UAL3878

UNITED AIRLINES INC · IAB → DEN

UAL3878 is operated by UNITED AIRLINES INC between Mc Connell Air Force Base (KIAB) and Denver International Airport (KDEN). The flight is most often flown by a BOEING Boeing 737-900. Typical block time is 2h 15m. SkyMeter has observed 24 legs of this flight number via ADS-B.

✈
FLIGHTS
24
last 90 days
⏱
AVG DURATION
2h 15m
tracked time
📅
SERVICE PERIOD
5/31/2025 → 8/12/2026
first → last seen
🗺
ROUTES / TYPES
20 / 10
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

10
KIAB → KDEN
2
avg 1h 14m · Mc Connell Air Force Base → Denver
KRFD → KORD
2
avg 25m · Chicago Rockford → Chicago O'Hare
KIAH → KMLB
2
avg 1h 56m · George Bush Intercontinental Houston → Melbourne
KORD → KIAB
2
avg 1h 28m · Chicago O'Hare → Mc Connell Air Force Base
KRFD → KDEN
1
avg 2h 17m · Chicago Rockford → Denver
KGSO → KORD
1
avg 1h 26m · Piedmont Triad → Chicago O'Hare
KEWR → KINT
1
avg 1h 20m · Newark Liberty → Smith Reynolds
5NC7 → KORD
1
avg 1h 36m · Nc Baptist Hospital Heliport → Chicago O'Hare
KEWR → KMCO
1
avg 3h 24m · Newark Liberty → Orlando
KMLB → KEWR
1
avg 2h 14m · Melbourne → Newark Liberty

Aircraft types

Equipment used on this number

10
B739 BOEING Boeing 737-900
8
B738 BOEING Boeing 737-800
4
A21N AIRBUS Airbus A321 Neo
3
B38M BOEING Boeing 737 MAX 8
3
B737 BOEING Boeing 737-700
2
B789 BOEING Boeing 787-9 Dreamliner
1
B753 BOEING Boeing 757-300
1
B39M BOEING Boeing 737 MAX 9
1
A319 AIRBUS Airbus A319
1
B752 BOEING Boeing 757-200
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 UAL3878

30
N86534BOEING Boeing 737-800
→
8/12/2026
1h 3m
No alerts
Replay Analysis
N28457BOEING Boeing 737-900
→
8/7/2026
1h 24m
No alerts
Replay Analysis
N34562AIRBUS Airbus A321 Neo
→
8/5/2026
2h 14m
No alerts
Replay Analysis
N14566AIRBUS Airbus A321 Neo
→
8/3/2026
2h 33m
No alerts
Replay Analysis
N37518BOEING Boeing 737 MAX 9
→
7/26/2026
2h 37m
No alerts
Replay Analysis
N13716BOEING Boeing 737-700
→
7/24/2026
2h 1m
No alerts
Replay Analysis
N15969BOEING Boeing 787-9 Dreamliner
→
7/20/2026
11h 4m
No alerts
Replay Analysis
N12125BOEING Boeing 757-200
→
7/17/2026
2h 25m
No alerts
Replay Analysis
N828UAAIRBUS Airbus A319
→
7/13/2026
3h 2m
No alerts
Replay Analysis
N24729BOEING Boeing 737-700
→
7/10/2026
3h 38m
No alerts
Replay Analysis
N63820BOEING Boeing 737-900
→
7/2/2026
1h 20m
No alerts
Replay Analysis
N18223BOEING Boeing 737-800
→
6/30/2026
24m
No alerts
Replay Analysis
N17301BOEING Boeing 737 MAX 8
→
6/27/2026
2h 21m
No alerts
Replay Analysis
N17301BOEING Boeing 737 MAX 8
→
6/26/2026
1h 2m
No alerts
Replay Analysis
N17301BOEING Boeing 737 MAX 8
→
6/26/2026
3h 24m
No alerts
Replay Analysis
N18223BOEING Boeing 737-800
→
6/23/2026
2h 17m
No alerts
Replay Analysis
N13227BOEING Boeing 737-800
→
6/20/2026
26m
No alerts
Replay Analysis
N53442BOEING Boeing 737-900
→
6/17/2026
1h 12m
No alerts
Replay Analysis
N14549AIRBUS Airbus A321 Neo
→
6/8/2026
1h 50m
No alerts
Replay Analysis
N73860BOEING Boeing 757-300
→
6/4/2026
1h 26m
No alerts
Replay Analysis
N75426BOEING Boeing 737-900
→
6/2/2026
1h 28m
No alerts
Replay Analysis
N492UAAIRBUS Airbus A320
→
5/29/2026
1h 36m
No alerts
Replay Analysis
N75432BOEING Boeing 737-900
→
5/26/2026
2h 37m
No alerts
Replay Analysis
N38424BOEING Boeing 737-900
→
5/23/2026
1h 27m
No alerts
Replay Analysis
N37470BOEING Boeing 737-900
→
5/19/2026
1h 17m
No alerts
Replay Analysis
N37456BOEING Boeing 737-900
→
5/15/2026
1h 17m
No alerts
Replay Analysis
N25705BOEING Boeing 737-700
→
5/11/2026
32m
No alerts
Replay Analysis
N67134BOEING Boeing 757-200
→
5/10/2026
2h 9m
No alerts
Replay Analysis
N17128BOEING Boeing 757-200
→
5/9/2026
2h 31m
No alerts
Replay Analysis
N57855BOEING Boeing 757-300
→
4/30/2026
2h 15m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window