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
04:04 GMT+3
Timezone
Europe/Athens
Type
Large Airport
Elevation
308 ft
Coordinates
37.9364, 23.9445

cloud Weather

Wind
230° / 6 kt
Visibility
6 SM
Ceiling
FEW 2,000 ft, SCT 4,000 ft
Temp / Dew
15°C / 12°C
Altimeter
29.76 inHg

Obs: 2026-10-13T21:50:00.000Z

Raw METAR / TAF 
METAR LGAV 132150Z 23006KT 200V290 9999 FEW020 SCT040 15/12 Q1008 NOSIG RMK SCT080 SCT180

TAF LGAV 131700Z 1318/1418 04012KT 9999 SCT020 BKN070 TEMPO 1318/1418 4000 SHRA FEW018TCU BKN020 BKN070 PROB40 1318/1418 3000 TSRA FEW016CB BKN020 BKN070 TEMPO 1400/1418 04018G28KT

flight Live Traffic

flight_takeoff 4 Departures
flight_land 9 Arrivals

Arrival

ORD KORD VFR

Chicago O'Hare International Airport

Chicago, US

Local time
20:04 CDT
Timezone
America/Chicago
Type
Large Airport
Elevation
680 ft
Coordinates
41.9786, -87.9048

cloud Weather

Wind
230° / 5 kt
Visibility
10 SM
Ceiling
BKN 15,000 ft
Temp / Dew
25°C / 16°C
Altimeter
29.86 inHg

Obs: 2026-10-13T21:51:00.000Z

Raw METAR / TAF 
METAR KORD 132151Z 23005KT 10SM BKN150 25/16 A2986 RMK AO2 SLP106 T02500156 $

TAF KORD 132058Z 1321/1424 27009KT P6SM FEW025 SCT100 FM140100 02006KT P6SM SCT040 BKN090 PROB30 1402/1405 5SM -TSRA SCT025 BKN040CB FM140500 05006KT P6SM VCTS SCT030 OVC040CB TEMPO 1405/1409 3SM -TSRA BR SCT020 BKN030CB FM141000 03011KT P6SM SCT012 BKN020

flight Live Traffic

flight_takeoff 395 Departures
flight_land 480 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 A05646 YYZ → DEN Jul 26, 11:05 UTCJul 26, 21:30 UTC10h 25m - -
2026-07-25 A0A522 YYZ → DEN Jul 25, 10:05 UTCJul 25, 20:45 UTC10h 40m - -
2026-07-24 A11BC8 YYZ → DEN Jul 24, 10:55 UTCJul 24, 21:35 UTC10h 40m - -
2026-07-23 A05628 YYZ → DEN Jul 23, 09:55 UTCJul 23, 20:40 UTC10h 45m - -
2026-07-22 A05627 YYZ → DEN Jul 22, 11:10 UTCJul 22, 21:15 UTC10h 5m - -
2026-07-21 A0F427 YYZ → DEN Jul 21, 09:55 UTCJul 21, 20:31 UTC10h 36m +20m -3m
2026-07-21 A0F427 YYZ → DEN Jul 21, 09:55 UTCJul 21, 20:50 UTC10h 55m - -
2026-07-20 A05629 ATH → ORD Jul 20, 09:55 UTCJul 20, 20:23 UTC10h 28m +20m +8m
2026-07-20 A05629 - Jul 20, 09:50 UTCJul 20, 10:15 UTC25m - -
2026-07-19 A07DC8 - Jul 19, 20:40 UTCJul 19, 20:50 UTC10m - -
2026-07-19 A07DC8 ATH → ORD Jul 19, 09:55 UTCJul 19, 20:22 UTC10h 27m +20m +3m
2026-07-19 A07DC8 ATH → ORD Jul 19, 10:15 UTCJul 19, 20:50 UTC10h 35m - -
2026-07-18 A11BC6 - Jul 18, 20:55 UTCJul 18, 21:10 UTC15m - -
2026-07-18 A11BC6 ATH → ORD Jul 18, 10:20 UTCJul 18, 21:10 UTC10h 50m - -
2026-07-18 A11BC6 ATH → ORD Jul 18, 10:15 UTCJul 18, 20:40 UTC10h 25m +40m -4m
2026-07-17 AC9923 ATH → ORD Jul 17, 12:10 UTCJul 17, 22:35 UTC10h 25m - -
2026-07-16 A05648 ATH → ORD Jul 16, 10:15 UTCJul 16, 20:45 UTC10h 30m - -
2026-07-15 A0F428 ATH → ORD Jul 15, 10:00 UTCJul 15, 20:25 UTC10h 25m - -
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 - -

Performance history

Flights tracked
182 showing last 30
Avg arrival delay
+2m
On-time arrival
100% 100% on time
Aircraft used
16

Monthly activity 4 months

Month Flights tracked
July 2026 42
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 9h 15m 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 182 flights under this callsign.
Is flight UAL423 usually on time?
Across recent flights, UAL423 arrives with an average 2-minute delay. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL423?
UAL423 has been operated by 16 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.