UAL451 is operated by UNITED AIRLINES INC between Nashville International Airport (KBNA) and Chicago O'Hare International Airport (KORD). The flight is most often flown by a AIRBUS Airbus A320. Typical block time is 1h 56m. SkyMeter has observed 87 legs of this flight number via ADS-B.

✈
FLIGHTS
87
last 90 days
⏱
AVG DURATION
1h 56m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/21/2026
first → last seen
🗺
ROUTES / TYPES
6 / 8
city pairs · airframes
⚠
INCIDENT RATE
2.3%
2 flagged

Routes flown

By count · last 90 days

5
KBNA → KORD
43
avg 1h 27m · Nashville → Chicago O'Hare
KBOI → KORD
29
avg 3h 9m · Boise Air Terminal/Gowen Field → Chicago O'Hare
KORD → KCMH
8
avg 59m · Chicago O'Hare → John Glenn Columbus
KORD → KMCO
1
avg 2h 8m · Chicago O'Hare → Orlando
KBOI → KPWK
1
avg 3h 17m · Boise Air Terminal/Gowen Field → Chicago Executive

Aircraft types

Equipment used on this number

8
A320 AIRBUS Airbus A320
40
A319 AIRBUS Airbus A319
34
B737 BOEING Boeing 737-700
7
B738 BOEING Boeing 737-800
4
A21N AIRBUS Airbus A321 Neo
1
B38M BOEING Boeing 737 MAX 8
1
B739 BOEING Boeing 737-900
1
B39M BOEING Boeing 737 MAX 9
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
2
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 UAL451

30
N62894BOEING Boeing 737-900
→
08/21/2026
1h 6m
No alerts
Replay Analysis
N17326BOEING Boeing 737 MAX 8
→
08/18/2026
55m
No alerts
Replay Analysis
N76505BOEING Boeing 737-800
→
08/17/2026
55m
No alerts
Replay Analysis
N76505BOEING Boeing 737-800
→
08/16/2026
1h 1m
No alerts
Replay Analysis
N461UAAIRBUS Airbus A320
→
08/15/2026
1h 18m
No alerts
Replay Analysis
N37263BOEING Boeing 737-800
→
08/14/2026
43m
No alerts
Replay Analysis
N76505BOEING Boeing 737-800
→
08/13/2026
48m
No alerts
Replay Analysis
N37548BOEING Boeing 737 MAX 9
→
08/12/2026
1h 8m
No alerts
Replay Analysis
N14529AIRBUS Airbus A321 Neo
→
08/11/2026
2h 8m
No alerts
Replay Analysis
N484UAAIRBUS Airbus A320
→
08/10/2026
1h 16m
No alerts
Replay Analysis
N441UAAIRBUS Airbus A320
→
08/09/2026
1h 18m
No alerts
Replay Analysis
N451UAAIRBUS Airbus A320
→
08/08/2026
1h 31m
No alerts
Replay Analysis
N476UAAIRBUS Airbus A320
→
08/07/2026
1h 28m
No alerts
Replay Analysis
N17719BOEING Boeing 737-700
→
08/06/2026
1h 22m
No alerts
Replay Analysis
N475UAAIRBUS Airbus A320
→
08/05/2026
1h 38m
No alerts
Replay Analysis
N461UAAIRBUS Airbus A320
→
08/04/2026
1h 24m
No alerts
Replay Analysis
N459UAAIRBUS Airbus A320
→
08/03/2026
1h 35m
No alerts
Replay Analysis
N431UAAIRBUS Airbus A320
→
08/01/2026
1h 26m
No alerts
Replay Analysis
N436UAAIRBUS Airbus A320
→
07/31/2026
1h 30m
No alerts
Replay Analysis
N24706BOEING Boeing 737-700
→
07/30/2026
1h 19m
No alerts
Replay Analysis
N438UAAIRBUS Airbus A320
→
07/29/2026
1h 36m
No alerts
Replay Analysis
N438UAAIRBUS Airbus A320
→
07/28/2026
1h 30m
No alerts
Replay Analysis
N487UAAIRBUS Airbus A320
→
07/27/2026
1h 34m
No alerts
Replay Analysis
N476UAAIRBUS Airbus A320
→
07/26/2026
1h 34m
No alerts
Replay Analysis
N440UAAIRBUS Airbus A320
→
07/25/2026
1h 50m
No alerts
Replay Analysis
N481UAAIRBUS Airbus A320
→
07/24/2026
1h 16m
No alerts
Replay Analysis
N15751BOEING Boeing 737-700
→
07/23/2026
1h 29m
No alerts
Replay Analysis
N495UAAIRBUS Airbus A320
→
07/22/2026
1h 31m
No alerts
Replay Analysis
N455UAAIRBUS Airbus A320
→
07/21/2026
1h 31m
No alerts
Replay Analysis
N483UAAIRBUS Airbus A320
→
07/20/2026
1h 26m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window