£225 Find Cheap Flights from Chicago to London – Compare and Save

The cheapest return flight from Chicago O'Hare Intl Airport to London costs £686 on the route between Chicago O'Hare Intl Airport (ORD) and London Heathrow Airport (LHR). It is also the most popular route.

If you are looking for a flight deal from Chicago to London, look for departures on Mondays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from London, Wednesday is the cheapest day to fly and Sunday is the most expensive.

The cheapest month for flights from Chicago O'Hare Intl Airport to London is January, where tickets cost £482 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £1,018 and £826 respectively.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at £750 on average.

In the past 5 days, the cheapest return tickets from Chicago to London were found on Icelandair (£521) and Scandinavian Airlines (£527).

American Airlines connects Chicago to London with 21 flights per week and both British Airways and United Airlines also offer 21 flights per week.

Weekly flights between Chicago and London historically see delays in approximately 24% of cases, with the average delay over the past year being 166 minutes.

Typically, flights leaving in the early afternoon tend to face fewer delays, whereas flights at night have historically encountered delays more often.

Statistically, Saturday is the day of the week with the fewest delays on this flight route, while Sunday has typically experienced more delays than other days.

Based on our data, British Airways have experienced the fewest delays on this route in the past 12 months, with only about 24% of their flights encountering any delays.

Dublin (DUB) is the top choice – 33% of KAYAK users who clicked on one-stop flights from Chicago to London picked an itinerary connecting there.

Flights via Copenhagen (CPH) offer the most affordable fares, with an average price of £425 for a return.

Consider flying via Dublin (DUB) for the shortest journey. The average one-way travel time for flights connecting there is 10h 25m.

If you prefer a quick connection, Dublin (DUB) often has the shortest stopovers from Chicago to London, with an average time of 1h 55m.

There are 3 cabin class options for the route. These are Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Each day, there are 9 direct flights that take off from Chicago O'Hare Intl Airport and land in London, with an average flight time of 8h 03m. The most common departure time is 17:00 and most flights take off in the evening. Each week, there are 63 flights and there are the same number of flights each day (9).