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United Airlines

Is UA638 delayed?

No delay reported yet. UA638 is scheduled to leave Chicago at 13:05 on Nov 14 and reach San Francisco at 15:29 (as of Nov 14, 15:55 UTC).

Usually on time: arrived within 15 min of schedule on 34 of the last 37 flights.

No live update yet

Showing the published schedule until live times come in.

Update time unavailable

Departure

Chicago

ORD

Scheduled

Nov 14

Arrival

San Francisco

SFO

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 AC4116, AC5269, NZ9325, NZ9335, VA8088

Route overview: Chicago → San FranciscoORDSFO
Chicago → San Francisco

Recent arrivals

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

  • San Francisco → Honolulu

    19 min early

  • San Francisco → Honolulu

    26 min early

  • Chicago → San Francisco

    34 min early

  • San Francisco → Honolulu

    18 min early

  • Chicago → San Francisco

    26 min late

Is UA638 usually late?

Period: Oct 15, 2026 – Nov 14, 2026

Arrivals tracked
37
On time
92%
of 37 arrivals
Late
8%
of 37 arrivals
Cancelled
2%
of 48 flights
Median arrival delay
11 min early
9 in 10 arrived within
13 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
Flights from Chicago to San Francisco today

San Francisco (SFO) departures

Left more than 15 min late
25 of 46
Cancelled today
41

Related flights

All United Airlines flights

Flight history and details
UA638 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Nov 13, 2026ArrivedSan FranciscoHonolulu-19
Nov 13, 2026CancelledChicagoSan FranciscoNot availableNot available
Nov 12, 2026ArrivedSan FranciscoHonolulu-26
Nov 12, 2026ArrivedChicagoSan Francisco-34
Nov 11, 2026ArrivedSan FranciscoHonolulu-18
Nov 11, 2026ArrivedChicagoSan Francisco26
Nov 10, 2026ArrivedSan FranciscoHonolulu-11
Nov 10, 2026ArrivedChicagoSan Francisco-6
Nov 9, 2026ArrivedSan FranciscoHonolulu14
Nov 9, 2026ArrivedChicagoSan Francisco-34
Nov 8, 2026ArrivedChicagoSan Francisco-28
Nov 7, 2026ArrivedSan FranciscoHonolulu3
Nov 7, 2026ArrivedChicagoSan Francisco-35
Nov 6, 2026ArrivedSan FranciscoHonolulu-17
Nov 6, 2026ArrivedChicagoSan Francisco-43
Nov 5, 2026ArrivedSan FranciscoHonolulu-36
Nov 5, 2026ArrivedChicagoSan Francisco-8
Nov 4, 2026ArrivedSan FranciscoHonolulu-23
Nov 4, 2026ArrivedChicagoSan Francisco5
Nov 3, 2026ArrivedSan FranciscoHonolulu7
Nov 2, 2026ArrivedSan FranciscoHonolulu-12
Nov 1, 2026ArrivedSan FranciscoHonolulu32
Oct 31, 2026ArrivedSan FranciscoHonolulu-20
Oct 30, 2026ArrivedSan FranciscoHonolulu-10
Oct 29, 2026ArrivedSan FranciscoHonolulu-5
Oct 28, 2026ArrivedSan FranciscoHonolulu-4
Oct 27, 2026ArrivedSan FranciscoHonolulu3
Oct 26, 2026ArrivedSan FranciscoHonolulu7
Oct 25, 2026ArrivedSan FranciscoHonolulu5
Oct 24, 2026ArrivedSan FranciscoHonolulu-11
Oct 23, 2026ArrivedSan FranciscoHonolulu-3
Oct 22, 2026ArrivedSan FranciscoHonolulu40
Oct 20, 2026ArrivedSan FranciscoHonolulu-32
Oct 19, 2026ArrivedSan FranciscoHonolulu-24
Oct 18, 2026ArrivedSan FranciscoHonolulu-19
Oct 17, 2026ArrivedSan FranciscoHonolulu-5
Oct 16, 2026ArrivedSan FranciscoHonolulu15
Oct 15, 2026ArrivedSan FranciscoHonolulu-11
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