Flight Status & Tracker

UAL4209

UNITED AIRLINES INC · BFI → SEA · Last tracked Oct 3, 2026

UAL4209 is a flight number operated by UNITED AIRLINES INC between Boeing Field King County International Airport (KBFI) and Seattle Tacoma International Airport (KSEA). SkyMeter last tracked UAL4209 on October 3, 2026. The flight is most often flown by a AIRBUS Airbus A319. Typical block time is 1h 56m. SkyMeter has observed 9 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
9
last 90 days
⏱
AVG DURATION
1h 56m
tracked time
📅
SERVICE PERIOD
7/15/2025 → 10/3/2026
first → last seen
🗺
ROUTES / TYPES
6 / 4
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

6
KBFI → KSEA
4
avg 1h 30m · Boeing Field King County → Seattle Tacoma
KMEM → KMCO
1
avg 2h 3m · Memphis → Orlando
KDEN → KVCV
1
avg 1h 57m · Denver → Southern California Logistics
KPAE → KIAD
1
avg 4h 24m · Snohomish County (Paine Field) → Washington Dulles
KMCI → KORD
1
avg 1h 27m · Kansas City → Chicago O'Hare
KIDA → KDEN
1
avg 1h 35m · Idaho Falls → Denver

Aircraft types

Equipment used on this number

4
A319 AIRBUS Airbus A319
2
B39M BOEING Boeing 737 MAX 9
2
A320 AIRBUS Airbus A320
1
B737 BOEING Boeing 737-700
1

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 UAL4209

30
N39726BOEING Boeing 737-700
→
10/3/2026
1h 27m
No alerts
Replay Analysis
N17482
→
9/30/2026
1h 6m
No alerts
Replay Analysis
N497UAAIRBUS Airbus A320
→
9/26/2026
2h 3m
No alerts
Replay Analysis
N57480
→
9/20/2026
1h 0m
No alerts
Replay Analysis
N61111
→
9/2/2026
18m
No alerts
Replay Analysis
N61111
→
9/1/2026
4h 5m
No alerts
Replay Analysis
N61111
→
9/1/2026
4h 23m
No alerts
Replay Analysis
N803UAAIRBUS Airbus A319
→
8/15/2026
1h 56m
No alerts
Replay Analysis
N47470BOEING Boeing 737 MAX 9
→
8/13/2026
1h 58m
No alerts
Replay Analysis
N804UAAIRBUS Airbus A319
→
7/18/2026
1h 35m
No alerts
Replay Analysis
N47462BOEING Boeing 737 MAX 9
→
7/15/2026
1h 57m
No alerts
Replay Analysis
N17459BOEING Boeing 737 MAX 9
→
6/27/2026
1h 30m
No alerts
Replay Analysis
N24702BOEING Boeing 737-700
→
5/2/2026
59m
No alerts
Replay Analysis
N12216BOEING Boeing 737-800
→
4/25/2026
4h 56m
No alerts
Replay Analysis
N17452BOEING Boeing 737 MAX 9
→
4/23/2026
54m
No alerts
Replay Analysis
N68805BOEING Boeing 737-900
→
4/7/2026
2h 25m
No alerts
Replay Analysis
N17438BOEING Boeing 737 MAX 9
→
2/28/2026
2h 1m
No alerts
Replay Analysis
N73251BOEING Boeing 737-800
→
2/13/2026
1h 14m
No alerts
Replay Analysis
N73251BOEING Boeing 737-800
→
2/13/2026
1h 14m
No alerts
Replay Analysis
N17428BOEING Boeing 737 MAX 9
→
1/31/2026
2h 26m
No alerts
Replay Analysis
N17428BOEING Boeing 737 MAX 9
→
1/31/2026
2h 26m
No alerts
Replay Analysis
N16234BOEING Boeing 737-800
→
1/26/2026
45m
No alerts
Replay Analysis
N17431BOEING Boeing 737 MAX 9
→
12/23/2025
56m
No alerts
Replay Analysis
N37415BOEING Boeing 737 MAX 9
→
11/25/2025
1h 21m
No alerts
Replay Analysis
N37415BOEING Boeing 737 MAX 9
→
11/25/2025
1h 21m
No alerts
Replay Analysis
N14231BOEING Boeing 737-800
→
10/28/2025
58m
No alerts
Replay Analysis
N14231BOEING Boeing 737-800
→
10/28/2025
41m
No alerts
Replay Analysis
N17414BOEING Boeing 737 MAX 9
→
10/1/2025
1h 23m
No alerts
Replay Analysis
N17414BOEING Boeing 737 MAX 9
→
10/1/2025
1h 2m
No alerts
Replay Analysis
N68805BOEING Boeing 737-900
→
9/20/2025
1h 49m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window