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Delta Air Lines

Is DL3959 delayed?

Yes — DL3959 landed in Boise 18 min late, at 15:24 on Sep 29 (as of Sep 29, 21:32 UTC).

Usually on time: arrived within 15 min of schedule on 20 of the last 27 flights.

Arrived

18 min late

Official source · Updated

Departure

Seattle

SEA

Actual

Scheduled 13:06

Sep 29

Arrival

Boise

BOI

Actual

Scheduled 15:05

Sep 29

Times shown in airport local time

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

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual

Arrival · UTC

Scheduled
Estimated
Not available
Actual

Recent arrivals

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

  • Seattle → Boise

    18 min late

  • Seattle → Boise

    30 min early

  • Seattle → Boise

    32 min late

  • Seattle → Boise

    21 min early

  • Seattle → Boise

    15 min early

Is DL3959 usually late?

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

Observed arrivals
27
On time
74%
of 27 arrivals
Late
26%
of 27 arrivals
Cancelled
0%
of 30 flights
Median arrival delay
3 min early
9 in 10 arrived within
46 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

Seattle (SEA) departures

Left more than 15 min late
232 of 431
Cancelled today
4

Related flights

All Delta Air Lines flights

Flight history and details
DL3959 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 29, 2026ArrivedSeattleBoise18
Sep 28, 2026ArrivedSeattleBoise-30
Sep 27, 2026ArrivedSeattleBoise32
Sep 26, 2026ArrivedSeattleBoise-21
Sep 25, 2026ArrivedSeattleBoise-15
Sep 24, 2026ArrivedSeattleBoise17
Sep 23, 2026ArrivedSeattleBoise-9
Sep 22, 2026ArrivedSeattleBoise-27
Sep 21, 2026ArrivedSeattleBoise-3
Sep 20, 2026ArrivedSeattleBoise-31
Sep 19, 2026ArrivedSeattleBoise13
Sep 18, 2026ArrivedSeattleBoise88
Sep 17, 2026ArrivedSeattleBoise167
Sep 16, 2026ArrivedSeattleBoise-6
Sep 15, 2026ArrivedSeattleBoise-3
Sep 14, 2026ArrivedSeattleBoise10
Sep 12, 2026ArrivedSeattleBoise-7
Sep 11, 2026ArrivedSeattleBoise-37
Sep 10, 2026ArrivedSeattleBoise-2
Sep 9, 2026ArrivedSeattleBoise-20
Sep 8, 2026ArrivedSeattleBoise7
Sep 7, 2026ArrivedSeattleBoise62
Sep 6, 2026ArrivedSeattleBoise-11
Sep 5, 2026ArrivedSeattleBoise-38
Sep 4, 2026ArrivedSeattleBoise36
Sep 1, 2026ArrivedSeattleBoise-3
Aug 31, 2026ArrivedSeattleBoise-9

Email me if DL3959 runs late

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