Is UA520 delayed?

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

Service date: Sep 4, 2026 · Scheduled departure date (America/Denver)

Arrived

30 min late

Official source · Updated Sep 5, 2026, 03:26 UTC

Departure

Salt Lake City

SLC

Actual

20:30~~19:15~~

Sep 4

Arrival

Denver

DEN

Actual

21:26~~20:56~~

Sep 4

Times shown in airport local time

Flight details

Departure · UTC

Scheduled: Sep 5, 2026, 01:15 UTC
Estimated: Not available
Actual: Sep 5, 2026, 02:30 UTC

Arrival · UTC

Scheduled: Sep 5, 2026, 02:56 UTC
Estimated: Not available
Actual: Sep 5, 2026, 03:26 UTC

Service date: Sep 4, 2026 · Scheduled departure date (America/Los_Angeles)

Arrived

15 min early

Official source · Updated Sep 4, 2026, 22:57 UTC

Departure

San Francisco

SFO

Actual

14:36~~14:08~~

Sep 4

Arrival

Salt Lake City

SLC

Actual

16:52~~17:07~~

Sep 4

Times shown in airport local time

Flight details

Departure · UTC

Scheduled: Sep 4, 2026, 21:08 UTC
Estimated: Not available
Actual: Sep 4, 2026, 21:36 UTC

Arrival · UTC

Scheduled: Sep 4, 2026, 23:07 UTC
Estimated: Not available
Actual: Sep 4, 2026, 22:52 UTC

Service date: Sep 4, 2026 · Scheduled arrival date; departure time unavailable (America/Los_Angeles)

Arrived

40 min early

Official source · Updated Sep 4, 2026, 17:57 UTC

Departure

Burbank

BUR

Scheduled

—

Not available

Arrival

San Francisco

SFO

Actual

10:45~~11:25~~

Sep 4

Times shown in airport local time

Flight details

Departure · UTC

Scheduled: Not available
Estimated: Not available
Actual: Not available

Arrival · UTC

Scheduled: Sep 4, 2026, 18:25 UTC
Estimated: Sep 4, 2026, 17:53 UTC
Actual: Sep 4, 2026, 17:45 UTC

Route overview

BURSFO

Recent arrivals

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

Thu, Sep 17, 2026
BUR → SFO
58 min late
Wed, Sep 16, 2026
SLC → DEN
1 min early
Wed, Sep 16, 2026
SFO → SLC
4 min late
Wed, Sep 16, 2026
BUR → SFO
23 min early
Tue, Sep 15, 2026
SFO → SLC
1 min late

Flight history and details

Aug 18, 2026 — Sep 17, 2026

Observed arrivals: 41
Arrivals over 15 minutes late: 13
Observed cancellations: 0
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

