LHR to ORD: distance bands, operating airlines, connection choices and disruption evidence for this direction of travel.
Examples, not a daily timetable. Confirm the operating airline, airports and stops on your booking.
The great-circle distance between LHR and ORD is approximately 6,345 km, in the over 3,500 km band. This endpoint calculation does not add detours. For a through connection, check the original departure and last ticketed destination before selecting a compensation band.
ORD is Chicago O'Hare; Midway is MDW. A cancellation offer to Midway therefore needs a ground-transfer discussion, especially if your onward ticket leaves from O'Hare. For a US domestic connection after ORD, keep the scheduled onward flight as well as the time you actually reached the last airport on the reservation.
LHR departure puts this direction within UK261's territorial scope on any operating airline. That does not establish payment: arrival delay, cancellation notice, replacement timings and the proven cause still matter. Assess ORD–LHR separately; a return ticket does not make both directions identical.
Chicago winter operations can involve snow and de-icing; summer thunderstorms are a separate operational hazard. Those are conditions to investigate, not proof that your specific cancellation was unavoidable. Ask which airport or air-traffic restriction affected the flight and distinguish that explanation from a later aircraft or crew problem.
At Chicago O'Hare, Terminal 5 is important for many international arrivals, but not every international departure leaves there. A missed connection can involve customs, baggage and a terminal change, not just a new gate.
Feroz Sheikh · Founder and editor, Doha, QatarReviewed 29 September 2026 · Not legal advice · Not a named lawyer review
About the editorPreliminary guidance, not legal advice or a compensation guarantee. Check your booking and official sources.