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Flights from Chicago to London

Find the cheapest direct flight options from Chicago to London over the next three months. Book one-way tickets from CAD 511 and round-trip tickets from CAD 915.

      • Cheapest nonstop
        ORD 20:45
        7h 40m
        Direct
        LHR 10:25
        Chicago - London | Wed, Jan 14 | Finnair
        LHR 14:10
        8h 50m
        Direct
        ORD 17:00
        London - Chicago | Mon, Jan 19 | Finnair
        CAD 915 CAD 1,067
        14% OFF
        14% OFF
        CAD 1,067 CAD 915
      • ORD 18:25
        7h 50m
        Direct
        LHR 08:15
        Chicago - London | Mon, Jan 19 | Finnair
        LHR 12:35
        8h 50m
        Direct
        ORD 15:25
        London - Chicago | Mon, Jan 26 | Finnair
        CAD 918 CAD 1,067
        14% OFF
        14% OFF
        CAD 1,067 CAD 918
      • ORD 19:20
        14h 40m
        1 stop
        LHR 16:00
        Chicago - London | Mon, Jan 19 | Scandinavian Airlines
        LHR 10:20
        12h 25m
        1 stop
        ORD 16:45
        London - Chicago | Mon, Jan 26 | Scandinavian Airlines
        CAD 605 CAD 1,067
        43% OFF
        43% OFF
        CAD 1,067 CAD 605
      • ORD 19:10
        17h 20m
        1 stop
        LHR 18:30
        Chicago - London | Sun, Jan 11 | Scandinavian Airlines
        LHR 06:40
        16h 5m
        1 stop
        ORD 16:45
        London - Chicago | Thu, Jan 15 | Scandinavian Airlines
        CAD 605
        43% OFF
        CAD 1,067 CAD 605
      • ORD 19:20
        17h 10m
        1 stop
        LHR 18:30
        Chicago - London | Wed, Jan 14 | Scandinavian Airlines
        LHR 10:20
        12h 25m
        1 stop
        ORD 16:45
        London - Chicago | Wed, Jan 21 | Scandinavian Airlines
        CAD 606
        43% OFF
        CAD 1,067 CAD 606
      • ORD 19:20
        14h 40m
        1 stop
        LHR 16:00
        Chicago - London | Sat, Jan 24 | Scandinavian Airlines
        LHR 10:20
        12h 25m
        1 stop
        ORD 16:45
        London - Chicago | Wed, Jan 28 | Scandinavian Airlines
        CAD 656
        39% OFF
        CAD 1,067 CAD 656
      • ORD 18:30
        10h 20m
        1 stop
        LHR 10:50
        Chicago - London | Thu, Feb 5 | Icelandair
        LGW 11:55
        11h 25m
        1 stop
        ORD 17:20
        London - Chicago | Sun, Feb 8 | Icelandair
        CAD 665
        38% OFF
        CAD 1,067 CAD 665
      • ORD 18:30
        19h
        1 stop
        LHR 19:30
        Chicago - London | Sat, Jan 24 | Icelandair
        LGW 11:55
        11h 25m
        1 stop
        ORD 17:20
        London - Chicago | Wed, Jan 28 | Icelandair
        CAD 676
        37% OFF
        CAD 1,067 CAD 676
      • ORD 19:20
        14h 40m
        1 stop
        LHR 16:00
        Chicago - London | Thu, Jan 15 | Scandinavian Airlines
        LHR 10:20
        12h 25m
        1 stop
        ORD 16:45
        London - Chicago | Wed, Jan 21 | Scandinavian Airlines
        CAD 678
        37% OFF
        CAD 1,067 CAD 678
      • ORD 19:20
        14h 40m
        1 stop
        LHR 16:00
        Chicago - London | Mon, Jan 26 | Scandinavian Airlines
        LHR 19:30
        27h 15m
        1 stop
        ORD 16:45
        London - Chicago | Fri, Jan 30 | Scandinavian Airlines
        CAD 678
        36% OFF
        CAD 1,067 CAD 678
      • ORD 19:20
        14h 40m
        1 stop
        LHR 16:00
        Chicago - London | Fri, Jan 23 | Scandinavian Airlines
        LHR 19:30
        27h 15m
        1 stop
        ORD 16:45
        London - Chicago | Tue, Jan 27 | Scandinavian Airlines
        CAD 678
        36% OFF
        CAD 1,067 CAD 678
      • ORD 19:20
        14h 40m
        1 stop
        LHR 16:00
        Chicago - London | Mon, Jan 12 | Scandinavian Airlines
        LHR 10:20
        12h 25m
        1 stop
        ORD 16:45
        London - Chicago | Fri, Jan 16 | Scandinavian Airlines
        CAD 678
        36% OFF
        CAD 1,067 CAD 678
      • CHI 13:00
        17h 25m
        1 stop
        LON Invalid Date
        Chicago - London | Mon, Dec 15 | Normal Airline
        LON 15:00
        6h
        Direct
        CHI 16:00
        London - Chicago | Wed, Dec 17 | Normal Airline
        Find More Flights
        Find More Flights
      • Cheapest nonstop
        ORD 21:05
        8h 10m
        Direct
        LHR 11:15
        Chicago - London | Mon, Jan 12 | United Airlines
        CAD 511 CAD 594
        14% OFF
        14% OFF
        CAD 594 CAD 511
      • ORD 21:05
        8h 10m
        Direct
        LHR 11:15
        Chicago - London | Tue, Feb 10 | United Airlines
        CAD 511 CAD 594
        14% OFF
        14% OFF
        CAD 594 CAD 511
      • MDW 13:00
        15h
        1 stop
        LGW 10:00
        Chicago - London | Mon, Jan 26 | Frontier Airlines
        CAD 212 CAD 594
        64% OFF
        64% OFF
        CAD 594 CAD 212
      • ORD 19:21
        28h 39m
        1 stop
        LGW 06:00
        Chicago - London | Tue, Jan 27 | American Airlines
        CAD 233
        61% OFF
        CAD 594 CAD 233
      • ORD 10:48
        17h 12m
        1 stop
        LGW 10:00
        Chicago - London | Mon, Jan 26 | Spirit Airlines
        CAD 234
        61% OFF
        CAD 594 CAD 234
      • ORD 08:16
        15h 44m
        1 stop
        LGW 06:00
        Chicago - London | Tue, Jan 20 | American Airlines
        CAD 243
        59% OFF
        CAD 594 CAD 243
      • ORD 09:40
        14h 20m
        1 stop
        LGW 06:00
        Chicago - London | Tue, Jan 20 | Jetblue Airways
        CAD 244
        59% OFF
        CAD 594 CAD 244
      • MDW 13:00
        15h
        1 stop
        LGW 10:00
        Chicago - London | Mon, Feb 2 | Frontier Airlines
        CAD 247
        57% OFF
        CAD 594 CAD 247
      • ORD 14:50
        13h 10m
        1 stop
        LGW 10:00
        Chicago - London | Mon, Jan 26 | American Airlines
        CAD 252
        57% OFF
        CAD 594 CAD 252
      • MDW 13:00
        15h
        1 stop
        LGW 10:00
        Chicago - London | Mon, Feb 9 | Frontier Airlines
        CAD 259
        56% OFF
        CAD 594 CAD 259
      • ORD 12:05
        15h 35m
        1 stop
        LHR 09:40
        Chicago - London | Thu, Jan 29 | Frontier Airlines
        CAD 267
        55% OFF
        CAD 594 CAD 267
      • ORD 08:45
        15h 15m
        1 stop
        LGW 06:00
        Chicago - London | Wed, Feb 4 | Jetblue Airways
        CAD 267
        55% OFF
        CAD 594 CAD 267
      • CHI 13:00
        17h 25m
        1 stop
        LON Invalid Date
        Chicago - London | Mon, Dec 15 | Normal Airline
        Find More Flights
        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.

