UAL1503

UNITED AIRLINES INC · SEA → ORD

UAL1503 is operated by UNITED AIRLINES INC between Seattle Tacoma International Airport (KSEA) and Chicago O'Hare International Airport (KORD). The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 3h 10m. SkyMeter has observed 96 legs of this flight number via ADS-B.

✈
FLIGHTS
96
last 90 days
⏱
AVG DURATION
3h 10m
tracked time
📅
SERVICE PERIOD
5/27/2025 → 8/13/2026
first → last seen
🗺
ROUTES / TYPES
12 / 7
city pairs · airframes
⚠
INCIDENT RATE
0.0%
0 flagged

Routes flown

By count · last 90 days

7
KSEA → KORD
69
avg 3h 44m · Seattle Tacoma → Chicago O'Hare
KONT → KSFO
5
avg 1h 25m · Ontario → San Francisco
KMSP → KORD
1
avg 1h 20m · Minneapolis-St Paul International/Wold-Chamberlain → Chicago O'Hare
KMCI → KORD
1
avg 1h 3m · Kansas City → Chicago O'Hare
KSEA → KMSP
1
avg 3h 46m · Seattle Tacoma → Minneapolis-St Paul International/Wold-Chamberlain
KIAH → KLGA
1
avg 3h 21m · George Bush Intercontinental Houston → La Guardia
KSEA → KMCI
1
avg 4h 22m · Seattle Tacoma → Kansas City

Aircraft types

Equipment used on this number

7
B39M BOEING Boeing 737 MAX 9
73
B739 BOEING Boeing 737-900
9
A21N AIRBUS Airbus A321 Neo
6
A319 AIRBUS Airbus A319
3
A320 AIRBUS Airbus A320
2
B38M BOEING Boeing 737 MAX 8
2
B738 BOEING Boeing 737-800
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 UAL1503

30
N27276BOEING Boeing 737 MAX 8
→
8/13/2026
5m
No alerts
Replay Analysis
N37353BOEING Boeing 737 MAX 8
→
8/12/2026
3h 21m
No alerts
Replay Analysis
N47446BOEING Boeing 737 MAX 9
→
8/11/2026
3h 34m
No alerts
Replay Analysis
N47457BOEING Boeing 737 MAX 9
→
8/10/2026
1h 19m
No alerts
Replay Analysis
N47457BOEING Boeing 737 MAX 9
→
8/10/2026
20m
No alerts
Replay Analysis
N47457BOEING Boeing 737 MAX 9
→
8/10/2026
43m
No alerts
Replay Analysis
N47457BOEING Boeing 737 MAX 9
→
8/10/2026
44m
No alerts
Replay Analysis
N47457BOEING Boeing 737 MAX 9
→
8/10/2026
3h 46m
↘ Diverted
Replay Analysis
N17454BOEING Boeing 737 MAX 9
→
8/9/2026
3h 40m
No alerts
Replay Analysis
N17454BOEING Boeing 737 MAX 9
→
8/8/2026
3h 36m
No alerts
Replay Analysis
N37449BOEING Boeing 737 MAX 9
→
8/7/2026
3h 32m
No alerts
Replay Analysis
N17420BOEING Boeing 737 MAX 9
→
8/6/2026
3h 38m
No alerts
Replay Analysis
N27463BOEING Boeing 737 MAX 9
→
8/5/2026
3h 46m
No alerts
Replay Analysis
N68821BOEING Boeing 737-900
→
8/4/2026
3h 38m
No alerts
Replay Analysis
N17441BOEING Boeing 737 MAX 9
→
8/3/2026
3h 31m
No alerts
Replay Analysis
N37468BOEING Boeing 737-900
→
8/2/2026
1h 25m
No alerts
Replay Analysis
N17441BOEING Boeing 737 MAX 9
→
8/1/2026
4h 15m
No alerts
Replay Analysis
N37507BOEING Boeing 737 MAX 9
→
7/31/2026
3h 42m
No alerts
Replay Analysis
N77584BOEING Boeing 737 MAX 9
→
7/30/2026
3h 35m
No alerts
Replay Analysis
N27586BOEING Boeing 737 MAX 9
→
7/29/2026
3h 43m
No alerts
Replay Analysis
N27464BOEING Boeing 737 MAX 9
→
7/27/2026
3h 39m
No alerts
Replay Analysis
N17433BOEING Boeing 737 MAX 9
→
7/26/2026
3h 34m
No alerts
Replay Analysis
N17566BOEING Boeing 737 MAX 9
→
7/25/2026
3h 27m
No alerts
Replay Analysis
N36469BOEING Boeing 737-900
→
7/24/2026
3h 39m
No alerts
Replay Analysis
N37547BOEING Boeing 737 MAX 9
→
7/23/2026
3h 20m
No alerts
Replay Analysis
N17550BOEING Boeing 737 MAX 9
→
7/22/2026
3h 27m
No alerts
Replay Analysis
N17566BOEING Boeing 737 MAX 9
→
7/21/2026
3h 36m
No alerts
Replay Analysis
N17441BOEING Boeing 737 MAX 9
→
7/20/2026
3h 23m
No alerts
Replay Analysis
N37534BOEING Boeing 737 MAX 9
→
7/19/2026
3h 20m
No alerts
Replay Analysis
N17452BOEING Boeing 737 MAX 9
→
7/18/2026
4h 12m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window