$1,057 Cheap Flights from Lille (LIL) to Washington (IAD)

View $1,057 flight on Wed, Jan 7, 2026Opens in a new window

Popular airlines from Lille (LIL-Lesquin) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from Lille to Washington (LIL-IAD)

Prices were available within the past 7 days and start at $1,057 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 Lesquin Airport (LIL) to Washington Dulles Intl. Airport (IAD) cost?
Grab a cheap one-way flight from $1,057 or cheap return flight from Lesquin Airport (LIL) 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 Lesquin Airport (LIL) to Washington Dulles Intl. Airport (IAD)?
Planning your trip for can help you save, as it's the cheapest month for flights between LIL and IAD. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Lesquin Airport (LIL) to Washington Dulles Intl. Airport (IAD)?
To find the cheapest airline flying from LIL to IAD, 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 discover the cheapest flight right away.
How many flights per day from Lesquin Airport (LIL) to Washington Dulles Intl. Airport (IAD)?
You'll need to book a flight with a layover if you're traveling from Lesquin Airport (LIL) to Washington Dulles Intl. Airport (IAD). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from LIL to IAD?
Typically you'll find the most flight options available on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lesquin Airport (LIL) to Washington Dulles Intl. Airport (IAD)?
Opt for a flight from Lesquin Airport (LIL) to Washington Dulles Intl. Airport (IAD) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this time 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 Lesquin Airport (LIL) to Washington Dulles Intl. Airport (IAD) last-minute?
Waiting until just before your departure to book a ticket from LIL to IAD often results in higher prices. While you might find some last-minute discounts, there's no guarantee. Be flexible with your itinerary for a better chance of scoring a bargain.
Is it cheaper to book a LIL to IAD flight and hotel package?
Securing a LIL to IAD flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Pick from our extensive range of accommodations and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lesquin Airport (LIL) to Washington Dulles Intl. Airport (IAD)?
If you booked your LIL to IAD flight within the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for further details.

Travel information

Origin airport
Lesquin
Destination airport
Washington Dulles Intl.
Distance
3833 mi

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Lille to Washington Flights

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

 

The best time to book a flight from Lille to Washington

Sunday is one of the best days to book for cheap flights from Lille 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 Lille 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 Lille to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $1,057 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 Lille 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 Lille 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.

 

Lille to Washington Flights

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