How long is the BA1840 flight?

The timetable allows 1 h 23 min. Chicago to St. Louis is 415 km (258 mi).

Which terminal does BA1840 use?

It usually leaves from Terminal 3 at Chicago O'Hare International Airport (ORD) and arrives at Terminal 1 at St. Louis Lambert International Airport (STL). Check the flight card above for today's terminal and gate.

What other flight numbers does BA1840 have?

Also listed as BAW1840 (British Airways' ICAO code) and BA 1840.

BA1840 Flight Status British Airways: Chicago to St. Louis (BAW1840)

Are you looking for the November 9th, 2026 BA 1840 Baltimore to Charlotte flight? Go to our BA1840 Baltimore to Charlotte Flight Status page >

BA 1840 Chicago to St. Louis Flight Status

Not scheduled today (November 9th, 2026). Latest flight: April 5th, 2026 ; recent history is in the table below.

BA 1840 Flight Status & Schedule British Airways Chicago to St. Louis

Date	From	To	Departure	Arrival	Status	Details
Apr 05	ORD	STL	07:35	08:23	Landed	Track >
Mar 29	ORD	STL	07:38	08:27	Landed	Track >
Mar 22	ORD	STL	07:31	08:17	Landed	Track >
Mar 15	ORD	STL	07:36	08:28	Landed	Track >
Mar 08	ORD	STL	07:32	08:20	Landed	Track >

British Airways operates BA 1840 from Chicago to St. Louis, a 415 km (258 mi) trip. With 1 h 23 min in the timetable and a usual flight time of about 50 min, it often makes up time. It is not flying today; the last flight, on 5 April 2026, landed on time.

< All Chicago ORD Departures All St. Louis STL Arrivals >

About BA 1840

Route: Chicago O'Hare International Airport ORD to St. Louis Lambert International Airport STL
Distance: 415 km (258 mi)
Typical flight time: 50 min
On time: 5 of the last 5
Usually departs from: Terminal 3

BA 1840 FAQ

How long is the BA1840 flight?: The timetable allows 1 h 23 min. Chicago to St. Louis is 415 km (258 mi).
How often is BA1840 late?: None of the last 5 flights arrived 15 or more minutes late.
Which terminal does BA1840 use?: It usually leaves from Terminal 3 at Chicago O'Hare International Airport (ORD) and arrives at Terminal 1 at St. Louis Lambert International Airport (STL). Check the flight card above for today's terminal and gate.
What other flight numbers does BA1840 have?: Also listed as BAW1840 (British Airways' ICAO code) and BA 1840.

BA1840 and Chicago ORD to St. Louis STL Flights

Flight BA1840 is a code-share British Airways flight of the American Airlines operated AA3734.

Other flights departing from Chicago ORD: AA3734, AA4183

Other flights arriving at St. Louis STL: AA2475, DL3819, AA3734

All flights connecting Chicago ORD to St. Louis STL.