Cheap Flights from Chicago (ORD) to Liege (LGG)

Popular airlines from Chicago O'Hare Intl. Airport (ORD) to Liege (LGG)

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Frequently asked questions

How much does a flight from O'Hare Intl. Airport (ORD) to Liege Airport (LGG) cost?
Lock in a cheap one-way flight or cheap return flight from O'Hare Intl. Airport (ORD) to Liege Airport (LGG) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from O'Hare Intl. Airport (ORD) to Liege Airport (LGG)?
The cheapest month to fly from ORD to LGG is , when there's less demand. Off-peak season is often when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from O'Hare Intl. Airport (ORD) to Liege Airport (LGG)?
Use the filter tool on Expedia to compare different airlines and find the most affordable carrier that'll take you from ORD to LGG. Then, sort your results by "Price (lowest to highest)" to pick up the best deal available.
How many flights per day from O'Hare Intl. Airport (ORD) to Liege Airport (LGG)?
There aren't any daily direct flights departing from O'Hare Intl. Airport (ORD) to Liege Airport (LGG). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from ORD to LGG?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Just remember that flight schedules can vary based on various factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from O'Hare Intl. Airport (ORD) to Liege Airport (LGG)?
To touch down at Liege Airport (LGG) on schedule, book a flight that leaves from O'Hare Intl. Airport (ORD) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 O'Hare Intl. Airport (ORD) to Liege Airport (LGG) last-minute?
Last-minute bookings from ORD to LGG are generally more expensive. To lock in the best prices, start looking for flights early. That being said, if you're flexible with your travel dates, it's possible to land a cheap fare right before your trip.
Is it cheaper to book an ORD to LGG flight and hotel package?
Compared with arranging flights and hotels separately, booking an ORD to LGG flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one convenient place will take the stress out of travel planning. Just secure your flights and select from our wide range of hotels, then personalize your trip with extras like car rentals and activities.
Can I cancel or change the date of my flight from O'Hare Intl. Airport (ORD) to Liege Airport (LGG)?
It's generally possible to cancel or reschedule your ORD to LGG flight. However, if the booking was made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Travel information

Origin airport
O'Hare Intl.
Destination airport
Liege
Distance
4193 mi

Book with confidence

Book with confidence

Chicago to Liege Flights

The cheapest times to fly from Chicago to Liege

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

 

The best time to book a flight from Chicago to Liege

Sunday is one of the best days to book for cheap flights from Chicago to Liege: 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 Chicago to Liege

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 Chicago to Liege in 2025. 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 Chicago to Liege 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 Chicago to Liege 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.

 

Chicago to Liege Flights

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*Available to One Key members.