UAL2421

UNITED AIRLINES INC · TPA → IAH

UAL2421 is operated by UNITED AIRLINES INC between Tampa International Airport (KTPA) and George Bush Intercontinental Houston Airport (KIAH). The flight is most often flown by a BOEING Boeing 737 MAX 8. Typical block time is 1h 43m. SkyMeter has observed 92 legs of this flight number via ADS-B.

✈
FLIGHTS
92
last 90 days
⏱
AVG DURATION
1h 43m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/17/2026
first → last seen
🗺
ROUTES / TYPES
7 / 4
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

4
KTPA → KIAH
43
avg 2h 5m · Tampa → George Bush Intercontinental Houston
KSFO → KLAS
28
avg 1h 31m · San Francisco → McCarran
KMSY → KSFO
4
avg 4h 10m · Louis Armstrong New Orleans → San Francisco
KHAF → KLAS
2
avg 1h 35m · Half Moon Bay → McCarran

Aircraft types

Equipment used on this number

4
B38M BOEING Boeing 737 MAX 8
45
B739 BOEING Boeing 737-900
24
B738 BOEING Boeing 737-800
17
B39M BOEING Boeing 737 MAX 9
12

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 UAL2421

30
N66837BOEING Boeing 737-900
→
08/17/2026
4h 0m
No alerts
Replay Analysis
N28457BOEING Boeing 737-900
→
08/16/2026
4h 20m
No alerts
Replay Analysis
N39416BOEING Boeing 737-900
→
08/14/2026
4h 15m
No alerts
Replay Analysis
N75429BOEING Boeing 737-900
→
08/13/2026
4h 5m
No alerts
Replay Analysis
N27519BOEING Boeing 737 MAX 9
→
08/10/2026
2h 15m
No alerts
Replay Analysis
N68802BOEING Boeing 737-900
→
08/08/2026
2h 0m
No alerts
Replay Analysis
N27287BOEING Boeing 737 MAX 8
→
08/07/2026
1h 59m
No alerts
Replay Analysis
N47357BOEING Boeing 737 MAX 8
→
08/06/2026
1h 59m
No alerts
Replay Analysis
N36472BOEING Boeing 737-900
→
08/05/2026
1h 42m
No alerts
Replay Analysis
N37547BOEING Boeing 737 MAX 9
→
08/04/2026
1h 57m
No alerts
Replay Analysis
N27260BOEING Boeing 737 MAX 8
→
08/03/2026
2h 6m
No alerts
Replay Analysis
N17333BOEING Boeing 737 MAX 8
→
08/02/2026
2h 16m
No alerts
Replay Analysis
N37325BOEING Boeing 737 MAX 8
→
07/31/2026
1h 58m
No alerts
Replay Analysis
N37297BOEING Boeing 737 MAX 8
→
07/30/2026
1h 44m
No alerts
Replay Analysis
N27509BOEING Boeing 737 MAX 9
→
07/29/2026
2h 7m
No alerts
Replay Analysis
N61881BOEING Boeing 737-900
→
07/28/2026
2h 2m
No alerts
Replay Analysis
N17328BOEING Boeing 737 MAX 8
→
07/27/2026
2h 9m
No alerts
Replay Analysis
N17328BOEING Boeing 737 MAX 8
→
07/26/2026
2h 4m
No alerts
Replay Analysis
N12218BOEING Boeing 737-800
→
07/25/2026
1h 59m
No alerts
Replay Analysis
N69810BOEING Boeing 737-900
→
07/24/2026
1h 49m
No alerts
Replay Analysis
N17301BOEING Boeing 737 MAX 8
→
07/23/2026
2h 22m
No alerts
Replay Analysis
N14235BOEING Boeing 737-800
→
07/22/2026
2h 7m
No alerts
Replay Analysis
N75436BOEING Boeing 737-900
→
07/21/2026
1h 55m
No alerts
Replay Analysis
N17356BOEING Boeing 737 MAX 8
→
07/20/2026
2h 11m
No alerts
Replay Analysis
N53441BOEING Boeing 737-900
→
07/19/2026
2h 5m
No alerts
Replay Analysis
N79521BOEING Boeing 737-800
→
07/18/2026
2h 2m
No alerts
Replay Analysis
N27276BOEING Boeing 737 MAX 8
→
07/17/2026
2h 18m
No alerts
Replay Analysis
N17337BOEING Boeing 737 MAX 8
→
07/16/2026
2h 2m
No alerts
Replay Analysis
N77538BOEING Boeing 737-800
→
07/15/2026
1h 52m
No alerts
Replay Analysis
N37437BOEING Boeing 737-900
→
07/14/2026
2h 9m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window