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Flight Reliability

DL 1609 · Delta Air Lines

Minneapolis → St. Louis (MSP–STL)

76
Usually Fine
WanderNerd Reliability Score
75%
Arrive within 15 minutes
9 min
Average arrival delay
1.4%
Cancelled
7 min early
Median arrival delay

Based on 364 historical flights. Data through May 2026.

What the data says

9 PM–12 AM has a slight edge.

Departures between 9 PM–12 AM arrived on time 75% of the time, against 69% between 6–9 PM.

Mondays have been rough.

DL 1609 arrived on time 82% of the time on Wednesdays and just 67% on Mondays. That gap is worth planning around.

A bit behind the MSP–STL route.

DL 1609 arrived on time 75% of the time, versus 80% across the MSP–STL route.

A bit behind the Delta Air Lines network.

DL 1609 arrived on time 75% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon67%(52 flights)
  • Tue77%(52 flights)
  • Wed82%(51 flights)
  • Thu75%(51 flights)
  • Fri71%(51 flights)
  • Sat72%(50 flights)
  • Sun82%(51 flights)
On-time by departure window
  • 6–9 PM69%(16 flights)
  • 9 PM–12 AM75%(342 flights)
On-time trend by month
90%
May

Jun 48% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202548%29
July 202548%29
August 202581%31
September 202583%30
October 202568%31
November 202579%29
December 202568%31
January 202677%31
February 202696%28
March 202679%29
April 202683%30
May 202690%30
Departures on time
76%
Diverted
0.3%
Flights flown
358
Months covered
12

Same route, other flights

Keep nerding

Based on 364 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.