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Flights from Chicago to London

Book direct flights from Chicago to London: One way flights from $366, round trip flights from $1,064. Find flight deals for the next 3 months below.

      • Cheapest nonstop
        ORD 5:55 PM
        7h 45m
        Nonstop
        LHR 7:40 AM
        Chicago - London | Tue, May 19 | American Airlines
        LHR 9:45 AM
        8h 40m
        Nonstop
        ORD 12:25 PM
        London - Chicago | Tue, May 26 | American Airlines
        $1,064 $1,382
        23% off
        23% off
        $1,382 $1,064
      • ORD 5:55 PM
        7h 45m
        Nonstop
        LHR 7:40 AM
        Chicago - London | Tue, May 19 | Iberia
        LHR 9:45 AM
        8h 40m
        Nonstop
        ORD 12:25 PM
        London - Chicago | Tue, May 26 | Iberia
        $1,091 $1,382
        21% off
        21% off
        $1,382 $1,091
      • ORD 7:15 PM
        14h 45m
        1 stop
        LHR 4:00 PM
        Chicago - London | Wed, May 27 | Scandinavian Airlines
        LHR 7:30 PM
        26h 40m
        1 stop
        ORD 4:10 PM
        London - Chicago | Tue, Jun 2 | Scandinavian Airlines
        $749 $1,382
        46% off
        46% off
        $1,382 $749
      • ORD 9:55 AM
        16h
        1 stop
        LGW 7:55 AM
        Chicago - London | Thu, May 28 | Air Canada
        LGW 9:40 AM
        16h 36m
        1 stop
        ORD 8:16 PM
        London - Chicago | Mon, Jun 1 | Air Transat
        $782
        43% off
        $1,382 $782
      • ORD 9:55 AM
        16h
        1 stop
        LGW 7:55 AM
        Chicago - London | Sat, May 30 | Air Canada
        LGW 9:40 AM
        16h 36m
        1 stop
        ORD 8:16 PM
        London - Chicago | Sat, Jun 6 | Air Transat
        $792
        43% off
        $1,382 $792
      • ORD 2:15 PM
        14h 30m
        1 stop
        LGW 10:45 AM
        Chicago - London | Wed, May 27 | Air Canada
        LGW 9:40 AM
        16h 36m
        1 stop
        ORD 8:16 PM
        London - Chicago | Mon, Jun 1 | Air Transat
        $797
        42% off
        $1,382 $797
      • ORD 8:50 AM
        19h 55m
        1 stop
        LGW 10:45 AM
        Chicago - London | Sun, May 31 | Air Canada
        LGW 9:40 AM
        13h 19m
        1 stop
        ORD 4:59 PM
        London - Chicago | Sat, Jun 6 | Air Transat
        $803
        42% off
        $1,382 $803
      • ORD 9:55 AM
        18h 50m
        1 stop
        LGW 10:45 AM
        Chicago - London | Tue, Jun 2 | Air Canada
        LGW 12:40 PM
        12h 45m
        1 stop
        ORD 7:25 PM
        London - Chicago | Thu, Jun 4 | Air Transat
        $827
        40% off
        $1,382 $827
      • ORD 7:25 AM
        21h 20m
        1 stop
        LGW 10:45 AM
        Chicago - London | Thu, Jun 4 | Air Canada
        LGW 12:40 PM
        12h 45m
        1 stop
        ORD 7:25 PM
        London - Chicago | Thu, Jun 11 | Air Transat
        $846
        39% off
        $1,382 $846
      • ORD 9:55 AM
        14h 40m
        1 stop
        LHR 6:35 AM
        Chicago - London | Tue, May 26 | Air Canada
        LHR 8:30 AM
        12h 25m
        1 stop
        ORD 2:55 PM
        London - Chicago | Sun, May 31 | Air Canada
        $860
        38% off
        $1,382 $860
      • ORD 1:24 PM
        14h 26m
        1 stop
        LGW 9:50 AM
        Chicago - London | Fri, May 29 | American Airlines
        LGW 11:35 AM
        13h 52m
        1 stop
        ORD 7:27 PM
        London - Chicago | Wed, Jun 3 | Air Transat
        $890
        36% off
        $1,382 $890
      • ORD 11:40 AM
        14h 15m
        1 stop
        LGW 7:55 AM
        Chicago - London | Sat, May 30 | American Airlines
        LGW 9:40 AM
        15h 58m
        1 stop
        ORD 7:38 PM
        London - Chicago | Sat, Jun 6 | Air Transat
        $899
        35% off
        $1,382 $899
      • CHI 1:00 PM
        17h 25m
        1 stop
        LON 2:00 PM
        Chicago - London | Tue, May 19 | Normal Airline
        LON 3:00 PM
        6h
        Nonstop
        CHI 4:00 PM
        London - Chicago | Thu, May 21 | Normal Airline
        Find more flights
        Find more flights
      • Cheapest nonstop
        ORD 8:40 PM
        7h 50m
        Nonstop
        LHR 10:30 AM
        Chicago - London | Tue, Jul 7 | American Airlines
        $366 $503
        27% off
        27% off
        $503 $366
      • ORD 6:29 PM
        29h 51m
        1 stop
        LGW 6:20 AM
        Chicago - London | Thu, Jul 16 | Delta Air Lines
        $324 $503
        36% off
        36% off
        $503 $324
      • ORD 7:00 AM
        20h 15m
        1 stop
        LHR 9:15 AM
        Chicago - London | Sat, Jul 4 | Delta Air Lines
        $338 $503
        33% off
        33% off
        $503 $338
      • ORD 7:00 AM
        20h 15m
        1 stop
        LHR 9:15 AM
        Chicago - London | Wed, Jul 15 | Delta Air Lines
        $342
        32% off
        $503 $342
      • ORD 7:00 AM
        17h 20m
        1 stop
        LGW 6:20 AM
        Chicago - London | Tue, Jun 9 | Delta Air Lines
        $346
        31% off
        $503 $346
      • ORD 7:00 AM
        17h 30m
        1 stop
        LHR 6:30 AM
        Chicago - London | Sun, Jul 5 | Delta Air Lines
        $368
        27% off
        $503 $368
      • ORD 7:29 AM
        23h 31m
        1 stop
        LHR 1:00 PM
        Chicago - London | Sun, May 24 | American Airlines
        $380
        24% off
        $503 $380
      • ORD 2:18 PM
        16h 42m
        1 stop
        LHR 1:00 PM
        Chicago - London | Sun, May 24 | Alaska Airlines
        $394
        22% off
        $503 $394
      • ORD 8:11 PM
        28h 9m
        1 stop
        LGW 6:20 AM
        Chicago - London | Thu, Jul 2 | Delta Air Lines
        $396
        21% off
        $503 $396
      • ORD 10:00 AM
        14h 20m
        1 stop
        LGW 6:20 AM
        Chicago - London | Wed, Jul 8 | Delta Air Lines
        $397
        21% off
        $503 $397
      • CHI 1:00 PM
        17h 25m
        1 stop
        LON 2:00 PM
        Chicago - London | Tue, May 19 | Normal Airline
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        Find more flights

