UAL1866 is operated by UNITED AIRLINES INC, ATTN: TREASURER between Greenville Spartanburg International Airport (KGSP) and Denver International Airport (KDEN). The flight is most often flown by a AIRBUS Airbus A320. Typical block time is 2h 1m. SkyMeter has observed 102 legs of this flight number via ADS-B.

✈
FLIGHTS
102
last 90 days
⏱
AVG DURATION
2h 1m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/22/2026
first → last seen
🗺
ROUTES / TYPES
22 / 6
city pairs · airframes
⚠
INCIDENT RATE
1.0%
1 flagged

Routes flown

By count · last 90 days

10
KGSP → KDEN
36
avg 3h 3m · Greenville Spartanburg → Denver
KGRR → KORD
21
avg 40m · Gerald R. Ford → Chicago O'Hare
KORD → KEWR
7
avg 1h 41m · Chicago O'Hare → Newark Liberty
KMCI → KDEN
1
avg 1h 27m · Kansas City → Denver
KGSP → KICT
1
avg 3h 42m · Greenville Spartanburg → Wichita Eisenhower National
KEWR → KJAC
1
avg 4h 36m · Newark Liberty → Jackson Hole
KGSP → KMCI
1
avg 2h 35m · Greenville Spartanburg → Kansas City
20SC → KDEN
1
avg 2h 45m · O Neal Field → Denver
03CO → KDEN
1
avg 14m · Kugel-Strong → Denver
KGSP → KCOS
1
avg 3h 25m · Greenville Spartanburg → City of Colorado Springs

Aircraft types

Equipment used on this number

6
A320 AIRBUS Airbus A320
77
B737 BOEING Boeing 737-700
28
A21N AIRBUS Airbus A321 Neo
14
A319 AIRBUS Airbus A319
6
B738 BOEING Boeing 737-800
3
B739 BOEING Boeing 737-900
3

Safety profile

Flagged flights · last 90 days

Go-arounds
1
Unstable approach
0
Rejected TO
0
Stall warnings
0
Overspeeds
0
Runway excursion
0
Counts represent flights with at least one occurrence of each flag, not the total event count. See /incidents for individual events.

Recent flights

Newest 30 operations of UAL1866

30
N39728BOEING Boeing 737-700
→
08/22/2026
42m
No alerts
Replay Analysis
N29717BOEING Boeing 737-700
→
08/22/2026
2h 45m
No alerts
Replay Analysis
N24715BOEING Boeing 737-700
→
08/21/2026
4h 9m
No alerts
Replay Analysis
N39726BOEING Boeing 737-700
→
08/18/2026
1h 46m
No alerts
Replay Analysis
N16709BOEING Boeing 737-700
→
08/18/2026
3h 23m
No alerts
Replay Analysis
N16709BOEING Boeing 737-700
→
08/17/2026
53m
No alerts
Replay Analysis
N16709BOEING Boeing 737-700
→
08/17/2026
4h 17m
No alerts
Replay Analysis
N17752BOEING Boeing 737-700
→
08/17/2026
4h 35m
No alerts
Replay Analysis
N16713BOEING Boeing 737-700
→
08/16/2026
2h 33m
No alerts
Replay Analysis
N16713BOEING Boeing 737-700
→
08/15/2026
1h 45m
No alerts
Replay Analysis
N16713BOEING Boeing 737-700
→
08/15/2026
4h 18m
No alerts
Replay Analysis
N15710BOEING Boeing 737-700
→
08/15/2026
3h 2m
No alerts
Replay Analysis
N15710BOEING Boeing 737-700
→
08/14/2026
1h 8m
No alerts
Replay Analysis
N15710BOEING Boeing 737-700
→
08/14/2026
4h 10m
No alerts
Replay Analysis
N13716BOEING Boeing 737-700
→
08/14/2026
2h 35m
No alerts
Replay Analysis
N13716BOEING Boeing 737-700
→
08/13/2026
1h 46m
No alerts
Replay Analysis
N13716BOEING Boeing 737-700
→
08/13/2026
4h 22m
No alerts
Replay Analysis
N24736BOEING Boeing 737-700
→
08/11/2026
1h 41m
No alerts
Replay Analysis
N445UAAIRBUS Airbus A320
→
08/10/2026
3h 6m
No alerts
Replay Analysis
N466UAAIRBUS Airbus A320
→
08/09/2026
3h 5m
No alerts
Replay Analysis
N492UAAIRBUS Airbus A320
→
08/09/2026
47m
No alerts
Replay Analysis
N492UAAIRBUS Airbus A320
→
08/09/2026
14m
No alerts
Replay Analysis
N492UAAIRBUS Airbus A320
→
08/08/2026
3h 25m
No alerts
Replay Analysis
N492UAAIRBUS Airbus A320
→
08/08/2026
3h 10m
No alerts
Replay Analysis
N430UAAIRBUS Airbus A320
→
08/07/2026
3h 11m
No alerts
Replay Analysis
N473UAAIRBUS Airbus A320
→
08/06/2026
3h 1m
No alerts
Replay Analysis
N466UAAIRBUS Airbus A320
→
08/05/2026
2h 56m
No alerts
Replay Analysis
N472UAAIRBUS Airbus A320
→
08/04/2026
3h 3m
No alerts
Replay Analysis
N484UAAIRBUS Airbus A320
→
08/03/2026
3h 5m
No alerts
Replay Analysis
N462UAAIRBUS Airbus A320
→
08/02/2026
2h 55m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window