UAL8166

UNITED AIRLINES INC · ORD → IAD

UAL8166 is operated by UNITED AIRLINES INC between Chicago O'Hare International Airport (KORD) and Washington Dulles International Airport (KIAD). The flight is most often flown by a BOEING Boeing 737 MAX 8. Typical block time is 2h 4m. SkyMeter has observed 25 legs of this flight number via ADS-B.

✈
FLIGHTS
25
last 90 days
⏱
AVG DURATION
2h 4m
tracked time
📅
SERVICE PERIOD
5/29/2025 → 8/14/2026
first → last seen
🗺
ROUTES / TYPES
17 / 9
city pairs · airframes
⚠
INCIDENT RATE
8.0%
2 flagged

Routes flown

By count · last 90 days

10
KORD → KIAD
4
avg 1h 45m · Chicago O'Hare → Washington Dulles
KIAH → KDEN
3
avg 2h 10m · George Bush Intercontinental Houston → Denver
KIAH → KMIA
2
avg 2h 0m · George Bush Intercontinental Houston → Miami
KIAH → KIAD
2
avg 2h 34m · George Bush Intercontinental Houston → Washington Dulles
KOAK → KSBA
2
avg 1h 3m · Metropolitan Oakland → Santa Barbara
KMCO → KORD
1
avg 2h 56m · Orlando → Chicago O'Hare
KORD → KDCA
1
avg 1h 24m · Chicago O'Hare → Ronald Reagan Washington National
KIAD → KPIT
1
avg 40m · Washington Dulles → Pittsburgh
KPHL → KIAH
1
avg 2h 57m · Philadelphia → George Bush Intercontinental Houston
KIAH → KLAX
1
avg 2h 53m · George Bush Intercontinental Houston → Los Angeles

Aircraft types

Equipment used on this number

9
B38M BOEING Boeing 737 MAX 8
6
B739 BOEING Boeing 737-900
6
A21N AIRBUS Airbus A321 Neo
4
B39M BOEING Boeing 737 MAX 9
4
B77W BOEING Boeing 777-300ER
3
A320 AIRBUS Airbus A320
2
B738 BOEING Boeing 737-800
2
A319 AIRBUS Airbus A319
1
B737 BOEING Boeing 737-700
1

Safety profile

Flagged flights · last 90 days

Go-arounds
1
Unstable approach
1
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 UAL8166

30
N14230BOEING Boeing 737-800
→
8/14/2026
1h 24m
No alerts
Replay Analysis
N57286BOEING Boeing 737 MAX 8
→
8/10/2026
1h 42m
No alerts
Replay Analysis
N14536AIRBUS Airbus A321 Neo
→
8/8/2026
2h 17m
↻ Go-around
Replay Analysis
N94556AIRBUS Airbus A321 Neo
→
8/7/2026
2h 9m
No alerts
Replay Analysis
N14503AIRBUS Airbus A321 Neo
→
7/28/2026
2h 55m
No alerts
Replay Analysis
N17300BOEING Boeing 737 MAX 8
→
7/28/2026
1h 44m
No alerts
Replay Analysis
N37551BOEING Boeing 737 MAX 9
→
7/27/2026
2h 39m
No alerts
Replay Analysis
N37308BOEING Boeing 737 MAX 8
→
7/21/2026
1h 42m
No alerts
Replay Analysis
N69885BOEING Boeing 737-900
→
7/19/2026
30m
No alerts
Replay Analysis
N69885BOEING Boeing 737-900
→
7/18/2026
1h 33m
No alerts
Replay Analysis
N69885BOEING Boeing 737-900
→
7/18/2026
2h 4m
No alerts
Replay Analysis
N27255BOEING Boeing 737 MAX 8
→
7/15/2026
1h 51m
No alerts
Replay Analysis
N87442BOEING Boeing 737 MAX 9
→
7/13/2026
2h 53m
No alerts
Replay Analysis
N24526AIRBUS Airbus A321 Neo
→
7/7/2026
2h 5m
No alerts
Replay Analysis
N17265BOEING Boeing 737 MAX 8
→
7/5/2026
39m
No alerts
Replay Analysis
N68823BOEING Boeing 737-900
→
7/2/2026
2h 57m
No alerts
Replay Analysis
N481UAAIRBUS Airbus A320
→
6/27/2026
1h 4m
△ Low approach-stability score
Replay Analysis
N76502BOEING Boeing 737-800
→
6/20/2026
2h 27m
No alerts
Replay Analysis
N820UAAIRBUS Airbus A319
→
6/14/2026
1h 45m
No alerts
Replay Analysis
N2341UBOEING Boeing 777-300ER
→
6/13/2026
5h 12m
No alerts
Replay Analysis
N2341UBOEING Boeing 777-300ER
→
6/12/2026
7h 11m
No alerts
Replay Analysis
N2341UBOEING Boeing 777-300ER
→
6/12/2026
1h 58m
No alerts
Replay Analysis
N27260BOEING Boeing 737 MAX 8
→
6/11/2026
1h 28m
No alerts
Replay Analysis
N27568BOEING Boeing 737 MAX 9
→
6/9/2026
1h 46m
No alerts
Replay Analysis
N66825BOEING Boeing 737-900
→
6/7/2026
1h 57m
No alerts
Replay Analysis
N448UAAIRBUS Airbus A320
→
6/5/2026
1h 2m
No alerts
Replay Analysis
N47512BOEING Boeing 737 MAX 9
→
5/31/2026
59m
No alerts
Replay Analysis
N37466BOEING Boeing 737-900
→
5/23/2026
2h 3m
No alerts
Replay Analysis
N13720BOEING Boeing 737-700
→
5/21/2026
58m
No alerts
Replay Analysis
N76526BOEING Boeing 737-800
→
5/15/2026
2h 22m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window