£377 Find Cheap Flights from London to Chicago – Compare and Save

These are the earliest and latest flight times available from London to Chicago:

• Earliest: departs at 07:40 and lands at 16:44
• Latest: departs at 16:30 and lands at 01:34.

The flight takes about 9h 04m.

Four cabin classes are available on flights from London to Chicago:

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

Prices vary by airline.

A direct flight from London to Chicago takes 9h 04m, covering 3,945 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 London to Chicago range from £549 to £810, with an average of £664 over the past 12 months. Anything below £549 counts as a good deal.

Last-minute fares on this route (booked within two weeks of departure) run 13% above the £664 route average. Book 23 weeks before departure for the lowest fares.

On this route, stopover flights are cheaper than direct options on average. Stopover fares average £411 return via Washington, D.C. Dulles Intl (IAD), compared with £704 for direct.

United Airlines is slightly above the route average for timely arrivals, while American Airlines has a lower on-time arrival rate. On-time arrival rates on London to Chicago flights are:

• United Airlines: 95% on time
• American Airlines: 90% on time
• British Airways: 90% on time

On average, flights on this route are punctual 92% of the time.

There is no standard. Checked bag policies vary by airline on this route. Most carriers charge £42–£75 for the first checked bag in Economy. Premium fares and elite status bookings typically include a free checked bag.

Afternoon is the busiest departure period on London to Chicago flights, with 57% leaving in that window. Morning departures account for 43%, Evening flights for 0%, and Night flights for 0%.

American Airlines is the only airline on the London to Chicago route offering in-flight Wi-Fi. Pricing depends on fare class.

One-way fares from London to Chicago are currently lower than usual. Average one-way flight prices are about £391, which is 25% below the typical average for this route.

Since Chicago is served by multiple airports, car hire options and rates can vary depending on which one you fly into.
Near Chicago O'Hare Intl Airport (ORD) – daily rates from around £13:

• Routes Car & Truck Rentals
• Europcar
• Hertz
• Ace
• Dollar

Near Chicago Midway Airport (MDW) – daily rates from around £24:

• Hertz
• Dollar
• Budget
• Alamo
• Rent-A-Wreck

Near Chicago Greater Rockford Airport (RFD) – daily rates from around £21:

• Alamo
• Enterprise Rent-A-Car
• Budget
• Avis
• National

Flights from London to Chicago may depart from 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), with arrivals available at airports in Chicago such as Chicago Midway (MDW), Chicago O'Hare Intl (ORD) and Chicago Greater Rockford (RFD).

Morning flights have the fewest delays on this route, while afternoon 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 London to Chicago route, 8% of flights were delayed in the past three months, with delays averaging 2h 57m.

One-stop flights from London to Chicago most commonly connect through:

• Reykjavik Keflavik Intl (KEF) – 42% of one-stop connections
• Dublin (DUB) – 24% of one-stop connections
• Kastrup Copenhagen (CPH) – 13% of one-stop connections
• Lisbon Humberto Delgado (LIS) – 11% of one-stop connections

Yes. Flexible dates can save you up to 8% on flights from London to Chicago. Wednesday is the cheapest departure day at £640 return on average, while Sunday is the most expensive at £693, a difference of £52.

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 London and Chicago. The airlines offering direct flights on this route include:

• United Airlines
• British Airways
• American Airlines

Flying via Amsterdam Schiphol (AMS) gives the shortest average 1-stop total travel time of 11h 02m, compared to 11h 14m via Brussels Bruxelles-National (BRU) and 11h 16m via Dublin (DUB).

Chicago is 6 hours behind London (Central Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

Some of the most popular sights in Chicago are Grant Park, Magnificent Mile, and United Center. These are among the most viewed places in Chicago on KAYAK.

Among airlines operating London to Chicago flights:

• British Airways: offers free seat selection
• Finnair: offers free seat selection
• Iberia: offers free seat selection
• United Airlines: offers extra legroom; offers free seat selection
• American Airlines: 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
• Lufthansa: a cabin bag and a checked bag in Economy class
• Finnair: 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.

If you’d prefer to skip the train after your flight from London to Chicago, the taxi rank outside the departure area is just a few steps away from your arrival terminal. A taxi from the airport to the centre will cost around $40 (£32) + tip, although using a rideshare app like Uber or Lyft can get you lower prices.

The convention centre near O’Hare Airport is directly linked to the airport via a shuttle bus. This shuttle bus also features transportation to nearby shopping and dining options for long layovers. If you’re going to the convention centre near the city centre (McCormick Place), a third-party shuttle can be arranged for a direct connection.

Unlimited free WiFi connection is available to travellers in all areas of O’Hare Airport, both before and after security. You have to watch an ad to connect, but after that, you will have access to all the WiFi you need to make additional travel arrangements, organise your emails or complete some last-minute work.

O’Hare Airport has a handful of daily parking options available to travellers. The main parking areas around the airport cost about $40 (£32) per day for parking, while the economy lots, which are accessible via the dedicated airport tram, cost anywhere between approximately $10-17 (£8-13.50) per day.

Before you fly there are hotels you can stay in. For example, at Gatwick Airport there is the Sofitel, which is located in the North Terminal. Whereas at Heathrow you can stay at the Aerotel, which is at Terminal 3. The hotels are located nearby to the airports, so your journey will be made easy the following day.

You can change your money easily upon landing at CHI Airports. For example, at O’Hare International you’ll find a Seaway National Bank in Terminal 2 and in Terminal 5 on both the lower and upper levels. At Midway Airport there is also a Seaway National Bank Currency Exchange, which you will find on the airport’s concourse A.