UAL2104 is operated by UNITED AIRLINES INC, ATTN TREASURER between St Louis Lambert International Airport (KSTL) and Newark Liberty International Airport (KEWR). The flight is most often flown by a BOEING Boeing 737 MAX 8. Typical block time is 1h 59m. SkyMeter has observed 24 legs of this flight number via ADS-B.

✈
FLIGHTS
24
last 90 days
⏱
AVG DURATION
1h 59m
tracked time
📅
SERVICE PERIOD
04/17/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
5 / 4
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

4
KSTL → KEWR
10
avg 2h 6m · St Louis Lambert → Newark Liberty
KORD → KBOS
7
avg 2h 0m · Chicago O'Hare → General Edward Lawrence Logan
KORD → KBDL
5
avg 1h 47m · Chicago O'Hare → Bradley
KCHS → KDEN
1
avg 3h 38m · Charleston Air Force Base-International → Denver

Aircraft types

Equipment used on this number

4
B38M BOEING Boeing 737 MAX 8
9
B39M BOEING Boeing 737 MAX 9
9
B739 BOEING Boeing 737-900
5
A319 AIRBUS Airbus A319
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 24 operations of UAL2104

24
N37313BOEING Boeing 737 MAX 8
→
06/03/2026
2h 17m
No alerts
Replay Analysis
N17336BOEING Boeing 737 MAX 8
→
06/02/2026
2h 5m
No alerts
Replay Analysis
N77578BOEING Boeing 737 MAX 9
→
06/01/2026
1h 55m
No alerts
Replay Analysis
N27269BOEING Boeing 737 MAX 8
→
05/31/2026
2h 13m
No alerts
Replay Analysis
N27334BOEING Boeing 737 MAX 8
→
05/29/2026
2h 12m
No alerts
Replay Analysis
N27366BOEING Boeing 737 MAX 8
→
05/28/2026
2h 2m
No alerts
Replay Analysis
N37325BOEING Boeing 737 MAX 8
→
05/26/2026
2h 3m
No alerts
Replay Analysis
N37348BOEING Boeing 737 MAX 8
→
05/25/2026
2h 1m
No alerts
Replay Analysis
N47369BOEING Boeing 737 MAX 8
→
05/24/2026
2h 18m
No alerts
Replay Analysis
N47360BOEING Boeing 737 MAX 8
→
05/23/2026
1h 59m
No alerts
Replay Analysis
N832UAAIRBUS Airbus A319
→
05/21/2026
3h 38m
No alerts
Replay Analysis
N66808BOEING Boeing 737-900
→
05/18/2026
1h 50m
No alerts
Replay Analysis
N39450BOEING Boeing 737-900
→
05/17/2026
1h 41m
No alerts
Replay Analysis
N28457BOEING Boeing 737-900
→
05/16/2026
1h 38m
No alerts
Replay Analysis
N28457BOEING Boeing 737-900
→
05/16/2026
5m
No alerts
Replay Analysis
N68843BOEING Boeing 737-900
→
05/15/2026
1h 51m
No alerts
Replay Analysis
N17583BOEING Boeing 737 MAX 9
→
05/14/2026
1h 55m
No alerts
Replay Analysis
N27519BOEING Boeing 737 MAX 9
→
04/25/2026
2h 3m
No alerts
Replay Analysis
N37528BOEING Boeing 737 MAX 9
→
04/24/2026
2h 10m
No alerts
Replay Analysis
N17574BOEING Boeing 737 MAX 9
→
04/23/2026
1h 52m
No alerts
Replay Analysis
N47570BOEING Boeing 737 MAX 9
→
04/20/2026
1h 50m
No alerts
Replay Analysis
N37542BOEING Boeing 737 MAX 9
→
04/19/2026
1h 59m
No alerts
Replay Analysis
N67501BOEING Boeing 737 MAX 9
→
04/18/2026
2h 3m
No alerts
Replay Analysis
N47569BOEING Boeing 737 MAX 9
→
04/17/2026
2h 3m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window