Chicago to London (ORD–LHR) — Airlines, Schedules & Connections
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No nonstop flights on this route. connecting options below.
ORD–LHR is served by 1 airline with nonstop service. United Airlines leads the route. The flight covers 3,942 miles in approximately 6h 45m. Beyond nonstop, 97 hubs offer 1-stop connections.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| UA United Airlines Also: LX, OS, SN | 21 | 763 | 8h15-8h20 | Star Alliance | LX, OS, SN |
Weekly Schedule Pattern
Connection Landscape
Travel Essentials
ORD: CDT · LHR: BST
When it's 6:00 PM in Chicago, it's 12:00 AM (next day) in London.
US citizens need a UK Electronic Travel Authorisation (ETA) before travel, applied for online. The ETA costs GBP 10 and is valid for multiple entries over 2 years. Stays are permitted for up to 6 months per visit. Passport must be valid for the duration of stay.
Declare goods over GBP 390 in value. UK duty-free allowances apply on goods from outside the UK.
CTA Blue Line runs 24/7 from downtown Loop stations to O'Hare (45 min, $5). Pace buses serve suburbs. Ride-shares cost $35–55 from downtown depending on traffic; add 30+ minutes during rush hour on the Kennedy Expressway.Economy parking lots E/F connect via ATS people mover. Terminal 5 (international) is separate from Terminals 1–3; allow extra time for inter-terminal transfers.
Heathrow Express runs every 15 minutes to Paddington (15 min, £25). Piccadilly line is slower (50–60 min) but £5.50 with Oyster. National Express coaches serve all terminals from Victoria (60–90 min, £6–10). Black cabs cost £50–90 to central London depending on traffic and time of day.
Mild maritime climate. Summers average 18–23°C with long daylight hours. Winters are 2–7°C, rarely below freezing. Rain is frequent year-round but rarely heavy. Pack layers and a waterproof jacket regardless of season. Fog can disrupt flights November through February.
ORD–LHR Quick Facts
Frequently Asked Questions
Chicago O'Hare to London Heathrow
ORD–LHR is a major transatlantic corridor connecting the Midwest's largest hub to Europe's busiest airport. Multiple carriers offer daily nonstop service, with eastbound flights averaging 7.5–8 hours and westbound returns taking 9–9.5 hours.
Hub Connectivity
O'Hare's position as a major domestic hub makes it the natural transatlantic gateway for Midwest travelers. Heathrow's extensive global network means most onward destinations are reachable with a single connection through London.