Informational Guide to St. Louis Lambert Airport (STL) - NON OFFICIAL

DL566 Delta Air Lines - Flight Status

Below, you can find details about Delta Air Lines flight DL566, which currently operates between the airports of Atlanta - Atlanta Hartsfield-Jackson International Airport (Airport Code ATL) and Saint Louis - St Louis Lambert International Airport (Airport Code STL).
This flight data pertains specifically to the flight's details for Sunday, January 04, 2026.

DL566 On Time performance:
81
We have calculated the percentage of flights that arrived within 15 minutes of their scheduled time, or earlier, based on real flight data from the last 3 months. More about punctuality and delays

Flight Status

DL566 Delta Air Lines from Atlanta

This flight is not scheduled for January 14, 2026.

Airline information

Delta Air Lines
Delta Air Lines

Departure

Atlanta (ATL)
January 04, 2026
Atlanta Hartsfield-Jackson International Airport

Arrival

Saint Louis (STL)
January 04, 2026
St Louis Lambert International Airport
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.saint-louis-airport.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.

Codeshare Flights

This flight is shared with other airlines, this means that these other flights are the same:

- KE7035 - Korean Air

- LA7188 - LATAM Airlines

- WS6726 - WestJet

Additional Information

Which is the frequency of flight DL566?
The flight DL566 is scheduled to flight on daily basis.

Which is the distance of flight DL566?
The distance between the two airports is 484 miles.

Which is the flight time of flight DL566?
The scheduled flight time gate to gate is: 01:41 hours.
The real flight time gate to gate on average is: 01:37 hours.

Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in Atlanta: 2026-01-14 02:59:11
Current Time in Saint Louis: 2026-01-14 01:59:11

Alternative Flights

The following airlines serves the same route between Atlanta and Saint Louis:

Delta Air Lines
- Flight Number: DL1102. (On Time performance: 83 - Average Delay: 14 minutes)
- Flight Number: DL1339. (On Time performance: 88 - Average Delay: 11 minutes)
- Flight Number: DL1393. (On Time performance: 81 - Average Delay: 14 minutes)
- Flight Number: DL1400. (On Time performance: 67 - Average Delay: 32 minutes)
- Flight Number: DL1403. (On Time performance: 73 - Average Delay: 14 minutes)
- Flight Number: DL1485. (On Time performance: 91 - Average Delay: 9 minutes)
- Flight Number: DL1571. (On Time performance: 87 - Average Delay: 9 minutes)
- Flight Number: DL1703. (On Time performance: 87 - Average Delay: 13 minutes)
- Flight Number: DL2833. (On Time performance: 76 - Average Delay: 16 minutes)
- Flight Number: DL3156. (On Time performance: 76 - Average Delay: 14 minutes)

Frontier Airlines
- Flight Number: F94473. (On Time performance: 62 - Average Delay: 19 minutes)

Southwest Airlines
- Flight Number: WN1253. (On Time performance: 61 - Average Delay: 30 minutes)
- Flight Number: WN2290. (On Time performance: 88 - Average Delay: 4 minutes)
- Flight Number: WN247. (On Time performance: 100 - Average Delay: 0 minutes)
- Flight Number: WN250.
- Flight Number: WN3793. (On Time performance: 60 - Average Delay: 13 minutes)
- Flight Number: WN4179. (On Time performance: 85 - Average Delay: 5 minutes)
- Flight Number: WN449. (On Time performance: 95 - Average Delay: 5 minutes)
- Flight Number: WN457. (On Time performance: 77 - Average Delay: 20 minutes)

Punctuality and delays

We have gathered data from recent months and present below an analysis of how timely the flights have been.

In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from December 20, 2025 to January 04, 2026, we have obtained these figures.
Total number of flights: 16
On Time: 13 ( 81 % )
Moderate Delay: 2 ( 13 % )
Significant Delay: 1 ( 6 % )
Major Delay: 0 ( 0 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )

Average Delay: 6 minutes.
Delays analyzed by Week: It is not possible to calculate the On-Time Performance for this flight accurately by weekday due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from January 02, 2025 to December 31, 2025. Next, you can observe the results broken down by month: number of flights analyzed, on-time performance per month, and average delay per month.

Last Past Flights DL566

Date
Departure
Arrival
Duration
Aircraft
Status
Sunday
04 January
12:20 pm
Atlanta (ATL)
01:01 pm
Saint Louis (STL)
01h 41min
Boeing 737-800
Boeing 737-800
Landed - Delayed
Saturday
03 January
11:08 am
Atlanta (ATL)
11:40 am
Saint Louis (STL)
01h 32min
Boeing 717-200
Boeing 717-200
Landed - On-time
Friday
02 January
11:39 am
Atlanta (ATL)
12:09 pm
Saint Louis (STL)
01h 30min
Boeing 737-800
Boeing 737-800
Landed - On-time
Thursday
01 January
11:40 am
Atlanta (ATL)
12:29 pm
Saint Louis (STL)
01h 49min
Boeing 717-200
Boeing 717-200
Landed - On-time
Wednesday
31 December
11:38 am
Atlanta (ATL)
12:11 pm
Saint Louis (STL)
01h 33min
Boeing 737-800
Boeing 737-800
Landed - On-time
Tuesday
30 December
11:41 am
Atlanta (ATL)
12:10 pm
Saint Louis (STL)
01h 29min
Boeing 737-900
Boeing 737-900
Landed - On-time
Monday
29 December
11:34 am
Atlanta (ATL)
12:14 pm
Saint Louis (STL)
01h 40min
Boeing 737-800
Boeing 737-800
Landed - On-time
Sunday
28 December
12:14 pm
Atlanta (ATL)
12:43 pm
Saint Louis (STL)
01h 29min
Boeing 737-900
Boeing 737-900
Landed - Delayed
Saturday
27 December
11:10 am
Atlanta (ATL)
11:48 am
Saint Louis (STL)
01h 38min
Boeing 717-200
Boeing 717-200
Landed - On-time
Friday
26 December
11:41 am
Atlanta (ATL)
12:13 pm
Saint Louis (STL)
01h 32min
Boeing 737-800
Boeing 737-800
Landed - On-time