Flight Status & Tracker

UAL8121

WILMINGTON TRUST CO TRUSTEE · SFO → ORD · Last tracked Oct 8, 2026

UAL8121 is a flight number operated by WILMINGTON TRUST CO TRUSTEE between San Francisco International Airport (KSFO) and Chicago O'Hare International Airport (KORD). SkyMeter last tracked UAL8121 on October 8, 2026. The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 2h 26m. SkyMeter has observed 49 legs of this flight number via ADS-B.

SkyMeter tracks historical flight activity from ADS-B data — this is not a live gate-to-gate status feed.

✈
FLIGHTS
49
last 90 days
⏱
AVG DURATION
2h 26m
tracked time
📅
SERVICE PERIOD
5/29/2025 → 10/8/2026
first → last seen
🗺
ROUTES / TYPES
33 / 7
city pairs · airframes
⚠
INCIDENT RATE
2.0%
1 flagged

Routes flown

By count · last 90 days

10
KSFO → KORD
5
avg 4h 3m · San Francisco → Chicago O'Hare
KFLL → KIAD
4
avg 2h 18m · Fort Lauderdale Hollywood → Washington Dulles
KLAX → KBOS
3
avg 5h 35m · Los Angeles → General Edward Lawrence Logan
KEWR → KIAH
2
avg 3h 11m · Newark Liberty → George Bush Intercontinental Houston
KSFO → KLAS
2
avg 1h 37m · San Francisco → McCarran
KLAX → KACV
1
avg 1h 13m · Los Angeles → California Redwood Coast-Humboldt County
KDEN → KLGA
1
avg 3h 55m · Denver → La Guardia
KACV → KSFO
1
avg 50m · California Redwood Coast-Humboldt County → San Francisco
KSFO → KBUR
1
avg 1h 6m · San Francisco → Bob Hope
KORD → KPHX
1
avg 3h 10m · Chicago O'Hare → Phoenix Sky Harbor

Aircraft types

Equipment used on this number

7
B39M BOEING Boeing 737 MAX 9
23
B753 BOEING Boeing 757-300
13
B739 BOEING Boeing 737-900
10
B738 BOEING Boeing 737-800
8
B38M BOEING Boeing 737 MAX 8
4
A320 AIRBUS Airbus A320
3
A319 AIRBUS Airbus A319
2

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
1
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 UAL8121

30
N443UAAIRBUS Airbus A320
→
10/8/2026
1h 5m
No alerts
Replay Analysis
N17465BOEING Boeing 737 MAX 9
→
10/8/2026
4h 29m
No alerts
Replay Analysis
N17465BOEING Boeing 737 MAX 9
→
10/8/2026
5h 7m
No alerts
Replay Analysis
N17465BOEING Boeing 737 MAX 9
→
10/8/2026
37m
No alerts
Replay Analysis
N17406BOEING Boeing 737 MAX 9
→
10/3/2026
1h 38m
No alerts
Replay Analysis
N485UAAIRBUS Airbus A320
→
10/2/2026
49m
No alerts
Replay Analysis
N27519BOEING Boeing 737 MAX 9
→
10/2/2026
4h 48m
No alerts
Replay Analysis
N27519BOEING Boeing 737 MAX 9
→
10/2/2026
54m
No alerts
Replay Analysis
N27519BOEING Boeing 737 MAX 9
→
10/2/2026
5h 43m
No alerts
Replay Analysis
N66897BOEING Boeing 737-900
→
9/29/2026
2h 15m
No alerts
Replay Analysis
N37562BOEING Boeing 737 MAX 9
→
9/29/2026
5h 55m
No alerts
Replay Analysis
N47470BOEING Boeing 737 MAX 9
→
9/28/2026
4h 1m
No alerts
Replay Analysis
N61882BOEING Boeing 737-900
→
9/17/2026
3h 10m
No alerts
Replay Analysis
N47457BOEING Boeing 737 MAX 9
→
9/16/2026
2h 24m
No alerts
Replay Analysis
N17420BOEING Boeing 737 MAX 9
→
9/5/2026
4h 41m
No alerts
Replay Analysis
N17420BOEING Boeing 737 MAX 9
→
9/5/2026
48m
No alerts
Replay Analysis
N17420BOEING Boeing 737 MAX 9
→
9/5/2026
5h 30m
No alerts
Replay Analysis
N37554BOEING Boeing 737 MAX 9
→
9/4/2026
1h 34m
No alerts
Replay Analysis
N77871BOEING Boeing 757-300
→
9/2/2026
5m
No alerts
Replay Analysis
N77871BOEING Boeing 757-300
→
9/2/2026
3h 46m
No alerts
Replay Analysis
N57852BOEING Boeing 757-300
→
9/1/2026
12m
No alerts
Replay Analysis
N57852BOEING Boeing 757-300
→
9/1/2026
4h 11m
No alerts
Replay Analysis
N455UAAIRBUS Airbus A320
→
8/30/2026
2h 3m
↘ Diverted (inferred)
Replay Analysis
N75851BOEING Boeing 757-300
→
8/29/2026
6m
No alerts
Replay Analysis
N75851BOEING Boeing 757-300
→
8/29/2026
5m
No alerts
Replay Analysis
N75851BOEING Boeing 757-300
→
8/29/2026
3h 57m
No alerts
Replay Analysis
N75858BOEING Boeing 757-300
→
8/28/2026
4h 12m
No alerts
Replay Analysis
N17594BOEING Boeing 737-900
→
8/28/2026
8m
No alerts
Replay Analysis
N17594BOEING Boeing 737-900
→
8/28/2026
1h 37m
No alerts
Replay Analysis
N77871BOEING Boeing 757-300
→
8/27/2026
4h 6m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window