Airports · 6 min read
Heathrow Connection Times 2026: Terminal Transfers and Real Minimums
Heathrow connection times by terminal: the official 60- and 90-minute minimums, realistic buffers, and when an hour at LHR is not enough.
London (LHR) to Chicago (ORD) flights
Nonstop from London Heathrow to Chicago O'Hare International: distance, flying time, which airlines fly it and how often.
Distance
6,344km
3,942 mi, great circle
Flying time
8h 13m
typical, gate to gate
Flights a day
8
average, November 2026
Airlines
3
passenger airlines
Airlines flying LHR to ORD
Route map
The shortest path over the Earth's surface. Actual tracks vary with winds and airspace. Map © OpenStreetMap contributors.
Cheapest recent fare
Fares found in recent searches load here. You can also compare LHR to ORD fares by month.
Both directions
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Frequently asked questions
How long is the flight from London to Chicago?
About 8h 13m gate to gate for the 6,344 km (3,942 mile) trip, estimated from distance. Schedules vary by airline and season, and winds can add or save time.
Which airlines fly nonstop from LHR to ORD?
American Airlines, British Airways and United Airlines, with about 8 flights a day between them in our data (AeroDataBox, November 2026).