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Flight Reliability

DL 5515 · Delta Air Lines

Atlanta → FAY (ATL–FAY)84% of its flights flew this route. The rest (ATL–TLH, TLH–ATL) are included in these numbers.

60
A Little Dicey
WanderNerd Reliability Score
73%
Arrive within 15 minutes
16 min
Average arrival delay
4.5%
Cancelled
5 min early
Median arrival delay

Based on 176 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

DL 5515 departing between 3–6 PM arrived on time 80% of the time, versus 72% between 9 PM–12 AM.

Sunday scaries are real for this one.

DL 5515 arrived on time 96% of the time on Thursdays and just 54% on Sundays. That gap is worth planning around.

A bit behind the ATL–FAY route.

DL 5515 arrived on time 73% of the time, versus 79% across the ATL–FAY route.

Lagging the Delta Air Lines network.

DL 5515 arrived on time 73% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon58%(24 flights)
  • Tue80%(25 flights)
  • Wed56%(25 flights)
  • Thu96%(25 flights)
  • Fri79%(19 flights)
  • Sat89%(26 flights)
  • Sun54%(24 flights)
On-time by departure window
  • 6–9 AM—(4 flights)
  • 9 AM–12 PM—(1 flights)
  • 12–3 PM—(2 flights)
  • 3–6 PM80%(15 flights)
  • 6–9 PM—(5 flights)
  • 9 PM–12 AM72%(141 flights)
On-time trend by month
70%
May

Oct 70% → May 70% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
October 202570%10
November 2025100%10
January 202683%24
February 202685%27
March 202653%30
April 202673%30
May 202670%30
Departures on time
73%
Diverted
0%
Flights flown
168
Months covered
10

Same route, other flights

Keep nerding

Based on 176 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.