UAL4211

UNITED AIRLINES INC · BFI → SEA

UAL4211 is operated by UNITED AIRLINES INC between Boeing Field King County International Airport (KBFI) and Seattle Tacoma International Airport (KSEA). The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 2h 45m. SkyMeter has observed 6 legs of this flight number via ADS-B.

✈
FLIGHTS
6
last 90 days
⏱
AVG DURATION
2h 45m
tracked time
📅
SERVICE PERIOD
08/23/2025 → 06/30/2026
first → last seen
🗺
ROUTES / TYPES
4 / 4
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

4
KBFI → KSEA
2
avg 1h 34m · Boeing Field King County → Seattle Tacoma
EGLL → KSFO
1
avg 11h 0m · London Heathrow → San Francisco
KBFI → KRNT
1
avg 33m · Boeing Field King County → Renton
KMLB → KTPA
1
avg 34m · Melbourne → Tampa

Aircraft types

Equipment used on this number

4
B39M BOEING Boeing 737 MAX 9
3
A21N AIRBUS Airbus A321 Neo
1
B763 BOEING Boeing 767-300
1
B772 BOEING Boeing 777-200
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 19 operations of UAL4211

19
N47457BOEING Boeing 737 MAX 9
→
06/30/2026
1h 22m
No alerts
Replay Analysis
N64321AIRBUS Airbus A321 Neo
→
06/13/2026
34m
No alerts
Replay Analysis
N87442BOEING Boeing 737 MAX 9
→
05/15/2026
1h 46m
No alerts
Replay Analysis
N665UABOEING Boeing 767-300
→
05/08/2026
1h 15m
No alerts
Replay Analysis
N794UABOEING Boeing 777-200
→
04/28/2026
10h 59m
No alerts
Replay Analysis
N37450BOEING Boeing 737 MAX 9
→
04/16/2026
32m
No alerts
Replay Analysis
N14735BOEING Boeing 737-700
→
04/02/2026
1h 45m
No alerts
Replay Analysis
N17444BOEING Boeing 737 MAX 9
→
03/29/2026
1h 45m
No alerts
Replay Analysis
N37440BOEING Boeing 737 MAX 9
→
03/23/2026
46m
No alerts
Replay Analysis
N61101BOEING Boeing 787-9 Dreamliner
→
02/27/2026
1h 21m
No alerts
Replay Analysis
N17435BOEING Boeing 737 MAX 9
→
02/18/2026
2h 27m
No alerts
Replay Analysis
N17432BOEING Boeing 737 MAX 9
→
02/12/2026
57m
No alerts
Replay Analysis
N17422BOEING Boeing 737 MAX 9
→
02/03/2026
40m
No alerts
Replay Analysis
N17423BOEING Boeing 737 MAX 9
→
01/23/2026
38m
No alerts
Replay Analysis
N17420BOEING Boeing 737 MAX 9
→
01/10/2026
2h 11m
No alerts
Replay Analysis
N17418BOEING Boeing 737 MAX 9
→
12/19/2025
43m
No alerts
Replay Analysis
N20904BOEING Boeing 787-8 BBJ/Dreamliner
→
11/30/2025
9h 20m
No alerts
Replay Analysis
N17411BOEING Boeing 737 MAX 9
→
08/29/2025
2h 10m
No alerts
Replay Analysis
N22995BOEING Boeing 787-9 Dreamliner
→
08/23/2025
1h 20m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window