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Flight Reliability

DL 5518 · Delta Air Lines

Minneapolis → Norfolk (MSP–ORF)86% of its flights flew this route. The rest (ORF–MSP, ATL–TRI) are included in these numbers.

57
A Little Dicey
WanderNerd Reliability Score
63%
Arrive within 15 minutes
19 min
Average arrival delay
1.8%
Cancelled
5 min
Median arrival delay

Based on 382 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

DL 5518 departing between 3–6 PM arrived on time 73% of the time, versus 60% between 6–9 PM.

Sunday scaries are real for this one.

DL 5518 arrived on time 78% of the time on Thursdays and just 45% on Sundays. That gap is worth planning around.

Well behind the Delta Air Lines network.

DL 5518 arrived on time 63% of the time, versus 81% across the Delta Air Lines network.

Recent months have been rougher.

DL 5518 arrived on time 57% of the time over the last three months in the data, compared with 64% in the three months before that.

The breakdown

On-time by weekday
  • Mon66%(55 flights)
  • Tue56%(57 flights)
  • Wed75%(56 flights)
  • Thu78%(55 flights)
  • Fri53%(55 flights)
  • Sat71%(45 flights)
  • Sun45%(49 flights)
On-time by departure window
  • 3–6 AM—(2 flights)
  • 12–3 PM64%(238 flights)
  • 3–6 PM73%(11 flights)
  • 6–9 PM60%(110 flights)
  • 9 PM–12 AM64%(11 flights)
On-time trend by month
47%
May

Jun 42% → May 47% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202542%24
July 202553%30
August 202566%29
September 202563%30
October 202577%31
November 202589%27
December 202547%30
January 202675%48
February 202670%33
March 202673%30
April 202650%30
May 202647%30
Departures on time
74%
Diverted
0.8%
Flights flown
372
Months covered
12

Same route, other flights

Keep nerding

Based on 382 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.