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Flight Reliability

DL 944 · Delta Air Lines

Detroit → Seattle (DTW–SEA)90% of its flights flew this route. The rest (DCA–SEA) are included in these numbers.

74
Usually Fine
WanderNerd Reliability Score
70%
Arrive within 15 minutes
9 min
Average arrival delay
1.1%
Cancelled
1 min early
Median arrival delay

Based on 362 historical flights. Data through May 2026.

What the data says

Mondays have been rough.

DL 944 arrived on time 79% of the time on Thursdays and just 63% on Mondays. That gap is worth planning around.

A bit behind the DTW–SEA route.

DL 944 arrived on time 70% of the time, versus 74% across the DTW–SEA route.

Lagging the Delta Air Lines network.

DL 944 arrived on time 70% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon63%(51 flights)
  • Tue71%(51 flights)
  • Wed71%(51 flights)
  • Thu79%(52 flights)
  • Fri69%(52 flights)
  • Sat74%(50 flights)
  • Sun67%(51 flights)
On-time trend by month
74%
May

Jun 74% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202574%27
July 202554%28
August 202594%31
September 2025100%30
October 202590%31
November 202573%30
December 202545%31
January 202673%30
February 202661%28
March 202632%31
April 202673%30
May 202674%31
Departures on time
77%
Diverted
0%
Flights flown
358
Months covered
12

Same route, other flights

Keep nerding

Based on 362 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.