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https://www.kayak.com/flights/CHI-LON/2021-02-24?sort=bestflight_a




 One-way

Our Advice:Buy now
Prices are unlikely to get any better before you travel.
Our data scientists think these are the best prices you'll see for the next seven days. Like weather forecasters, though, they can't be 100% certain. Our purchase advisory, shown here, is based on an analysis of current and past prices.
Our Advice
Buy now
Prices are unlikely to get any better before you travel. 
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112 of 336 flights

Stops

    • Airports

    Chicago
    • London

    • Fee Assistant

     
    Carry-on bag
    0 carry-on bags selected
    Checked bag
    0 checked bags selected

    Times

    Take-off from CHI
    Wed 1:00 AM–10:30 PM
    Landing at LON
    Thu 6:00 AM–Sat 11:00 AM

    Airlines

    Select all | Clear all
    Show 30 more airlines

    Alliance

    Duration

    Flight leg
    7h 35m–59h 40m
    Layover
    0h 40m–47h 38m
    Flight results are ready
    COVID-19 
    The United Kingdom has reimposed national lockdown. Foreign nationals are subject to the ‘Stay at Home’ regulations. All travelers must have a medical certificate with a negative COVID-19 test result and are subject to a 10-day self-isolation upon arrival.
     Learn more
    ba.com
    Fly Chicago to London
    Book flights with the flexibility to change your plans, so you can fly with confidence.
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    $833
    British Airways
    View Deal
    Eco-friendly
    Best
    Cheapest
    COVID-19 policies
    Rating:10
    1. Finnair logo
      7:00 pm – 8:40 am +1
      Finnair
      nonstop
      7h 40m
      ORD
       ‐ 
      LHR
    Operated by American Airlines
    Eco-friendly choice
    This flight emits less CO₂ than the average for your search.
    Eco-friendly
    COVID-19 policies
    Rating:7
    1. Iberia logo
      5:10 pm – 6:50 am +1
      Iberia
      nonstop
      7h 40m
      ORD
       ‐ 
      LHR
    Operated by British Airways
    COVID-19 policies
    Rating:7
    1. Austrian Airlines logo
      6:00 pm – 7:35 am +1
      Austrian Airlines
      nonstop
      7h 35m
      ORD
       ‐ 
      LHR
    Operated by United Airlines
    Eco-friendly
    No change fees
    COVID-19 policies
    Rating:7
    1. United Airlines logo
      6:00 pm – 7:35 am +1
      United Airlines
      nonstop
      7h 35m
      ORD
       ‐ 
      LHR
    edreams.com
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    $660
    edreams.net
    View Deal
    COVID-19 policies
    Rating:7
    1. British Airways logo
      7:00 pm – 8:40 am +1
      British Airways
      nonstop
      7h 40m
      ORD
       ‐ 
      LHR
    Operated by American Airlines
    COVID-19 policies
    Rating:3
    1. Aer Lingus logo
      4:50 pm – 9:00 am +1
      Aer Lingus
      1 stop
      DUB
      10h 10m
      ORD
       ‐ 
      LHR
    COVID-19 policies
    Rating:2
    1. Aer Lingus logo
      4:50 pm – 7:50 pm +1
      Aer Lingus
      1 stop
      DUB
      21h 00m
      ORD
       ‐ 
      LHR
    No change fees
    COVID-19 policies
    Rating:2
    1. United Airlines logo
      2:00 pm – 6:20 am +1
      United Airlines
      1 stop
      IAD
      10h 20m
      ORD
       ‐ 
      LHR
    flightsguru.co.uk
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    View Deal
    No change fees
    COVID-19 policies
    Rating:2
    1. United Airlines logo
      2:20 pm – 7:25 am +1
      United Airlines
      1 stop
      EWR
      11h 05m
      ORD
       ‐ 
      LHR
    No change fees
    COVID-19 policies
    Rating:2
    1. Delta logo
      1:22 pm – 8:30 am +1
      Delta
      1 stop
      ATL
      13h 08m
      ORD
       ‐ 
      LHR
    COVID-19 policies
    Rating:2
    1. United Airlines logo
      Lufthansa logo
      10:00 am – 6:20 am +1
      United Airlines, Lufthansa
      1 stop
      IAD
      14h 20m
      ORD
       ‐ 
      LHR
    Operated by United Airlines
    1
    0
    No change fees
    COVID-19 policies
    Rating:2
    1. United Airlines logo
      10:00 am – 6:20 am +1
      United Airlines
      1 stop
      IAD
      14h 20m
      ORD
       ‐ 
      LHR
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    View Deal
    No change fees
    COVID-19 policies
    Rating:2
    1. Delta logo
      11:30 am – 8:30 am +1
      Delta
      1 stop
      ATL
      15h 00m
      MDW
       ‐ 
      LHR
    Operated by Republic Airways Delta Connection
    No change fees
    COVID-19 policies
    Rating:2
    1. Delta logo
      10:08 am – 8:30 am +1
      Delta
      1 stop
      ATL
      16h 22m
      ORD
       ‐ 
      LHR
    COVID-19 policies
    Rating:2
    1. United Airlines logo
      Lufthansa logo
      8:50 am – 7:25 am +1
      United Airlines, Lufthansa
      1 stop
      EWR
      16h 35m
      ORD
       ‐ 
      LHR
    Operated by United Airlines
    1
    0
    *
    Prices are per person and do not include baggage fees. Some train and bus prices may not include a service fee added by the provider at checkout.
    ¹Hacker Fares tickets are sold to/from a destination via different airlines and are subject to each airline's booking requirements and terms, including changes to itineraries. Any changes made to one of your tickets will not necessarily afford rights to change the other ticket. Fares change frequently and are subject to availability. International travel may require proof of return flight.
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