Apparatus

Try JFK, AAL1290, BAW, or N225AN.

flight_takeoff Flight

UAL427

Operated by United Airlines

Live map

Live map filtered to UAL427. Shown when the flight is currently airborne.

Route airports View route page →

Departure

BOS KBOS IFR

Boston Logan International Airport

Boston, US

Local time
04:14 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
20 ft
Coordinates
42.3620, -71.0079

cloud Weather

Wind
160° / 6 kt
Visibility
10 SM
Ceiling
BKN 700 ft, OVC 15,000 ft
Temp / Dew
22°C / 21°C
Altimeter
29.96 inHg

Obs: 2026-08-28T07:38:00.000Z

Raw METAR / TAF 
SPECI KBOS 280738Z 16006KT 10SM BKN007 OVC150 22/21 A2996 RMK AO2 T02170211

TAF KBOS 280529Z 2806/2912 18006KT P6SM FEW018 BKN220 FM280800 20004KT P6SM BKN030 TEMPO 2808/2811 BKN010 FM281200 19007KT P6SM SCT025 FM281500 12005KT P6SM BKN050 PROB30 2818/2821 4SM TSRA OVC040CB FM282300 21004KT P6SM BKN100 FM290300 33007KT P6SM SCT090

flight Live Traffic

flight_takeoff 69 Departures
flight_land 86 Arrivals

Arrival

ORD KORD VFR

Chicago O'Hare International Airport

Chicago, US

Local time
03:14 CDT
Timezone
America/Chicago
Type
Large Airport
Elevation
680 ft
Coordinates
41.9786, -87.9048

cloud Weather

Wind
130° / 3 kt
Visibility
10 SM
Ceiling
SCT 8,000 ft
Temp / Dew
21°C / 17°C
Altimeter
30.07 inHg

Obs: 2026-08-28T07:51:00.000Z

Raw METAR / TAF 
METAR KORD 280751Z 13003KT 10SM SCT080 21/17 A3007 RMK AO2 SLP179 T02060167

TAF KORD 280520Z 2806/2912 VRB04KT P6SM FEW050 FM281500 22006KT P6SM SCT050

flight Live Traffic

flight_takeoff 198 Departures
flight_land 164 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-07-26 A12EE7 BOS → ORD Jul 26, 05:55 UTCJul 26, 10:40 UTC4h 46m - -
2026-07-25 A12AA4 BOS → ORD Jul 25, 06:05 UTCJul 25, 10:50 UTC4h 45m - -
2026-07-24 A12B09 BOS → ORD Jul 24, 06:10 UTCJul 24, 10:45 UTC4h 35m - -
2026-07-23 A448F6 BOS → ORD Jul 23, 05:45 UTCJul 23, 10:25 UTC4h 40m - -
2026-07-21 A4495D BOS → ORD Jul 21, 06:15 UTCJul 21, 11:25 UTC5h 10m - -
2026-07-21 A4495D BOS → ORD Jul 21, 05:45 UTCJul 21, 11:22 UTC5h 37m +15m -30m
2026-07-20 A12AC3 - Jul 20, 05:50 UTCJul 20, 10:45 UTC4h 55m - -
2026-07-18 A12A9D - Jul 18, 05:50 UTCJul 18, 10:35 UTC4h 45m - -
2026-07-17 A5D668 - Jul 17, 06:20 UTCJul 17, 11:04 UTC4h 45m - -
2026-07-16 A5D643 SAN → EWR Jul 16, 05:50 UTCJul 16, 10:40 UTC4h 50m - -
2026-07-16 A5D643 SAN → EWR Jul 16, 05:45 UTCJul 16, 10:45 UTC5h 0m +15m -5m
2026-07-15 A4495C SAN → EWR Jul 15, 05:50 UTCJul 15, 10:55 UTC5h 5m - -
2026-07-14 A44918 - Jul 14, 05:50 UTCJul 14, 10:55 UTC5h 5m - -
2026-07-14 A44918 SAN → EWR Jul 14, 05:45 UTCJul 14, 10:51 UTC5h 6m +15m -1m
2026-07-13 A4493A - Jul 13, 06:05 UTCJul 13, 11:10 UTC5h 5m - -
2026-07-12 AA7F25 - Jul 12, 05:55 UTCJul 12, 10:45 UTC4h 50m - -
2026-07-11 A12B0E SAN → EWR Jul 11, 05:50 UTCJul 11, 10:25 UTC4h 35m - -
2026-07-11 A12B0E SAN → EWR Jul 11, 05:45 UTCJul 11, 10:33 UTC4h 48m +15m -13m
2026-07-10 AA7EBC - Jul 10, 06:10 UTCJul 10, 09:00 UTC2h 50m - -
2026-07-10 AA7EBC SAN → EWR Jul 10, 05:45 UTCJul 10, 11:01 UTC5h 16m +15m -33m
2026-07-09 A4493D - Jul 9, 05:45 UTCJul 9, 10:45 UTC5h 0m - -
2026-07-08 A4493F - Jul 8, 05:55 UTCJul 8, 10:45 UTC4h 50m - -
2026-07-07 AA7E9B - Jul 7, 06:10 UTCJul 7, 10:55 UTC4h 45m - -
2026-07-06 AA7E9A - Jul 6, 06:15 UTCJul 6, 10:55 UTC4h 40m - -
2026-07-04 A5954E DEN → XNA Jul 4, 16:00 UTCJul 4, 17:25 UTC1h 25m - -
2026-07-04 A449A2 - Jul 4, 05:55 UTCJul 4, 10:45 UTC4h 50m - -
2026-07-04 A449A2 SAN → EWR Jul 4, 05:45 UTCJul 4, 10:50 UTC5h 5m +15m +5m
2026-07-03 AA7EBC - Jul 3, 05:55 UTCJul 3, 10:30 UTC4h 35m - -
2026-07-03 AA7EBC SAN → EWR Jul 3, 05:45 UTCJul 3, 10:29 UTC4h 44m +15m -23m
2026-07-02 A12B0A - Jul 2, 06:20 UTCJul 2, 10:55 UTC4h 35m - -

Performance history

Flights tracked
137 showing last 30
Avg arrival delay
-14m
On-time arrival
100% 100% on time
Aircraft used
22

Monthly activity 4 months

Month Flights tracked
July 2026 32
June 2026 36
May 2026 34
April 2026 35

UAL427 frequently asked

Where does flight UAL427 fly?
UAL427 (United Airlines) flies from BOS to ORD. View the full route page.
How long is flight UAL427?
Based on observed flights, UAL427 takes on average 4h 42m from takeoff to landing.
How often does UAL427 fly?
UAL427 has been observed flying several times a week in our tracking data. We've recorded 137 flights under this callsign.
Is flight UAL427 usually on time?
Across recent flights, UAL427 arrives 14 minutes early on average. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL427?
UAL427 has been operated by 22 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL427 live?
Yes. When UAL427 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.