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United Airlines

Is UA2278 delayed?

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

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

Arrived

25 min early

Official source · Updated

Departure

San Francisco

SFO

Actual

Scheduled 22:35

Aug 31

Arrival

Chicago

ORD

Actual

Scheduled 05:04

Sep 1

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Actual

Arrival · UTC

Scheduled
Estimated
Actual

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

Arrived

67 min late

Official source · Updated

Departure

San Diego

SAN

Actual

Scheduled 19:41

Aug 31

Arrival

San Francisco

SFO

Actual

Scheduled 21:31

Aug 31

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Actual

Arrival · UTC

Scheduled
Estimated
Actual
Route overview: San Francisco → ChicagoSFOORD
Route overview
Route overview: San Diego → San FranciscoSANSFO
Route overview

Recent arrivals

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

  • SFO → ORD

    7 min early

  • SAN → SFO

    26 min late

  • SFO → ORD

    28 min late

  • SFO → ORD

    9 min early

  • SFO → ORD

    13 min late
Flight history and details

Aug 19, 2026 — Sep 18, 2026

Observed arrivals
42
Arrivals over 15 minutes late
12
Observed cancellations
2
Observed occurrences
49

Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.

How flight status works

UA2278 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 17, 2026ArrivedSan FranciscoChicago
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-7
Sep 17, 2026ArrivedSan DiegoSan Francisco
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26
Sep 16, 2026ArrivedSan FranciscoChicago
28
Sep 15, 2026ArrivedSan FranciscoChicago
-9
Sep 14, 2026ArrivedSan FranciscoChicago
13
Sep 14, 2026ArrivedSan DiegoSan Francisco
55
Sep 13, 2026ArrivedSan FranciscoChicago
-44
Sep 12, 2026ArrivedSan FranciscoChicago
-36
Sep 12, 2026ArrivedSan DiegoSan Francisco
16
Sep 11, 2026ArrivedSan FranciscoChicago
-23
Sep 10, 2026ArrivedSan FranciscoChicago
-29
Sep 9, 2026ArrivedSan FranciscoChicago
-33
Sep 8, 2026ArrivedSan FranciscoChicago
-2
Sep 7, 2026ArrivedSan FranciscoChicago
-24
Sep 7, 2026ArrivedSan DiegoSan Francisco
85
Sep 6, 2026ArrivedSan FranciscoChicago
-25
Sep 5, 2026ArrivedSan FranciscoChicago
-47
Sep 5, 2026ArrivedSan DiegoSan Francisco
-30
Sep 4, 2026ArrivedSan FranciscoChicago
-58
Sep 4, 2026ArrivedSan DiegoSan Francisco
92
Sep 3, 2026ArrivedSan FranciscoChicago
-30
Sep 3, 2026ArrivedSan DiegoSan Francisco
46
Sep 2, 2026ArrivedSan FranciscoChicago
-35
Sep 1, 2026ArrivedSan FranciscoChicago
-36
Sep 1, 2026CancelledSan DiegoNot available
Not available
Aug 31, 2026ArrivedSan FranciscoChicago
-25
Aug 31, 2026ArrivedSan DiegoSan Francisco
67
Aug 30, 2026ArrivedSan FranciscoChicago
-25
Aug 30, 2026ArrivedSan DiegoSan Francisco
17
Aug 29, 2026ArrivedSan FranciscoChicago
-9
Aug 29, 2026ArrivedSan DiegoSan Francisco
-32
Aug 28, 2026ArrivedSan FranciscoChicago
-35
Aug 28, 2026ArrivedSan DiegoSan Francisco
-29
Aug 27, 2026ArrivedSan FranciscoChicago
74
Aug 27, 2026ArrivedSan DiegoSan Francisco
2
Aug 26, 2026ArrivedSan FranciscoChicago
-31
Aug 25, 2026ArrivedSan FranciscoChicago
-35
Aug 25, 2026CancelledSan DiegoNot available
Not available
Aug 24, 2026ArrivedSan FranciscoChicago
-47
Aug 24, 2026ArrivedSan DiegoSan Francisco
9
Aug 23, 2026ArrivedSan FranciscoChicago
-27
Aug 23, 2026ArrivedSan DiegoSan Francisco
26
Aug 22, 2026ArrivedSan DiegoSan Francisco
-28
Aug 20, 2026ArrivedSan DiegoSan Francisco
36

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