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United Airlines

Is UA1239 delayed?

No delay reported yet. UA1239 is scheduled to leave San Jose at 06:45 on Nov 14 and reach Chicago at 12:36 (as of Nov 14, 15:54 UTC).

Usually on time: arrived within 15 min of schedule on 32 of the last 37 flights.

Each route and date is shown separately. Confirm that both airports match your booking.

No live update yet

Showing the published schedule until live times come in.

Update time unavailable

Departure

San Jose

SJC

Scheduled

Nov 14

Arrival

Chicago

ORD

Scheduled

Nov 14

Times shown in airport local time

Service date: · Scheduled departure date (America/Los_Angeles)

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual
Not available

Arrival · UTC

Scheduled
Estimated
Not available
Actual
Not available

No live update yet

Showing the published schedule until live times come in.

Update time unavailable

Departure

Chicago

ORD

Scheduled

Nov 14

Arrival

Rochester

ROC

Scheduled

Nov 14

Times shown in airport local time

Service date: · Scheduled departure date (America/Chicago)

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual
Not available

Arrival · UTC

Scheduled
Estimated
Not available
Actual
Not available

Also sold as AC3537, NZ2498, LX3121

Recent arrivals

Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.

  • San Jose → Chicago

    10 min early

  • Chicago → Rochester

    2 min early

  • San Jose → Chicago

    9 min early

  • Chicago → Rochester

    23 min late

  • San Jose → Chicago

    16 min early

Is UA1239 usually late?

Period: Oct 15, 2026 – Nov 14, 2026

Arrivals tracked
37
On time
86%
of 37 arrivals
Late
14%
of 37 arrivals
Cancelled
2%
of 52 flights
Median arrival delay
5 min early
9 in 10 arrived within
19 min

On time means arriving no more than 15 minutes after the scheduled time; late means more than 15 minutes after. Cancelled and diverted flights are counted apart from arrivals. Compares scheduled and actual arrival times. Cancelled and diverted flights are left out. Some flights may be missing.

How flight status works

At the airports today

Chicago (ORD) departures

Left more than 15 min late
66 of 160
Cancelled today
134

Related flights

All United Airlines flights

Flight history and details
UA1239 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Nov 13, 2026CancelledChicagoRochesterNot availableNot available
Nov 13, 2026ArrivedSan JoseChicago-10
Nov 12, 2026ArrivedChicagoRochester-2
Nov 12, 2026ArrivedSan JoseChicago-9
Nov 11, 2026ArrivedChicagoRochester23
Nov 11, 2026ArrivedSan JoseChicago-16
Nov 10, 2026ArrivedChicagoRochester-13
Nov 10, 2026ArrivedSan JoseChicago-13
Nov 9, 2026ArrivedChicagoRochester2
Nov 9, 2026ArrivedSan JoseChicago-9
Nov 8, 2026ArrivedChicagoRochester-9
Nov 8, 2026ArrivedSan JoseChicago4
Nov 7, 2026ArrivedChicagoRochester23
Nov 7, 2026ArrivedSan JoseChicago7
Nov 6, 2026ArrivedChicagoRochester-8
Nov 6, 2026ArrivedSan JoseChicago2
Nov 5, 2026ArrivedChicagoRochester9
Nov 5, 2026ArrivedSan JoseChicago-12
Nov 4, 2026ArrivedChicagoRochester1
Nov 4, 2026ArrivedSan JoseChicago3
Nov 3, 2026ArrivedChicagoRochester2
Nov 2, 2026ArrivedChicagoRochester17
Nov 1, 2026ArrivedChicagoRochester1
Oct 30, 2026ArrivedChicagoRochester-11
Oct 29, 2026ArrivedChicagoRochester162
Oct 28, 2026ArrivedChicagoRochester5
Oct 27, 2026ArrivedChicagoRochester-18
Oct 26, 2026ArrivedChicagoRochester-12
Oct 25, 2026ArrivedChicagoRochester-5
Oct 24, 2026ArrivedChicagoRochester-3
Oct 23, 2026ArrivedChicagoRochester-10
Oct 22, 2026ArrivedChicagoRochester13
Oct 20, 2026ArrivedChicagoRochester-13
Oct 19, 2026ArrivedChicagoRochester-16
Oct 18, 2026ArrivedChicagoRochester-6
Oct 17, 2026ArrivedChicagoRochester-7
Oct 16, 2026ArrivedChicagoRochester26
Oct 15, 2026ArrivedChicagoRochester-22
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