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United Airlines

Is UA278 delayed?

No delay reported yet. UA278 is scheduled to leave Chicago at 20:32 on Nov 15 and reach Atlanta at 23:08 (as of Nov 15, 18:46 UTC).

Usually on time: 16 of its last 20 graded arrivals landed within 15 min of schedule. We say “usually” only from 20 graded arrivals, with two in three or more on one side.

No live update yet

Showing the published schedule until live times come in.

Update time unavailable

Departure

Chicago

ORD

Scheduled

Nov 15

Arrival

Atlanta

ATL

Scheduled

Nov 15

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 AC4990, NZ9810

Route overview: Chicago → AtlantaORDATL
Chicago → Atlanta

Recent arrivals

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

  • Chicago → Atlanta

    75 min late

  • Chicago → Atlanta

    31 min late

  • Chicago → Atlanta

    5 min early

  • Chicago → Atlanta

    32 min early

  • Chicago → Atlanta

    4 min early

Is UA278 usually late?

Period: Oct 16, 2026 – Nov 15, 2026

Landings recorded
20
Graded against schedule
20
Not graded
0
On time
80%
of 20 flights
Late
20%
of 20 flights
Cancelled
0%
of 20 flights
Diverted
0%
of 20 flights
Median arrival delay
9 min early
9 in 10 arrived within
19 min

On time means landing no more than 15 minutes after the scheduled arrival, late more than 15 minutes after, both times read to the minute. The percentages share one base: graded arrivals plus cancelled and diverted flights. A cancelled plan another plan of the flight replaced within 12 hours is not counted. Median and “9 in 10” are interpolated over the graded arrivals. Compares scheduled and actual arrival times, read to the minute. Some flights may be missing.

How flight status works

Departures on record at these airports today

Chicago (ORD) departures

Delayed: left more than 15 min after schedule
98 delayed, 38 cancelled of 403 departures on record
Flights from Chicago to Atlanta today

Atlanta (ATL) departures

Delayed: left more than 15 min after schedule
147 delayed, 32 cancelled of 350 departures on record

Counts cover the departures on record at each airport, not its full schedule.

Related flights

All United Airlines flights

Flight history and details
UA278 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Nov 14, 2026ArrivedChicagoAtlanta75
Nov 12, 2026ArrivedChicagoAtlanta31
Nov 11, 2026ArrivedChicagoAtlanta-5
Nov 10, 2026ArrivedChicagoAtlanta-32
Nov 9, 2026ArrivedChicagoAtlanta-4
Nov 8, 2026ArrivedChicagoAtlanta-24
Nov 7, 2026ArrivedChicagoAtlanta-17
Nov 6, 2026ArrivedChicagoAtlanta2
Nov 5, 2026ArrivedChicagoAtlanta15
Nov 4, 2026ArrivedChicagoAtlanta-15
Nov 3, 2026ArrivedChicagoAtlanta-13
Nov 2, 2026ArrivedChicagoAtlanta18
Oct 31, 2026ArrivedChicagoAtlanta17
Oct 30, 2026ArrivedChicagoAtlanta-4
Oct 28, 2026ArrivedChicagoAtlanta-21
Oct 27, 2026ArrivedChicagoAtlanta-30
Oct 26, 2026ArrivedChicagoAtlanta-16
Oct 25, 2026ArrivedChicagoAtlanta-4
Oct 24, 2026ArrivedDullesNorfolk-25
Oct 17, 2026ArrivedDullesNorfolk-21
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