UAL1239

UNITED AIRLINES INC · ATL → ORD

UAL1239 is operated by UNITED AIRLINES INC between Hartsfield Jackson Atlanta International Airport (KATL) and Chicago O'Hare International Airport (KORD). The flight is most often flown by a BOEING Boeing 737-800. Typical block time is 1h 28m. SkyMeter has observed 184 legs of this flight number via ADS-B.

✈
FLIGHTS
184
last 90 days
⏱
AVG DURATION
1h 28m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 8/10/2026
first → last seen
🗺
ROUTES / TYPES
9 / 7
city pairs · airframes
⚠
INCIDENT RATE
1.6%
3 flagged

Routes flown

By count · last 90 days

7
KATL → KORD
74
avg 1h 53m · Hartsfield Jackson Atlanta → Chicago O'Hare
KORD → KROC
63
avg 1h 22m · Chicago O'Hare → Greater Rochester
KALB → KORD
7
avg 1h 54m · Albany → Chicago O'Hare
KATL → KMLI
1
avg 3h 7m · Hartsfield Jackson Atlanta → Quad City
KMLI → KORD
1
avg 34m · Quad City → Chicago O'Hare
US-0263 → KROC
1
avg 1h 18m · Ravenswood → Greater Rochester
7IS6 → KORD
1
avg 4h 3m · Elmhurst Memorial Hospital Heliport → Chicago O'Hare

Aircraft types

Equipment used on this number

7
B738 BOEING Boeing 737-800
100
B739 BOEING Boeing 737-900
36
B737 BOEING Boeing 737-700
21
B39M BOEING Boeing 737 MAX 9
17
A320 AIRBUS Airbus A320
7
A319 AIRBUS Airbus A319
7
B38M BOEING Boeing 737 MAX 8
2

Safety profile

Flagged flights · last 90 days

Go-arounds
1
Unstable approach
2
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 UAL1239

30
N27267BOEING Boeing 737 MAX 8
→
8/10/2026
1h 12m
No alerts
Replay Analysis
N14235BOEING Boeing 737-800
→
8/10/2026
1h 47m
No alerts
Replay Analysis
N14235BOEING Boeing 737-800
→
8/10/2026
8m
No alerts
Replay Analysis
N76515BOEING Boeing 737-800
→
8/9/2026
1h 13m
No alerts
Replay Analysis
N76515BOEING Boeing 737-800
→
8/9/2026
13m
No alerts
Replay Analysis
N76515BOEING Boeing 737-800
→
8/9/2026
9m
No alerts
Replay Analysis
N76515BOEING Boeing 737-800
→
8/9/2026
44m
No alerts
Replay Analysis
N61898BOEING Boeing 737-900
→
8/9/2026
4h 2m
No alerts
Replay Analysis
N38467BOEING Boeing 737-900
→
8/8/2026
1h 44m
No alerts
Replay Analysis
N37281BOEING Boeing 737-800
→
8/7/2026
1h 54m
No alerts
Replay Analysis
N12216BOEING Boeing 737-800
→
8/7/2026
1h 42m
No alerts
Replay Analysis
N16703BOEING Boeing 737-700
→
8/6/2026
1h 13m
No alerts
Replay Analysis
N37298BOEING Boeing 737-800
→
8/6/2026
1h 44m
No alerts
Replay Analysis
N37372BOEING Boeing 737 MAX 8
→
8/5/2026
1h 16m
No alerts
Replay Analysis
N67815BOEING Boeing 737-900
→
8/5/2026
1h 59m
No alerts
Replay Analysis
N15751BOEING Boeing 737-700
→
8/4/2026
1h 11m
No alerts
Replay Analysis
N76505BOEING Boeing 737-800
→
8/4/2026
1h 42m
No alerts
Replay Analysis
N76505BOEING Boeing 737-800
→
8/4/2026
32m
No alerts
Replay Analysis
N14228BOEING Boeing 737-800
→
8/3/2026
1h 23m
No alerts
Replay Analysis
N38257BOEING Boeing 737-800
→
8/3/2026
1h 53m
△ Low approach-stability score
Replay Analysis
N38257BOEING Boeing 737-800
→
8/3/2026
5m
No alerts
Replay Analysis
N37449BOEING Boeing 737 MAX 9
→
8/2/2026
1h 25m
No alerts
Replay Analysis
N37449BOEING Boeing 737 MAX 9
→
8/2/2026
11m
No alerts
Replay Analysis
N34460BOEING Boeing 737-900
→
8/2/2026
1h 52m
No alerts
Replay Analysis
N37290BOEING Boeing 737-800
→
7/31/2026
1h 33m
No alerts
Replay Analysis
N37263BOEING Boeing 737-800
→
7/31/2026
7m
No alerts
Replay Analysis
N37263BOEING Boeing 737-800
→
7/31/2026
1h 50m
No alerts
Replay Analysis
N77598BOEING Boeing 737 MAX 9
→
7/30/2026
1h 14m
No alerts
Replay Analysis
N76508BOEING Boeing 737-800
→
7/30/2026
1h 51m
No alerts
Replay Analysis
N13248BOEING Boeing 737-800
→
7/29/2026
1h 25m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window