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 25m. SkyMeter has observed 185 legs of this flight number via ADS-B.

✈
FLIGHTS
185
last 90 days
⏱
AVG DURATION
1h 25m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 07/19/2026
first → last seen
🗺
ROUTES / TYPES
19 / 6
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

10
KDEN → KSTL
57
avg 1h 57m · Denver → St Louis Lambert
KSTL → KORD
36
avg 1h 8m · St Louis Lambert → Chicago O'Hare
KSBP → KSFO
20
avg 49m · San Luis County → San Francisco
KSFO → KAUS
14
avg 3h 32m · San Francisco → Austin Bergstrom
KHAF → KAUS
2
avg 3h 38m · Half Moon Bay → Austin Bergstrom
40IS → KORD
1
avg 7m · Children's Memorial Hospital Heliport → Chicago O'Hare
LL35 → KORD
1
avg 14m · Chicago Fire Dept Air Sea Rescue Heliport → Chicago O'Hare
IS12 → KORD
1
avg 17m · Urso Heliport → Chicago O'Hare
23IL → KORD
1
avg 5m · Amita Health-Alexian Brothers Medical Center Heliport → Chicago O'Hare
IS14 → KORD
1
avg 10m · Addison Fire Department Station 3 Heliport → Chicago O'Hare

Aircraft types

Equipment used on this number

6
A319 AIRBUS Airbus A319
138
A320 AIRBUS Airbus A320
33
B39M BOEING Boeing 737 MAX 9
18
A21N AIRBUS Airbus A321 Neo
2
B38M BOEING Boeing 737 MAX 8
1
B739 BOEING Boeing 737-900
1

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
N494UAAIRBUS Airbus A320
→
07/19/2026
1h 2m
No alerts
Replay Analysis
N494UAAIRBUS Airbus A320
→
07/19/2026
1h 59m
No alerts
Replay Analysis
N840UAAIRBUS Airbus A319
→
07/19/2026
1h 46m
No alerts
Replay Analysis
N840UAAIRBUS Airbus A319
→
07/18/2026
2h 1m
No alerts
Replay Analysis
N815UAAIRBUS Airbus A319
→
07/18/2026
1h 22m
No alerts
Replay Analysis
N815UAAIRBUS Airbus A319
→
07/17/2026
7m
No alerts
Replay Analysis
N815UAAIRBUS Airbus A319
→
07/17/2026
5m
No alerts
Replay Analysis
N815UAAIRBUS Airbus A319
→
07/17/2026
1h 59m
No alerts
Replay Analysis
N822UAAIRBUS Airbus A319
→
07/17/2026
5m
No alerts
Replay Analysis
N822UAAIRBUS Airbus A319
→
07/16/2026
1h 5m
No alerts
Replay Analysis
N822UAAIRBUS Airbus A319
→
07/16/2026
2h 14m
No alerts
Replay Analysis
N443UAAIRBUS Airbus A320
→
07/16/2026
8m
No alerts
Replay Analysis
N443UAAIRBUS Airbus A320
→
07/15/2026
1h 2m
No alerts
Replay Analysis
N443UAAIRBUS Airbus A320
→
07/15/2026
2h 2m
No alerts
Replay Analysis
N872UAAIRBUS Airbus A319
→
07/14/2026
1h 13m
No alerts
Replay Analysis
N872UAAIRBUS Airbus A319
→
07/14/2026
2h 3m
No alerts
Replay Analysis
N844UAAIRBUS Airbus A319
→
07/14/2026
7m
No alerts
Replay Analysis
N844UAAIRBUS Airbus A319
→
07/13/2026
54m
No alerts
Replay Analysis
N844UAAIRBUS Airbus A319
→
07/13/2026
2h 15m
No alerts
Replay Analysis
N448UAAIRBUS Airbus A320
→
07/13/2026
55m
No alerts
Replay Analysis
N448UAAIRBUS Airbus A320
→
07/12/2026
1h 48m
No alerts
Replay Analysis
N847UAAIRBUS Airbus A319
→
07/11/2026
1h 2m
No alerts
Replay Analysis
N847UAAIRBUS Airbus A319
→
07/11/2026
1h 55m
No alerts
Replay Analysis
N854UAAIRBUS Airbus A319
→
07/11/2026
1h 5m
No alerts
Replay Analysis
N854UAAIRBUS Airbus A319
→
07/10/2026
1h 0m
No alerts
Replay Analysis
N854UAAIRBUS Airbus A319
→
07/10/2026
2h 5m
No alerts
Replay Analysis
N854UAAIRBUS Airbus A319
→
07/10/2026
1h 58m
No alerts
Replay Analysis
N884UAAIRBUS Airbus A319
→
07/10/2026
1h 13m
No alerts
Replay Analysis
N884UAAIRBUS Airbus A319
→
07/09/2026
39m
No alerts
Replay Analysis
N884UAAIRBUS Airbus A319
→
07/09/2026
1h 53m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window