Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 949 · Delta Air Lines

Seattle → Minneapolis (SEA–MSP)

82
Pretty Reliable
WanderNerd Reliability Score
83%
Arrive within 15 minutes
5 min
Average arrival delay
1.5%
Cancelled
8 min early
Median arrival delay

Based on 324 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

DL 949 departing between 9 PM–12 AM arrived on time 100% of the time, versus 78% between 6–9 PM.

Sunday scaries are real for this one.

DL 949 arrived on time 89% of the time on Fridays and just 69% on Sundays. That gap is worth planning around.

A bit behind the SEA–MSP route.

DL 949 arrived on time 83% of the time, versus 86% across the SEA–MSP route.

Slipping a little lately.

DL 949 arrived on time 83% of the time over the last three months in the data, compared with 86% in the three months before that.

The breakdown

On-time by weekday
  • Mon85%(46 flights)
  • Tue81%(47 flights)
  • Wed87%(47 flights)
  • Thu85%(48 flights)
  • Fri89%(47 flights)
  • Sat82%(34 flights)
  • Sun69%(48 flights)
On-time by departure window
  • 3–6 PM85%(171 flights)
  • 6–9 PM78%(134 flights)
  • 9 PM–12 AM100%(12 flights)
On-time trend by month
84%
May

Jun 67% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202567%30
July 202581%31
August 202589%18
September 202594%17
October 202585%26
November 202574%23
December 202576%25
January 202690%30
February 202693%28
March 202676%29
April 202690%29
May 202684%31
Departures on time
76%
Diverted
0.6%
Flights flown
317
Months covered
12

Same route, other flights

Keep nerding

Based on 324 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.