How long is the KL7521 flight?

The timetable allows 1 h 42 min. Atlanta to St. Louis is 779 km (484 mi).

Which terminal does KL7521 use?

It usually leaves from Terminal S at Atlanta Hartsfield-Jackson International Airport (ATL) 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 KL7521 have?

Also listed as KLM7521 (KLM's ICAO code) and KL 7521.

KL7521 Flight Status KLM: Atlanta to St. Louis (KLM7521)

KLM KL 7521

Scheduled in 1h50'

ATL Atlanta

Scheduled: 08:12
Estimated: 08:12

Terminal: S | Gate: B21

Departure: Mon, Nov 9, 2026 · local time EST

Atlanta Hartsfield-Jackson International Airport (ATL)

All ATL Departures >

STL St. Louis

Scheduled: 09:00
Estimated
Delay

Terminal: 1 | Gate: A10

Arrival: Mon, Nov 9, 2026 · local time CST

St. Louis Lambert International Airport (STL)

All STL Arrivals >

Departs in 1h 50m 0%

ATL 08:12 STL 09:00

779 km (484 mi) to fly

Estimated position based on departure and arrival times, not live tracking. Times are local at each airport.

Add to calendar

Distance: 779 km / 484 miles · Scheduled Duration: 01:48

KL 7521 Flight Status & Schedule KLM Atlanta to St. Louis

Date	From	To	Departure	Arrival	Status	Details
Nov 09	ATL	STL	08:12	09:00	Scheduled	Track >
Nov 07	ATL	STL	19:25	19:38	Landed	Track >
Oct 31	ATL	STL	17:31	17:48	Landed	Track >

KLM flight KL 7521 links Atlanta and St. Louis, 779 km (484 mi) apart, and flies twice a week: Monday and Saturday. The timetable allows 1 h 42 min; there is not enough recent history yet to say how long it usually takes. Today's flight is scheduled to leave at 08:12 and arrive at 09:00 local time.

< All Atlanta ATL Departures All St. Louis STL Arrivals >

About KL 7521

Route: Atlanta Hartsfield-Jackson International Airport ATL to St. Louis Lambert International Airport STL
Distance: 779 km (484 mi)
Scheduled flight time: 1 h 42 min
Flies: Mon, Sat
Usually departs from: Terminal S

KL 7521 FAQ

How long is the KL7521 flight?: The timetable allows 1 h 42 min. Atlanta to St. Louis is 779 km (484 mi).
Which days does KL7521 fly?: Twice a week: Monday and Saturday, based on the schedule of the last 7 days.
Which terminal does KL7521 use?: It usually leaves from Terminal S at Atlanta Hartsfield-Jackson International Airport (ATL) 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 KL7521 have?: Also listed as KLM7521 (KLM's ICAO code) and KL 7521.

KL7521 and Atlanta ATL to St. Louis STL Flights

Flight KL7521 is a code-share KLM flight of the Delta Air Lines operated DL1571.

Other flights departing from Atlanta ATL: DL2420, 9E4655, DL1571

Other flights arriving at St. Louis STL: WN2651, DL1571, WN4792

All flights connecting Atlanta ATL to St. Louis STL.