Displayed flight fares from Chicago to London are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Trip.com price insights on flights from Chicago to London

Which month has the cheapest one-way flights from to London?

The average price of one-way flights from to London purchased by Trip.com users by month over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from to London is August, with an average price of $428; while the month with the highest flight price is usually May, with an average price of up to $776.

$776
$602
$428
$254
    Cheapest
  • $776
    May
  • $557
    Jun
  • $630
    Jul
  • $428
    Aug
  • $484
    Sep
  • $558
    Oct
  • $772
    Nov
  • $529
    Dec
  • $525
    Jan
  • $431
    Feb
  • $606
    Mar
  • $560
    Apr

What is the cheapest month for round-trip flights from to London?

Average price of round-trip flights from to London purchased by Trip.com users by month over the past 12 months

According to historical data from Trip.com, the lowest prices for flights from to London are found during February, with an average price of $636. Conversely, the highest prices are found during June, with an average price of up to $2,376.

$2,376
$1,506
$636
0
    Cheapest
  • $1,145
    May
  • $2,376
    Jun
  • $1,396
    Jul
  • $644
    Aug
  • $785
    Sep
  • $857
    Oct
  • $1,075
    Nov
  • $1,199
    Dec
  • $743
    Jan
  • $636
    Feb
  • $856
    Mar
  • $1,096
    Apr

When is the cheapest day to fly from Chicago to London during Memorial Day?

Data is based on the lowest one-way price from Chicago to London during Memorial Day on Trip.com in the past 3 days.

Memorial Day is scheduled for May 25. The cheapest flights from Chicago to London are available on May 23, with fares starting at $441.

$973
$707
$441
$175
  • $484
    22
    May
  • $441
    23
  • $973
    24
  • $675
    25
  • $618
    26
  • $694
    27

Frequently Asked Questions

  • What are the cheapest flights from Chicago to London (CHI-LON)?

    Based on Trip.com data, Delta Air Lines offers one-way fares as low as $324 on Cheapest nonstop routes (e.g. ORD to LGW on Thu, Jul 16), while Scandinavian Airlines offers Cheapest nonstop round-trips from $749 departing on Wed, May 27 and returning on Tue, Jun 2.
  • At the moment, you can catch a nonstop flight from Chicago to London with the following airlines, including: United Airlines Air Canada British Airways American Airlines Jetblue Airways Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes around 7 hours 58 minutes to fly from Chicago (CHI) to London (LON).
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Chicago to London is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • Based on Trip.com data in the past 4 weeks, there is 36 flight per week flying from Chicago to London. You can check the weekly schedule for popular airlines on this route below: British Airways: S/M/T/W/T/F/S -- BA296 (23:07) American Airlines: S/M/T/W/T/F/S -- AA7005 (23:07)
  • To find best deals on flights from Chicago to London, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Thu, Jul 16, with one-way flights priced at just $324.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is American Airlines.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for London travel is around January.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Chicago to London is October, when demand for travel is lower.
  • After crunching the numbers on our May flight calendar, it's currently cheapest to fly from Chicago to London on May 17, 2026 with American Airlines, with prices starting at $353.
  • You can land at any one of the following hubs in London, with Chicago O'Hare International Airport to Heathrow Airport (ORD-LHR) is by far the most common option on this route: Heathrow Airport (LHR) London Gatwick Airport (LGW) London City Airport (LCY) London Luton Airport (LTN) London Stansted Airport (STN) London Southend Airport (SEN).
  • The time difference between London and Chicago is 6h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

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Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.