⚡ Fare recorded April 25, 2026 · Prices change daily

Chicago to London flights

Chicago (ORD) to London (LON): 3,942 miles (6,344 km) great-circle, about 8h 25m nonstop by our estimate. Cheapest fare observed: $795 round-trip on Air Canada, with 2 stops, departing May 29, 2026.

ACAir CanadaAC508
Depart
ORD
Chicago, USA
15:50
2026-05-29
✈
Arrive
LON
London, United Kingdom
Returns 14:00
2026-06-01
Stops
2 stops
Distance
3,942 mi
Est. nonstop time
8h 25m
Trip type
Round-trip
$795
Round-trip · per person
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About this flight

When did the cheapest Chicago to London fare fly?

$795 round-trip, Air Canada AC508, departing 2026-05-29 at 15:50, returning 2026-06-01. The recorded itinerary left on a Friday, returning on a Monday 3 nights later; the fare was observed 34 days before departure. "Book this flight" opens Kiwi.com with the same airline and dates.

Route facts

How far is Chicago from London?

  • Distance: 3,942 miles (6,344 km) great-circle, heading northeast (measured to London Heathrow Airport, LHR).
  • Estimated nonstop flight time: about 8h 25m.
  • Departure airport: Chicago O'Hare International Airport (ORD), Chicago, United States, UTC-5 on May 29, 2026.
  • Arrival: London (LON, all airports), United Kingdom, UTC+1 on May 29, 2026.
  • Time difference: London is 6 hours ahead of Chicago on the recorded date.
  • Route type: international, United States to United Kingdom.
  • Recorded itinerary: Air Canada AC508, 2 stops, round-trip, 3 days between departure and return.
Fare comparison

How does the Chicago to London fare compare with other routes from ORD?

At $795, it ranked 21st of the 30 round-trip fares we recorded from ORD (median $221). That is 20.2 cents per great-circle mile (round-trip price over one-way distance), above the ORD median of 16.6 cents across 30 round-trip routes.

Routes from ORD of similar length: Warsaw (4,672 mi) at $709 and Moscow (4,954 mi) at $1328.

ORD to LON is the only one of 30 ORD routes where Air Canada priced cheapest. It is the 11th longest of the 30 routes we track from ORD.

Other ways in

What did other cities pay to fly to London?

Of 49 departure airports with a fare to London, Chicago (ORD) ranked 31st at $795. Lowest: $46 from Dublin (DUB); highest: $1356 from Sydney (SYD); 14 nonstop. Cheapest-fare airlines (routes): Ryanair (7), easyJet (4), Etihad (4), Frontier (4), Air Canada (3) and WestJet (3), plus 19 more.

Entry requirements

Do you need a visa to fly to United Kingdom?

That depends on your passport and trip, so check the official source for United Kingdom: GOV.UK: check if you need a UK visa. Connecting elsewhere? Check that country's transit rules too.

Sources

Where do these numbers come from?

Travelpayouts fares (cheapest per route, observed April 25, 2026); OurAirports coordinates and elevations; IANA zones America/Chicago, Europe/London; flight time is our estimate.

FAQ

Chicago to London flight questions

How far is Chicago from London by plane?

+
Chicago is about 3,942 miles (6,344 km) from London on a great-circle line from Chicago O'Hare International Airport (ORD) to London Heathrow Airport (LHR), heading northeast. LON is the city code that covers every commercial airport in London; distances on this page are measured to London Heathrow Airport (LHR). It is the 11th longest of the 30 routes we track from ORD. The recorded itinerary had 2 stops, so the distance flown was longer.

How long is the flight from Chicago to London?

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About 8h 25m nonstop by our estimate for 3,942 miles (500 mph cruise plus 30 minutes, not a timetable). The recorded Air Canada fare was with 2 stops. 49 airports in our feed had a fare to London; this one ranked 31st, and 14 of the 49 were nonstop.

What is the time difference between Chicago and London?

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On May 29, 2026, Chicago was on UTC-5 (America/Chicago) and London on UTC+1 (Europe/London), so London was 6 hours ahead of Chicago: noon in Chicago was 18:00 in London. Both zones shift for daylight saving together, so the gap stays the same in January and July.

How much is a flight from Chicago to London?

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As observed on April 25, 2026: $795 per person round-trip on Air Canada flight AC508, departing May 29, 2026, returning June 1, 2026, with 2 stops. At $795, it ranked 21st of the 30 round-trip fares we recorded from ORD (median $221). That is 20.2 cents per great-circle mile (round-trip price over one-way distance), above the ORD median of 16.6 cents across 30 round-trip routes. Prices change daily, so check the live fare.

Is there a nonstop flight from Chicago to London?

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The cheapest recorded fare had 2 stops; our feed keeps only the cheapest fare per route, so a pricier nonstop may exist. Into London, 14 of the 49 recorded fares were nonstop. From ORD, 12 of 30 were. Routes from ORD of similar length: Warsaw (4,672 mi) at $709 and Moscow (4,954 mi) at $1328.

Which airports serve flights from Chicago to London?

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It departs Chicago O'Hare International Airport (ORD) in Chicago, United States, and arrives at London (LON) in London, United Kingdom. LON is the city code that covers every commercial airport in London; distances on this page are measured to London Heathrow Airport (LHR). An international flight, United States to United Kingdom.

Where else near London can you fly from Chicago?

Warsaw (WAW) $709Skopje (SKP) $834Istanbul (IST) $815Moscow (MOW) $1328Tbilisi (TBS) $1153Lagos (LOS) $1336All flights from Chicago →

Other cities with flights to London

From Dublin (DUB) $46From Oslo (OSL) $46From Copenhagen (CPH) $48From Krakow (KRK) $57From Stockholm (ARN) $68From Porto (OPO) $72

Ready to fly?

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