$270 Cheap Flights from Washington (IAD) to Tacna (TCQ)

View $270 flight on Mon, Dec 1, 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 $270 for one-way flights and $1,089 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

LATAM Airlines Group
Mon, Dec 1 - Wed, Dec 31
IAD
Washington
TCQ
Tacna
$1,089 Roundtrip, found 5 hours ago
$1,089
Roundtrip
found 5 hours ago
Select LATAM Airlines Group flight, departing Mon, Dec 1 from Washington to Tacna, returning Wed, Dec 31, priced at $1,089 found 5 hours ago
LATAM Airlines Group
Mon, Dec 1 - Wed, Dec 31
IAD
Washington
TCQ
Tacna
$1,094 Roundtrip, found 5 hours ago
$1,094
Roundtrip
found 5 hours ago
Select LATAM Airlines Group flight, departing Mon, Dec 1 from Washington to Tacna, returning Wed, Dec 31, priced at $1,094 found 5 hours ago
LATAM Airlines Group
Mon, Dec 1 - Wed, Dec 31
IAD
Washington
TCQ
Tacna
$1,105 Roundtrip, found 5 hours ago
$1,105
Roundtrip
found 5 hours ago
Select LATAM Airlines Group flight, departing Mon, Dec 1 from Washington to Tacna, returning Wed, Dec 31, priced at $1,105 found 5 hours ago
LATAM Airlines Group
Mon, Dec 1 - Wed, Dec 31
IAD
Washington
TCQ
Tacna
$1,110 Roundtrip, found 5 hours ago
$1,110
Roundtrip
found 5 hours ago
Select LATAM Airlines Group flight, departing Mon, Dec 1 from Washington to Tacna, returning Wed, Dec 31, priced at $1,110 found 5 hours ago
Delta
Mon, Dec 1 - Wed, Dec 31
IAD
Washington
TCQ
Tacna
$1,169 Roundtrip, found 5 hours ago
$1,169
Roundtrip
found 5 hours ago
Select Delta flight, departing Mon, Dec 1 from Washington to Tacna, returning Wed, Dec 31, priced at $1,169 found 5 hours ago
LATAM Airlines Group
Mon, Dec 1 - Wed, Dec 31
IAD
Washington
TCQ
Tacna
$1,184 Roundtrip, found 5 hours ago
$1,184
Roundtrip
found 5 hours ago
Select LATAM Airlines Group flight, departing Mon, Dec 1 from Washington to Tacna, returning Wed, Dec 31, priced at $1,184 found 5 hours ago
LATAM Airlines Group
Mon, Dec 1 - Wed, Dec 31
IAD
Washington
TCQ
Tacna
$1,189 Roundtrip, found 5 hours ago
$1,189
Roundtrip
found 5 hours ago
Select LATAM Airlines Group flight, departing Mon, Dec 1 from Washington to Tacna, returning Wed, Dec 31, priced at $1,189 found 5 hours ago
LATAM Airlines Group
Mon, Dec 1 - Wed, Dec 31
IAD
Washington
TCQ
Tacna
$1,200 Roundtrip, found 5 hours ago
$1,200
Roundtrip
found 5 hours ago
Select LATAM Airlines Group flight, departing Mon, Dec 1 from Washington to Tacna, returning Wed, Dec 31, priced at $1,200 found 5 hours ago
LATAM Airlines Group
Mon, Dec 1 - Wed, Dec 31
IAD
Washington
TCQ
Tacna
$1,205 Roundtrip, found 5 hours ago
$1,205
Roundtrip
found 5 hours ago
Select LATAM Airlines Group flight, departing Mon, Dec 1 from Washington to Tacna, returning Wed, Dec 31, priced at $1,205 found 5 hours ago
LATAM Airlines Group
Mon, Dec 1 - Wed, Dec 31
IAD
Washington
TCQ
Tacna
$1,245 Roundtrip, found 5 hours ago
$1,245
Roundtrip
found 5 hours ago
Select LATAM Airlines Group flight, departing Mon, Dec 1 from Washington to Tacna, returning Wed, Dec 31, priced at $1,245 found 5 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
$1,089
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 $270 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?
Get a cheap one-way flight from $270 or cheap return flight from $1,089 from Washington Dulles Intl. Airport (IAD) to Coronel FAP Carlos Ciriani Santa Rosa Intl. Airport (TCQ) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Coronel FAP Carlos Ciriani Santa Rosa Intl. Airport (TCQ)?
Planning your trip for December may help you find better deals, as it's the cheapest month for flights between IAD and TCQ. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Coronel FAP Carlos Ciriani Santa Rosa Intl. Airport (TCQ)?
To find the cheapest airline flying from IAD to TCQ, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
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.