Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 743 · Delta Air Lines

Atlanta → Sacramento (ATL–SMF)87% of its flights flew this route. The rest (SMF–ATL) are included in these numbers.

83
Pretty Reliable
WanderNerd Reliability Score
79%
Arrive within 15 minutes
4 min
Average arrival delay
0.9%
Cancelled
5 min early
Median arrival delay

Based on 325 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

DL 743 departing between 9 PM–12 AM arrived on time 100% of the time, versus 73% between 3–6 PM.

Sunday scaries are real for this one.

DL 743 arrived on time 91% of the time on Wednesdays and just 71% on Sundays. That gap is worth planning around.

A bit behind the ATL–SMF route.

DL 743 arrived on time 79% of the time, versus 82% across the ATL–SMF route.

Slipping a little lately.

DL 743 arrived on time 82% of the time over the last three months in the data, compared with 86% in the three months before that.

The breakdown

On-time by weekday
  • Mon78%(51 flights)
  • Tue83%(54 flights)
  • Wed91%(54 flights)
  • Thu78%(54 flights)
  • Fri77%(53 flights)
  • Sat—(4 flights)
  • Sun71%(51 flights)
On-time by departure window
  • 3–6 PM73%(198 flights)
  • 6–9 PM85%(84 flights)
  • 9 PM–12 AM100%(39 flights)
On-time trend by month
64%
May

Jun 58% → May 64% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202558%26
July 202565%26
August 202570%20
September 202577%17
October 202583%23
November 202577%17
December 202576%29
January 202691%35
February 202691%22
March 202696%45
April 202686%36
May 202664%25
Departures on time
80%
Diverted
0.3%
Flights flown
321
Months covered
12

Same route, other flights

Keep nerding

Based on 325 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.