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 Monday, May 04, 2026.
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:
95
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
En Route - On-time
Flight Status for Monday May 04, 2026
En Route - On-time
Flight Status for Monday May 04, 2026
Airline information
United Airlines
Equipment: Boeing 787-10
Departure
Athens (ATH)
May 04, 2026
Athens Eleftherios Venizelos International Airport
Departed at:
12:32
Gate:
A09
Scheduled Departure Time: 12:35
Arrival
Chicago (ORD)
May 04, 2026
Chicago O'Hare International Airport
Estimated Arrival Time:
15:55
Terminal:
5
Gate:
INTL
Scheduled Arrival Time: 16:05
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:
- AC4568 - Air Canada
- 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: 11:30 hours.
The real flight time gate to gate on average is: 11:16 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: 2026-05-04 23:10:20
Current Time in Chicago: 2026-05-04 15:10:20
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: 11:30 hours.
The real flight time gate to gate on average is: 11:16 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: 2026-05-04 23:10:20
Current Time in Chicago: 2026-05-04 15:10:20
Alternative Flights
United Airlines is the only airline operating the route from Athens to Chicago.
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 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 May 02, 2025 to April 30, 2026. 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 April 14, 2026 to May 02, 2026, we have obtained these figures.
Total number of flights: 19
On Time: 18 ( 95 % )
Moderate Delay: 1 ( 5 % )
Significant Delay: 0 ( 0 % )
Major Delay: 0 ( 0 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 2 minutes.
Total number of flights: 19
On Time: 18 ( 95 % )
Moderate Delay: 1 ( 5 % )
Significant Delay: 0 ( 0 % )
Major Delay: 0 ( 0 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )
Average Delay: 2 minutes.
Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from May 02, 2025 to April 30, 2026. 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 UA423
Date
Departure
Arrival
Duration
Aircraft
Status
Sunday
03 May
03 May
13:04
Athens (ATH)
Athens (ATH)
16:02
Chicago (ORD)
Chicago (ORD)
10h 58min
Boeing 787-10
Boeing 787-10
Landed - On-time
Saturday
02 May
02 May
12:54
Athens (ATH)
Athens (ATH)
16:03
Chicago (ORD)
Chicago (ORD)
11h 09min
Boeing 787-10
Boeing 787-10
Landed - On-time
Friday
01 May
01 May
12:30
Athens (ATH)
Athens (ATH)
15:56
Chicago (ORD)
Chicago (ORD)
11h 26min
Boeing 787-10
Boeing 787-10
Landed - On-time
Thursday
30 April
30 April
12:31
Athens (ATH)
Athens (ATH)
16:09
Chicago (ORD)
Chicago (ORD)
11h 38min
Boeing 787-8
Boeing 787-8
Landed - On-time
Wednesday
29 April
29 April
12:24
Athens (ATH)
Athens (ATH)
15:40
Chicago (ORD)
Chicago (ORD)
11h 16min
Boeing 787-8
Boeing 787-8
Landed - On-time
Tuesday
28 April
28 April
12:19
Athens (ATH)
Athens (ATH)
15:48
Chicago (ORD)
Chicago (ORD)
11h 29min
Boeing 787-8
Boeing 787-8
Landed - On-time
Monday
27 April
27 April
12:27
Athens (ATH)
Athens (ATH)
15:54
Chicago (ORD)
Chicago (ORD)
11h 27min
Boeing 787-8
Boeing 787-8
Landed - On-time
Sunday
26 April
26 April
12:53
Athens (ATH)
Athens (ATH)
16:10
Chicago (ORD)
Chicago (ORD)
11h 17min
Boeing 787-8
Boeing 787-8
Landed - On-time
Saturday
25 April
25 April
12:40
Athens (ATH)
Athens (ATH)
15:35
Chicago (ORD)
Chicago (ORD)
10h 55min
Boeing 787-8
Boeing 787-8
Landed - On-time
Friday
24 April
24 April
12:28
Athens (ATH)
Athens (ATH)
15:10
Chicago (ORD)
Chicago (ORD)
10h 42min
Boeing 787-8
Boeing 787-8
Landed - On-time