flight_takeoff Flight
UAL939
Live map
Recent history last 30
| Date | Aircraft | Route | Takeoff | Landing | Duration | Dep Δ | Arr Δ |
|---|---|---|---|---|---|---|---|
| 2026-07-13 | A6679B | - | Jul 13, 17:05 UTC | Jul 14, 03:45 UTC | 10h 40m | - | - |
| 2026-07-13 | A6679B | LHR → SFO | Jul 13, 15:39 UTC | Jul 14, 03:41 UTC | 12h 2m | +24m | +13m |
| 2026-07-12 | A7F4E9 | - | Jul 12, 15:55 UTC | Jul 13, 02:15 UTC | 10h 20m | - | - |
| 2026-07-11 | A6679B | LHR → SFO | Jul 11, 15:55 UTC | Jul 12, 02:20 UTC | 10h 25m | - | - |
| 2026-07-10 | A7F4EC | - | Jul 10, 15:50 UTC | Jul 11, 02:20 UTC | 10h 30m | - | - |
| 2026-07-09 | A1BFAC | - | Jul 9, 15:40 UTC | Jul 10, 02:00 UTC | 10h 20m | - | - |
| 2026-07-08 | A6679B | - | Jul 8, 15:40 UTC | Jul 9, 01:45 UTC | 10h 5m | - | - |
| 2026-07-08 | A6679B | LHR → SFO | Jul 8, 15:39 UTC | Jul 9, 01:40 UTC | 10h 1m | +24m | on time |
| 2026-07-07 | A7F4EC | - | Jul 7, 15:35 UTC | Jul 8, 02:05 UTC | 10h 30m | - | - |
| 2026-07-06 | AB0F89 | - | Jul 6, 15:55 UTC | Jul 7, 02:20 UTC | 10h 25m | - | - |
| 2026-07-05 | A27C78 | - | Jul 5, 15:40 UTC | Jul 6, 02:00 UTC | 10h 20m | - | - |
| 2026-07-04 | A6679B | - | Jul 4, 15:45 UTC | Jul 5, 02:15 UTC | 10h 30m | - | - |
| 2026-07-04 | A6679B | LHR → SFO | Jul 4, 15:39 UTC | Jul 5, 02:09 UTC | 10h 30m | +24m | -2m |
| 2026-07-02 | A7F4EC | - | Jul 2, 15:35 UTC | Jul 3, 01:50 UTC | 10h 15m | - | - |
| 2026-07-01 | A6679B | - | Jul 1, 15:45 UTC | Jul 2, 01:50 UTC | 10h 5m | - | - |
| 2026-06-30 | A1BFAC | - | Jun 30, 16:00 UTC | Jul 1, 02:00 UTC | 10h 0m | - | - |
| 2026-06-29 | A7F4EC | - | Jun 29, 15:54 UTC | Jun 30, 01:45 UTC | 9h 51m | - | - |
| 2026-06-28 | A6671B | - | Jun 28, 15:55 UTC | Jun 28, 16:05 UTC | 10m | - | - |
| 2026-06-28 | A6679B | - | Jun 28, 15:49 UTC | Jun 29, 01:34 UTC | 9h 45m | - | - |
| 2026-06-27 | A1BFAC | - | Jun 27, 15:55 UTC | Jun 28, 02:05 UTC | 10h 10m | - | - |
| 2026-06-26 | A7F4E9 | - | Jun 26, 16:05 UTC | Jun 26, 16:14 UTC | 10m | - | - |
| 2026-06-26 | A7F4E9 | LHR → SFO | Jun 26, 15:45 UTC | Jun 27, 02:14 UTC | 10h 29m | +30m | -6m |
| 2026-06-25 | A1BFAC | - | Jun 25, 15:54 UTC | Jun 26, 01:54 UTC | 10h 0m | - | - |
| 2026-06-24 | A6679B | - | Jun 24, 17:20 UTC | Jun 25, 03:10 UTC | 9h 50m | - | - |
| 2026-06-23 | AB0F89 | - | Jun 23, 16:54 UTC | Jun 24, 03:10 UTC | 10h 15m | - | - |
| 2026-06-22 | A7F4EC | - | Jun 22, 15:50 UTC | Jun 23, 01:54 UTC | 10h 5m | - | - |
| 2026-06-22 | A7F4EC | LHR → SFO | Jun 22, 15:39 UTC | Jun 23, 01:52 UTC | 10h 13m | +24m | +10m |
| 2026-06-21 | A7F4E9 | LHR → SFO | Jun 21, 16:14 UTC | Jun 22, 02:26 UTC | 10h 12m | +59m | +40m |
| 2026-06-20 | A7F4EC | - | Jun 20, 15:44 UTC | Jun 21, 01:45 UTC | 10h 0m | - | - |
| 2026-06-19 | A6679B | - | Jun 19, 15:49 UTC | Jun 20, 01:50 UTC | 10h 0m | - | - |
Performance history
- Flights tracked
- 144 showing last 30
- Avg arrival delay
- +9m
- On-time arrival
- 83% 83% on time
- Aircraft used
- 7
Monthly activity 4 months
| Month | Flights tracked |
|---|---|
| July 2026 | 15 |
| June 2026 | 37 |
| May 2026 | 44 |
| April 2026 | 48 |
UAL939 frequently asked
How long is flight UAL939?
Based on observed flights, UAL939 takes on average 9h 36m from takeoff to landing.
How often does UAL939 fly?
UAL939 has been observed flying several times a week in our tracking data. We've recorded 144 flights under this callsign.
Is flight UAL939 usually on time?
Across recent flights, UAL939 arrives with an average 9-minute delay. 83% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL939?
UAL939 has been operated by 7 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL939 live?
Yes. When UAL939 is currently airborne, the live tracker map above shows its real-time position from ADS-B broadcasts. If the map is empty, the flight is not currently in the air.