UA423 United Airlines - Flight Status
Below, you can find details about United Airlines flight UA423, which currently operates between the airports of Athens - Athens Eleftherios Venizelos International Airport (Airport Code ATH) and Chicago - Chicago O'Hare International Airport (Airport Code ORD).
This flight data pertains specifically to the flight's details for Thursday, September 25, 2025.
Table of contents:
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights UA423
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights UA423
UA423 On Time performance:
76
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
UA423 United Airlines to Chicago
We only provide flight information for yesterday, today and tomorrow. This flight is not scheduled for this interval of time.
We only provide flight information for yesterday, today and tomorrow. This flight is not scheduled for this interval of time.
Departure
Athens (ATH)
September 25, 2025
Athens Eleftherios Venizelos International Airport
Arrival
Chicago (ORD)
September 25, 2025
Chicago O'Hare 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.airport-athens.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:
- LH8842 - Lufthansa
Additional Information
Which is the frequency of flight UA423?
The flight UA423 is scheduled to flight on daily basis.
Which is the distance of flight UA423?
The distance between the two airports is 8773 kilometers.
Which is the flight time of flight UA423?
The scheduled flight time gate to gate is: 11:45 hours.
The real flight time gate to gate on average is: 11:31 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 Athens: 2025-10-16 03:53:31
Current Time in Chicago: 2025-10-15 19:53:31
The flight UA423 is scheduled to flight on daily basis.
Which is the distance of flight UA423?
The distance between the two airports is 8773 kilometers.
Which is the flight time of flight UA423?
The scheduled flight time gate to gate is: 11:45 hours.
The real flight time gate to gate on average is: 11:31 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 Athens: 2025-10-16 03:53:31
Current Time in Chicago: 2025-10-15 19:53:31
Alternative Flights
The following airline serve the same route between Athens and Chicago:
American Airlines - Flight Number: AA161. (On Time performance: 77 - Average Delay: 25 minutes)
American Airlines - Flight Number: AA161. (On Time performance: 77 - Average Delay: 25 minutes)
Punctuality and delays
We have gathered data from recent months and present below an analysis of how timely the flights have been.
Delays analyzed by Weekday: We have gathered available data from last six months, spanning from May 02, 2025 to September 25, 2025. Next, you can observe the results broken down by day of the week: number of flights analyzed, on-time performance per day, and average delay per day.
Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from May 02, 2025 to September 25, 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.
In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from July 13, 2025 to September 25, 2025, we have obtained these figures.
Total number of flights: 75
On Time: 57 ( 76 % )
Moderate Delay: 2 ( 3 % )
Significant Delay: 6 ( 8 % )
Major Delay: 8 ( 11 % )
Canceled: 0 ( 0 % )
Diverted: 2 ( 3 % )
Average Delay: 18 minutes.
Total number of flights: 75
On Time: 57 ( 76 % )
Moderate Delay: 2 ( 3 % )
Significant Delay: 6 ( 8 % )
Major Delay: 8 ( 11 % )
Canceled: 0 ( 0 % )
Diverted: 2 ( 3 % )
Average Delay: 18 minutes.
Last Past Flights UA423
Date
Departure
Arrival
Duration
Aircraft
Status
Thursday
25 September
25 September
12:33
Athens (ATH)
Athens (ATH)
15:58
Chicago (ORD)
Chicago (ORD)
11h 25min
Boeing 787-10
Boeing 787-10
Landed - On-time
Wednesday
24 September
24 September
12:32
Athens (ATH)
Athens (ATH)
15:59
Chicago (ORD)
Chicago (ORD)
11h 27min
Boeing 787-10
Boeing 787-10
Landed - On-time
Tuesday
23 September
23 September
12:26
Athens (ATH)
Athens (ATH)
15:04
Chicago (ORD)
Chicago (ORD)
10h 38min
Boeing 787-10
Boeing 787-10
Landed - On-time
Monday
22 September
22 September
15:52
Athens (ATH)
Athens (ATH)
18:36
Chicago (ORD)
Chicago (ORD)
10h 44min
Boeing 787-10
Boeing 787-10
Landed - Delayed
Sunday
21 September
21 September
13:08
Athens (ATH)
Athens (ATH)
17:07
Chicago (ORD)
Chicago (ORD)
11h 59min
Boeing 787-10
Boeing 787-10
Landed - Delayed
Saturday
20 September
20 September
12:47
Athens (ATH)
Athens (ATH)
16:11
Chicago (ORD)
Chicago (ORD)
11h 24min
Boeing 787-10
Boeing 787-10
Landed - On-time
Friday
19 September
19 September
13:14
Athens (ATH)
Athens (ATH)
16:52
Chicago (ORD)
Chicago (ORD)
11h 38min
Boeing 787-10
Boeing 787-10
Landed - Delayed
Thursday
18 September
18 September
12:38
Athens (ATH)
Athens (ATH)
16:02
Chicago (ORD)
Chicago (ORD)
11h 24min
Boeing 787-10
Boeing 787-10
Landed - On-time
Wednesday
17 September
17 September
14:31
Athens (ATH)
Athens (ATH)
17:57
Chicago (ORD)
Chicago (ORD)
11h 26min
Boeing 787-10
Boeing 787-10
Landed - Delayed