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United Airlines

Is UA2400 delayed?

No — UA2400 landed in San Francisco 26 min early, at 21:22 on Sep 29 (as of Sep 30, 05:00 UTC).

Usually on time: arrived within 15 min of schedule on 23 of the last 32 flights.

Arrived

26 min early

Official source · Updated

Departure

Boston

BOS

Scheduled

Not available

Arrival

San Francisco

SFO

Actual

Scheduled 21:48

Sep 29

Times shown in airport local time

Service date: · Scheduled arrival date; departure time unavailable (America/Los_Angeles)

Flight details

Departure · UTC

Scheduled
Not available
Estimated
Not available
Actual
Not available

Arrival · UTC

Scheduled
Estimated
Actual
View this flight’s market

Market prices express trading expectations about a contract’s stated threshold. They do not confirm airline status. The linked market shows its terms and activity.

Also sold as OZ9530, NZ9024, NZ9366, AZ4385, VA8238, VA8312, VA8451

Route overview: Boston → San FranciscoBOSSFO
Boston → San Francisco

Recent arrivals

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

  • Boston → San Francisco

    26 min early
  • San Francisco → Las Vegas

    643 min late
  • San Francisco → Las Vegas

    35 min early
  • Boston → San Francisco

    14 min early
  • San Francisco → Las Vegas

    <1 min early

Is UA2400 usually late?

Observation window: Aug 31, 2026 – Sep 30, 2026

Observed arrivals
32
On time
72%
of 32 arrivals
Late
28%
of 32 arrivals
Cancelled
2%
of 42 flights
Median arrival delay
9 min early
9 in 10 arrived within
83 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. 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

At the airports today

Boston (BOS) departures

Left more than 15 min late
1 of 22
Cancelled today
0

San Francisco (SFO) departures

Left more than 15 min late
4 of 15
Cancelled today
0

All United Airlines flights

Flight history and details
UA2400 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 29, 2026ArrivedBostonSan Francisco-26
Sep 27, 2026ArrivedSan FranciscoLas Vegas643
Sep 27, 2026CancelledBostonSan FranciscoNot availableNot available
Sep 26, 2026ArrivedSan FranciscoLas Vegas-35
Sep 26, 2026ArrivedBostonSan Francisco-14
Sep 25, 2026ArrivedSan FranciscoLas Vegas0
Sep 25, 2026ArrivedBostonSan Francisco-16
Sep 24, 2026ArrivedSan FranciscoLas Vegas-9
Sep 24, 2026ArrivedBostonSan Francisco-8
Sep 23, 2026ArrivedSan FranciscoLas Vegas-8
Sep 23, 2026ArrivedPhiladelphiaSan Francisco-38
Sep 22, 2026ArrivedSan FranciscoLas Vegas-15
Sep 21, 2026ArrivedPhiladelphiaSan Francisco86
Sep 20, 2026ArrivedPhiladelphiaSan Francisco52
Sep 17, 2026ArrivedSan FranciscoLas Vegas45
Sep 17, 2026ArrivedPhiladelphiaSan Francisco-9
Sep 16, 2026ArrivedSan FranciscoLas Vegas-22
Sep 16, 2026ArrivedPhiladelphiaSan Francisco15
Sep 15, 2026ArrivedSan FranciscoLas Vegas-17
Sep 14, 2026ArrivedSan FranciscoLas Vegas-21
Sep 14, 2026ArrivedPhiladelphiaSan Francisco-18
Sep 13, 2026ArrivedPhiladelphiaSan Francisco21
Sep 11, 2026ArrivedSan FranciscoLas Vegas-3
Sep 10, 2026ArrivedSan FranciscoLas Vegas-2
Sep 9, 2026ArrivedSan FranciscoLas Vegas-9
Sep 9, 2026ArrivedPhiladelphiaSan Francisco-12
Sep 8, 2026ArrivedSan FranciscoLas Vegas-29
Sep 7, 2026ArrivedSan FranciscoLas Vegas-22
Sep 7, 2026ArrivedBostonSan Francisco-6
Sep 4, 2026ArrivedBostonSan Francisco36
Sep 3, 2026ArrivedBostonSan Francisco175
Sep 2, 2026ArrivedBostonSan Francisco50
Aug 31, 2026ArrivedBostonSan Francisco124

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