American AirlinesAA17% on time
Flights AA87 09:45 daily · AA55 12:15 daily · AA91 14:25 daily
live
Direct flights from London (LHR) to Chicago (ORD): 21 nonstop departures observed each week across 3 airlines. 33% of the last 21 operated flights arrived within 15 minutes of schedule. The median arrival is 23 minutes late. No cancellations were recorded across the 21 tracked flights. The nonstop covers 6,343 km, an estimated 8 hours 38 minutes in the air. Measured by Pro Flight Search from live flight boards at London and Chicago. Updated 10 September 2026 at 20:39 UTC.
LHR
London
heavy · +35
ORD
Chicago
smooth · +0
6,343 km · ~8h 38m est.
Runs rough · 3 airlines · 21x weekly · nonstop
33% on time
of the last 21 operated LHR → ORD flights arrived within 15 minutes
Median arrival delay is +23 min. 0 of 21 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+23 minacross the last 21 operated legs
Flight time~8h 38mestimated from route distance
Weekly departures21x3 direct airlines on the leg
Cancelled0.0%recent route rate · 0 of 21
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
American AirlinesBritish AirwaysUnited Airlines
Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomes09-10BA2PDarrived−26
09-09BA2PDarrived+30
09-09BA7CParrived+30
Actual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsWeather lens
Current conditions put the pressure at ORD: 38% odds of a 15+ minute delay and around +13 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the London to Chicago route actually runs
Pro Flight Search records official board updates for nonstop LHR to ORD flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — London (LHR) to Chicago (ORD) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/LHR-ORD
LHR to ORD questions
Is LHR–ORD running on time right now?
Mostly on schedule. The departure side at LHR is the weaker end, route health score 77/100. The airports section above carries the live status and delay window at both ends.
Morning or evening flight on LHR–ORD?
Operators schedule morning departures around 08:00 from LHR. Earlier flights typically land before destination-airport delays accumulate later in the day; check the ORD delay card to confirm conditions when you'd arrive.
How long is the flight from LHR to ORD?
Great-circle distance is 6,343 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 478–574 min gate-to-gate on this route.
How often does LHR–ORD fly?
3 carriers operate this route, around 63 flights a week between them. Compare carrier days and times in the airline list above.
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