Is UA520 delayed?
Each route and date is shown separately. Confirm that both airports match your booking.
Service date: · Scheduled departure date (America/Denver)
1 min early
Official source · Updated
Departure
Salt Lake City
SLC
Actual
Sep 16
Arrival
Denver
DEN
Actual
Sep 16
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
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Service date: · Scheduled departure date (America/Los_Angeles)
4 min late
Official source · Updated
Departure
San Francisco
SFO
Actual
Sep 16
Arrival
Salt Lake City
SLC
Actual
Sep 16
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
Service date: · Scheduled departure date (UTC)
23 min early
Official source · Updated
Departure
Burbank
BUR
Actual
Sep 16
Arrival
San Francisco
SFO
Actual
Sep 16
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 58 min late
BUR → SFO
- 1 min early
SLC → DEN
- 4 min late
SFO → SLC
- 23 min early
BUR → SFO
- 1 min late
SFO → SLC
Flight history and details
Aug 18, 2026 — Sep 17, 2026
- Observed arrivals
- 41
- Arrivals over 15 minutes late
- 13
- Observed cancellations
- 0
- Observed occurrences
- 56
Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 17, 2026Arrived | Burbank | San Francisco | 58 | |
| Sep 16, 2026Arrived | Salt Lake City | Denver | -1 | |
| Sep 16, 2026Arrived | San Francisco | Salt Lake City | 4 | |
| Sep 16, 2026Arrived | Burbank | San Francisco | -23 | |
| Sep 15, 2026Arrived | San Francisco | Salt Lake City | 1 | |
| Sep 15, 2026Arrived | Burbank | San Francisco | 11 | |
| Sep 14, 2026Arrived | Salt Lake City | Denver | -35 | |
| Sep 14, 2026Arrived | Burbank | San Francisco | -14 | |
| Sep 13, 2026Arrived | Salt Lake City | Denver | -7 | |
| Sep 13, 2026Arrived | Burbank | San Francisco | -20 | |
| Sep 12, 2026Arrived | Burbank | San Francisco | 25 | |
| Sep 11, 2026Arrived | San Francisco | Salt Lake City | 7 | |
| Sep 11, 2026Arrived | Burbank | San Francisco | 17 | |
| Sep 10, 2026Arrived | San Francisco | Salt Lake City | 32 | |
| Sep 10, 2026Arrived | Burbank | San Francisco | 29 | |
| Sep 9, 2026Arrived | San Francisco | Salt Lake City | -13 | |
| Sep 9, 2026Arrived | Burbank | San Francisco | -10 | |
| Sep 8, 2026Arrived | San Francisco | Salt Lake City | 30 | |
| Sep 8, 2026Arrived | Burbank | San Francisco | 21 | |
| Sep 7, 2026Arrived | Salt Lake City | Denver | -24 | |
| Sep 7, 2026Arrived | San Francisco | Salt Lake City | 12 | |
| Sep 7, 2026Arrived | Burbank | San Francisco | 6 | |
| Sep 6, 2026Arrived | San Francisco | Salt Lake City | -16 | |
| Sep 6, 2026Arrived | Burbank | San Francisco | 26 | |
| Sep 5, 2026Arrived | San Francisco | Salt Lake City | -29 | |
| Sep 5, 2026Arrived | Burbank | San Francisco | -9 | |
| Sep 4, 2026Arrived | Salt Lake City | Denver | 30 | |
| Sep 4, 2026Arrived | San Francisco | Salt Lake City | -15 | |
| Sep 4, 2026Arrived | Burbank | San Francisco | -40 | |
| Sep 3, 2026Arrived | Salt Lake City | Denver | -22 | |
| Sep 2, 2026Arrived | Salt Lake City | Denver | -16 | |
| Sep 2, 2026Arrived | San Francisco | Salt Lake City | 7 | |
| Aug 31, 2026Arrived | Salt Lake City | Denver | -2 | |
| Aug 30, 2026Arrived | Salt Lake City | Denver | 96 | |
| Aug 28, 2026Arrived | Salt Lake City | Denver | -26 | |
| Aug 27, 2026Arrived | Salt Lake City | Denver | -3 | |
| Aug 26, 2026Arrived | Salt Lake City | Denver | 13 | |
| Aug 24, 2026Arrived | Salt Lake City | Denver | 44 | |
| Aug 23, 2026Arrived | Salt Lake City | Denver | 58 | |
| Aug 21, 2026Arrived | Salt Lake City | Denver | 111 | |
| Aug 20, 2026Arrived | Salt Lake City | Denver | -19 |