Flights from London (LHR) to Chicago (ORD)
Compare fares. Direct flights available from £787.65 with Scandinavian Airlines System.
8h 30m
3955 miles
Available
£787.65
Today's Live Prices
Fares updated 2026-10-22 00:00:00 → 2026-10-29 00:00:00 · Round trip · Economy · 1 adult
Scandinavian Airlines System
Scandinavian Airlines System
No checked baggage
7 kg
Scandinavian Airlines System
Scandinavian Airlines System
0P
Upto 7Kg
Scandinavian Airlines System
Scandinavian Airlines System
No checked baggage
7 kg
Aer Lingus
Aer Lingus
1P
Scandinavian Airlines System
Scandinavian Airlines System
No checked baggage
7 kg
Seasonal Travel Tips
- Chicago winters run December to March — pack layers and book a winter fare for the best savings.
- Tuesday departures consistently undercut Monday and Friday prices on this route.
Frequently Asked Questions
How long is the flight from London Heathrow to Chicago?
A direct flight from London Heathrow to Chicago O'Hare International Airport (ORD) takes about 8 hours 30 minutes. One-stop itineraries via Dublin, New York or Toronto add roughly 2-4 hours.
Which airlines fly direct from London to Chicago?
British Airways, American Airlines and United Airlines operate direct flights from London Heathrow to Chicago O'Hare. British Airways runs a daily service with late-afternoon departures.
What is the cheapest time to fly to Chicago?
Mid-January to February is the cheapest window, followed by the shoulder months of May and October. Summer fares peak with holiday and conference demand.
What should I know about arriving at O'Hare?
O'Hare is a major international gateway with efficient transfers. Give yourself at least two hours to clear immigration and connect if you are travelling onward within the US.