UAL557 is operated by UNITED AIRLINES INC between Billings Logan International Airport (KBIL) and Denver International Airport (KDEN). The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 2h 2m. SkyMeter has observed 90 legs of this flight number via ADS-B.

✈
FLIGHTS
90
last 90 days
⏱
AVG DURATION
2h 2m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/25/2026
first → last seen
🗺
ROUTES / TYPES
14 / 4
city pairs · airframes
⚠
INCIDENT RATE
1.1%
1 flagged

Routes flown

By count · last 90 days

9
KBIL → KDEN
31
avg 1h 31m · Billings Logan → Denver
KCHS → KDEN
18
avg 3h 43m · Charleston Air Force Base-International → Denver
1CO8 → KDEN
2
avg 30m · Everitt → Denver
2CO9 → KDEN
1
avg 1h 6m · Lands End Heliport → Denver
CO82 → KDEN
1
avg 12m · Land → Denver
60CO → KDEN
1
avg 14m · Stevens → Denver
KBIL → KFTG
1
avg 1h 41m · Billings Logan → Colorado Air and Space Port
US-2549 → KDEN
1
avg 19m · Bigfoot Turf → Denver
71CO → KDEN
1
avg 18m · Houston Heliport → Denver

Aircraft types

Equipment used on this number

4
B39M BOEING Boeing 737 MAX 9
51
B739 BOEING Boeing 737-900
43
B738 BOEING Boeing 737-800
26
A320 AIRBUS Airbus A320
2

Safety profile

Flagged flights · last 90 days

Go-arounds
0
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 UAL557

30
N18220BOEING Boeing 737-800
→
08/25/2026
41m
No alerts
Replay Analysis
N36272BOEING Boeing 737-800
→
08/25/2026
1h 18m
No alerts
Replay Analysis
N37255BOEING Boeing 737-800
→
08/23/2026
3h 10m
No alerts
Replay Analysis
N477UAAIRBUS Airbus A320
→
08/22/2026
1h 3m
No alerts
Replay Analysis
N73291BOEING Boeing 737-800
→
08/22/2026
1h 49m
No alerts
Replay Analysis
N33289BOEING Boeing 737-800
→
08/21/2026
24m
No alerts
Replay Analysis
N77518BOEING Boeing 737-800
→
08/18/2026
3h 11m
No alerts
Replay Analysis
N76508BOEING Boeing 737-800
→
08/17/2026
3h 9m
No alerts
Replay Analysis
N35204BOEING Boeing 737-800
→
08/17/2026
2h 39m
No alerts
Replay Analysis
N35204BOEING Boeing 737-800
→
08/16/2026
1h 28m
No alerts
Replay Analysis
N35204BOEING Boeing 737-800
→
08/16/2026
4h 7m
No alerts
Replay Analysis
N477UAAIRBUS Airbus A320
→
08/15/2026
1h 7m
No alerts
Replay Analysis
N77296BOEING Boeing 737-800
→
08/15/2026
3h 23m
No alerts
Replay Analysis
N77296BOEING Boeing 737-800
→
08/14/2026
46m
No alerts
Replay Analysis
N77296BOEING Boeing 737-800
→
08/14/2026
4h 10m
No alerts
Replay Analysis
N35236BOEING Boeing 737-800
→
08/14/2026
1h 5m
No alerts
Replay Analysis
N35236BOEING Boeing 737-800
→
08/14/2026
24m
No alerts
Replay Analysis
N35236BOEING Boeing 737-800
→
08/13/2026
3h 17m
No alerts
Replay Analysis
N35236BOEING Boeing 737-800
→
08/13/2026
3h 42m
No alerts
Replay Analysis
N78524BOEING Boeing 737-800
→
08/12/2026
15m
No alerts
Replay Analysis
N78524BOEING Boeing 737-800
→
08/11/2026
3h 3m
No alerts
Replay Analysis
N37466BOEING Boeing 737-900
→
08/10/2026
1h 40m
△ Low approach-stability score
Replay Analysis
N39475BOEING Boeing 737-900
→
08/08/2026
1h 39m
No alerts
Replay Analysis
N66825BOEING Boeing 737-900
→
08/07/2026
1h 37m
No alerts
Replay Analysis
N67845BOEING Boeing 737-900
→
08/06/2026
1h 39m
No alerts
Replay Analysis
N38446BOEING Boeing 737-900
→
08/05/2026
1h 41m
No alerts
Replay Analysis
N68823BOEING Boeing 737-900
→
08/04/2026
1h 21m
No alerts
Replay Analysis
N68823BOEING Boeing 737-900
→
08/04/2026
8m
No alerts
Replay Analysis
N77537BOEING Boeing 737-800
→
08/02/2026
1h 29m
No alerts
Replay Analysis
N37434BOEING Boeing 737-900
→
07/31/2026
1h 31m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window