UAL8139

UNITED AIRLINES INC · DEN → DFW

UAL8139 is operated by UNITED AIRLINES INC between Denver International Airport (KDEN) and Dallas Fort Worth International Airport (KDFW). The flight is most often flown by a BOEING Boeing 737 MAX 8. Typical block time is 1h 45m. SkyMeter has observed 22 legs of this flight number via ADS-B.

✈
FLIGHTS
22
last 90 days
⏱
AVG DURATION
1h 45m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 08/27/2026
first → last seen
🗺
ROUTES / TYPES
12 / 7
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

10
KDEN → KDFW
5
avg 1h 52m · Denver → Dallas Fort Worth
KSFO → KLAS
4
avg 1h 37m · San Francisco → McCarran
KORD → KROC
3
avg 1h 20m · Chicago O'Hare → Greater Rochester
KDFW → KEWR
1
avg 3h 23m · Dallas Fort Worth → Newark Liberty
KSFO → KLAX
1
avg 1h 17m · San Francisco → Los Angeles
KDEN → KSEA
1
avg 3h 16m · Denver → Seattle Tacoma
KDEN → KRIC
1
avg 3h 5m · Denver → Richmond
KORD → KATL
1
avg 1h 56m · Chicago O'Hare → Hartsfield Jackson Atlanta
KDEN → KSFO
1
avg 2h 45m · Denver → San Francisco
KDEN → KAUS
1
avg 1h 57m · Denver → Austin Bergstrom

Aircraft types

Equipment used on this number

7
B38M BOEING Boeing 737 MAX 8
7
B739 BOEING Boeing 737-900
6
B39M BOEING Boeing 737 MAX 9
3
B738 BOEING Boeing 737-800
2
B737 BOEING Boeing 737-700
2
A21N AIRBUS Airbus A321 Neo
1
A319 AIRBUS Airbus A319
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 UAL8139

30
N14529AIRBUS Airbus A321 Neo
→
08/27/2026
2h 44m
No alerts
Replay Analysis
N37474BOEING Boeing 737-900
→
08/25/2026
2h 0m
No alerts
Replay Analysis
N26232BOEING Boeing 737-800
→
08/16/2026
3h 5m
No alerts
Replay Analysis
N81449BOEING Boeing 737-900
→
08/15/2026
1h 49m
No alerts
Replay Analysis
N17432BOEING Boeing 737 MAX 9
→
08/14/2026
3h 15m
No alerts
Replay Analysis
N17454BOEING Boeing 737 MAX 9
→
08/12/2026
1h 56m
No alerts
Replay Analysis
N69806BOEING Boeing 737-900
→
08/08/2026
1h 39m
No alerts
Replay Analysis
N64844BOEING Boeing 737-900
→
08/07/2026
1h 51m
No alerts
Replay Analysis
N17461BOEING Boeing 737 MAX 9
→
08/04/2026
1h 57m
No alerts
Replay Analysis
N67845BOEING Boeing 737-900
→
07/28/2026
2h 1m
No alerts
Replay Analysis
N28478BOEING Boeing 737-900
→
07/22/2026
1h 17m
No alerts
Replay Analysis
N15751BOEING Boeing 737-700
→
07/19/2026
1h 15m
No alerts
Replay Analysis
N24702BOEING Boeing 737-700
→
07/16/2026
1h 31m
No alerts
Replay Analysis
N807UAAIRBUS Airbus A319
→
07/13/2026
3h 22m
No alerts
Replay Analysis
N47369BOEING Boeing 737 MAX 8
→
06/22/2026
7m
No alerts
Replay Analysis
N47369BOEING Boeing 737 MAX 8
→
06/22/2026
1h 34m
No alerts
Replay Analysis
N37353BOEING Boeing 737 MAX 8
→
06/19/2026
57m
No alerts
Replay Analysis
N34222BOEING Boeing 737-800
→
06/17/2026
1h 13m
No alerts
Replay Analysis
N17337BOEING Boeing 737 MAX 8
→
06/16/2026
6m
No alerts
Replay Analysis
N17337BOEING Boeing 737 MAX 8
→
06/16/2026
1h 30m
No alerts
Replay Analysis
N47282BOEING Boeing 737 MAX 8
→
06/12/2026
1h 44m
No alerts
Replay Analysis
N37278BOEING Boeing 737 MAX 8
→
06/09/2026
1h 39m
No alerts
Replay Analysis
N37372BOEING Boeing 737 MAX 8
→
05/28/2026
1h 29m
No alerts
Replay Analysis
N839UAAIRBUS Airbus A319
→
05/26/2026
2h 49m
No alerts
Replay Analysis
N37372BOEING Boeing 737 MAX 8
→
05/22/2026
1h 24m
No alerts
Replay Analysis
N69818BOEING Boeing 737-900
→
05/20/2026
2h 31m
No alerts
Replay Analysis
N57868BOEING Boeing 757-300
→
05/19/2026
4h 10m
No alerts
Replay Analysis
N496UAAIRBUS Airbus A320
→
05/17/2026
55m
No alerts
Replay Analysis
N14544AIRBUS Airbus A321 Neo
→
04/21/2026
2h 3m
No alerts
Replay Analysis
N37514BOEING Boeing 737 MAX 9
→
04/18/2026
5h 32m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window