UAL663 is operated by UNITED AIRLINES INC between Denver International Airport (KDEN) and Rogue Valley International Medford Airport (KMFR). The flight is most often flown by a BOEING Boeing 737-900. Typical block time is 2h 5m. SkyMeter has observed 34 legs of this flight number via ADS-B.

✈
FLIGHTS
34
last 90 days
⏱
AVG DURATION
2h 5m
tracked time
📅
SERVICE PERIOD
04/17/2026 → 06/03/2026
first → last seen
🗺
ROUTES / TYPES
7 / 5
city pairs · airframes
⚠
INCIDENT RATE
5.9%
2 flagged

Routes flown

By count · last 90 days

3
KDEN → KMFR
18
avg 2h 33m · Denver → Rogue Valley International Medford
KSJC → KDEN
5
avg 2h 26m · Norman Y. Mineta San Jose → Denver
1CD2 → KDEN
1
avg 36m · Tonga → Denver

Aircraft types

Equipment used on this number

5
B739 BOEING Boeing 737-900
18
B39M BOEING Boeing 737 MAX 9
10
B38M BOEING Boeing 737 MAX 8
5
B738 BOEING Boeing 737-800
2
A319 AIRBUS Airbus A319
1

Safety profile

Flagged flights · last 90 days

Go-arounds
0
Unstable approach
2
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 UAL663

30
N37420BOEING Boeing 737-900
→
06/03/2026
43m
No alerts
Replay Analysis
N17438BOEING Boeing 737 MAX 9
→
06/03/2026
2h 38m
No alerts
Replay Analysis
N68805BOEING Boeing 737-900
→
06/02/2026
1h 10m
△ Unstable
Replay Analysis
N68805BOEING Boeing 737-900
→
06/01/2026
1h 21m
No alerts
Replay Analysis
N68805BOEING Boeing 737-900
→
06/01/2026
2h 31m
△ Unstable
Replay Analysis
N37563BOEING Boeing 737 MAX 9
→
06/01/2026
2h 32m
No alerts
Replay Analysis
N69810BOEING Boeing 737-900
→
05/31/2026
2h 22m
No alerts
Replay Analysis
N77571BOEING Boeing 737 MAX 9
→
05/31/2026
2h 31m
No alerts
Replay Analysis
N69838BOEING Boeing 737-900
→
05/29/2026
2h 35m
No alerts
Replay Analysis
N47570BOEING Boeing 737 MAX 9
→
05/29/2026
6m
No alerts
Replay Analysis
N47570BOEING Boeing 737 MAX 9
→
05/29/2026
2h 41m
No alerts
Replay Analysis
N63820BOEING Boeing 737-900
→
05/28/2026
2h 24m
△ Unstable
Replay Analysis
N27519BOEING Boeing 737 MAX 9
→
05/28/2026
2h 48m
No alerts
Replay Analysis
N27503BOEING Boeing 737 MAX 9
→
05/26/2026
2h 28m
No alerts
Replay Analysis
N81449BOEING Boeing 737-900
→
05/26/2026
11m
No alerts
Replay Analysis
N81449BOEING Boeing 737-900
→
05/25/2026
2h 24m
No alerts
Replay Analysis
N17427BOEING Boeing 737 MAX 9
→
05/25/2026
2h 17m
No alerts
Replay Analysis
N38446BOEING Boeing 737-900
→
05/25/2026
36m
No alerts
Replay Analysis
N38446BOEING Boeing 737-900
→
05/24/2026
2h 28m
No alerts
Replay Analysis
N47569BOEING Boeing 737 MAX 9
→
05/24/2026
2h 24m
No alerts
Replay Analysis
N78448BOEING Boeing 737-900
→
05/24/2026
12m
No alerts
Replay Analysis
N78448BOEING Boeing 737-900
→
05/23/2026
2h 23m
No alerts
Replay Analysis
N64809BOEING Boeing 737-900
→
05/23/2026
2h 30m
No alerts
Replay Analysis
N17564BOEING Boeing 737 MAX 9
→
05/23/2026
27m
No alerts
Replay Analysis
N62895BOEING Boeing 737-900
→
05/22/2026
28m
No alerts
Replay Analysis
N63820BOEING Boeing 737-900
→
05/22/2026
2h 32m
No alerts
Replay Analysis
N64809BOEING Boeing 737-900
→
05/21/2026
2h 29m
No alerts
Replay Analysis
N17294BOEING Boeing 737 MAX 8
→
05/20/2026
2h 27m
No alerts
Replay Analysis
N37470BOEING Boeing 737-900
→
05/18/2026
2h 38m
No alerts
Replay Analysis
N17300BOEING Boeing 737 MAX 8
→
04/25/2026
2h 47m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window