United Airlines
UA423 Flight Status
According to Trip.com real-time data, the UA423 flight operated by United Airlines on Sep 11, 2026, flying from Athens (ATH) to Chicago (ORD), departed at 1:28 PM and is expected to arrive at 4:05 PM (local time in Chicago, UTC-5) and land at O'Hare Intl. Airport (ORD).
Thu, Sep 10
Fri, Sep 11
Sat, Sep 12
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Arrived
The flight has arrived 15m early
11h 25m
Check-in Counter
144-150
Boarding Gate
A3
Arrival Gate
M21
Baggage
M5
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En route
Your flight has departed Athens and is expected to arrive in Chicago at 4:05 PM.
11h 25m
Check-in Counter
144-150
Boarding Gate
A3
Arrival Gate
INTL
Baggage
7
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Scheduled
Your flight will depart on time.
11h 25m
Check-in Counter
144-150
Boarding Gate
A
Arrival Gate
INTL
Baggage
7
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Information provided by VariFlight
For real-time updates, please check airport displays or contact your airline.
You can also explore more flights from Athens to Chicago or track other flights with our flight status tracker.
Track the Previous Flight Status: Scheduled
UA422
|
Chicago (CHI)
Athens (ATH)
Athens (ATH)
Scheduled: 10:35 AM
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UA423 Aircraft Details
According to Trip.com real-time data, the UA423 flight flying from Athens to Chicago on 9/11/2026 is operated by the aircraft model Boeing 787-10. This aircraft has been in service for 6y, 10m. The aircraft is equipped with 318 seats.
Boeing 787-10
Punctuality (Departure)
33
%
Punctuality (Arrival)
87
%
Early on average
10 minutes
Age
6y, 10m
Seats
318
Flight Distance
--
Economy
Business
First
Premium Economy
In-Flight Services
Meal included
Seatback entertainment system
Wi-Fi (additional charge)
USB port and power outlet
Seat Information
79 cm
Legroom
44 cm
Seat width better than on 50% of flights
100°
Reclining Angle
3-3-3
Seat layout example
In-Flight Services
Meal included
Seatback entertainment system
Wi-Fi (additional charge)
USB port and power outlet
Seat Information
97 cm
Legroom
48 cm
Seat width
140°
Reclining Angle
1-2-1
Seat layout example
In-Flight Services
Meal included
On-demand entertainment
Wi-Fi is available
USB port and power outlet
Seat Information
198 cm
Legroom
52 cm
Seat width
180°
Reclining Angle
Fully reclinable
--
Seat layout example
In-Flight Services
Meal included
Seatback entertainment system
Wi-Fi (additional charge)
USB port and power outlet
Seat Information
86 cm
Legroom
44 cm
Seat width better than on 50% of flights
120°
Reclining Angle
2-3-2
Seat layout example
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Flight History for UA423
Trip.com historical records show that the last UA423 flight departed on Thu, Sep 10 from ATH at approximately 1:15 PM. This flight is expected to arrrive in ORD at 3:45 PM.
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Mon, Sep 7 | Athens (ATH) | Chicago (ORD) | B78X | 1:38 PM | 4:11 PM | Arrived |
| Tue, Sep 8 | Athens (ATH) | Chicago (ORD) | B78X | 1:04 PM | 3:38 PM | Arrived |
| Wed, Sep 9 | Athens (ATH) | Chicago (ORD) | B78X | 3:51 PM | 6:53 PM | Arrived |
| Thu, Sep 10 | Athens (ATH) | Chicago (ORD) | B78X | 1:15 PM | 3:45 PM | Arrived |
| Fri, Sep 11 | Athens (ATH) | Chicago (ORD) | B78X | 1:28 PM | 4:05 PM | En route |
| Sat, Sep 12 | Athens (ATH) | Chicago (ORD) | B78X | 12:35 PM | 4:00 PM | Scheduled |
| Sun, Sep 13 | Athens (ATH) | Chicago (ORD) | B78X | 12:35 PM | 4:00 PM | Scheduled |
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UA423 On-Time Performance
Based on the average performance of this flight over the past 30 trips, the on-time departure rate of UA423 is 33% (Late on average 45 minutes), and the on-time arrival rate is 87% (Early on average 10 minutes).
On-Time Departures
Punctuality
33
%
Late on average
45 minutes
Early
0
%
On time
33
%
30 mins late
53
%
60 mins late
7
%
90 mins late
7
%
Canceled
0
%
On-Time Arrivals
Punctuality
87
%
Early on average
10 minutes
Early
83
%
On time
3
%
30 mins late
7
%
60 mins late
3
%
90 mins late
3
%
Canceled
0
%
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Frequently Asked Questions
-
What is the current status of flight ua423?
Flight ua423 has departed (status: En route). Departure 1:28 PM, estimated arrival 4:05 PM (updated Sep 11, 2026). -
Is flight ua423 on time today?
Flight ua423 has already departed (status: En route). It took off at 1:28 PM and is estimated to arrive at 4:05 PM. -
Has flight ua423 departed yet? What is the departure time?
Flight ua423 is scheduled to depart at 12:35 PM. The latest actual or estimated departure time is 1:28 PM, and the current status is En route (updated Sep 11, 2026). -
When is flight ua423 scheduled to arrive?
Flight ua423 is scheduled to arrive at 4:00 PM. The latest estimated or actual arrival time is 4:05 PM. Status is En route as of Sep 11, 2026. -
What is the baggage carousel number for flight ua423?
After arrival, baggage for flight ua423 is expected at carousel 7 in terminal T5. Carousel numbers are assigned close to landing and may change—follow airport signs on arrival. -
What route does flight ua423 fly?
Flight ua423 is operated by United Airlines from Athens (ATH) to Chicago (ORD). Typical flight time is about 11 hours25 minutes; operating days may include Friday. -
How can I check real-time status for flight ua423?
Track flight ua423 on this Trip.com status page for live departure, arrival, gate and baggage updates. For push alerts on the go, open the same flight in the Trip.com App and turn on flight notifications. -
If flight ua423 is delayed or canceled, what should I do?
If ua423 is delayed or canceled, first confirm the latest status here (En route, updated Sep 11, 2026). Contact United Airlines or your booking channel for rebooking or refund options, and check Trip.com Manage Booking if you booked on Trip.com. -
Has flight ua423 departed from Athens?
Flight ua423 has departed from Athens (ATH) at 1:28 PM (status: En route). -
What is the seat configuration for flight ua423?
Flight ua423 usually flies a Boeing 787-10 with seat layout 3-3-3. Layouts can differ by aircraft subtype and cabin product—confirm your seat map in Manage Booking after you purchase.
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19°C - 24°C
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-8 hour time difference
Time on arrival: Athens 00:00
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