Chicago (ORD) → London (LHR)
About Chicago to London Flights
Discover the best flights from Chicago to London, covering 6,345 km in approximately 8h 26m. Chicago (ORD) to London (LHR) is one of the major long-haul routes connecting United States and United Kingdom. With 7 major airlines operating this route, travelers have plenty of options to choose from. Whether you're traveling for business or leisure, our comprehensive guide helps you find the best deals, understand seasonal price variations, and choose the right airline for your journey from Chicago to London.
12-Month Price History
Flight prices from Chicago to London vary significantly throughout the year. February typically offers the best deals with average prices around $1189, while July sees the highest prices, averaging $1984. Savvy travelers can save up to 40% by choosing their travel dates wisely.
Best Time to Fly
Cheapest Month
February
Save up to 40% on average
Most Expensive
July
Peak season pricing
Book in Advance
173 days
For best prices
Booking Tips
For the best prices on Chicago to London flights, we recommend booking 164 days in advance. International flights typically see price increases as the departure date approaches, so early booking is advisable. Tuesday and Wednesday departures often offer the lowest fares, while Friday and Sunday flights tend to be more expensive due to business and leisure travel demand. Consider flying early morning or late evening for additional savings, as these off-peak times usually have lower demand.
Airlines Serving This Route
| Airline | Economy | Business | First |
|---|---|---|---|
SkyWest Airlines OO | $1080 | $4160 | $7340 |
United Airlines UA | $1100 | $3790 | $6790 |
British Airways BA | $1130 | $4750 | $6470 |
Kalitta Air K4 | $1270 | $3880 | $7090 |
Delta Air Lines DL | $1280 | $4940 | $7300 |
American Airlines AA | $1310 | $4320 | $5880 |
Air France AF | $1410 | $4180 | $7770 |
SkyWest Airlines
OO
Economy
$1080
Business
$4160
First
$7340
United Airlines
UA
Economy
$1100
Business
$3790
First
$6790
British Airways
BA
Economy
$1130
Business
$4750
First
$6470
Kalitta Air
K4
Economy
$1270
Business
$3880
First
$7090
Delta Air Lines
DL
Economy
$1280
Business
$4940
First
$7300
American Airlines
AA
Economy
$1310
Business
$4320
First
$5880
Air France
AF
Economy
$1410
Business
$4180
First
$7770
Prices shown are estimates based on historical data. Actual prices may vary based on dates, availability, and current promotions.
Alternative Flight Options
Milwaukee → London
Milwaukee Mitchell International (MKE) to Heathrow (LHR)
Distance: 6,272 km
Average price: $1353
Chicago → London
Chicago Midway International (MDW) to Heathrow (LHR)
Distance: 6,349 km
Average price: $1368
Chicago → London
O'Hare International (ORD) to Gatwick (LGW)
Distance: 6,378 km
Average price: $1374
Chicago → Birmingham
O'Hare International (ORD) to Birmingham (BHX)
Distance: 6,216 km
Average price: $1342
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Frequently Asked Questions
How long is the flight from Chicago to London?
The flight time from Chicago (ORD) to London (LHR) is approximately 8 hours and 26 minutes. This duration is for direct flights and may vary depending on aircraft type, weather conditions, and air traffic.
What is the distance between Chicago and London?
The aerial distance between Chicago and London is 6,345 kilometers (3,943 miles). This is the straight-line distance, which is used to calculate flight times.
Which airlines fly from Chicago to London?
Several airlines operate flights between Chicago and London, including American Airlines, United Airlines, British Airways and 4 more airlines. Most flights on this route include one or more stops.
What is the cheapest month to fly from Chicago to London?
Based on historical data, February typically offers the lowest airfares for flights from Chicago to London. However, prices can vary based on holidays, events, and airline promotions. We recommend checking our price calendar for the most up-to-date information.
How far in advance should I book my flight to London?
For the best prices on Chicago to London flights, we recommend booking 88 days in advance. International flights generally require earlier booking than domestic routes.
Do I need a visa to travel from Chicago to London?
Visa requirements depend on your nationality and the purpose of your visit. Citizens of United States traveling to United Kingdom should check the latest visa requirements. Visit our partner site visarequirements.io for detailed visa information.
What is the time difference between Chicago and London?
Chicago operates on America/Chicago time zone, while London is in the Europe/London time zone. For current time differences and to plan your schedule, visit our partner site timezig.com for accurate timezone conversions.