London to Chicago
🇬🇧LHR🇺🇸ORDLondon Heathrow Airport to Chicago O'Hare International AirportUnited Kingdom to United States
Distance
6,344 km
3,942 miles
Frequency
87 departures a week
S26 schedule
Airlines
3
American Airlines, British Airways, United Airlines, codeshares included
Typical delay
18 min
67 departures
The route
Great circle, 6,344 kmHow delayed is this route?
Measured over monthsDepartures from London Heathrow Airport on this route are typically 18 minutes late (likely 16 to 23), across 67 departures we tracked between 2026-03-16 and 2026-06-09.
median delay of tracked departures on this leg. Flight Owl's own resolved departure predictions (flights our users tracked), not a census of all flights at the airport.
Airlines on this route
3 airlines with a flight number here- AAAmerican Airlines
- BABritish Airways
- UAUnited Airlines
Every airline that puts its own flight number on this route. On a busy pair most of them are codeshare partners selling seats on another airline's aircraft, so this is wider than the list of airlines that actually operate it.
Flights on this route
2 of 17 flight numbers tracked often enough to describe| Flight | Airline | Departs | Aircraft | Departures seen |
|---|---|---|---|---|
| UA 958 | United Airlines | 06:00 | not seen yet | 19 |
| AA 87 | American Airlines | 09:45 | not seen yet | 17 |
Departure times are local to London Heathrow Airport. A flight appears here once we have tracked it at least 10 times.