$301 Find Cheap Flights from Chicago to London - Compare and Save

You should select your arrival airport depending on where you are staying in the UK. Travel times will also differ depending on the type of transport you take. Heathrow Airport is 14 miles west of Central London and arguably the easiest airport for getting to downtown via the London Underground, the Heathrow Express, and bus services. Gatwick is located 25 miles from the city center and is served by the Gatwick Express, Southern, and Thameslink trains.

There are over 60 places to dine at Chicago O’Hare International Airport (ORD), from full-service restaurants to soups and salads. Order a glass of wine or ale, savor a Chicago-style hot dog, or purchase a healthy snack to-go at one of these convenient and cozy locations.

Browse through more than 30 shops at Chicago Airport and pick up last-minute items before you fly. International travelers can choose from a large selection of duty-free items as well as cosmetics, luxury apparel, and travel accessories.

If you’re looking for a place to feed your child, six Mother's rooms are located within Chicago O’Hare International Airport (ORD) and are equipped with comfortable seats, a sink, and changing table. For the convenience of traveling families, there are also a number of unisex restrooms and changing stations in each terminal.

Yes. If you wish to stay overnight or in a day room at London Heathrow Airport (LHR), book your stay at the Aerotel London Heathrow. The establishment is located in Terminal 3 landside and has 82 guest rooms which can be rented hourly or for overnight stays. You can rent a room for 6h, 9h, 12h, or 24h.

London Heathrow Airport (LHR) has a bus station, just a short walk from Terminals 2 and 3, but you’ll also find some buses outside Terminals 4 and 5. Various companies provide these buses, and their services extend to downtown London, west London, railway stations, and many more destinations. You can also take the Heathrow Express, a train from London Heathrow Airport (LHR) to Paddington Station. Trains leave every 15min. The other train is the Heathrow Connect which departs every 30min but offers a slower service. The Underground or the "Tube" to Piccadilly is another train option from London Heathrow Airport (LHR). Taxis and rental cars are also available at Heathrow Airport.

Around 1,602 kg of carbon is emitted per passenger on flights from Chicago to London. Fly with Delta, KLM, or British Airways for a more sustainable journey. These airlines emit 32%, 20%, and 20% less carbon per passenger respectively on these flights to London. Moreover, each of these airlines offers nonstop flights from Chicago to London.

London Gatwick Airport (LGW) is an accessible airport with barrier-free access to all areas of the airport complex. Reserved parking spots are available, and lifts and ramps are in place too. The airport has unisex accessible toilets dotted around the airport for wheelchair users. The airport also has special help points with telephones where passengers with any disability can call and get assistance. The airport also has a one-of-a-kind sensory room which provides a calming and relaxing environment for passengers with disabilities like autism and dementia.

Among airlines operating Chicago 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.

3 airlines operate flights between Chicago and London. The airlines offering nonstop flights on this route include:

• United Airlines
• American Airlines
• British Airways

Flights from Chicago to London may depart from several airports in Chicago area, including Chicago Midway (MDW), Chicago O'Hare Intl (ORD) and Chicago Greater Rockford (RFD), with arrivals available at London area airports such as London City (LCY), London Gatwick (LGW), London Heathrow (LHR), London Luton (LTN), London Southend (SEN) and London Stansted (STN).

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

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

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

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

Prices vary by airline.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $437 round-trip via Paris Charles de Gaulle (CDG), compared to $891 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $28–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

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

• Reykjavik Keflavik Intl (KEF) - 44% of one-stop connections
• Dublin (DUB) - 29% of one-stop connections
• Lisbon Humberto Delgado (LIS) - 7% of one-stop connections
• Kastrup Copenhagen (CPH) - 6% of one-stop connections

Reykjavik Keflavik Intl (KEF) handles the largest share of one-stop connections on this route.

Yes. Being flexible with your travel dates can save you up to 18% on the Chicago to London route. Tuesday is the cheapest departure day at $781 round-trip on average, while Saturday is the most expensive at $948, a difference of $167. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

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 to London route, 25% of flights were delayed in the past 3 months, with delays averaging 2 hours 49 minutes.

Evening is the busiest departure period on Chicago to London flights, with 55% of flights leaving in that window. Night departures account for 33%, afternoon flights for 11%, and morning flights for 1%.

Some of the most popular sights in London are Paddington Station, Central London and London Victoria Station. These are among the most viewed places in London on KAYAK.

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

• Earliest: departs at 3:45 pm and lands at 11:47 pm
• Latest: departs at 10:50 pm and lands at 6:52 am.

The flight takes about 8h 02m.

Last-minute fares on this route - booked within 2 weeks of departure - run 0% above the route average of $839. Book 5 weeks before departure for the lowest fares.

A nonstop flight from Chicago to London takes 8h 02m, 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.

One-way fares from Chicago to London are currently lower than usual. Average one-way flight prices are about $307, which is 37% below the typical average for this route.

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

• British Airways: 76% on time
• American Airlines: 76% on time
• United Airlines: 74% on time

Overall, flights on this route are on time 75% of the time on average.

Afternoon flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

Flying via Cincinnati Cinci./N. Kentucky (CVG) gives the shortest average 1-stop total travel time at 11h 02m, compared with 11h 15m via Dublin (DUB) and 11h 17m via Amsterdam Schiphol (AMS).

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

Since London is served by multiple airports, car rental options and rates can vary depending on which one you fly into.
Near London Heathrow Airport (LHR) — daily rates from around $7:

· GREEN MOTION
· DRIVALIA
· Europcar
· Alamo
· Hertz

Near London Gatwick Airport (LGW) — daily rates from around $8:

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

Near London City Airport (LCY) — daily rates from around $11:

· GREEN MOTION
· Budget
· Hertz
· Avis
· Sixt

Near London Luton Airport (LTN) — daily rates from around $11:

· GREEN MOTION
· DRIVALIA
· Alamo
· Europcar
· Budget

Near London Stansted Airport (STN) — daily rates from around $10:

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

Round-trip flights from Chicago to London range from $669 to $1,101, with an average of $839 over the past 12 months. Anything below $669 counts as a good deal.

Four airlines offer in-flight Wi-Fi on Chicago to London flights:

• • British Airways
• • American Airlines
• • Iberia
• • Finnair