Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL1503

Operated by United Airlines

Live map

Live map filtered to UAL1503. Shown when the flight is currently airborne.

Route airports View route page →

Departure

ORD KORD VFR

Chicago O'Hare International Airport

Chicago, US

Local time
13:42 CDT
Timezone
America/Chicago
Type
Large Airport
Elevation
680 ft
Coordinates
41.9786, -87.9048

cloud Weather

Wind
220° / 5 kt
Visibility
10 SM
Ceiling
SCT 5,000 ft
Temp / Dew
27°C / 14°C
Altimeter
30.13 inHg

Obs: 2026-08-28T17:51:00.000Z

Raw METAR / TAF 
METAR KORD 281751Z 22005KT 10SM SCT050 27/14 A3013 RMK AO2 SLP199 T02720139 10272 20194 58007

TAF KORD 281720Z 2818/2924 19005KT P6SM SCT050 FM291500 20011G17KT P6SM FEW050 BKN150

Arrival

BOS KBOS VFR

Boston Logan International Airport

Boston, US

Local time
14:42 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
20 ft
Coordinates
42.3620, -71.0079

cloud Weather

Wind
130° / 4 kt
Visibility
10 SM
Ceiling
FEW 3,700 ft, BKN 7,500 ft
Temp / Dew
27°C / 21°C
Altimeter
29.97 inHg

Obs: 2026-08-28T18:15:00.000Z

Raw METAR / TAF 
SPECI KBOS 281815Z 13004KT 10SM FEW037 BKN075 27/21 A2997 RMK AO2 T02670206

TAF KBOS 281733Z 2818/2924 23008KT P6SM SCT035 FM281830 10005KT P6SM SCT035 PROB30 2819/2823 4SM TSRA OVC035CB FM282300 21004KT P6SM BKN100 FM290200 30005KT P6SM SCT250 FM290600 33008KT P6SM SCT200 FM291600 08004KT P6SM SKC

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 A12AE6 ORD → BOS Jul 26, 00:20 UTCJul 26, 03:35 UTC3h 15m - -
2026-07-26 A12AE6 ORD → BOS Jul 26, 00:33 UTCJul 26, 03:23 UTC2h 50m +18m -2m
2026-07-25 A12F09 ORD → BOS Jul 25, 00:45 UTCJul 25, 04:00 UTC3h 15m - -
2026-07-24 A41E74 ORD → BOS Jul 24, 01:10 UTCJul 24, 04:25 UTC3h 15m - -
2026-07-23 A44962 ORD → BOS Jul 23, 00:35 UTCJul 23, 03:45 UTC3h 10m - -
2026-07-22 A12EE0 ORD → BOS Jul 22, 00:30 UTCJul 22, 03:40 UTC3h 10m - -
2026-07-21 A12F09 ORD → BOS Jul 21, 01:00 UTCJul 21, 04:10 UTC3h 10m - -
2026-07-20 A12B07 ORD → BOS Jul 20, 00:40 UTCJul 20, 03:45 UTC3h 5m - -
2026-07-19 A4493C ORD → BOS Jul 19, 04:50 UTCJul 19, 08:00 UTC3h 10m - -
2026-07-18 A12B2B ORD → BOS Jul 18, 00:35 UTCJul 18, 04:00 UTC3h 26m - -
2026-07-17 AD953C ORD → BOS Jul 17, 01:15 UTCJul 17, 02:20 UTC1h 5m - -
2026-07-17 AD953C ORD → BOS Jul 17, 00:33 UTCJul 17, 04:43 UTC4h 10m +18m -12m
2026-07-16 A12AC9 SEA → ORD Jul 16, 00:40 UTCJul 16, 03:55 UTC3h 15m - -
2026-07-15 A44939 SEA → ORD Jul 15, 00:35 UTCJul 15, 04:15 UTC3h 40m - -
2026-07-15 A44939 SEA → ORD Jul 15, 00:33 UTCJul 15, 04:02 UTC3h 29m +18m +3m
2026-07-14 AA7F2A SEA → ORD Jul 14, 01:10 UTCJul 14, 04:30 UTC3h 20m - -
2026-07-13 A449CB SEA → ORD Jul 13, 00:25 UTCJul 13, 03:40 UTC3h 15m - -
2026-07-12 A445C7 - Jul 12, 00:20 UTCJul 12, 03:35 UTC3h 15m - -
2026-07-11 A4945F - Jul 11, 00:25 UTCJul 11, 03:45 UTC3h 20m - -
2026-07-11 A4945F SEA → ORD Jul 11, 00:33 UTCJul 11, 03:41 UTC3h 8m +18m +1m
2026-07-10 AA7F46 SEA → ORD Jul 10, 00:30 UTCJul 10, 03:45 UTC3h 15m - -
2026-07-09 A12F08 ORD → BOS Jul 9, 01:05 UTCJul 9, 04:40 UTC3h 35m - -
2026-07-09 A12F08 ORD → BOS Jul 9, 00:33 UTCJul 9, 04:35 UTC4h 2m +18m -10m
2026-07-08 A448D6 ORD → BOS Jul 8, 00:35 UTCJul 8, 03:55 UTC3h 20m - -
2026-07-07 A449A8 ORD → BOS Jul 7, 00:50 UTCJul 7, 04:15 UTC3h 25m - -
2026-07-06 A12B09 ORD → BOS Jul 6, 00:25 UTCJul 6, 03:45 UTC3h 20m - -
2026-07-06 A12B09 ORD → BOS Jul 6, 00:33 UTCJul 6, 03:30 UTC2h 57m +18m -4m
2026-07-04 AB1B3E ORD → BOS Jul 4, 06:35 UTCJul 4, 06:45 UTC10m - -
2026-07-04 AB1B3E ORD → BOS Jul 4, 03:05 UTCJul 4, 06:45 UTC3h 40m - -
2026-07-04 AB1B3E ORD → BOS Jul 4, 02:58 UTCJul 4, 06:18 UTC3h 20m +163m +142m

Performance history

Flights tracked
121 showing last 30
Avg arrival delay
+17m
On-time arrival
86% 86% on time
Aircraft used
21

Monthly activity 4 months

Month Flights tracked
July 2026 34
June 2026 35
May 2026 32
April 2026 20

UAL1503 frequently asked

Where does flight UAL1503 fly?
UAL1503 (United Airlines) flies from ORD to BOS. View the full route page.
How long is flight UAL1503?
Based on observed flights, UAL1503 takes on average 3h 10m from takeoff to landing.
How often does UAL1503 fly?
UAL1503 has been observed flying several times a week in our tracking data. We've recorded 121 flights under this callsign.
Is flight UAL1503 usually on time?
Across recent flights, UAL1503 arrives with an average 17-minute delay. 86% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL1503?
UAL1503 has been operated by 21 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL1503 live?
Yes. When UAL1503 is currently airborne, the live tracker map above shows its real-time position from ADS-B broadcasts. If the map is empty, the flight is not currently in the air.