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Flight Reliability

DL 1090 · Delta Air Lines

Tampa → Seattle (TPA–SEA)

92
Nerd Approved
WanderNerd Reliability Score
88%
Arrive within 15 minutes
0 min
Average arrival delay
0.8%
Cancelled
8 min early
Median arrival delay

Based on 363 historical flights. Data through May 2026.

What the data says

The 6–9 AM departure wins.

DL 1090 departing between 6–9 AM arrived on time 89% of the time, versus 73% between 9 AM–12 PM.

Skip Tuesday if you can.

DL 1090 arrived on time 92% of the time on Wednesdays. On Tuesdays: 79%.

Better than the TPA–SEA route average.

DL 1090 arrived on time 88% of the time, versus 76% across the TPA–SEA route.

A bit ahead of the Delta Air Lines network.

DL 1090 arrived on time 88% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon89%(52 flights)
  • Tue79%(52 flights)
  • Wed92%(51 flights)
  • Thu90%(51 flights)
  • Fri90%(50 flights)
  • Sat86%(51 flights)
  • Sun90%(52 flights)
On-time by departure window
  • 6–9 AM89%(344 flights)
  • 9 AM–12 PM73%(15 flights)
On-time trend by month
87%
May

Jun 90% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202590%30
July 202577%31
August 202594%31
September 202590%30
October 202597%29
November 202593%29
December 202587%30
January 202681%31
February 202671%28
March 202693%29
April 202697%30
May 202687%31
Departures on time
92%
Diverted
0.3%
Flights flown
359
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.