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| Route Information | Details |
|---|---|
| Departure Airport | Chicago O’Hare International Airport (ORD) |
| Arrival Airport | Frankfurt Airport (FRA) |
| Nonstop Duration | Approximately 8 hr 10 min–8 hr 40 min |
| Route Distance | Around 4,355 miles (7,007 km) |
| Current Nonstop Airlines | Lufthansa and United Airlines |
| Usual Arrival Day | The following calendar day |
| Return Flight Duration | Approximately 9 hr 5 min–9 hr 35 min |
The Chicago–Frankfurt route is usually operated as an overnight journey. Travelers board in Chicago during the afternoon or evening, spend the night crossing the Atlantic and reach Frankfurt the next morning.
For example, consider a flight that leaves Chicago at 4:00 PM and spends 8 hours 30 minutes in transit. It would be 12:30 AM in Chicago when the flight ends. After applying the usual seven-hour time difference, the local arrival time in Frankfurt would be approximately 7:30 AM the next day.
This example is only an illustration. The arrival shown on your ticket already reflects Frankfurt local time and accounts for the applicable time-zone difference.
Chicago follows Central Time, while Frankfurt uses Central European Time. Frankfurt is generally seven hours ahead of Chicago. The difference may temporarily become six hours when the United States and Germany change their clocks on different dates.
| Chicago Time | Usual Frankfurt Time |
|---|---|
| 8:00 AM | 3:00 PM |
| 12:00 PM | 7:00 PM |
| 4:00 PM | 11:00 PM |
| 8:00 PM | 3:00 AM the following day |
Departure times are shown in Chicago local time, while arrival times are displayed in Frankfurt local time. The airline has already applied the correct time-zone difference to your itinerary.
Lufthansa Airlines
United airlines
Even flights following the same route do not always take exactly the same amount of time. The schedule includes an estimate based on expected operating conditions, but several factors can affect the journey.
Atlantic Windsc
Eastbound flights often benefit from winds moving across the Atlantic toward Europe. The strength and position of these winds can shorten or lengthen the time spent in the air.
Assigned Flight Path
Air traffic controllers may adjust the route to avoid unsuitable weather, restricted airspace or congestion. The aircraft may therefore travel farther than the direct geographical distance.
O’Hare Ground Traffic
Chicago O’Hare is a large and busy airport. Taxiing to the runway or waiting for a departure slot can add time before takeoff.
Arrival Conditions in Frankfurt
Weather, runway use and traffic levels at Frankfurt Airport may result in holding patterns or a longer taxi after landing.
The Frankfurt-to-Chicago journey commonly takes around 9 hours 5 minutes to 9 hours 35 minutes, which is longer than the eastbound trip.
Westbound aircraft frequently encounter less favorable winds while crossing the Atlantic toward North America. The return flight can therefore take roughly an hour longer even though the distance between Frankfurt and Chicago remains the same.
Unlike the outbound journey, a daytime flight from Frankfurt may reach Chicago later on the same calendar day because travelers move back through several time zones.
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