Apparatus

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flight_takeoff Flight

UAL540

Operated by UAL

Live map

Live map filtered to UAL540. Shown when the flight is currently airborne.

Upcoming flights 1 scheduled

From To Scheduled departure Estimated arrival Status
SFO DEN Jul 14, 08:05 PM UTC Jul 14, 10:29 PM UTC PLANNED

Route airports View route page →

Departure

SFO KSFO VFR

San Francisco International Airport

San Francisco, US

Local time
01:16 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
13 ft
Coordinates
37.6198, -122.3748

cloud Weather

Wind
290° / 6 kt
Visibility
10 SM
Ceiling
BKN 20,000 ft
Temp / Dew
16°C / 13°C
Altimeter
29.95 inHg

Obs: 2026-07-14T07:56:00.000Z

Raw METAR / TAF 
METAR KSFO 140756Z 29006KT 10SM BKN200 16/13 A2995 RMK AO2 SLP142 T01610128 402610156

TAF KSFO 140520Z 1406/1512 29010KT P6SM BKN200 FM141500 30005KT P6SM FEW010 BKN200 FM141900 31012KT P6SM BKN200 FM142100 31015G25KT P6SM BKN150 FM150400 29010KT P6SM FEW010 BKN150

flight Live Traffic

flight_takeoff 286 Departures
flight_land 150 Arrivals

Arrival

DEN KDEN VFR

Denver International Airport

Denver, US

Local time
02:16 MDT
Timezone
America/Denver
Type
Large Airport
Elevation
5,431 ft
Coordinates
39.8600, -104.6738

cloud Weather

Wind
160° / 19 kt
Visibility
10 SM
Ceiling
CLR
Temp / Dew
21°C / 11°C
Altimeter
30.22 inHg

Obs: 2026-07-14T07:53:00.000Z

Raw METAR / TAF 
METAR KDEN 140753Z 16019KT 10SM CLR 21/11 A3022 RMK AO2 PK WND 16035/0703 SLP136 T02110106

TAF KDEN 140659Z 1407/1512 15020G30KT P6SM SKC FM140900 17015G25KT P6SM SKC FM141100 19011KT P6SM SKC FM141300 23006KT P6SM SKC FM141500 VRB06KT P6SM FEW110 FM141700 10011KT P6SM FEW110 FM142100 13014G22KT P6SM FEW110 FM150400 16014G22KT P6SM FEW110

flight Live Traffic

flight_takeoff 143 Departures
flight_land 118 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-14 A24508 DEN → SAN Jul 14, 03:05 UTCJul 14, 05:00 UTC1h 55m - -
2026-07-13 A0B845 SFO → DEN Jul 13, 20:25 UTCJul 13, 22:25 UTC2h 0m - -
2026-07-13 A2452C DEN → SAN Jul 13, 02:30 UTCJul 13, 04:20 UTC1h 50m - -
2026-07-12 A0B845 SFO → DEN Jul 12, 20:20 UTCJul 12, 22:25 UTC2h 5m - -
2026-07-12 A0B7B8 DEN → SAN Jul 12, 02:01 UTCJul 12, 03:50 UTC1h 50m - -
2026-07-11 A0B848 - Jul 11, 20:20 UTCJul 11, 22:25 UTC2h 5m - -
2026-07-11 A0B848 SFO → DEN Jul 11, 20:05 UTCJul 11, 22:24 UTC2h 19m +22m -3m
2026-07-11 A0B886 DEN → SAN Jul 11, 02:35 UTCJul 11, 04:25 UTC1h 50m - -
2026-07-10 A0B844 SFO → DEN Jul 10, 20:15 UTCJul 10, 22:20 UTC2h 5m - -
2026-07-10 A24508 DEN → SAN Jul 10, 02:00 UTCJul 10, 03:55 UTC1h 55m - -
2026-07-09 A0B81E - Jul 9, 20:45 UTCJul 9, 23:10 UTC2h 25m - -
2026-07-09 A0B7D8 - Jul 9, 02:25 UTCJul 9, 04:20 UTC1h 55m - -
2026-07-08 A0B7FA SFO → DEN Jul 8, 20:40 UTCJul 8, 22:55 UTC2h 15m - -
2026-07-08 A55FA2 DEN → SAN Jul 8, 03:05 UTCJul 8, 05:00 UTC1h 55m - -
2026-07-07 A0B7BB - Jul 7, 20:25 UTCJul 7, 23:00 UTC2h 35m - -
2026-07-07 A0B844 DEN → SAN Jul 7, 01:50 UTCJul 7, 03:50 UTC2h 0m - -
2026-07-06 A0B7D9 OAK → DEN Jul 6, 21:15 UTCJul 6, 23:25 UTC2h 10m - -
2026-07-06 A0B88A - Jul 6, 02:25 UTCJul 6, 04:20 UTC1h 55m - -
2026-07-05 A0B7DF - Jul 5, 20:00 UTCJul 5, 22:00 UTC2h 0m - -
2026-07-05 A0B7DE - Jul 5, 01:40 UTCJul 5, 03:30 UTC1h 50m - -
2026-07-04 A3D326 OAK → DEN Jul 4, 20:05 UTCJul 4, 22:10 UTC2h 5m - -
2026-07-04 A6EDA7 DEN → SAN Jul 4, 02:55 UTCJul 4, 04:50 UTC1h 55m - -
2026-07-03 A0B7D8 - Jul 3, 20:20 UTCJul 3, 22:20 UTC2h 0m - -
2026-07-03 A0B7DE - Jul 3, 03:15 UTCJul 3, 05:10 UTC1h 55m - -
2026-07-02 A0B7B7 - Jul 2, 20:40 UTCJul 2, 22:40 UTC2h 0m - -
2026-07-02 A0B7B7 SFO → DEN Jul 2, 20:29 UTCJul 2, 22:37 UTC2h 8m +46m +3m
2026-07-02 A3D2C0 DEN → SAN Jul 2, 01:40 UTCJul 2, 03:40 UTC2h 0m +20m -6m
2026-07-02 A3D2C0 - Jul 2, 01:40 UTCJul 2, 03:40 UTC2h 0m - -
2026-07-01 A0B7FD - Jul 1, 20:15 UTCJul 1, 22:15 UTC2h 0m - -
2026-07-01 A0B803 - Jul 1, 02:25 UTCJul 1, 04:25 UTC2h 0m - -

Performance history

Flights tracked
224 showing last 30
Avg arrival delay
-2m
On-time arrival
100% 100% on time
Aircraft used
22

Monthly activity 4 months

Month Flights tracked
July 2026 30
June 2026 89
May 2026 79
April 2026 26

UAL540 frequently asked

Where does flight UAL540 fly?
UAL540 (UAL) flies from SFO to DEN. View the full route page.
How long is flight UAL540?
Based on observed flights, UAL540 takes on average 2h 2m from takeoff to landing.
How often does UAL540 fly?
UAL540 has been observed flying several times a week in our tracking data. We've recorded 224 flights under this callsign.
Is flight UAL540 usually on time?
Across recent flights, UAL540 arrives 2 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL540?
UAL540 has been operated by 22 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL540 live?
Yes. When UAL540 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.