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Flight Reliability

DL 344 · Delta Air Lines

Seattle → Kahului (SEA–OGG)

88
Pretty Reliable
WanderNerd Reliability Score
89%
Arrive within 15 minutes
9 min early
Average arrival delay
1.1%
Cancelled
12 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Tuesdays have been rough.

DL 344 arrived on time 96% of the time on Wednesdays and just 80% on Tuesdays. That gap is worth planning around.

Better than the SEA–OGG route average.

DL 344 arrived on time 89% of the time, versus 79% across the SEA–OGG route.

Better than the Delta Air Lines network average.

DL 344 arrived on time 89% of the time, versus 81% across the Delta Air Lines network.

Ticking up lately.

DL 344 arrived on time 90% 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
  • Mon94%(50 flights)
  • Tue80%(51 flights)
  • Wed96%(52 flights)
  • Thu89%(52 flights)
  • Fri92%(51 flights)
  • Sat90%(50 flights)
  • Sun82%(51 flights)
On-time by departure window
  • 12–3 PM89%(319 flights)
  • 3–6 PM87%(38 flights)
On-time trend by month
97%
May

Jun 93% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%30
July 202590%30
August 202594%31
September 202587%30
October 202594%31
November 202583%30
December 202583%29
January 202694%31
February 202681%26
March 202686%28
April 202687%30
May 202697%31
Departures on time
89%
Diverted
1.1%
Flights flown
357
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.