Is UA3939 delayed?
Service date: · Scheduled departure date (America/Los_Angeles)
Last reported
Cancelled
This update may be out of date. Check with your airline.
Update time unavailable
Departure
Los Angeles
LAX
Scheduled
Sep 6
Arrival
Dulles
IAD
Scheduled
Sep 6
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 82 min late
DEN → ABQ
- 242 min late
MCO → FLL
- 23 min late
SFO → DEN
- 36 min late
CDG → IAD
- 127 min late
DEN → SFO
Flight history and details
Aug 21, 2026 — Sep 20, 2026
- Observed arrivals
- 5
- Arrivals over 15 minutes late
- 5
- Observed cancellations
- 1
- Observed occurrences
- 6
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 19, 2026Arrived | Denver | Albuquerque | 82 | |
| Sep 17, 2026Arrived | Orlando | Fort Lauderdale | 242 | |
| Sep 14, 2026Arrived | San Francisco | Denver | 23 | |
| Sep 10, 2026Arrived | Paris | Dulles | 36 | |
| Sep 8, 2026Arrived | Denver | San Francisco | 127 | |
| Sep 6, 2026Cancelled | Los Angeles | Dulles | Not available | Not available |