Cheap Flights from Decatur (DEC) to Lille (LIL)

Popular airlines from Decatur, IL (DEC) to Lille (LIL-Lesquin)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key
Flights from Decatur (DEC) to Lille (LIL)
Origin airport
Decatur
Destination airport
Lesquin
Distance
4245 mi

Decatur to Lille Flights

The cheapest times to fly from Decatur to Lille

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

 

The best time to book a flight from Decatur to Lille

Sunday is one of the best days to book for cheap flights from Decatur to Lille: 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 Decatur to Lille

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 Decatur to Lille in 2026. You can also book with separate airlines for your outbound and return journeys, from 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 Decatur to Lille 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 Decatur to Lille 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 is a flight from DEC to Lille Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip flight from DEC to Lesquin Airport (LIL) was . Fares this cheap don't stick around for long, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Decatur Airport (DEC) to Lille-Lesquin Airport?
Most flights can be conveniently canceled online, but whether you are charged a fee depends on your airline. If you do have to cancel your vacation, follow the instructions in the Customer Service Portal.
How do I find cheap flights from Decatur Airport to LIL that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Decatur Airport to Lille-Lesquin Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from DEC to Lesquin Airport (LIL)?
Decatur to Lille is around 4226 mi, so get ready to spend a while in the air. Make sure you pack all the essentials, from your hoodie to your headphones. Toss in some snacks to nibble on throughout your trip too.
Which airlines fly direct from DEC to Lille Airport?
At present, no airlines offer direct flights from Decatur Airport (DEC) to LIL. You'll need to book a flight with one or more stops. To score the best price and connections, lock in your airfare well ahead of time.
Are Decatur Airport (DEC) to Lesquin Airport (LIL) flight tickets cheaper when they're purchased at the last minute?
Flight tickets from Decatur Airport to Lille Airport are available up to 12 months prior to departure on Expedia. And although you may occasionally pick up a fantastic last-minute deal, it's never something you can count on. Also, booking your flights in advance means you'll have more choices — and you can avoid landing the dreaded middle seat! We're always updating our fares to bring you the biggest bargains, so keep checking in for all the latest specials.

Explore a world of travel with Expedia

*Available to One Key members.