C$ 528 Find Cheap Flights from Chicago to London

For Chicago to London, Monday is the cheapest day to fly on average and Tuesday is the most expensive. Flying from London back to Chicago, the best deals are generally found on Friday, with Saturday being the most expensive.

The cheapest month for flights from Chicago O'Hare Intl Airport to London Heathrow Airport is January, where tickets cost C$ 887 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is C$ 1,912 and C$ 1,332 respectively.

No, with an average price for the route of C$ 1,252, prices are generally cheapest when you fly direct.

To get a below average price on the flight from Chicago O'Hare Intl Airport to London Heathrow Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

In the past 5 days, the cheapest round-trip tickets from Chicago to London were found on Delta (C$ 1,279) and Finnair (C$ 1,280).

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 25% of cases, with the average delay over the past year being 171 minutes.

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

Statistically, Tuesday 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, United Airlines have experienced the fewest delays on this route in the past 12 months, with only about 25% of their flights encountering any delays.

There are 2 cabin class options for the route. These are 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 nonstop flights that take off from Chicago O'Hare Intl Airport and land in London Heathrow Airport, with an average flight time of 8h 00m. The most common departure time is 6:00 p.m. and most flights take off in the evening. Each week, there are 63 flights and there are the same amount of flights each day (9).