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Flight Reliability

DL 358 · Delta Air Lines

Seattle → Tampa (SEA–TPA)

76
Usually Fine
WanderNerd Reliability Score
76%
Arrive within 15 minutes
10 min
Average arrival delay
0.6%
Cancelled
1 min early
Median arrival delay

Based on 363 historical flights. Data through May 2026.

What the data says

The 12–3 PM departure wins.

DL 358 departing between 12–3 PM arrived on time 88% of the time, versus 75% between 9 AM–12 PM.

Wednesdays have been rough.

DL 358 arrived on time 86% of the time on Saturdays and just 71% on Wednesdays. That gap is worth planning around.

A bit behind the Delta Air Lines network.

DL 358 arrived on time 76% of the time, versus 81% across the Delta Air Lines network.

Trending in the right direction.

DL 358 arrived on time 82% of the time over the last three months in the data, compared with 73% in the three months before that.

The breakdown

On-time by weekday
  • Mon74%(50 flights)
  • Tue75%(51 flights)
  • Wed71%(52 flights)
  • Thu80%(50 flights)
  • Fri73%(51 flights)
  • Sat86%(51 flights)
  • Sun75%(51 flights)
On-time by departure window
  • 9 AM–12 PM75%(306 flights)
  • 12–3 PM88%(49 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
84%
May

Jun 64% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202564%28
July 202555%31
August 202568%31
September 202590%30
October 202583%30
November 202589%27
December 202559%29
January 202677%31
February 202682%28
March 202673%30
April 202690%30
May 202684%31
Departures on time
78%
Diverted
1.4%
Flights flown
356
Months covered
12

Same route, other flights

Keep nerding

Based on 363 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.