Is UA520 delayed?
Each route and date is shown separately. Confirm that both airports match your booking.
Service date: · Scheduled departure date (America/Denver)
111 min late
Updated
Departure
Salt Lake City
SLC
Actual
Aug 21
Arrival
Denver
DEN
Actual
Aug 21
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)
61 min late
This update may be out of date. Check with your airline.
Update time unavailable
Departure
San Francisco
SFO
Actual
Aug 21
Arrival
Salt Lake City
SLC
Estimated
Aug 21
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Actual
Arrival · UTC
- Scheduled
- Estimated
- Actual
- Not available
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 37 min early
SLC → DEN
- 84 min late
SFO → SLC
- 58 min late
BUR → SFO
- 1 min early
SLC → DEN
- 4 min late
SFO → SLC
Flight history and details
Aug 19, 2026 — Sep 18, 2026
- Observed arrivals
- 43
- Arrivals over 15 minutes late
- 14
- Observed cancellations
- 0
- Observed occurrences
- 58
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 | Salt Lake City | Denver | -37 | |
| Sep 17, 2026Arrived | San Francisco | Salt Lake City | 84 | |
| 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 |