Flight Information for Chicago to London Flights

The distance between Chicago and London is 6,354.37km. It takes around 7 hours 55 minutes on average to fly from Chicago to London. Based on Trip.com's data, travel demand peaks in January. The off-season for travel is October.

Cheapest one-way flight priceCAD 212
Cheapest return ticket priceCAD 605
Off-season travel monthOctober
Peak season for travelJanuary
Flight distance6,354.37km
Average flight time7 hours 55 minutes

When is the cheapest time to fly from Chicago to London?

The cheapest time for Chicago to London flights: Jan 25 to Feb 1 — one way flight prices from CAD 212.

Cheapest flights
From price
Search
  • 714
  • 1421
  • 2128

  • Jan

    284
  • 411
  • 1118
  • 1825

  • Feb

    251
  • 18
  • 815
  • 1522

  • Mar

    221
Displayed fare trends are based on Trip.com's aggregated average of the lowest flight prices from Chicago to London, calculated over the upcoming 10 weeks.

Flight FAQs

  • Which airlines offer the cheapest flights from Chicago (CHI) to London (LON)?

    Based on Trip.com data, Frontier Airlines offers one-way fares as low as CAD 212 on Cheapest nonstop routes (e.g. MDW to LGW on Mon, Jan 26), while Scandinavian Airlines offers Cheapest nonstop round-trips from CAD 605 departing on Mon, Jan 19 and returning on Mon, Jan 26.
  • It takes about 7 hours 55 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.
  • 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 Mon, Jan 26, with one-way flights priced at just CAD 212.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is United 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 December flight calendar, it's currently cheapest to fly from Chicago to London on December 31, 2025 with Icelandair, with prices starting at CAD 781.
  • The time difference between London and Chicago is 6h.
  • Tickets can only be changed or cancelled 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.