UAL688 is operated by UNITED AIRLINES INC between Washington Dulles International Airport (KIAD) and General Edward Lawrence Logan International Airport (KBOS). The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 2h 24m. SkyMeter has observed 173 legs of this flight number via ADS-B.

✈
FLIGHTS
173
last 90 days
⏱
AVG DURATION
2h 24m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 8/11/2026
first → last seen
🗺
ROUTES / TYPES
12 / 6
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

8
KIAD → KBOS
83
avg 1h 31m · Washington Dulles → General Edward Lawrence Logan
KMCI → KIAD
41
avg 2h 10m · Kansas City → Washington Dulles
KSEA → KIAD
30
avg 4h 48m · Seattle Tacoma → Washington Dulles
KLAS → KIAD
6
avg 4h 32m · McCarran → Washington Dulles
3VA5 → KBOS
1
avg 1h 18m · Goose Hunt Farm → General Edward Lawrence Logan
KMCI → KPIT
1
avg 2h 27m · Kansas City → Pittsburgh
KPIT → KIAD
1
avg 42m · Pittsburgh → Washington Dulles
KSEA → KJYO
1
avg 4h 30m · Seattle Tacoma → Leesburg Executive

Aircraft types

Equipment used on this number

6
B39M BOEING Boeing 737 MAX 9
85
A319 AIRBUS Airbus A319
39
B38M BOEING Boeing 737 MAX 8
30
B739 BOEING Boeing 737-900
24
A320 AIRBUS Airbus A320
9
B738 BOEING Boeing 737-800
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 UAL688

30
N68801BOEING Boeing 737-900
→
8/11/2026
1h 11m
No alerts
Replay Analysis
N37513BOEING Boeing 737 MAX 9
→
8/11/2026
1h 18m
No alerts
Replay Analysis
N892UAAIRBUS Airbus A319
→
8/10/2026
2h 22m
No alerts
Replay Analysis
N434UAAIRBUS Airbus A320
→
8/9/2026
2h 0m
No alerts
Replay Analysis
N37534BOEING Boeing 737 MAX 9
→
8/9/2026
1h 8m
No alerts
Replay Analysis
N807UAAIRBUS Airbus A319
→
8/8/2026
2h 0m
No alerts
Replay Analysis
N47412BOEING Boeing 737 MAX 9
→
8/8/2026
2h 11m
No alerts
Replay Analysis
N852UAAIRBUS Airbus A319
→
8/7/2026
2h 8m
No alerts
Replay Analysis
N838UAAIRBUS Airbus A319
→
8/7/2026
42m
No alerts
Replay Analysis
N838UAAIRBUS Airbus A319
→
8/6/2026
2h 27m
No alerts
Replay Analysis
N37502BOEING Boeing 737 MAX 9
→
8/5/2026
1h 42m
No alerts
Replay Analysis
N843UAAIRBUS Airbus A319
→
8/5/2026
2h 28m
No alerts
Replay Analysis
N17589BOEING Boeing 737 MAX 9
→
8/4/2026
1h 37m
No alerts
Replay Analysis
N807UAAIRBUS Airbus A319
→
8/4/2026
2h 11m
No alerts
Replay Analysis
N27526BOEING Boeing 737 MAX 9
→
8/4/2026
10m
No alerts
Replay Analysis
N27526BOEING Boeing 737 MAX 9
→
8/3/2026
1h 41m
No alerts
Replay Analysis
N27526BOEING Boeing 737 MAX 9
→
8/3/2026
1h 51m
No alerts
Replay Analysis
N852UAAIRBUS Airbus A319
→
8/3/2026
2h 10m
No alerts
Replay Analysis
N17433BOEING Boeing 737 MAX 9
→
8/3/2026
1h 16m
No alerts
Replay Analysis
N806UAAIRBUS Airbus A319
→
8/2/2026
2h 8m
No alerts
Replay Analysis
N802UAAIRBUS Airbus A319
→
8/1/2026
37m
No alerts
Replay Analysis
N17593BOEING Boeing 737 MAX 9
→
7/31/2026
1h 10m
No alerts
Replay Analysis
N847UAAIRBUS Airbus A319
→
7/31/2026
2h 1m
No alerts
Replay Analysis
N17566BOEING Boeing 737 MAX 9
→
7/30/2026
1h 36m
No alerts
Replay Analysis
N807UAAIRBUS Airbus A319
→
7/30/2026
1h 25m
No alerts
Replay Analysis
N17594BOEING Boeing 737-900
→
7/30/2026
57m
No alerts
Replay Analysis
N17594BOEING Boeing 737-900
→
7/29/2026
20m
No alerts
Replay Analysis
N17594BOEING Boeing 737-900
→
7/29/2026
1h 18m
No alerts
Replay Analysis
N826UAAIRBUS Airbus A319
→
7/29/2026
2h 5m
No alerts
Replay Analysis
N77572BOEING Boeing 737 MAX 9
→
7/29/2026
1h 27m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window