Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL423

Operated by UAL

Live map

Live map filtered to UAL423. Shown when the flight is currently airborne.

Route airports View route page →

Departure

ATH LGAV VFR

Athens Eleftherios Venizelos International Airport

Spata-Artemida, GR

Local time
06:56 GMT+3
Timezone
Europe/Athens
Type
Large Airport
Elevation
308 ft
Coordinates
37.9364, 23.9445

cloud Weather

Wind
VRB / 3 kt
Visibility
6 SM
Ceiling
CAVOK
Temp / Dew
20°C / 10°C
Altimeter
30.00 inHg

Obs: 2026-07-15T03:20:00.000Z

Raw METAR / TAF 
METAR LGAV 150320Z VRB03KT CAVOK 20/10 Q1016 NOSIG

TAF LGAV 142300Z 1500/1524 35007KT 9999 FEW025 BECMG 1504/1506 04012KT TEMPO 1512/1515 04012G22KT

flight Live Traffic

flight_takeoff 3 Departures
flight_land 10 Arrivals

Arrival

ORD KORD VFR

Chicago O'Hare International Airport

Chicago, US

Local time
22:56 CDT
Timezone
America/Chicago
Type
Large Airport
Elevation
680 ft
Coordinates
41.9786, -87.9048

cloud Weather

Wind
250° / 4 kt
Visibility
10 SM
Ceiling
CLR
Temp / Dew
30°C / 23°C
Altimeter
30.11 inHg

Obs: 2026-07-15T02:51:00.000Z

Raw METAR / TAF 
METAR KORD 150251Z 25004KT 10SM CLR 30/23 A3011 RMK AO2 SLP188 T03000228 53004 $

TAF KORD 150247Z 1503/1606 25005KT P6SM SKC FM152100 09006KT P6SM FEW050 FEW250

flight Live Traffic

flight_takeoff 651 Departures
flight_land 475 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-14 A0A545 ATH → ORD Jul 14, 10:10 UTCJul 14, 20:50 UTC10h 40m - -
2026-07-13 A07DC8 ATH → ORD Jul 13, 11:05 UTCJul 13, 21:45 UTC10h 40m - -
2026-07-12 A11BA0 ATH → ORD Jul 12, 10:05 UTCJul 12, 20:40 UTC10h 35m - -
2026-07-11 A07DCD ATH → ORD Jul 11, 10:10 UTCJul 11, 20:35 UTC10h 25m - -
2026-07-10 A05627 ATH → ORD Jul 10, 10:05 UTCJul 10, 20:45 UTC10h 40m - -
2026-07-09 A07DC9 ATH → ORD Jul 9, 10:00 UTCJul 9, 20:40 UTC10h 40m - -
2026-07-09 A07DC9 ATH → ORD Jul 9, 10:00 UTCJul 9, 20:25 UTC10h 25m +25m +6m
2026-07-08 A11BA0 ATH → ORD Jul 8, 10:05 UTCJul 8, 21:00 UTC10h 55m - -
2026-07-07 A11BC6 - Jul 7, 10:10 UTCJul 7, 11:30 UTC1h 20m - -
2026-07-07 A11BC6 ATH → ORD Jul 7, 09:55 UTCJul 7, 20:34 UTC10h 39m +20m +10m
2026-07-06 A05629 ATH → ORD Jul 6, 11:00 UTCJul 6, 21:32 UTC10h 32m +85m -4m
2026-07-06 A05629 ATH → ORD Jul 6, 11:05 UTCJul 6, 21:50 UTC10h 45m - -
2026-07-05 A07DC8 ATH → ORD Jul 5, 09:55 UTCJul 5, 20:43 UTC10h 48m +20m +2m
2026-07-05 A07DC8 ATH → ORD Jul 5, 10:05 UTCJul 5, 21:00 UTC10h 55m - -
2026-07-04 A11BC8 - Jul 4, 23:55 UTCJul 5, 00:10 UTC15m - -
2026-07-04 A11BC8 - Jul 4, 13:15 UTCJul 4, 17:20 UTC4h 5m - -
2026-07-04 A11BC8 ATH → ORD Jul 4, 12:50 UTCJul 4, 23:40 UTC10h 50m +195m -8m
2026-07-04 A11BC8 ATH → ORD Jul 4, 12:50 UTCJul 5, 00:00 UTC11h 10m +195m +12m
2026-07-03 A05646 ATH → ORD Jul 3, 11:15 UTCJul 3, 22:00 UTC10h 45m - -
2026-07-02 A05629 ATH → ORD Jul 2, 10:10 UTCJul 2, 20:43 UTC10h 33m +35m -4m
2026-07-02 A05629 ATH → ORD Jul 2, 10:10 UTCJul 2, 21:05 UTC10h 55m - -
2026-07-01 A05648 ORD → ORD Jul 1, 20:40 UTCJul 1, 20:45 UTC5m - -
2026-07-01 A05648 ATH → ORD Jul 1, 10:00 UTCJul 1, 20:24 UTC10h 24m +25m +2m
2026-07-01 A05648 ATH → ORD Jul 1, 10:05 UTCJul 1, 20:45 UTC10h 40m - -
2026-06-30 A05628 - Jun 30, 21:30 UTCJun 30, 21:40 UTC10m - -
2026-06-30 A05628 ATH → ORD Jun 30, 11:05 UTCJun 30, 21:40 UTC10h 35m - -
2026-06-30 A05628 ATH → ORD Jun 30, 11:00 UTCJun 30, 21:14 UTC10h 14m +85m +3m
2026-06-29 A0566A ATH → ORD Jun 29, 09:55 UTCJun 29, 19:46 UTC9h 51m +20m -14m
2026-06-29 A0566A - Jun 29, 09:50 UTCJun 29, 14:50 UTC5h 0m - -
2026-06-28 A05626 ATH → ORD Jun 28, 10:04 UTCJun 28, 20:14 UTC10h 10m - -

Performance history

Flights tracked
164 showing last 30
Avg arrival delay
+1m
On-time arrival
100% 100% on time
Aircraft used
14

Monthly activity 4 months

Month Flights tracked
July 2026 24
June 2026 51
May 2026 50
April 2026 39

UAL423 frequently asked

Where does flight UAL423 fly?
UAL423 (UAL) flies from ATH to ORD. View the full route page.
How long is flight UAL423?
Based on observed flights, UAL423 takes on average 8h 51m from takeoff to landing.
How often does UAL423 fly?
UAL423 has been observed flying several times a week in our tracking data. We've recorded 164 flights under this callsign.
Is flight UAL423 usually on time?
Across recent flights, UAL423 arrives with an average 1-minute delay. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL423?
UAL423 has been operated by 14 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL423 live?
Yes. When UAL423 is currently airborne, the live tracker map above shows its real-time position from ADS-B broadcasts. If the map is empty, the flight is not currently in the air.