle 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 Seattle 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 Seattle to Cusco in 2026. You can also book with separate airlines for your outbound and return journeys, from $543 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 Seattle 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 Seattle 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.