DL3940Delta Air Lines · COS → SLC
live · 17m ago
Route confirmed Delta Air Lines

DL3940 Colorado SpringsCOS Salt Lake CitySLC · 10:15

DL3940 by Delta Air Lines flies from Colorado Springs (COS) to Salt Lake City (SLC) for the Mon, Nov 2 departure.

Right nowExpected in Salt Lake City · today
10:15

arrival expected at SLC · on schedule

Typical arrival−18 minmedian over 13 operations
Cancellation0 in 13tracked operations · cancellation odds calculator →

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
11-01
−24 arrival
10-31
−4 arrival
10-30
−15 arrival
10-29
−22 arrival
10-28
−18 arrival
10-27
−7 arrival
10-26
+4 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The last 30 days

arrival outcome per operation

median arrival −18 min · 0 cancelled · 13 operations tracked

The route today

live boards
COSColorado SpringsOn-time likelyCOS delay board →
SLCSalt Lake CityOn-time likelySLC delay board →
COS→SLCevery carrier, schedules and on-time historyRoute intelligence →

Tomorrow at Salt Lake City

Forecast

Tue 3 Nov, local date

High12°Clikely 11°C to 14°C
Low3°Clikely 1°C to 4°C

Forecast: GateWeather · incl. data from ECMWF (CC BY 4.0, modified) · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

How DL3940 actually runs

Pro Flight Search has tracked every published board update for DL3940 across the COS and SLC boards: schedule changes, gate pushes and actual clocks. Usually lands ~6 min early. Based on 12 confirmed landings · 11/12 within 15 min of schedule.

The verdict above is that record speaking, so it reflects how DL3940 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
11-01COS SLC 10:15 09:51 (−24)
10-31COS SLC 10:15 10:11 (−4)
10-30COS SLC 10:15 10:00 (−15)
10-29COS SLC 10:15 09:53 (−22)
10-28COS SLC 10:15 09:57 (−18)
10-27COS SLC 10:15 10:08 (−7)
10-26COS SLC 10:15 10:19 (+4)
10-25COS SLC 10:15 10:44 (+29)
10-24COS SLC 10:15 09:54 (−21)
10-23COS SLC 10:15 10:03 (−12)
10-22COS SLC 10:15 09:41 (−34)
10-21COS SLC 10:15 09:53 (−22)
10-19COS SLC 10:15 09:48 (−27)

Aircraft

Recent tails: N292SY, N304SY, N289SY, N274SY.

Board clocks recorded as COS and SLC published them.

Planning around DL3940? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search: DL3940 Colorado Springs to Salt Lake City on-time performance, measured from the COS and SLC airport boards.

Canonical URL
https://proflightsearch.com/flight/DL3940
How we measure this →