UA520 Recent arrival history
Service date	Departure	Arrival	Actual	Arrival delay (minutes)
Sep 17, 2026Arrived	Burbank	San Francisco	Sep 17, 2026, 19:01 UTC View this flight’s market	58
Sep 16, 2026Arrived	Salt Lake City	Denver	Sep 17, 2026, 02:48 UTC View this flight’s market	-1
Sep 16, 2026Arrived	San Francisco	Salt Lake City	Sep 16, 2026, 23:08 UTC View this flight’s market	4
Sep 16, 2026Arrived	Burbank	San Francisco	Sep 16, 2026, 17:54 UTC	-23
Sep 15, 2026Arrived	San Francisco	Salt Lake City	Sep 15, 2026, 23:05 UTC	1
Sep 15, 2026Arrived	Burbank	San Francisco	Sep 15, 2026, 18:28 UTC	11
Sep 14, 2026Arrived	Salt Lake City	Denver	Sep 15, 2026, 02:14 UTC	-35
Sep 14, 2026Arrived	Burbank	San Francisco	Sep 14, 2026, 18:00 UTC	-14
Sep 13, 2026Arrived	Salt Lake City	Denver	Sep 14, 2026, 02:42 UTC	-7
Sep 13, 2026Arrived	Burbank	San Francisco	Sep 13, 2026, 17:50 UTC	-20
Sep 12, 2026Arrived	Burbank	San Francisco	Sep 12, 2026, 18:21 UTC	25
Sep 11, 2026Arrived	San Francisco	Salt Lake City	Sep 11, 2026, 23:11 UTC	7
Sep 11, 2026Arrived	Burbank	San Francisco	Sep 11, 2026, 18:23 UTC	17
Sep 10, 2026Arrived	San Francisco	Salt Lake City	Sep 10, 2026, 23:36 UTC	32
Sep 10, 2026Arrived	Burbank	San Francisco	Sep 10, 2026, 18:32 UTC	29
Sep 9, 2026Arrived	San Francisco	Salt Lake City	Sep 9, 2026, 22:50 UTC	-13
Sep 9, 2026Arrived	Burbank	San Francisco	Sep 9, 2026, 18:07 UTC	-10
Sep 8, 2026Arrived	San Francisco	Salt Lake City	Sep 8, 2026, 23:34 UTC	30
Sep 8, 2026Arrived	Burbank	San Francisco	Sep 8, 2026, 18:38 UTC	21
Sep 7, 2026Arrived	Salt Lake City	Denver	Sep 8, 2026, 02:25 UTC	-24
Sep 7, 2026Arrived	San Francisco	Salt Lake City	Sep 7, 2026, 23:16 UTC	12
Sep 7, 2026Arrived	Burbank	San Francisco	Sep 7, 2026, 18:28 UTC	6
Sep 6, 2026Arrived	San Francisco	Salt Lake City	Sep 6, 2026, 22:47 UTC	-16
Sep 6, 2026Arrived	Burbank	San Francisco	Sep 6, 2026, 18:28 UTC	26
Sep 5, 2026Arrived	San Francisco	Salt Lake City	Sep 5, 2026, 22:37 UTC	-29
Sep 5, 2026Arrived	Burbank	San Francisco	Sep 5, 2026, 17:53 UTC	-9
Sep 4, 2026Arrived	Salt Lake City	Denver	Sep 5, 2026, 03:26 UTC	30
Sep 4, 2026Arrived	San Francisco	Salt Lake City	Sep 4, 2026, 22:52 UTC	-15
Sep 4, 2026Arrived	Burbank	San Francisco	Sep 4, 2026, 17:45 UTC	-40
Sep 3, 2026Arrived	Salt Lake City	Denver	Sep 4, 2026, 02:33 UTC	-22
Sep 2, 2026Arrived	Salt Lake City	Denver	Sep 3, 2026, 02:39 UTC	-16
Sep 2, 2026Arrived	San Francisco	Salt Lake City	Sep 2, 2026, 23:14 UTC	7
Aug 31, 2026Arrived	Salt Lake City	Denver	Sep 1, 2026, 02:53 UTC	-2
Aug 30, 2026Arrived	Salt Lake City	Denver	Aug 31, 2026, 04:32 UTC	96
Aug 28, 2026Arrived	Salt Lake City	Denver	Aug 29, 2026, 02:29 UTC	-26
Aug 27, 2026Arrived	Salt Lake City	Denver	Aug 28, 2026, 02:52 UTC	-3
Aug 26, 2026Arrived	Salt Lake City	Denver	Aug 27, 2026, 03:09 UTC	13
Aug 24, 2026Arrived	Salt Lake City	Denver	Aug 25, 2026, 03:40 UTC	44
Aug 23, 2026Arrived	Salt Lake City	Denver	Aug 24, 2026, 03:54 UTC	58
Aug 21, 2026Arrived	Salt Lake City	Denver	Aug 22, 2026, 04:47 UTC	111
Aug 20, 2026Arrived	Salt Lake City	Denver	Aug 21, 2026, 02:37 UTC	-19