Flights from Chicago to Liège start at €647.37 and take 12h 22m at their fastest.
The Flights from Chicago to Liège starts at €647.37 and takes 12h 22m door to door, run by 5 operators over 6,953 km, with around 24 departures a day. Fares bottom out about 45 days before departure.
Two journeys we can sell today, with the service number each operator files them under.
Changes at Dublin, with 58 minutes between services and a walk of about 5 minutes.
Door to door 13h 54mCO2 1117.0 kgChanges 1Fixed, no changes
Door to door 12h 22mCO2 1029.0 kgChanges 0Fixed, no changes
Changes at Brussels, with 87 minutes between services and a walk of about 14 minutes.
Door to door 14h 4mCO2 1019.2 kgChanges 1Fixed, no changes
Speed, flexibility and what is on board. Nothing here is a rating, because we have not earned one.
| Operator | From | Fastest |
|---|---|---|
 Icelandair | €566.54 | 12h 17m |
 Qatar Airways | €604.89 | 12h 17m |
 ASL Airlines Belgium | €580.11 | 12h 17m |
 Emirates | €570.08 | 12h 18m |
 Turkish Airlines | €552.97 | 12h 18m |
Liège sits on the water, which usually settles which side of town you want to wake up on. Rooms are not ours to sell.
Sort by distance from Liège-Guillemins and you can see which places are ten minutes on foot and which are not.
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Partner links. We do not sell accommodation. We earn a commission when a booking completes, and it never changes what you pay.
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
Median cheapest fare for each weekday, taken across the next three weeks of real prices.
The stations, airports and ports each mode on this corridor actually uses.
Direct or connecting, how far the route really runs, and what happens when a connection is missed.
The questions people actually ask about this trip, answered from the same prices and times the page above is built on rather than written once and left to go stale.
The Flight from Chicago to Liège takes 12h 22m door to door, of which 9h 12m is spent moving. The route runs 6,953 km. The difference between the two times is reaching the terminal and leaving it at the far end, which every time on this page includes.
The Flight from Chicago to Liège starts at €647.37 for one passenger, checked on September 28, 2026. A typical fare is €650.91. Both are the total including taxes, supplier fees and our service fee, so the price here is the price at checkout.
5 operators run the Flight from Chicago to Liège: Icelandair, Qatar Airways, ASL Airlines Belgium, Emirates, Turkish Airlines. Between them they file around 24 departures a day. The operator table on this page compares them on fare, journey time, cruising speed, fare conditions and what is provided on board.
The Flight from Chicago to Liège leaves from Chicago MDW and arrives at Liège LGG. Allow about 3h 10m for reaching the departure terminal and leaving the arrival one. That time is already inside every door to door figure quoted on this page.
Fares for the Flight from Chicago to Liège bottom out around 45 days ahead, at €436.15. The gap between the cheapest and most expensive lead time across the window is 197 percent, measured on September 28, 2026. Booking inside the final week has consistently cost more.
The Flight from Chicago to Liège produces about 1029.0 kg of CO2 per passenger over 6953 km, which works out at roughly 148 grams per passenger kilometer. That figure is for the whole journey and for one traveler, not for the vehicle.
Observed service A carrier record shows this named operator serving this named pair, and we carry that through unchanged.
Schedules, seat counts and fares are generated by our own model until the supplier contracts are signed. Places, coordinates, operators, which operator serves which pair, and every distance are real. We would rather say that on every page than let a modeled number pass for a filed one.
Defined in full at Door to door, Fares, The booking window, Carbon
Landing at LGG after the trains have stopped is the case this solves. We do not run cars.
A price agreed before you fly, a driver at arrivals, and a car big enough for the bags.
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Partner links. We do not operate transfers. We earn a commission on a booking, and the fare is the same as going direct.