UAL1639

UNITED AIRLINES INC · DEN → STL

UAL1639 is operated by UNITED AIRLINES INC between Denver International Airport (KDEN) and St Louis Lambert International Airport (KSTL). The flight is most often flown by a AIRBUS Airbus A319. Typical block time is 1h 21m. SkyMeter has observed 176 legs of this flight number via ADS-B.

✈
FLIGHTS
176
last 90 days
⏱
AVG DURATION
1h 21m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 9/6/2026
first → last seen
🗺
ROUTES / TYPES
13 / 3
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

9
KDEN → KSTL
77
avg 1h 56m · Denver → St Louis Lambert
KSTL → KORD
35
avg 1h 8m · St Louis Lambert → Chicago O'Hare
LL95 → KORD
2
avg 17m · Clarke Heliport → Chicago O'Hare
IL70 → KORD
2
avg 11m · Wgn-Tv Heliport → Chicago O'Hare
40IS → KORD
1
avg 7m · Children's Memorial Hospital Heliport → Chicago O'Hare
IS14 → KORD
1
avg 10m · Addison Fire Department Station 3 Heliport → Chicago O'Hare
23IL → KORD
1
avg 5m · Amita Health-Alexian Brothers Medical Center Heliport → Chicago O'Hare
IS25 → KORD
1
avg 26m · B & L Heliport → Chicago O'Hare
KDEN → KORD
1
avg 5h 21m · Denver → Chicago O'Hare

Aircraft types

Equipment used on this number

3
A319 AIRBUS Airbus A319
148
A320 AIRBUS Airbus A320
52
A21N AIRBUS Airbus A321 Neo
2

Safety profile

Flagged flights · last 90 days

Go-arounds
0
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 UAL1639

30
N437UAAIRBUS Airbus A320
→
9/6/2026
2h 0m
No alerts
Replay Analysis
N488UAAIRBUS Airbus A320
→
9/5/2026
1h 58m
No alerts
Replay Analysis
N431UAAIRBUS Airbus A320
→
9/4/2026
11m
No alerts
Replay Analysis
N431UAAIRBUS Airbus A320
→
9/4/2026
1h 53m
No alerts
Replay Analysis
N4901UAIRBUS Airbus A320
→
9/2/2026
1h 54m
No alerts
Replay Analysis
N435UAAIRBUS Airbus A320
→
9/1/2026
1h 57m
No alerts
Replay Analysis
N493UAAIRBUS Airbus A320
→
8/31/2026
1h 51m
No alerts
Replay Analysis
N434UAAIRBUS Airbus A320
→
8/30/2026
1h 54m
No alerts
Replay Analysis
N434UAAIRBUS Airbus A320
→
8/30/2026
10m
No alerts
Replay Analysis
N434UAAIRBUS Airbus A320
→
8/30/2026
13m
No alerts
Replay Analysis
N439UAAIRBUS Airbus A320
→
8/29/2026
1h 54m
No alerts
Replay Analysis
N494UAAIRBUS Airbus A320
→
8/28/2026
1h 56m
No alerts
Replay Analysis
N431UAAIRBUS Airbus A320
→
8/27/2026
1h 57m
No alerts
Replay Analysis
N436UAAIRBUS Airbus A320
→
8/26/2026
1h 54m
No alerts
Replay Analysis
N488UAAIRBUS Airbus A320
→
8/25/2026
2h 14m
No alerts
Replay Analysis
N445UAAIRBUS Airbus A320
→
8/24/2026
1h 46m
No alerts
Replay Analysis
N431UAAIRBUS Airbus A320
→
8/24/2026
1h 59m
No alerts
Replay Analysis
N431UAAIRBUS Airbus A320
→
8/23/2026
16m
No alerts
Replay Analysis
N473UAAIRBUS Airbus A320
→
8/23/2026
39m
No alerts
Replay Analysis
N460UAAIRBUS Airbus A320
→
8/22/2026
1h 38m
No alerts
Replay Analysis
N438UAAIRBUS Airbus A320
→
8/21/2026
1h 54m
No alerts
Replay Analysis
N458UAAIRBUS Airbus A320
→
8/20/2026
1h 39m
No alerts
Replay Analysis
N458UAAIRBUS Airbus A320
→
8/20/2026
10m
No alerts
Replay Analysis
N477UAAIRBUS Airbus A320
→
8/19/2026
1h 38m
No alerts
Replay Analysis
N493UAAIRBUS Airbus A320
→
8/18/2026
1h 59m
No alerts
Replay Analysis
N445UAAIRBUS Airbus A320
→
8/17/2026
1h 51m
No alerts
Replay Analysis
N472UAAIRBUS Airbus A320
→
8/16/2026
2h 0m
No alerts
Replay Analysis
N497UAAIRBUS Airbus A320
→
8/16/2026
24m
No alerts
Replay Analysis
N497UAAIRBUS Airbus A320
→
8/15/2026
2h 28m
No alerts
Replay Analysis
N497UAAIRBUS Airbus A320
→
8/15/2026
2h 3m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window