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 59m. SkyMeter has observed 89 legs of this flight number via ADS-B.

✈
FLIGHTS
89
last 90 days
⏱
AVG DURATION
1h 59m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 8/12/2026
first → last seen
🗺
ROUTES / TYPES
6 / 5
city pairs · airframes
⚠
INCIDENT RATE
2.2%
2 flagged

Routes flown

By count · last 90 days

5
KBNA → KORD
43
avg 1h 27m · Nashville → Chicago O'Hare
KBOI → KORD
32
avg 3h 10m · Boise Air Terminal/Gowen Field → Chicago O'Hare
KORD → KCMH
7
avg 56m · 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

5
A320 AIRBUS Airbus A320
45
A319 AIRBUS Airbus A319
36
B737 BOEING Boeing 737-700
8
A21N AIRBUS Airbus A321 Neo
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
N37548BOEING Boeing 737 MAX 9
→
8/12/2026
1h 8m
No alerts
Replay Analysis
N14529AIRBUS Airbus A321 Neo
→
8/11/2026
2h 8m
No alerts
Replay Analysis
N484UAAIRBUS Airbus A320
→
8/10/2026
1h 16m
No alerts
Replay Analysis
N441UAAIRBUS Airbus A320
→
8/9/2026
1h 18m
No alerts
Replay Analysis
N451UAAIRBUS Airbus A320
→
8/8/2026
1h 31m
No alerts
Replay Analysis
N476UAAIRBUS Airbus A320
→
8/7/2026
1h 28m
No alerts
Replay Analysis
N17719BOEING Boeing 737-700
→
8/6/2026
1h 22m
No alerts
Replay Analysis
N475UAAIRBUS Airbus A320
→
8/5/2026
1h 38m
No alerts
Replay Analysis
N461UAAIRBUS Airbus A320
→
8/4/2026
1h 24m
No alerts
Replay Analysis
N459UAAIRBUS Airbus A320
→
8/3/2026
1h 35m
No alerts
Replay Analysis
N431UAAIRBUS Airbus A320
→
8/1/2026
1h 26m
No alerts
Replay Analysis
N436UAAIRBUS Airbus A320
→
7/31/2026
1h 30m
No alerts
Replay Analysis
N24706BOEING Boeing 737-700
→
7/30/2026
1h 19m
No alerts
Replay Analysis
N438UAAIRBUS Airbus A320
→
7/29/2026
1h 36m
No alerts
Replay Analysis
N438UAAIRBUS Airbus A320
→
7/28/2026
1h 30m
No alerts
Replay Analysis
N487UAAIRBUS Airbus A320
→
7/27/2026
1h 34m
No alerts
Replay Analysis
N476UAAIRBUS Airbus A320
→
7/26/2026
1h 34m
No alerts
Replay Analysis
N440UAAIRBUS Airbus A320
→
7/25/2026
1h 50m
No alerts
Replay Analysis
N481UAAIRBUS Airbus A320
→
7/24/2026
1h 16m
No alerts
Replay Analysis
N15751BOEING Boeing 737-700
→
7/23/2026
1h 29m
No alerts
Replay Analysis
N495UAAIRBUS Airbus A320
→
7/22/2026
1h 31m
No alerts
Replay Analysis
N455UAAIRBUS Airbus A320
→
7/21/2026
1h 31m
No alerts
Replay Analysis
N483UAAIRBUS Airbus A320
→
7/20/2026
1h 26m
No alerts
Replay Analysis
N873UAAIRBUS Airbus A319
→
7/19/2026
1h 28m
No alerts
Replay Analysis
N484UAAIRBUS Airbus A320
→
7/18/2026
1h 22m
No alerts
Replay Analysis
N879UAAIRBUS Airbus A319
→
7/17/2026
1h 22m
No alerts
Replay Analysis
N23708BOEING Boeing 737-700
→
7/16/2026
1h 27m
No alerts
Replay Analysis
N478UAAIRBUS Airbus A320
→
7/15/2026
1h 16m
No alerts
Replay Analysis
N483UAAIRBUS Airbus A320
→
7/14/2026
1h 11m
No alerts
Replay Analysis
N465UAAIRBUS Airbus A320
→
7/13/2026
9m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window