Diversion — UAL1255
KCOS · 17L2026-08-23 23:24 UTC· KGEG → KCOS· UNITED AIRLINES INC· B738
UAL1255 (United Airlines) was operating from KGEG to KDEN (Denver International Airport) on 2026-08-23. SkyMeter detected a diversion to City of Colorado Springs Municipal Airport (KCOS) on runway 17L at 23:24 UTC. Peak cruise altitude FL391, turnaround area near Hoback, US. Approach stability score: 89/100. Scores in this band are observed on roughly 50% of approaches at this runway and represent the centerline of normal operations. METAR at the time reported 7 kt wind, 4 kt crosswind component, 16,093 m visibility. Detection algorithm and known limitations: see SkyMeter methodology.
Active FAA TFR during this flight
Source: FAA TFR archive (hourly snapshot)- HAZARDS6/3167 2026-08-10 05:30Z – 2026-08-24 05:00Z SFC–10,000 ft
104NM SE BURNS, OR, Monday, August 10, 2026 through Monday, August 24, 2026 UTC
View FAA NOTAM → - HAZARDS6/3161 2026-08-10 12:00Z – 2026-08-25 03:30Z SFC–16,000 ft
13NM SE LANDER, WY, Monday, August 10, 2026 through Tuesday, August 25, 2026 UTC
View FAA NOTAM → - HAZARDS6/3618 2026-08-10 22:20Z – 2026-08-25 04:00Z SFC–13,000 ft
36NM SW BUTTE, MT, Monday, August 10, 2026 through Tuesday, August 25, 2026 UTC
View FAA NOTAM → - HAZARDS6/3659 2026-08-11 13:00Z – 2026-08-24 03:00Z SFC–14,000 ft
26NM SW PRICE, UT, Tuesday, August 11, 2026 through Monday, August 24, 2026 UTC
View FAA NOTAM → - HAZARDS6/4088 2026-08-12 00:39Z – 2026-08-27 04:00Z SFC–13,000 ft
36NM SW BUTTE, MT, Wednesday, August 12, 2026 through Thursday, August 27, 2026 UTC
View FAA NOTAM → - HAZARDS6/4085 2026-08-12 04:00Z – 2026-08-25 04:00Z SFC–13,000 ft
4NM W RICHFIELD, UT, Wednesday, August 12, 2026 through Tuesday, August 25, 2026 UTC
View FAA NOTAM → - HAZARDS6/4111 2026-08-12 05:00Z – 2026-08-27 05:00Z SFC–10,000 ft
104NM SE BURNS, OR, Wednesday, August 12, 2026 through Thursday, August 27, 2026 UTC
View FAA NOTAM → - HAZARDS6/4089 2026-08-12 12:00Z – 2026-08-27 03:30Z SFC–15,000 ft
2NM SE LANDER, WY, Wednesday, August 12, 2026 through Thursday, August 27, 2026 UTC
View FAA NOTAM → - HAZARDS6/4363 2026-08-12 17:00Z – 2026-08-26 04:00Z SFC–12,500 ft
33NM N BOISE, ID, Wednesday, August 12, 2026 through Wednesday, August 26, 2026 UTC
View FAA NOTAM → - HAZARDS6/4727 2026-08-13 14:00Z – 2026-08-27 04:00Z SFC–12,500 ft
33NM N BOISE, ID, Thursday, August 13, 2026 through Thursday, August 27, 2026 UTC
View FAA NOTAM → - HAZARDS6/4911 2026-08-13 15:00Z – 2026-08-28 04:00Z SFC–7,500 ft
10NM W LEWISTON, ID, Thursday, August 13, 2026 through Friday, August 28, 2026 UTC
View FAA NOTAM → - HAZARDS6/5073 2026-08-14 14:00Z – 2026-08-28 04:00Z SFC–12,500 ft
33NM N BOISE, ID, Friday, August 14, 2026 through Friday, August 28, 2026 UTC
View FAA NOTAM → - HAZARDS6/5136 2026-08-14 22:00Z – 2026-08-29 04:00Z SFC–10,000 ft
10NM E HAMILTON, MT, Friday, August 14, 2026 through Saturday, August 29, 2026 UTC
View FAA NOTAM → - HAZARDS6/5250 2026-08-16 13:00Z – 2026-08-30 04:00Z SFC–11,000 ft
52NM NE FALLON, NV, Sunday, August 16, 2026 through Sunday, August 30, 2026 UTC
View FAA NOTAM → - HAZARDS6/5423 2026-08-16 19:15Z – 2026-08-30 04:00Z SFC–11,000 ft
52NM NE FALLON, NV, Sunday, August 16, 2026 through Sunday, August 30, 2026 UTC
View FAA NOTAM → - HAZARDS6/5460 2026-08-17 12:00Z – 2026-08-30 04:00Z SFC–10,500 ft
9NM SW HAMILTON, MT, Monday, August 17, 2026 through Sunday, August 30, 2026 UTC
View FAA NOTAM → - HAZARDS6/5463 2026-08-17 13:00Z – 2026-08-30 04:00Z SFC–13,000 ft
20NM NE SALT LAKE CITY, UT, Monday, August 17, 2026 through Sunday, August 30, 2026 UTC
View FAA NOTAM → - HAZARDS6/5929 2026-08-18 12:00Z – 2026-08-31 03:00Z SFC–13,000 ft
36NM SW BUTTE, MT, Tuesday, August 18, 2026 through Monday, August 31, 2026 UTC
View FAA NOTAM → - HAZARDS6/5937 2026-08-18 13:00Z – 2026-08-31 03:00Z SFC–13,000 ft
4NM W RICHFIELD, UT, Tuesday, August 18, 2026 through Monday, August 31, 2026 UTC
