$923 Cheap Flights from Washington (IAD) to Tacna (TCQ)

View $923 flight on Wed, Dec 17, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Tacna (TCQ-Coronel FAP Carlos Ciriani Santa Rosa Intl.)

Cheap Flights from Washington to Tacna (IAD-TCQ)

Prices were available within the past 7 days and start at $923 for one-way flights and $1,650 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

LATAM Airlines Group
Wed, Dec 17 - Sat, Dec 27
IAD
Washington
TCQ
Tacna
$1,650 Roundtrip, found 14 hours ago
$1,650
Roundtrip
found 14 hours ago
Select LATAM Airlines Group flight, departing Wed, Dec 17 from Washington to Tacna, returning Sat, Dec 27, priced at $1,650 found 14 hours ago
Air Canada
Wed, Dec 17 - Sat, Dec 27
IAD
Washington
TCQ
Tacna
$1,841 Roundtrip, found 14 hours ago
$1,841
Roundtrip
found 14 hours ago
Select Air Canada flight, departing Wed, Dec 17 from Washington to Tacna, returning Sat, Dec 27, priced at $1,841 found 14 hours ago
LATAM Airlines Group
Wed, Dec 17 - Sat, Dec 27
IAD
Washington
TCQ
Tacna
$1,981 Roundtrip, found 14 hours ago
$1,981
Roundtrip
found 14 hours ago
Select LATAM Airlines Group flight, departing Wed, Dec 17 from Washington to Tacna, returning Sat, Dec 27, priced at $1,981 found 14 hours ago
LATAM Airlines Group
Wed, Dec 17 - Sat, Dec 27
IAD
Washington
TCQ
Tacna
$2,000 Roundtrip, found 14 hours ago
$2,000
Roundtrip
found 14 hours ago
Select LATAM Airlines Group flight, departing Wed, Dec 17 from Washington to Tacna, returning Sat, Dec 27, priced at $2,000 found 14 hours ago
LATAM Airlines Group
Wed, Dec 17 - Sat, Dec 27
IAD
Washington
TCQ
Tacna
$2,072 Roundtrip, found 14 hours ago
$2,072
Roundtrip
found 14 hours ago
Select LATAM Airlines Group flight, departing Wed, Dec 17 from Washington to Tacna, returning Sat, Dec 27, priced at $2,072 found 14 hours ago
LATAM Airlines Group
Wed, Dec 17 - Sat, Dec 27
IAD
Washington
TCQ
Tacna
$2,091 Roundtrip, found 14 hours ago
$2,091
Roundtrip
found 14 hours ago
Select LATAM Airlines Group flight, departing Wed, Dec 17 from Washington to Tacna, returning Sat, Dec 27, priced at $2,091 found 14 hours ago
LATAM Airlines Group
Wed, Dec 17 - Sat, Dec 27
IAD
Washington
TCQ
Tacna
$3,036 Roundtrip, found 14 hours ago
$3,036
Roundtrip
found 14 hours ago
Select LATAM Airlines Group flight, departing Wed, Dec 17 from Washington to Tacna, returning Sat, Dec 27, priced at $3,036 found 14 hours ago
Air Canada
Wed, Dec 17 - Sat, Dec 27
IAD
Washington
TCQ
Tacna
$3,265 Roundtrip, found 14 hours ago
$3,265
Roundtrip
found 14 hours ago
Select Air Canada flight, departing Wed, Dec 17 from Washington to Tacna, returning Sat, Dec 27, priced at $3,265 found 14 hours ago
Air Canada
Wed, Dec 17 - Sat, Dec 27
IAD
Washington
TCQ
Tacna
$3,287 Roundtrip, found 14 hours ago
$3,287
Roundtrip
found 14 hours ago
Select Air Canada flight, departing Wed, Dec 17 from Washington to Tacna, returning Sat, Dec 27, priced at $3,287 found 14 hours ago
Flights from Washington (IAD) to Tacna (TCQ)
Origin airport
Washington Dulles Intl.
Destination airport
Coronel FAP Carlos Ciriani Santa Rosa Intl.
Airlines serving
LATAM Airlines Group
Roundtrip price
$1,650
Distance
3965 mi

Washington to Tacna Flights

The cheapest times to fly from Washington to Tacna

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 Tacna are during the month of December. You can find some of the cheapest flights from Washington to Tacna with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Tacna

Sunday is one of the best days to book for cheap flights from Washington to Tacna: 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 Tacna

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 Tacna in 2025. You can also book with separate airlines for your outbound and return journeys, from $923 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 Tacna 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 Tacna 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.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Coronel FAP Carlos Ciriani Santa Rosa Intl. Airport (TCQ) cost?
Discover the latest flight deals from IAD to TCQ by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from IAD to TCQ?
The cheapest flights from IAD to TCQ are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from IAD to TCQ?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from IAD to TCQ. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Coronel FAP Carlos Ciriani Santa Rosa Intl. Airport (TCQ)?
You'll have to book a flight with a layover if you're traveling from Washington Dulles Intl. Airport (IAD) to Coronel FAP Carlos Ciriani Santa Rosa Intl. Airport (TCQ). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find the best option for your trip.
What day of the week has the most flights from IAD to TCQ?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*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 Coronel FAP Carlos Ciriani Santa Rosa Intl. Airport (TCQ)?
To reach Coronel FAP Carlos Ciriani Santa Rosa Intl. Airport (TCQ) without delays, pick a flight that leaves Washington Dulles Intl. Airport (IAD) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Coronel FAP Carlos Ciriani Santa Rosa Intl. Airport (TCQ) last-minute?
Booking your ticket from IAD to TCQ right before your journey is typically more expensive. However, if there's some wiggle room with your schedule, you could grab a cheap last-minute fare.
Is it cheaper to book an IAD to TCQ flight and hotel package?
Compared with arranging flights and hotels separately, booking an IAD to TCQ flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one place takes the hassle out of planning your trip. Simply secure your flights and select from our extensive range of hotels, then customize your trip with extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Coronel FAP Carlos Ciriani Santa Rosa Intl. Airport (TCQ)?
It's usually possible to reschedule or cancel your IAD to TCQ flight. However, for bookings made more than 24 hours ago, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.