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
08:42 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
20 ft
Coordinates
42.3620, -71.0079

cloud Weather

Wind
350° / 8 kt
Visibility
10 SM
Ceiling
OVC 600 ft
Temp / Dew
11°C / 9°C
Altimeter
29.77 inHg

Obs: 2026-10-12T11:54:00.000Z

Raw METAR / TAF 
METAR KBOS 121154Z 35008KT 10SM OVC006 11/09 A2977 RMK AO2 SLP082 60004 70154 T01060094 10117 20100 55006

TAF KBOS 121120Z 1212/1318 36009KT 6SM BR OVC006 FM121400 36009KT P6SM OVC015 FM121700 35005KT P6SM SCT040 TEMPO 1217/1219 BKN030 FM130400 04010KT P6SM OVC030 FM131000 07010KT P6SM -RA OVC008

warning FAA Advisories

  • Ground Delay: low ceilings (avg 1 hour and 25 minutes)

flight Live Traffic

flight_takeoff 211 Departures
flight_land 192 Arrivals

Arrival

ORD KORD VFR

Chicago O'Hare International Airport

Chicago, US

Local time
07:42 CDT
Timezone
America/Chicago
Type
Large Airport
Elevation
680 ft
Coordinates
41.9786, -87.9048

cloud Weather

Wind
220° / 8 kt
Visibility
10 SM
Ceiling
FEW 18,000 ft, BKN 24,000 ft
Temp / Dew
18°C / 13°C
Altimeter
29.88 inHg

Obs: 2026-10-12T11:51:00.000Z

Raw METAR / TAF 
METAR KORD 121151Z 22008KT 10SM FEW180 BKN240 18/13 A2988 RMK AO2 SLP116 T01830133 10194 20172 53002 $

TAF KORD 121120Z 1212/1318 20008KT P6SM BKN250 FM121700 21013G24KT P6SM FEW250 FM122300 21012KT P6SM FEW120 FM130300 23011KT P6SM FEW100 WS015/27045KT FM131000 26010KT P6SM FEW200

flight Live Traffic

flight_takeoff 314 Departures
flight_land 593 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.