How long does the flight from Chicago to London take?

Flight time from Chicago (ORD) to London (LHR) depends on routing, aircraft type, and whether the flight is direct or connecting. A direct flight typically reflects great-circle distance plus winds, while one-stop options can add several hours depending on the layover airport. Check the exact duration in the search results above, where we show block time per itinerary along with stop count.

Which airlines fly from Chicago to London?

Airline availability for ORD to LHR changes by season and sometimes week to week as carriers adjust capacity. Our search above pulls live schedules and returns the airlines currently selling this route, both direct and connecting. Codeshare and interline itineraries are included, so you may see results operated by one carrier but sold by another.

Are there direct flights from Chicago to London?

Direct (nonstop) availability on ORD to LHR varies by date, day of week, and season. Busy city pairs usually have multiple daily nonstops, while thinner routes may only have direct service a few days per week or only during peak seasons. Use our search above with flexible dates to see which days actually have nonstop options.

What is the cheapest month to fly from Chicago to London?

Prices on ORD to LHR shift with seasonality, school holidays, and major events at both ends. Our 12-month price calendar below the search results shows the lowest fare found per departure date, which makes it easy to spot the cheapest weeks at a glance. Flexibility of a few days around your target date often unlocks significantly lower fares.

Chicago to London flights

Direct and connecting flights from Chicago (ORD) to London (LHR). Compare airlines, aircraft, and fares.

Distance: 6,344 km (3,942 mi)
Flight time: ~7h 48m
Airlines: 3
Aircraft types: 4

Airlines flying ORD → LHR

Airline	Aircraft types	Observations
British Airways	2	2
American Airlines	1	1
United Airlines	1	1

Aircraft on this route

Boeing 777 — 1 operator
Boeing 787 — 1 operator
Boeing 767 — 1 operator
Boeing 787 — 1 operator

Airport details

Departure: Chicago O'Hare International Airport (ORD)

City: Chicago
Country: United States
IATA / ICAO: ORD / KORD

Arrival: London Heathrow Airport (LHR)

City: London
Country: United Kingdom
IATA / ICAO: LHR / EGLL

Operating airlines

American Airlines (AA)
British Airways (BA)
United Airlines (UA)

Distance: 6362 km. Duration: 475 minutes.

Other routes from Chicago

Other routes to London

Typical fares by aircraft on this route

Aircraft	Median	Range	Operators
Boeing 777 (all variants)	€498	€498–498	British Airways
Boeing 787 Dreamliner	€498	€498–498	British Airways
Boeing 787 Dreamliner	€498	€498–498	British Airways

Based on 9 recent fare observations.

Frequently asked questions

How many airlines fly ORD to LHR?

3 airlines operate the ORD to LHR route in our 90-day observed dataset.

What aircraft fly the ORD-LHR route?

The most commonly observed aircraft on ORD to LHR include: Boeing 777, Boeing 787, Boeing 767.

How long is the Chicago to London flight?

The estimated flight time from Chicago (ORD) to London (LHR) is approximately 7h 48m, based on a cruise speed of 850 km/h.

What's the distance from Chicago to London?

The great-circle distance from Chicago (ORD) to London (LHR) is approximately 6,344 km (3,942 miles).

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