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Flight Reliability

DL 2079 · Delta Air Lines

Salt Lake City → Baltimore (SLC–BWI)

78
Usually Fine
WanderNerd Reliability Score
78%
Arrive within 15 minutes
5 min
Average arrival delay
1.7%
Cancelled
2 min
Median arrival delay

Based on 360 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

DL 2079 departing between 3–6 PM arrived on time 86% of the time, versus 76% between 9 PM–12 AM.

Friday is doing you no favors.

DL 2079 arrived on time 86% of the time on Wednesdays and just 69% on Fridays. That gap is worth planning around.

A bit behind the Delta Air Lines network.

DL 2079 arrived on time 78% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon75%(51 flights)
  • Tue80%(51 flights)
  • Wed86%(49 flights)
  • Thu82%(51 flights)
  • Fri69%(51 flights)
  • Sat84%(51 flights)
  • Sun71%(49 flights)
On-time by departure window
  • 3–6 PM86%(79 flights)
  • 9 PM–12 AM76%(274 flights)
On-time trend by month
23%
May

Jun 70% → May 23% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202570%30
July 202584%31
August 202594%31
September 2025100%30
October 202580%30
November 202593%27
December 202554%28
January 202679%29
February 202677%26
March 202694%31
April 202693%29
May 202623%31
Departures on time
87%
Diverted
0.3%
Flights flown
353
Months covered
12

Same route, other flights

Keep nerding

Based on 360 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.