Flights from Chicago to London
Flights from Chicago to London take about 8h 30m nonstop, and the two cities are about 6,340 km apart. Compare live prices for your dates below.
Cheapest recent fare
$660
Round trip · 16 Jan – 18 Jan · 1 stop
Search these datesFound in the last few days, per person, economy. The provider confirms the final price.
- Approx. flying time
- About 8h 30m
- Best time to visit London
- May to September for long days; December for lights and markets
Flight tip: Heathrow, Gatwick, Stansted and Luton all serve London. Compare all of them: a cheaper fare into a smaller airport can outweigh the train fare into town. Read our London guide
Chicago to London flights: quick answers
How long is the flight from Chicago to London?
It’s about 8h 30m nonstop. That’s a rough guide worked out from the 6,340 km between ORD and LHR; scheduled times vary by airline and direction, because winds can make one way slower, and a flight with a connection takes longer.
How long is the flight back from London to Chicago?
About the same time in the air, roughly 8h 30m, because the distance is the same. High-altitude winds usually make one direction faster than the other, so check the scheduled times in your search results.
How far is London from Chicago?
About 6,340 km (3,940 miles) between ORD and LHR, in a straight line. The path a plane flies is usually a little longer.
What is the time difference between Chicago and London?
London is 6 hours ahead of Chicago right now; at other times of year it’s 5 hours ahead, because of daylight saving time.
Which airports can I fly from in Chicago?
O’Hare handles Chicago’s international flights; Midway is mainly for flights within the US.
Which airport do I fly into in London?
Heathrow (LHR) is London’s main airport. Other airports and when to go: our London guide
When is the best time to visit London?
May to September for long days; December for lights and markets.
What are my rights if my Chicago to London flight is cancelled?
Under US Department of Transportation rules, if the airline cancels your flight or changes it significantly and you choose not to travel, you’re entitled to a refund, even on a non-refundable ticket. On international trips, leaving 6 hours or more earlier, or arriving 6 hours or more later, than scheduled counts as a significant change. US Department of Transportation: Refunds (opens in a new tab)
What do I need to enter the country when I fly to London?
Rules change, so check them again shortly before you travel. GOV.UK: Electronic travel authorisation (ETA) for visitors to the UK (opens in a new tab)
Before you fly
Cheapest month to fly from Chicago
Lowest round-trip fare per person found recently for departures in each month, from Chicago. Months with no recent fare aren’t shown.
Plan the rest of your trip to London
Our partners for the rest of the journey. You book and pay with them directly.
- Places to stayCompare hotels and apartments for your dates.Find hotelswith our sister company, Wicket Travel Holidays (opens in a new tab)
- Car hireCompare rental cars from the airport or the city.Compare carswith our sister company, Wicket Travel Holidays (opens in a new tab)
- Airport transferBook a fixed-price ride from the airport to your hotel.Book a transferwith Kiwitaxi (opens in a new tab)
- Mobile dataGet an eSIM before you fly and land connected.Get an eSIMwith Airalo (opens in a new tab)
- Tickets & attractionsSkip-the-line tickets for museums and sights.See attractionswith Tiqets (opens in a new tab)