Air Canada
Is AC4155 delayed?
Service date: · Scheduled arrival date; departure time unavailable (America/Los_Angeles)
Estimated arrivalLast reported
26 min late
This update may be out of date. Check with your airline.
Update time unavailable
Departure
Tucson
TUS
Scheduled
Not available
Arrival
San Francisco
SFO
Estimated
Scheduled 09:27
Sep 16
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Not available
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Actual
- Not available
Operating flight: UAL4683
TUSSFO
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 26 min early
TUS → SFO
- 13 min early
TUS → SFO
- 12 min early
TUS → SFO
- 22 min early
TUS → SFO
- 15 min late
TUS → SFO
Flight history and details
Aug 17, 2026 — Sep 16, 2026
- Observed arrivals
- 12
- Arrivals over 15 minutes late
- 1
- Observed cancellations
- 0
- Observed occurrences
- 12
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 15, 2026Arrived | Tucson | San Francisco | -26 | |
| Sep 14, 2026Arrived | Tucson | San Francisco | -13 | |
| Sep 13, 2026Arrived | Tucson | San Francisco | -12 | |
| Sep 12, 2026Arrived | Tucson | San Francisco | -22 | |
| Sep 11, 2026Arrived | Tucson | San Francisco | 15 | |
| Sep 10, 2026Arrived | Tucson | San Francisco | -32 | |
| Sep 9, 2026Arrived | Tucson | San Francisco | -13 | |
| Sep 8, 2026Arrived | Tucson | San Francisco | -16 | |
| Sep 7, 2026Arrived | Tucson | San Francisco | 13 | |
| Sep 6, 2026Arrived | Tucson | San Francisco | 89 | |
| Sep 5, 2026Arrived | Tucson | San Francisco | 6 | |
| Sep 4, 2026Arrived | Tucson | San Francisco | -20 |