Flights London → Chicago
LHR → ORD
How long is the flight from London to Chicago?
The flight from London (LHR) to Chicago (ORD) takes 7h 38m on average. That is the median time recorded across 1 scheduled flight on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
Route overview
This flight route connects London to Chicago, operating with a fleet that includes Boeing 767-300, Boeing 777, Boeing 747-400, and Airbus A340-340 aircraft. With an on-time performance rate of 82%, the average delay is approximately 5.6 minutes across the eleven flights recorded for this route.
The London (LHR) → Chicago (ORD) route is operated by American Airlines, British Airways, Delta Air Lines, Iberia Airlines, Lufthansa Cargo, United Airlines. Across 25 flights monitored in recent months, 87% arrived on time (within 15 min of schedule), with an average delay of 6 minutes. The cancellation rate is 0.00%. FlightGuard's average computed risk is 9.5/100 (low), updated in real time from weather, ATC delays, strikes, NOTAMs, fuel and flight history. At Chicago the average ATFM delay is 5.5 minutes (main cause: atfm). Departing from London the average ATFM delay is 1.8 minutes.
Heading to Chicago: what to expect in this direction
Flying from London (LHR) to Chicago (ORD) heads north-west for about 6,344 km, a flight time of roughly 7h 38m.
Departures from London on this leg cluster in the morning window: about 88% of LHR-ORD flights take off then.
Air-traffic congestion: departing London the average ATFM delay is 1.8 min (atfm); arriving into Chicago it is 5.5 min (atfm).
Across 25 tracked LHR-ORD flights, 87% left on time with an average delay of 6 min and a 0.0% cancellation rate.
Route facts
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Airline punctuality on this route
| Airline | On-time | Average delay | Cancellations |
|---|---|---|---|
| Iberia Airlines (IB) | 87% | 20 min | 1.2% |
| Delta Air Lines (DL) | 85% | 1 min | 0.8% |
| United Airlines (UA) | 83% | 5 min | 1.3% |
| American Airlines (AA) | 79% | 6 min | 1.1% |
| Lufthansa Cargo (LH) | 74% | 21 min | 0.0% |
| British Airways (BA) | 66% | 31 min | 1.3% |
Airlines operating LHR-ORD
Airports
Frequently asked questions about LHR-ORD
The flight from London (LHR) to Chicago (ORD) takes 7h 38m on average. That is the median time recorded across 1 scheduled flight on this leg; the actual time varies by a few minutes with wind, routing and take-off queues.
On the London (LHR) -> Chicago (ORD) route, on-time performance is 87% with an average delay of 6 minutes, based on 25 tracked flights.
The cancellation rate on London-Chicago is 0.00% across 25 monitored flights.
The route is operated by 6 airlines: American Airlines, British Airways, Delta Air Lines, Iberia Airlines, Lufthansa Cargo, United Airlines.
Enter your flight number on FlightGuard for a real-time analysis based on 9 factors: weather at Chicago, ATC delays, strikes, NOTAMs, fuel, airline punctuality and recent trends.
The London-Chicago route is about 6,344 km: for a cancellation (with less than 14 days' notice), a delay over 3 hours, or denied boarding, UK261 compensation is £520, barring extraordinary circumstances.
