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Flight Reliability

DL 354 · Delta Air Lines

Raleigh–Durham → Seattle (RDU–SEA)93% of its flights flew this route. The rest (ATL–ICT, ICT–ATL) are included in these numbers.

85
Pretty Reliable
WanderNerd Reliability Score
86%
Arrive within 15 minutes
2 min early
Average arrival delay
1.1%
Cancelled
8 min early
Median arrival delay

Based on 376 historical flights. Data through May 2026.

What the data says

Mornings have a slight edge.

Departures between 6–9 AM arrived on time 87% of the time, against 82% between 3–6 PM.

Mondays have been rough.

DL 354 arrived on time 93% of the time on Saturdays and just 72% on Mondays. That gap is worth planning around.

Better than the RDU–SEA route average.

DL 354 arrived on time 86% of the time, versus 78% across the RDU–SEA route.

A bit ahead of the Delta Air Lines network.

DL 354 arrived on time 86% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon72%(54 flights)
  • Tue85%(54 flights)
  • Wed88%(51 flights)
  • Thu92%(50 flights)
  • Fri89%(53 flights)
  • Sat93%(53 flights)
  • Sun85%(53 flights)
On-time by departure window
  • 6–9 AM87%(340 flights)
  • 3–6 PM82%(28 flights)
On-time trend by month
87%
May

Jun 100% → May 87% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 2025100%30
July 202594%31
August 202597%31
September 202597%30
October 202584%31
November 202593%29
December 202567%39
January 202681%32
February 202673%26
March 202676%29
April 202690%30
May 202687%30
Departures on time
89%
Diverted
1.1%
Flights flown
368
Months covered
12

Same route, other flights

Keep nerding

Based on 376 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.