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Flight Reliability

DL 3607 · Delta Air Lines

PSC → Seattle (PSC–SEA)82% of its flights flew this route. The rest (BOI–SLC, MSN–DTW) are included in these numbers.

100
Nerd Approved
WanderNerd Reliability Score
96%
Arrive within 15 minutes
6 min early
Average arrival delay
0%
Cancelled
15 min early
Median arrival delay

Based on 239 historical flights. Data through May 2026.

What the data says

Sunday has been the better bet.

A small edge: 100% on time on Sundays against 94% on Wednesdays.

Better than the PSC–SEA route average.

DL 3607 arrived on time 96% of the time, versus 88% across the PSC–SEA route.

Better than the Delta Air Lines network average.

DL 3607 arrived on time 96% of the time, versus 81% across the Delta Air Lines network.

It basically never cancels.

Out of 239 scheduled flights, only 0.0% were cancelled.

The breakdown

On-time by weekday
  • Mon97%(34 flights)
  • Tue94%(34 flights)
  • Wed94%(32 flights)
  • Thu97%(33 flights)
  • Fri94%(35 flights)
  • Sat97%(35 flights)
  • Sun100%(36 flights)
On-time by departure window
  • 3–6 AM98%(89 flights)
  • 6–9 AM96%(143 flights)
  • 9 AM–12 PM—(7 flights)
On-time trend by month
100%
May

Jun 97% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202597%30
July 202597%31
August 2025100%31
September 202597%30
October 202590%31
November 202593%30
December 202596%28
May 2026100%25
Departures on time
96%
Diverted
0%
Flights flown
239
Months covered
9

Same route, other flights

Keep nerding

Based on 239 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.