$479 Cheap Flights from La Serena (LSC) to Washington (IAD)

View $479 flight on Sat, Mar 28, 2026Opens in a new window

Popular airlines from La Serena (LSC-La Florida) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from La Serena to Washington (LSC-IAD)

Prices were available within the past 7 days and start at $479 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

How much does a flight from La Florida Airport (LSC) to Washington Dulles Intl. Airport (IAD) cost?
Lock in a cheap one-way flight from $479 or cheap return flight from La Florida Airport (LSC) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from La Florida Airport (LSC) to Washington Dulles Intl. Airport (IAD)?
The cheapest month to fly from LSC to IAD is , when there's less demand. Off-peak months are often when airlines offer better prices between these airports.
What is the cheapest airline that flies from La Florida Airport (LSC) to Washington Dulles Intl. Airport (IAD)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest LSC to IAD flight.
How many flights per day from La Florida Airport (LSC) to Washington Dulles Intl. Airport (IAD)?
There are no daily direct flights from La Florida Airport (LSC) to Washington Dulles Intl. Airport (IAD). But you can book flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from LSC to IAD?
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 La Florida Airport (LSC) to Washington Dulles Intl. Airport (IAD)?
Select a flight from La Florida Airport (LSC) to Washington Dulles Intl. Airport (IAD) that leaves before 3 PM to reduce the likelihood of delays. Departures after this hour have a 22% higher chance of being canceled, on average.**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 La Florida Airport (LSC) to Washington Dulles Intl. Airport (IAD) last-minute?
Booking your plane ticket from LSC to IAD shortly before your journey is usually more expensive. But if you're flexible with your travel times and dates, you could score a cheap last-minute fare.
Is it cheaper to book a LSC to IAD flight and hotel package?
Compared with arranging flights and hotels separately, booking a LSC to IAD flight and hotel package with Expedia could lead to significant savings. Better yet, managing everything in one place will take the stress out of travel planning. Just pick your flights and select from our wide range of hotels, then personalize your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from La Florida Airport (LSC) to Washington Dulles Intl. Airport (IAD)?
Typically, you can modify or cancel your LSC to IAD flight. However, there may be additional fees, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you'd like more information, visit our Customer Service portal.

Travel information

Origin airport
La Florida
Destination airport
Washington Dulles Intl.
Distance
4775 mi

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La Serena to Washington Flights

The cheapest times to fly from La Serena to Washington

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

 

The best time to book a flight from La Serena to Washington

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

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 La Serena to Washington in 2026. You can also book with separate airlines for your outbound and return journeys, from $479 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 La Serena to Washington 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 La Serena to Washington 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.

 

La Serena to Washington Flights

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*Available to One Key members.