UAL686 is operated by UNITED AIRLINES INC between San Francisco International Airport (KSFO) and George Bush Intercontinental Houston Airport (KIAH). The flight is most often flown by a BOEING Boeing 737-900. Typical block time is 3h 6m. SkyMeter has observed 116 legs of this flight number via ADS-B.

✈
FLIGHTS
116
last 90 days
⏱
AVG DURATION
3h 6m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/21/2026
first → last seen
🗺
ROUTES / TYPES
9 / 9
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

7
KSFO → KIAH
76
avg 3h 43m · San Francisco → George Bush Intercontinental Houston
KIAH → KMSY
25
avg 51m · George Bush Intercontinental Houston → Louis Armstrong New Orleans
KHAF → KIAH
7
avg 3h 47m · Half Moon Bay → George Bush Intercontinental Houston
KOAK → KIAH
2
avg 3h 38m · Metropolitan Oakland → George Bush Intercontinental Houston
KGPT → KMSY
1
avg 21m · Gulfport Biloxi → Louis Armstrong New Orleans
KSFO → KIAD
1
avg 8h 5m · San Francisco → Washington Dulles
KIAH → KGPT
1
avg 1h 23m · George Bush Intercontinental Houston → Gulfport Biloxi

Aircraft types

Equipment used on this number

9
B739 BOEING Boeing 737-900
73
B38M BOEING Boeing 737 MAX 8
20
B39M BOEING Boeing 737 MAX 9
14
A320 AIRBUS Airbus A320
4
A21N AIRBUS Airbus A321 Neo
1
A319 AIRBUS Airbus A319
1
B738 BOEING Boeing 737-800
1
B737 BOEING Boeing 737-700
1
B789 BOEING Boeing 787-9 Dreamliner
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 UAL686

30
N77581BOEING Boeing 737 MAX 9
→
08/21/2026
3h 57m
No alerts
Replay Analysis
N37531BOEING Boeing 737 MAX 9
→
08/20/2026
4h 8m
No alerts
Replay Analysis
N37507BOEING Boeing 737 MAX 9
→
08/18/2026
3h 38m
No alerts
Replay Analysis
N57416BOEING Boeing 737 MAX 9
→
08/17/2026
3h 40m
No alerts
Replay Analysis
N47570BOEING Boeing 737 MAX 9
→
08/16/2026
3h 46m
No alerts
Replay Analysis
N47434BOEING Boeing 737 MAX 9
→
08/15/2026
3h 47m
No alerts
Replay Analysis
N37540BOEING Boeing 737 MAX 9
→
08/14/2026
3h 48m
No alerts
Replay Analysis
N77587BOEING Boeing 737 MAX 9
→
08/13/2026
3h 50m
No alerts
Replay Analysis
N47505BOEING Boeing 737 MAX 9
→
08/12/2026
3h 51m
No alerts
Replay Analysis
N27270BOEING Boeing 737 MAX 8
→
08/11/2026
3h 44m
No alerts
Replay Analysis
N69835BOEING Boeing 737-900
→
08/10/2026
3h 35m
No alerts
Replay Analysis
N69813BOEING Boeing 737-900
→
08/08/2026
3h 34m
No alerts
Replay Analysis
N39463BOEING Boeing 737-900
→
08/07/2026
3h 38m
No alerts
Replay Analysis
N75436BOEING Boeing 737-900
→
08/06/2026
3h 51m
No alerts
Replay Analysis
N69804BOEING Boeing 737-900
→
08/05/2026
3h 45m
No alerts
Replay Analysis
N78448BOEING Boeing 737-900
→
08/04/2026
3h 43m
No alerts
Replay Analysis
N37471BOEING Boeing 737-900
→
08/03/2026
3h 38m
No alerts
Replay Analysis
N78438BOEING Boeing 737-900
→
08/02/2026
3h 49m
No alerts
Replay Analysis
N69839BOEING Boeing 737-900
→
08/01/2026
7h 55m
No alerts
Replay Analysis
N61886BOEING Boeing 737-900
→
07/31/2026
3h 39m
No alerts
Replay Analysis
N68834BOEING Boeing 737-900
→
07/30/2026
3h 45m
No alerts
Replay Analysis
N37456BOEING Boeing 737-900
→
07/29/2026
3h 47m
No alerts
Replay Analysis
N53442BOEING Boeing 737-900
→
07/28/2026
3h 47m
No alerts
Replay Analysis
N66848BOEING Boeing 737-900
→
07/27/2026
3h 49m
No alerts
Replay Analysis
N36444BOEING Boeing 737-900
→
07/26/2026
3h 55m
No alerts
Replay Analysis
N75425BOEING Boeing 737-900
→
07/25/2026
3h 59m
No alerts
Replay Analysis
N67812BOEING Boeing 737-900
→
07/24/2026
3h 46m
No alerts
Replay Analysis
N69816BOEING Boeing 737-900
→
07/23/2026
3h 36m
No alerts
Replay Analysis
N37551BOEING Boeing 737 MAX 9
→
07/22/2026
3h 48m
No alerts
Replay Analysis
N68801BOEING Boeing 737-900
→
07/21/2026
3h 57m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window