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United Airlines

Is UA540 delayed?

Each route and date is shown separately. Confirm that both airports match your booking.

Service date: · Scheduled departure date (America/Denver)

Arrived

78 min late

Updated

Departure

Denver

DEN

Actual

Scheduled 19:05

Aug 27

Arrival

San Diego

SAN

Actual

Scheduled 20:34

Aug 27

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Actual

Arrival · UTC

Scheduled
Estimated
Actual

Service date: · Scheduled departure date (America/Los_Angeles)

Estimated arrivalLast reported

8 min late

This update may be out of date. Check with your airline.

Update time unavailable

Departure

San Francisco

SFO

Actual

Scheduled 12:35

Aug 27

Arrival

Denver

DEN

Estimated

Scheduled 16:25

Aug 27

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Actual

Arrival · UTC

Scheduled
Estimated
Actual
Not available
Route overview: Denver → San DiegoDENSAN
Route overview
Route overview: San Francisco → DenverSFODEN
Route overview

Recent arrivals

Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.

  • DEN → SAN

    1 min early

  • SFO → DEN

    2 min early

  • DEN → SAN

    22 min late

  • SFO → DEN

    24 min late

  • DEN → SAN

    43 min late
Flight history and details

Aug 18, 2026 — Sep 17, 2026

Observed arrivals
37
Arrivals over 15 minutes late
17
Observed cancellations
2
Observed occurrences
57

Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.

How flight status works

UA540 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 16, 2026ArrivedDenverSan Diego
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-1
Sep 16, 2026ArrivedSan FranciscoDenver
-2
Sep 15, 2026ArrivedDenverSan Diego
22
Sep 15, 2026ArrivedSan FranciscoDenver
24
Sep 14, 2026ArrivedDenverSan Diego
43
Sep 14, 2026ArrivedSan FranciscoDenver
45
Sep 13, 2026ArrivedDenverSan Diego
83
Sep 13, 2026ArrivedSan FranciscoDenver
-17
Sep 12, 2026ArrivedDenverSan Diego
-8
Sep 12, 2026ArrivedSan FranciscoDenver
54
Sep 11, 2026ArrivedDenverSan Diego
4
Sep 10, 2026ArrivedDenverSan Diego
3
Sep 10, 2026ArrivedSan FranciscoDenver
-1
Sep 9, 2026ArrivedDenverSan Diego
-22
Sep 9, 2026ArrivedSan FranciscoDenver
2
Sep 8, 2026ArrivedDenverSan Diego
-2
Sep 8, 2026ArrivedSan FranciscoDenver
-15
Sep 7, 2026ArrivedDenverSan Diego
106
Sep 7, 2026ArrivedSan FranciscoDenver
-5
Sep 6, 2026ArrivedDenverSan Diego
-4
Sep 6, 2026ArrivedSan FranciscoDenver
-19
Sep 5, 2026ArrivedDenverSan Diego
-13
Sep 5, 2026ArrivedSan FranciscoDenver
-28
Sep 4, 2026ArrivedDenverSan Diego
157
Sep 4, 2026ArrivedSan FranciscoDenver
-5
Sep 3, 2026ArrivedDenverSan Diego
51
Sep 2, 2026ArrivedDenverSan Diego
0
Sep 2, 2026ArrivedSan FranciscoDenver
5
Sep 1, 2026ArrivedDenverSan Diego
-11
Aug 31, 2026ArrivedDenverSan Diego
41
Aug 30, 2026ArrivedDenverSan Diego
45
Aug 29, 2026ArrivedDenverSan Diego
23
Aug 29, 2026ArrivedSan FranciscoDenver
15
Aug 28, 2026ArrivedDenverSan Diego
104
Aug 27, 2026ArrivedDenverSan Diego
78
Aug 26, 2026ArrivedDenverSan Diego
117
Aug 25, 2026ArrivedDenverSan Diego
21
Aug 24, 2026CancelledDenverNot available
Not available
Aug 23, 2026CancelledDenverNot available
Not available

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