View FAA NOTAM → - HAZARDS6/6067 2026-08-18 18:15Z – 2026-09-01 02:00Z SFC–11,000 ft
52NM NE FALLON, NV, Tuesday, August 18, 2026 through Tuesday, September 1, 2026 UTC
View FAA NOTAM → - HAZARDS6/6215 2026-08-19 14:00Z – 2026-09-01 04:00Z SFC–11,000 ft
12NM W PLAINS, MT, Wednesday, August 19, 2026 through Tuesday, September 1, 2026 UTC
View FAA NOTAM → - HAZARDS6/6728 2026-08-20 13:00Z – 2026-08-27 03:00Z SFC–14,500 ft
8NM N ASPEN, CO, Thursday, August 20, 2026 through Thursday, August 27, 2026 UTC
View FAA NOTAM → - HAZARDS6/6599 2026-08-20 13:00Z – 2026-09-03 03:00Z SFC–11,000 ft
21NM SE HAMILTON, MT, Thursday, August 20, 2026 through Thursday, September 3, 2026 UTC
View FAA NOTAM → - HAZARDS6/6724 2026-08-20 13:00Z – 2026-09-03 03:30Z SFC–11,500 ft
32NM NE BOISE, ID, Thursday, August 20, 2026 through Thursday, September 3, 2026 UTC
View FAA NOTAM → - HAZARDS6/6723 2026-08-20 14:00Z – 2026-09-03 04:00Z SFC–9,000 ft
16NM E BIG TIMBER, MT, Thursday, August 20, 2026 through Thursday, September 3, 2026 UTC
View FAA NOTAM → - HAZARDS6/6719 2026-08-20 14:00Z – 2026-09-02 04:00Z SFC–11,000 ft
12NM W PLAINS, MT, Thursday, August 20, 2026 through Wednesday, September 2, 2026 UTC
View FAA NOTAM → - AIR SHOWS/SPORTS6/4977 2026-08-20 17:30Z – 2026-08-23 22:30Z SFC–17,999 ft
Billings, MT, Thursday, August 20, 2026 through Sunday, August 23, 2026 UTC
View FAA NOTAM → - AIR SHOWS/SPORTS6/4976 2026-08-20 17:30Z – 2026-08-23 22:30Z
BILLINGS, MT, Thursday, August 20, 2026 through Sunday, August 23, 2026 UTC
View FAA NOTAM → - HAZARDS6/6954 2026-08-21 14:00Z – 2026-09-04 03:00Z SFC–11,000 ft
33NM SW POCATELLO, ID, Friday, August 21, 2026 through Friday, September 4, 2026 UTC
View FAA NOTAM → - HAZARDS6/6935 2026-08-21 15:00Z – 2026-09-04 04:00Z SFC–10,000 ft
48NM NE OROFINO, ID, Friday, August 21, 2026 through Friday, September 4, 2026 UTC
View FAA NOTAM → - HAZARDS6/7092 2026-08-22 13:00Z – 2026-09-04 03:00Z SFC–14,000 ft
26NM SW PRICE, UT, Saturday, August 22, 2026 through Friday, September 4, 2026 UTC
View FAA NOTAM → - HAZARDS6/7095 2026-08-22 14:00Z – 2026-09-05 04:00Z SFC–11,000 ft
10NM W PLAINS, MT, Saturday, August 22, 2026 through Saturday, September 5, 2026 UTC
View FAA NOTAM → - HAZARDS6/7115 2026-08-22 23:30Z – 2026-09-04 03:00Z SFC–13,000 ft
41NM E PRICE, UT, Saturday, August 22, 2026 through Friday, September 4, 2026 UTC
View FAA NOTAM → - HAZARDS6/7121 2026-08-23 03:30Z – 2026-09-05 04:00Z SFC–10,000 ft
60NM SW MOUNTAIN HOME, ID, Sunday, August 23, 2026 through Saturday, September 5, 2026 UTC
View FAA NOTAM →
SkyMeter cross-referenced this flight against FAA-published TFRs that were active during its window and within its geographic bounding box. Overlap doesn't necessarily mean violation — the aircraft may have been outside the TFR’s precise polygon or flying under air-traffic-control coordination.
Pilot review data
- Runway 17L
- 6103 ft AGL at event
- 120 kt ground speed
- 0 fpm vertical
- Approach stability 89/100
- 7 kt wind
- 4 kt crosswind component
- 16,093 m visibility
- KCOS 160454Z 16005KT 10SM FEW090 BKN140 BKN230 13/07 A3032 RMK AO2 SLP210 T01330067 $
Flight context
- UAL1255
- United Airlines
- B738
- KGEG → KCOS
- 2026-08-23 23:24 UTC
- KCOS runway 17L
All events on this flight
Automated analysis. Events shown on this page (such as go-around, unstable approach, or runway events) are heuristic classifications produced by algorithms from publicly broadcast ADS-B data. They are intended to surface flights of interest for further review — they are not findings of fact, and they do not determine pilot fault, regulatory compliance, or the cause of any occurrence. Coverage gaps and sensor noise can affect accuracy. Only the relevant civil aviation authority or accident investigation body can make official determinations. How we detect events · Dispute or correct this data