London to Chicago Flights on Aer Lingus from £268.04*

Promo Code

Book London (LON) to Chicago (ORD) flight deals*

cmp-daily-histogram-bars-legend-min-price-aria-label £269.06
Displaying fares for September-2026
  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    02

    We

    SEP

  • LHR–ORD, 3 Sep 2026 – 8 Sep 2026: From £412.69
    03

    Th

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    04

    Fr

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    05

    Sa

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    06

    Su

  • LHR–ORD, 7 Sep 2026 – 14 Sep 2026: From £416.49
    07

    Mo

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    08

    Tu

  • LHR–ORD, 9 Sep 2026 – 16 Sep 2026: From £269.06
    09

    We

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    10

    Th

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    11

    Fr

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    12

    Sa

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    13

    Su

  • LHR–ORD, 14 Sep 2026 – 18 Sep 2026: From £425.89
    14

    Mo

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    15

    Tu

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    16

    We

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    17

    Th

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    18

    Fr

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    19

    Sa

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    20

    Su

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    21

    Mo

  • LHR–ORD, 22 Sep 2026 – 29 Sep 2026: From £313.58
    22

    Tu

  • LHR–ORD, 23 Sep 2026 – 27 Sep 2026: From £291.31
    23

    We

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    24

    Th

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    25

    Fr

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    26

    Sa

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    27

    Su

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    28

    Mo

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    29

    Tu

  • LON–ORD: cmp-view-offers-disclaimer. Check Availability
    30

    We

  • LHR–ORD, 1 Oct 2026 – 8 Oct 2026: From £353.81
    01

    Th

    OCT

  • Range£269.06-£425.89
    Iconic Chicago skyline, featuring prominent skyscrapers

    Flights from London to Chicago

    The largest city in the mid-west, Chicago offers amazing architectural beauty, incredible museums and some of the best food in the US (including deep pan pizza). The windy city has an amazing atmosphere and is a great location for families, couples, backpackers, and business.

    Why fly London to Chicago with Aer Lingus?

    You’ll love flying from London to Chicago via Dublin with Aer Lingus for a smoother, more relaxed journey. Enjoy easy connections, US preclearance in Dublin, and warm Irish hospitality all the way to the Windy City.

    How long is the flight from London to Chicago?

    Flight time is usually around 8-9 hours, it’s approximately 3,945 miles (6,348 km) to Chicago from London. But with our excellent on flight entertainment you can sit back and relax, plus with pre-clearance in Dublin you can land in Chicago like a local, with no need to go through customs.

    Things to do and places to see in Chicago

    Chicago is a unique city in the United States. It's the largest city in Illinois and the third largest in the United States. Located on the shores of Lake Michigan, Chicago has a lot to offer. While visiting don't forget to visit Millennium Park and enjoy public art installations, the gorgeous surrounding architecture or events and concerts. If you visit during winter, take a spin around the skating rink. Other attractions worth visiting are:

    Lincoln Park Zoo: Lincoln Park Zoo is home to a wide range of animals, including big cats, polar bears, penguins, gorillas, reptiles, monkeys and more totalling about 1,100 animals. Admission is free and it is located just minutes from downtown Chicago at Lake Shore Drive. There is parking available nearby. The ZOO is open every day and definitely worth a stroll around, especially if you are travelling with kids!

    Chicago Architecture River Cruise: Chicago's tall buildings are well known to most and there is nothing like seeing it from a leisurely cruise on the river. The 75 minute architecture boat tour will show you over 40 Chicago landmarks. Sit back and enjoy the magnificent views that Chicago has to offer. Adults go for $40 and children for $20.

    360 Chicago Observation Deck: Tower above the Windy City's world-famous skyline with admission to 360 Chicago. 94 floors high, the observation deck is one of the tallest buildings in America. This is an amazing experience! Take a super-fast lift to the top of the tower and admire Chicago from above. Upgrade your ticket to include TILT and enjoy a downward-facing ride from 1,030 feet. Standard tickets are $21, make sure you book in advance.

    How many days do you need in Chicago? Many people recommend around 4 days in Chicago, but it may depend on what type of trip you are looking for. Many culture and architect buffs like to spend bit longer as the city has some unique museums (including; Art Institute of Chicago, Museum of Science and Industry, Field Museum of Natural History) and some incredible buildings (including; Willis Tower, Aon Centre, Franklin Centre). You can even go on an architectural cruise to see them from a different perspective. An absolute must is to head to Millennium Park and take a photo with the Bean.

    Email Sign Up
    Aer Lingus Newsletter
    Sign Up and Save

    Be first to receive current offers

    Learn about new and exciting destinations

    Get the latest travel news and more

    Book London to Chicago flight deals*

    Book London to Chicago flight deals*
    From
    To
    Fare Type
    Dates
    Price
    London (LHR)Chicago (ORD)Each way
    /
    Economy
    26 Mar 2027 - 9 Apr 2027

    From

    £344.08

    Seen: 23 hrs ago

    London (LHR)Chicago (ORD)Each way
    /
    Economy
    8 Jul 2027 - 23 Jul 2027

    From

    £312.12

    Seen: 1 hour ago

    London (LHR)Chicago (ORD)Each way
    /
    Economy
    8 May 2027 - 16 May 2027

    From

    £318.73

    Seen: 1 hour ago

    London (LHR)Chicago (ORD)Each way
    /
    Economy
    26 May 2027 - 4 Jun 2027

    From

    £370.82

    Seen: 47 minutes ago

    * Fares displayed include air transportation charges, taxes and fees. Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Fares are economy class and may include connections with our partner airlines. Modifying this information may result in a different fare. Additional baggage fees and charges for optional products and services may apply.

    Explore other routes