Flight Status & Tracker

UAL2129

UNITED AIRLINES INC · SAN → IAD · Last tracked Oct 17, 2026

UAL2129 is a flight number operated by UNITED AIRLINES INC between San Diego International Airport (KSAN) and Washington Dulles International Airport (KIAD). SkyMeter last tracked UAL2129 on October 17, 2026. The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 4h 45m. SkyMeter has observed 76 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
76
last 90 days
⏱
AVG DURATION
4h 45m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 10/17/2026
first → last seen
🗺
ROUTES / TYPES
5 / 4
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

3
KSAN → KIAD
66
avg 4h 47m · San Diego → Washington Dulles
US-2553 → KIAD
3
avg 4h 47m · Speer → Washington Dulles
KNZY → KIAD
1
avg 4h 51m · North Island Naval Air Station-Halsey Field → Washington Dulles

Aircraft types

Equipment used on this number

4
B39M BOEING Boeing 737 MAX 9
56
B739 BOEING Boeing 737-900
15
B738 BOEING Boeing 737-800
3
B38M BOEING Boeing 737 MAX 8
2

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 UAL2129

30
N27519BOEING Boeing 737 MAX 9
→
10/17/2026
5h 8m
No alerts
Replay Analysis
N77573BOEING Boeing 737 MAX 9
→
10/16/2026
4h 27m
No alerts
Replay Analysis
N17583BOEING Boeing 737 MAX 9
→
10/15/2026
4h 26m
No alerts
Replay Analysis
N37521BOEING Boeing 737 MAX 9
→
10/14/2026
4h 49m
No alerts
Replay Analysis
N47453BOEING Boeing 737 MAX 9
→
10/12/2026
4h 34m
No alerts
Replay Analysis
N37534BOEING Boeing 737 MAX 9
→
10/10/2026
4h 47m
No alerts
Replay Analysis
N27526BOEING Boeing 737 MAX 9
→
10/9/2026
4h 30m
No alerts
Replay Analysis
N77558BOEING Boeing 737 MAX 9
→
10/8/2026
4h 57m
No alerts
Replay Analysis
N47470BOEING Boeing 737 MAX 9
→
10/7/2026
4h 40m
No alerts
Replay Analysis
N27419BOEING Boeing 737 MAX 9
→
10/6/2026
4h 46m
No alerts
Replay Analysis
N37510BOEING Boeing 737 MAX 9
→
10/5/2026
4h 47m
No alerts
Replay Analysis
N17599BOEING Boeing 737 MAX 9
→
10/3/2026
4h 44m
No alerts
Replay Analysis
N37560BOEING Boeing 737 MAX 9
→
10/2/2026
4h 44m
No alerts
Replay Analysis
N17564BOEING Boeing 737 MAX 9
→
10/1/2026
4h 38m
No alerts
Replay Analysis
N47446BOEING Boeing 737 MAX 9
→
9/30/2026
4h 41m
No alerts
Replay Analysis
N77559BOEING Boeing 737 MAX 9
→
9/29/2026
4h 55m
No alerts
Replay Analysis
N37549BOEING Boeing 737 MAX 9
→
9/28/2026
4h 56m
No alerts
Replay Analysis
N17413BOEING Boeing 737 MAX 9
→
9/24/2026
4h 53m
No alerts
Replay Analysis
N77582BOEING Boeing 737 MAX 9
→
9/23/2026
4h 36m
No alerts
Replay Analysis
N17429BOEING Boeing 737 MAX 9
→
9/22/2026
4h 21m
No alerts
Replay Analysis
N37534BOEING Boeing 737 MAX 9
→
9/21/2026
4h 43m
No alerts
Replay Analysis
N47512BOEING Boeing 737 MAX 9
→
9/20/2026
4h 46m
No alerts
Replay Analysis
N47275BOEING Boeing 737 MAX 8
→
9/19/2026
4h 50m
No alerts
Replay Analysis
N17459BOEING Boeing 737 MAX 9
→
9/18/2026
4h 53m
No alerts
Replay Analysis
N37534BOEING Boeing 737 MAX 9
→
9/17/2026
4h 47m
No alerts
Replay Analysis
N77544BOEING Boeing 737 MAX 9
→
9/16/2026
4h 54m
No alerts
Replay Analysis
N77426BOEING Boeing 737 MAX 9
→
9/15/2026
4h 34m
No alerts
Replay Analysis
N77592BOEING Boeing 737 MAX 9
→
9/14/2026
4h 39m
No alerts
Replay Analysis
N27268BOEING Boeing 737 MAX 8
→
9/12/2026
4h 35m
No alerts
Replay Analysis
N77426BOEING Boeing 737 MAX 9
→
9/11/2026
4h 40m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window