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Flight Reliability

DL 2444 · Delta Air Lines

Phoenix → Seattle (PHX–SEA)

99
Nerd Approved
WanderNerd Reliability Score
96%
Arrive within 15 minutes
13 min early
Average arrival delay
0.8%
Cancelled
19 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Mornings have a slight edge.

Departures between 3–6 AM arrived on time 100% of the time, against 94% between 6–9 AM.

Friday is doing you no favors.

DL 2444 arrived on time 100% of the time on Thursdays. On Fridays: 89%.

Better than the PHX–SEA route average.

DL 2444 arrived on time 96% of the time, versus 84% across the PHX–SEA route.

Better than the Delta Air Lines network average.

DL 2444 arrived on time 96% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon94%(51 flights)
  • Tue98%(52 flights)
  • Wed98%(52 flights)
  • Thu100%(51 flights)
  • Fri89%(52 flights)
  • Sat96%(51 flights)
  • Sun96%(51 flights)
On-time by departure window
  • 3–6 AM100%(91 flights)
  • 6–9 AM94%(269 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 2025100%31
August 2025100%31
September 2025100%30
October 202590%31
November 202593%30
December 202594%31
January 202693%30
February 2026100%26
March 202690%30
April 202693%29
May 2026100%31
Departures on time
96%
Diverted
0.5%
Flights flown
360
Months covered
12

Same route, other flights

Keep nerding

Based on 365 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.