£240 Find Cheap Flights from Chicago to London – Compare and Save

These are the earliest and latest flight times available from Chicago O'Hare Intl Airport to London:

• Earliest: departs at 15:45 and lands at 23:44
• Latest: departs at 22:50 and lands at 06:49.

The flight takes about 7h 59m.

Four cabin classes are available on flights from Chicago O'Hare Intl Airport to London:

• Economy class
• Premium Economy Class
• Business Class
• First Class

Prices vary by airline.

A direct flight from Chicago O'Hare Intl Airport to London takes 7h 59m, covering 3,951 miles.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Return flights from Chicago O'Hare Intl Airport to London range from £520 to £864, with an average of £661 over the past 12 months. Anything below £520 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 7% above the £661 route average. Book 21 weeks before departure for the lowest fares.

On this route, stopover flights are cheaper than direct options on average. Stopover fares average £416 return via Paris Charles de Gaulle (CDG), compared with £706 for direct.

American Airlines is slightly above the route average for timely arrivals, while British Airways has a lower on-time arrival rate. On-time arrival rates on Chicago O'Hare Intl Airport to London flights are:

• American Airlines: 78% on time
• British Airways: 78% on time
• United Airlines: 75% on time

On average, flights on this route are punctual 77% of the time.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £26–£75 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

Evening is the busiest departure period on Chicago O'Hare Intl Airport to London flights, with 57% leaving in that window. Night departures account for 28%, Afternoon flights for 14%, and Morning flights for 1%.

Four airlines offer in-flight Wi-Fi on Chicago O'Hare Intl Airport to London flights:

• British Airways
• American Airlines
• Iberia
• Finnair

Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty programme, while others are paid add-ons priced by flight length.

One-way fares from Chicago O'Hare Intl Airport to London are currently lower than usual. Average one-way flight prices are about £246, which is 34% below the typical average for this route.

Since London is served by multiple airports, car hire options and rates can vary depending on which one you fly into.
Near London Heathrow Airport (LHR) – daily rates from around £5:

• GREEN MOTION
• DRIVALIA
• Europcar
• Alamo
• Hertz

Near London Gatwick Airport (LGW) – daily rates from around £6:

• GREEN MOTION
• DRIVALIA
• U-Save
• Europcar
• Alamo

Near London City Airport (LCY) – daily rates from around £8:

• GREEN MOTION
• Budget
• Hertz
• Avis
• Sixt

Near London Stansted Airport (STN) – daily rates from around £7:

• GREEN MOTION
• DRIVALIA
• Europcar
• Alamo
• U-Save

Near London Luton Airport (LTN) – daily rates from around £8:

• GREEN MOTION
• DRIVALIA
• Alamo
• Europcar
• U-Save

Flights from Chicago O'Hare Intl Airport to London usually depart from Chicago O'Hare Intl (ORD) and may arrive at several airports in London area, including London City (LCY), London Gatwick (LGW), London Heathrow (LHR), London Luton (LTN), London Southend (SEN) and London Stansted (STN).

Afternoon flights have the fewest delays on this route, while night departures tend to have the most.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Chicago O'Hare Intl Airport to London route, 23% of flights were delayed in the past three months, with delays averaging 2h 40m.

One-stop flights from Chicago O'Hare Intl Airport to London most commonly connect through:

• Reykjavik Keflavik Intl (KEF) – 44% of one-stop connections
• Dublin (DUB) – 28% of one-stop connections
• Kastrup Copenhagen (CPH) – 7% of one-stop connections
• Lisbon Humberto Delgado (LIS) – 6% of one-stop connections

Yes. Flexible dates can save you up to 17% on flights from Chicago O'Hare Intl Airport to London. Wednesday is the cheapest departure day at £615 return on average, while Saturday is the most expensive at £737, a difference of £122.

KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

3 airlines operate flights between Chicago O'Hare Intl Airport and London. The airlines offering direct flights on this route include:

• United Airlines
• British Airways
• American Airlines

Flying via Cincinnati Cinci./N. Kentucky (CVG) gives the shortest average 1-stop total travel time of 11h 02m, compared to 11h 13m via Amsterdam Schiphol (AMS) and 11h 19m via Dublin (DUB).

London is 5 hours ahead of Chicago O'Hare Intl Airport (British Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in London are Hyde Park, Tower Bridge, and Royal Albert Hall. These are among the most viewed places in London on KAYAK.

Among airlines operating Chicago O'Hare Intl Airport to London flights:

• British Airways: offers extra legroom; offers free seat selection
• American Airlines: offers extra legroom; offers free seat selection
• United Airlines: offers extra legroom; offers free seat selection
• Iberia: offers free seat selection
• Finnair: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• British Airways: a cabin bag and a checked bag in Economy class
• American Airlines: a cabin bag and a checked bag in Economy class
• United Airlines: a cabin bag and a checked bag in Economy class

Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.