United Airlines UA4540 Flight status
According to Trip.com real-time data, the UA4540 flight operated by United Airlines on Sep 17, 2026, flying from Chattanooga (CHA) to Appleton (ATW), departed at 10:27 (local time in Chattanooga, UTC-4) and is expected to arrive at 14:33 (local time in Appleton, UTC-5) at Appleton International Airport (ATW).
Wed, Sep 16
Thu, Sep 17
Fri, Sep 18
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Arrived
The flight has arrived 20m early
2h 4m
Check-in Counter
--
Boarding Gate
3
Arrival Gate
F11
Baggage
2
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En route
Your flight has departed Chattanooga and is expected to arrive in Appleton at 14:33.
6h 43m
ORD
1h 54m
Check-in Counter
--
Boarding Gate
3
Arrival Gate
7
Baggage
1
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Scheduled
Your flight will depart on time.
6h 43m
ORD
3h 21m
Check-in Counter
--
Boarding Gate
--
Arrival Gate
7
Baggage
1
Information provided by VariFlight For real-time updates, please check airport displays or contact your airline.
Track the Previous Flight Status: Landed at Chattanooga
UA4563
|
Chicago (CHI) 
Chattanooga (CHA)
Chattanooga (CHA)Scheduled: 00:10
|
31m early
fake text
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UA4540 Aircraft Details
According to Trip.com real-time data, the UA4540 flight from Chattanooga to Appleton on 9/17/2026 is operated using the aircraft model Bombardier CRJ-550. This aircraft has been in service for 20y, 8m. The aircraft has 50 seats.
Bombardier CRJ-550
Punctuality (Departure)
100%
Punctuality (Arrival)
67%
Late on average
24 minutes
Age
20y, 8m
Seats
50
Flight Distance
--
Economy
First
Premium Economy
In-Flight Services
None
On-demand entertainment
Wi-Fi is available
USB port and power outlet
Seat Information
79 cm
Legroom
44 cm
Seat width
100°
Reclining Angle
--
Seat layout example
In-Flight Services
Snacks
On-demand entertainment
Wi-Fi is available
USB port and power outlet
Seat Information
94 cm
Legroom
51 cm
Seat width
120°
Reclining Angle
--
Seat layout example
In-Flight Services
Snacks
On-demand entertainment
Wi-Fi is available
USB port and power outlet
Seat Information
86 cm
Legroom
44 cm
Seat width
100°
Reclining Angle
--
Seat layout example
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Flight History for UA4540
Trip.com historical records show that the last UA4540 flight departed on Wed, Sep 16 from CHA at approximately 06:13. This flight is expected to arrrive in ORD at 06:44.
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Sun, Sep 13 | Chattanooga (CHA) | Appleton (ATW) | CRJ7 | 06:16 | 11:11 | Arrived |
| Mon, Sep 14 | Chattanooga (CHA) | Appleton (ATW) | CRJ7 | 06:19 | 11:26 | Arrived |
| Tue, Sep 15 | Chattanooga (CHA) | Chicago (ORD) | CRJ7 | 06:07 | 06:28 | Arrived |
| Wed, Sep 16 | Chattanooga (CHA) | Chicago (ORD) | CRJ7 | 06:13 | 06:44 | Arrived |
| Thu, Sep 17 | Chattanooga (CHA) | Appleton (ATW) | CRJ7 | 10:27 | 14:33 | En route |
| Fri, Sep 18 | Chattanooga (CHA) | Appleton (ATW) | CRJ7 | 06:00 | 11:43 | Scheduled |
| Sat, Sep 19 | Chattanooga (CHA) | Appleton (ATW) | CRJ7 | 06:00 | 11:43 | Scheduled |
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UA4540 On-Time Performance
Based on the average performance of this flight over the last 30 trips, the on-time departure rate of UA4540 is 100% (Late on average 15 minutes), and the on-time arrival rate is 67% (Late on average 24 minutes).
On-Time Departures
Punctuality
100%
Late on average 15 minutes
Early
0%
On time
100%
30 mins late
0%
60 mins late
0%
90 mins late
0%
Cancelled
0%
On-Time Arrivals
Punctuality
67%
Late on average 24 minutes
Early
67%
On time
0%
30 mins late
0%
60 mins late
0%
90 mins late
33%
Cancelled
0%
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Cheap return flights to Chattanooga
- Sat, Sep 19Appleton (ATW)Chattanooga (CHA)
American AirlinesOne way35% offRs 164,756Rs 106,542 - Thu, Sep 24Appleton (ATW)Chattanooga (CHA) American AirlinesOne way28% offRs 164,756Rs 118,624
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Flight FAQs
What is the current status of flight ua4540?
Flight ua4540 has departed (status: En route). Departure 10:27, estimated arrival 14:33 (updated Sep 17, 2026).Is flight ua4540 on time today?
Flight ua4540 has already departed (status: En route). It took off at 10:27 and is estimated to arrive at 14:33.Has flight ua4540 departed yet? What is the departure time?
Flight ua4540 is scheduled to depart at 06:00. The latest actual or estimated departure time is 10:27, and the current status is En route (updated Sep 17, 2026).When is flight ua4540 scheduled to arrive?
Flight ua4540 is scheduled to arrive at 11:43. The latest estimated or actual arrival time is 14:33. Status is En route as of Sep 17, 2026.What route does flight ua4540 fly?
Flight ua4540 is operated by United Airlines from Chattanooga (CHA) to Appleton (ATW). Typical flight time is about 6 hours 43 minutes; operating days may include Thursday.How can I check real-time status for flight ua4540?
Track flight ua4540 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 ua4540 is delayed or canceled, what should I do?
If ua4540 is delayed or canceled, first confirm the latest status here (En route, updated Sep 17, 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 ua4540 departed from Chattanooga?
Flight ua4540 has departed from Chattanooga (CHA) at 10:27 (status: En route).
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Arrival Info: Appleton Weather & Current Time
Mostly cloudy
|
14°C - 23°C
Weather forecast for your arrival day
-1 hour time difference
Time on arrival: Chattanooga 15:33| Appleton 14:33
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