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United Airlines

Is UA2309 delayed?

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

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

Arrived

35 min early

Official source · Updated

Departure

San Diego

SAN

Actual

Scheduled 11:17

Aug 29

Arrival

San Francisco

SFO

Actual

Scheduled 13:03

Aug 29

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Actual

Arrival · UTC

Scheduled
Estimated
Actual

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

Arrived

15 min early

Updated

Departure

Denver

DEN

Actual

Scheduled 07:43

Aug 29

Arrival

San Diego

SAN

Actual

Scheduled 09:05

Aug 29

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Actual

Arrival · UTC

Scheduled
Estimated
Actual
Route overview: San Diego → San FranciscoSANSFO
Route overview
Route overview: Denver → San DiegoDENSAN
Route overview

Recent arrivals

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

  • SAN → SFO

    52 min late

  • DEN → SAN

    11 min early

  • SAN → SFO

    31 min late

  • DEN → SAN

    10 min early

  • SAN → SFO

    9 min early
Flight history and details

Aug 19, 2026 — Sep 18, 2026

Observed arrivals
50
Arrivals over 15 minutes late
9
Observed cancellations
0
Observed occurrences
59

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

UA2309 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 18, 2026ArrivedSan DiegoSan Francisco
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52
Sep 18, 2026ArrivedDenverSan Diego
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-11
Sep 17, 2026ArrivedSan DiegoSan Francisco
31
Sep 17, 2026ArrivedDenverSan Diego
-10
Sep 16, 2026ArrivedSan DiegoSan Francisco
-9
Sep 16, 2026ArrivedDenverSan Diego
-4
Sep 15, 2026ArrivedSan DiegoSan Francisco
-8
Sep 15, 2026ArrivedDenverSan Diego
-9
Sep 14, 2026ArrivedSan DiegoSan Francisco
-9
Sep 14, 2026ArrivedDenverSan Diego
12
Sep 13, 2026ArrivedSan DiegoSan Francisco
-12
Sep 13, 2026ArrivedDenverSan Diego
-6
Sep 12, 2026ArrivedSan DiegoSan Francisco
-21
Sep 12, 2026ArrivedDenverSan Diego
-3
Sep 11, 2026ArrivedSan DiegoSan Francisco
4
Sep 11, 2026ArrivedDenverSan Diego
-6
Sep 10, 2026ArrivedSan DiegoSan Francisco
-8
Sep 10, 2026ArrivedDenverSan Diego
-11
Sep 9, 2026ArrivedSan DiegoSan Francisco
-28
Sep 9, 2026ArrivedDenverSan Diego
47
Sep 8, 2026ArrivedSan DiegoSan Francisco
-14
Sep 8, 2026ArrivedDenverSan Diego
-4
Sep 7, 2026ArrivedSan DiegoSan Francisco
-20
Sep 7, 2026ArrivedDenverSan Diego
-4
Sep 6, 2026ArrivedSan DiegoSan Francisco
-22
Sep 6, 2026ArrivedDenverSan Diego
-12
Sep 5, 2026ArrivedSan DiegoSan Francisco
-31
Sep 5, 2026ArrivedDenverSan Diego
-6
Sep 4, 2026ArrivedSan DiegoSan Francisco
-12
Sep 4, 2026ArrivedDenverSan Diego
4
Sep 3, 2026ArrivedSan DiegoSan Francisco
-19
Sep 2, 2026ArrivedSan DiegoSan Francisco
35
Sep 2, 2026ArrivedDenverSan Diego
-17
Sep 1, 2026ArrivedSan DiegoSan Francisco
3
Sep 1, 2026ArrivedDenverSan Diego
-8
Aug 31, 2026ArrivedSan DiegoSan Francisco
58
Aug 31, 2026ArrivedDenverSan Diego
-7
Aug 30, 2026ArrivedSan DiegoSan Francisco
-10
Aug 30, 2026ArrivedDenverSan Diego
-9
Aug 29, 2026ArrivedSan DiegoSan Francisco
-35
Aug 29, 2026ArrivedDenverSan Diego
-15
Aug 28, 2026ArrivedSan DiegoSan Francisco
48
Aug 28, 2026ArrivedDenverSan Diego
-10
Aug 27, 2026ArrivedSan DiegoSan Francisco
2
Aug 27, 2026ArrivedDenverSan Diego
-9
Aug 26, 2026ArrivedSan DiegoSan Francisco
93
Aug 26, 2026ArrivedDenverSan Diego
2
Aug 25, 2026ArrivedSan DiegoSan Francisco
17
Aug 25, 2026ArrivedDenverSan Diego
153
Aug 24, 2026ArrivedSan DiegoSan Francisco
-7

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