Cheap flights from Chicago to London

Chicago to London is about eight hours over the Atlantic, and the cheapest fare on the board today is $707. O’Hare is a United hub, and with British Airways, American and Virgin also flying the route, competition keeps prices honest.

January and February are the cheapest months, with a second dip in early November before the holidays. Summer and late December are the peaks. Nearly all flights land at Heathrow, which has quick rail connections into the center, so a red-eye out of Chicago has you in London ready to start the day.

London works well as a base for a wider Europe trip. Paris is a two-hour-twenty Eurostar ride away once you land, an easy second stop. The London city guide has where-to-stay detail; Paris is the natural pairing if you want two cities in one trip.

The fares below are pulled live from the Aviasales feed and shift daily. Tap a row to book at the current price.