Cheapest month: March 2027, tickets from $397. Prices come from searches over the last few days; check the search for your exact date.
The most expensive month is January 2027: from $939. The average across months is $496.
London to Chicago flight schedule
49 flights a week, 13 seasonal or one-off. Departure and arrival times are local.
FlightDepartsArrivesDurationDaysAircraft
UA 958
United Airlines
07:40London Heathrow, terminal 2
10:45, terminal 5
9h 5m
Tue, Wed, Thu, Fri, Sat, Sun
Boeing 767-300
UA 958
United Airlines
07:50London Heathrow, terminal 2
10:55, terminal 5
9h 5m
Mon
Boeing 767-300
UA 959
United Airlines
10:25London Heathrow, terminal 2
13:45, terminal 5
9h 20m
Daily
Boeing 767-300
BA 295
British Airways
11:00London Heathrow, terminal 5
13:45, terminal 5
8h 45m
Daily
Boeing 787
AA 87
American Airlines
12:35London Heathrow, terminal 3
15:30, terminal 5
8h 55m
Daily
Boeing 787-900
UA 928
United Airlines
13:35London Heathrow, terminal 2
16:55, terminal 5
9h 20m
Daily
Boeing 767-300
BA 297
British Airways
15:40London Heathrow, terminal 5
18:45, terminal 5
9h 5m
Daily
Boeing 787
AA 91
American Airlines
16:30London Heathrow, terminal 3
19:30, terminal 5
9h
Daily
Boeing 787-900
Seasonal and one-off flights
Not operating in the next two weeks. The first of them is on 2 December.
FlightDepartsArrivesDurationDaysAircraft
AA 91
American Airlines
16:20London Heathrow, terminal 3
19:25, terminal 5
9h 5m
Seasonal
Boeing 787-900
AA 91
American Airlines
12:35London Heathrow, terminal 3
15:35, terminal 5
9h
Seasonal
Boeing 787-900
AA 87
American Airlines
16:30London Heathrow, terminal 3
19:35, terminal 5
9h 5m
Seasonal
Boeing 787-900
AA 87
American Airlines
11:15London Heathrow, terminal 3
14:10, terminal 5
8h 55m
Seasonal
Boeing 787-900
UA 958
United Airlines
08:00London Heathrow, terminal 2
10:55, terminal 5
8h 55m
Seasonal
Boeing 767-300
AA 87
American Airlines
09:30London Heathrow, terminal 3
12:10, terminal 5
8h 40m
Seasonal
Boeing 787-900
UA 959
United Airlines
11:05London Heathrow, terminal 2
14:10, terminal 5
9h 5m
Seasonal
Boeing 767-300
BA 295
British Airways
11:10London Heathrow, terminal 5
13:50, terminal 5
8h 40m
Seasonal
Boeing 787
AA 55
American Airlines
12:30London Heathrow, terminal 3
15:15, terminal 5
8h 45m
Seasonal
Boeing 787-900
BA 299
British Airways
13:30London Heathrow, terminal 5
16:25, terminal 5
8h 55m
Seasonal
Boeing 787
UA 928
United Airlines
14:10London Heathrow, terminal 2
17:20, terminal 5
9h 10m
Seasonal
Boeing 767-300
AA 91
American Airlines
14:45London Heathrow, terminal 3
17:35, terminal 5
8h 50m
Seasonal
Boeing 787-900
BA 297
British Airways
16:05London Heathrow, terminal 5
18:59, terminal 5
8h 54m
Seasonal
Boeing 777
Days of the week are taken from the schedule for the next 14 days; schedules change by season. Chicago is 6 hours behind London. The search shows seat availability and the price for your date.
Airlines flying London to Chicago
Flights a week by schedule and the cheapest nonstop fare of each airline found by recent searches
Best time to visit: May, June, July, August, September and October, +18° to +27° by day. In November it is +10° by day and +2° at night, with 7 rainy days.
Jan
0°−7°10 days
Feb
+2°−6°7 days
Mar
+9°0°12 days
Apr
+14°+5°13 days
May
+19°+10°11 days
Jun
+27°+17°9 days
Jul
+27°+19°12 days
Aug
+27°+19°10 days
Sep
+24°+16°7 days
Oct
+18°+10°11 days
Nov
+10°+2°7 days
Dec
+4°−3°10 days
Daytime and night temperatures in °C, rainy days. Months with the most comfortable weather are in green. Long-term averages.
Frequently asked questions
How long is the flight from London to Chicago?
A nonstop flight takes 9 hours on average, from 8h 40m to 9h 20m depending on the flight.
How far is Chicago from London?
3,948 mi (6,353 km) in a straight line between the cities.
Which airlines fly nonstop from London to Chicago?
United Airlines (21 a week), American Airlines (14 a week) and British Airways (14 a week).
How many flights a day are there from London to Chicago?
There are 49 a week, about 7 a day on average.
When are the first and last flights from London to Chicago?
The first departure is at 07:40 (UA958), the last at 16:30 (AA91). Local time.
What is the cheapest month to fly from London to Chicago?
March 2027: tickets from $397. The most expensive is January 2027, from $939.
What is the cheapest upcoming date to fly from London to Chicago?
1 March 2027 (Monday): from $397 one way, with a connection, by recent searches. The search shows the price for your dates.
Which airline is the cheapest from London to Chicago?
United Airlines: nonstop tickets from $591 on 1 March by recent searches. Prices change daily, so compare the sellers in the search.
What is the time difference between London and Chicago?
Chicago is 6 hours behind London. Schedule times on this page are local to each airport.
Which London airport do flights to Chicago leave from?