UA423 United Airlines - Flight Status
Codeshare Flights
The flight AC4568 from Air Canada (AC) is a codeshare flight operated by United Airlines (UA) under the flight number UA423. Check this page for details about flight UA423.
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 Sunday, April 19, 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:
n/a
It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions. Flight Status
UA423 United Airlines to Chicago
En Route - On-time
Flight Status for Sunday April 19, 2026
En Route - On-time
Flight Status for Sunday April 19, 2026
Airline information
United Airlines
Equipment: Boeing 787-8
Departure
Athens (ATH)
April 19, 2026
Athens Eleftherios Venizelos International Airport
Departed at:
12:23
Gate:
A03
Scheduled Departure Time: 12:35
Arrival
Chicago (ORD)
April 19, 2026
Chicago O'Hare International Airport
Estimated Arrival Time:
15:54
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 Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday on a weekly basis.
Which is the distance of flight UA423?
The distance between the two airports is 8773 kilometers.
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: 2026-04-19 18:49:39
Current Time in Chicago: 2026-04-19 10:49:39
The flight UA423 is scheduled to flight on Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday on a weekly basis.
Which is the distance of flight UA423?
The distance between the two airports is 8773 kilometers.
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: 2026-04-19 18:49:39
Current Time in Chicago: 2026-04-19 10:49:39
Alternative Flights
United Airlines is the only airline operating the route from Athens to Chicago.
Punctuality and delays
It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.
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 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.
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 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.
Last Past Flights UA423
Date
Departure
Arrival
Duration
Aircraft
Status
Saturday
18 April
18 April
12:28
Athens (ATH)
Athens (ATH)
16:12
Chicago (ORD)
Chicago (ORD)
11h 44min
Boeing 787-8
Boeing 787-8
Landed - On-time
Friday
17 April
17 April
12:25
Athens (ATH)
Athens (ATH)
16:24
Chicago (ORD)
Chicago (ORD)
11h 59min
Boeing 787-8
Boeing 787-8
Landed - Delayed
Thursday
16 April
16 April
12:48
Athens (ATH)
Athens (ATH)
15:54
Chicago (ORD)
Chicago (ORD)
11h 06min
Boeing 787-8
Boeing 787-8
Landed - On-time
Wednesday
15 April
15 April
12:21
Athens (ATH)
Athens (ATH)
15:43
Chicago (ORD)
Chicago (ORD)
11h 22min
Boeing 787-8
Boeing 787-8
Landed - On-time
Tuesday
14 April
14 April
12:30
Athens (ATH)
Athens (ATH)
15:53
Chicago (ORD)
Chicago (ORD)
11h 23min
Boeing 787-8
Boeing 787-8
Landed - On-time