United Airlines UA540 Flight Status
Based on Trip.com’s real-time data, the UA540 flight operated by United Airlines on Oct 23, 2026 is scheduled to fly from San Francisco (SFO) to Chicago (ORD). The flight is expected to depart at 12:35 (local time in San Francisco, UTC-7) and land at 04:33 (local time in Chicago, UTC-5) .
Thu, Oct 22
Fri, Oct 23
Sat, Oct 24
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En route
Your flight has departed San Francisco and is expected to arrive in Chicago at 04:33.
13h 58m
DEN
3h 1m
SAN
2h 24m
Check-in Counter
--
Boarding Gate
F21
Arrival Gate
B5
Baggage
3
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Scheduled
Your flight will depart on time.
13h 58m
DEN
3h 26m
SAN
2h 24m
Check-in Counter
--
Boarding Gate
F20
Arrival Gate
C21
Baggage
14
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Scheduled
Your flight will depart on time.
13h 58m
DEN
2h 50m
SAN
1h 51m
Check-in Counter
--
Boarding Gate
--
Arrival Gate
--
Baggage
--
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United Airlines From VND 4,415,000
Search flights Information provided by VariFlight For the latest updates, please refer to airport announcements or consult your airline. You can also explore more flights from San Francisco to Chicago or track other flights with our flight status tracker.
Track the Previous Flight Status: Scheduled
UA1506
|
Denver (DEN)
Washington D.C. (WAS)
Washington D.C. (WAS)
Scheduled: 00:41
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UA540 Aircraft Details
According to Trip.com real-time data, the UA540 flight flying from San Francisco to Chicago on 10/23/2026 is operated by the aircraft model Airbus A321neo. This aircraft has been in service for 7y, 10m. The aircraft is equipped with 179 seats.
Airbus A321neo
Punctuality (Departure)
37
%
Punctuality (Arrival)
93
%
Late on average
10 minutes
Age
7y, 10m
Seats
179
Distance
--
Economy
First
Premium Economy
Onboard Amenities
None
Entertainment available, please bring your own device
Wi-Fi is available
Power outlet
Seating Plan
--
Legroom
--
Seat width
100°
Reclining Angle
--
Seat layout example
Onboard Amenities
Meal included
Entertainment available, please bring your own device
Wi-Fi is available
Power outlet
Seating Plan
94 cm
More legroom than on 17% of flights
51 cm
Seat width
120°
Reclining Angle
--
Seat layout example
Onboard Amenities
None
Entertainment available, please bring your own device
Wi-Fi is available
Power outlet
Seating Plan
--
Legroom
--
Seat width
105°
Reclining Angle
--
Seat layout example
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Flight History for UA540
Trip.com historical records show that the last UA540 flight departed on Thu, Oct 22 from SFO at approximately 13:00. This flight is expected to arrrive in ORD at 04:33.
| Date | Airport | Aircraft Type | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Sun, Oct 18 | San Francisco (SFO) | Chicago (ORD) | B39M | 14:47 | 04:18 | Arrived |
| Mon, Oct 19 | San Francisco (SFO) | Chicago (ORD) | A21N | 13:48 | 04:17 | Arrived |
| Tue, Oct 20 | San Francisco (SFO) | Chicago (ORD) | A21N | 13:05 | 04:05 | Arrived |
| Wed, Oct 21 | San Francisco (SFO) | Chicago (ORD) | B39M | 12:58 | 04:07 | Arrived |
| Thu, Oct 22 | San Francisco (SFO) | Chicago (ORD) | A21N | 13:00 | 04:33 | En route |
| Fri, Oct 23 | San Francisco (SFO) | Chicago (ORD) | B39M | 12:35 | 04:33 | Scheduled |
| Sat, Oct 24 | San Francisco (SFO) | Chicago (ORD) | B39M | 12:35 | 04:33 | Scheduled |
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UA540 On-Time Performance
Based on the average performance of this flight over the past 30 trips, the on-time departure rate of UA540 is 37% (Late on average 41 minutes), and the on-time arrival rate is 93% (Late on average 10 minutes).
On-Time Departures
Punctuality
37
%
Late on average
41 minutes
Early
0
%
On time
37
%
30 mins late
44
%
60 mins late
15
%
90 mins late
4
%
Cancelled
0
%
On-Time Arrivals
Punctuality
93
%
Late on average
10 minutes
Early
89
%
On time
4
%
30 mins late
0
%
60 mins late
0
%
90 mins late
7
%
Cancelled
0
%
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Frequently Asked Questions
What is the current status of flight ua540?
Flight ua540 has not departed yet and is currently on schedule. Scheduled departure 12:35, arrival 04:33 (updated Oct 23, 2026).Is flight ua540 on time today?
Flight ua540 has not departed yet and is currently on schedule. Scheduled departure is 12:35, with arrival at 04:33. Recheck gate and timing before you head to the airport.Has flight ua540 departed yet? What is the departure time?
Flight ua540 is scheduled to depart at 12:35. The latest actual or estimated departure time is 12:35, and the current status is Scheduled (updated Oct 23, 2026).When is flight ua540 scheduled to arrive?
Flight ua540 is scheduled to arrive at 04:33. The latest estimated or actual arrival time is 04:33. Status is Scheduled as of Oct 23, 2026.What is the gate information for flight ua540?
For flight ua540, the departure terminal is T3 and the boarding gate is F20. Gate assignments can change at short notice—confirm on airport screens before heading to security.What is the baggage carousel number for flight ua540?
After arrival, baggage for flight ua540 is expected at carousel 14 in terminal T1. Carousel numbers are assigned close to landing and may change—follow airport signs on arrival.What route does flight ua540 fly?
Flight ua540 is operated by United Airlines from San Francisco (SFO) to Chicago (ORD). Typical flight time is about 13 hours58 minutes; operating days may include Friday.How can I check real-time status for flight ua540?
Track flight ua540 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 ua540 is delayed or canceled, what should I do?
If ua540 is delayed or canceled, first confirm the latest status here (Scheduled, updated Oct 23, 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 ua540 departed from San Francisco?
Flight ua540 has not departed from San Francisco (SFO) yet and is currently on schedule for 12:35.
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Destination Info: Chicago Weather & Time
Mostly clear
|
11°C - 20°C
Expected weather conditions upon arrival
2 hour time difference
Time on arrival: San Francisco 02:33
|
Chicago 04:33
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