| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jul 08 | ATH | ORD | 13:03 | 15:35 |
En-Route
|
Track > |
| Jul 07 | ATH | ORD | 13:09 | 15:27 |
Landed
|
Track > |
| Jul 06 | ATH | ORD | 14:03 | 16:45 |
Landed Late
|
Track > |
| Jul 05 | ATH | ORD | 13:03 | 15:56 |
Landed
|
Track > |
| Jul 04 | ATH | ORD | 16:10 | 18:47 |
Delayed
|
Track > |
| Jul 03 | ATH | ORD | 14:15 | 16:52 |
Landed Late
|
Track > |
| Jul 02 | ATH | ORD | 13:09 | 15:56 |
Landed
|
Track > |
| Jul 01 | ATH | ORD | 13:01 | 15:38 |
Landed
|
Track > |
| Jun 30 | ATH | ORD | 14:01 | 16:33 |
Landed Late
|
Track > |
| Jun 29 | ATH | ORD | 12:48 | 15:02 |
Landed
|
Track > |
United Airlines Flight UA423 connects Athens, Greece to Chicago, United States, taking off from Athens Eleftherios Venizelos ATH and landing at Chicago O'Hare International Airport ORD.
How long is the UA423 flight from Athens to Chicago?
The average flight time from Athens to Chicago is 10 hours and 34 minutes. The flight distance is 8770 km / 5449 miles and the average flight speed is 829 km/h / 515 mph.
How many UA423 flights are operated per week?
7 flights per week. The flight UA423 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday.
What is the On-Time Performance (OTP) of United Airlines Flight UA423 Athens to Chicago?
The Airportia On-Time Performance Rating for United Airlines Flight UA423 is 4.6/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA423 arriving at?
Flight UA423 arrives at Chicago O'Hare International Airport (ORD) Terminal 5.
When was the latest UA423 flight?
The latest flight took off on Wednesday, July 8th, 2026 with the flight status being En-Route on 15:35.
How else can the flight UA423 be referenced as?
This United Airlines flight can also be referenced as UAL423, UA0423, UA 423, UAL 423.
How often is flight UA423 delayed?
On average, 40% of all UA423 flights are delayed. The average delay is 59 minutes.
Can I get compensation for my delayed or cancelled UA423 flight or baggage issues?
If your UA423 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our UA423 Flight Tracker above for more details.
Flight UA423 is code-shared by 2 airlines using the flight numbers AC4568, LH8842
Other flights departing from Athens ATH: SN3246, V71627, LH1751, OA92
Other flights arriving at Chicago ORD: RJ263, SK943, AA151, UA770
All flights connecting Athens ATH to Chicago ORD.
