Skip to content
WanderNerd
Check a flight

Flight Reliability

DL 853 · Delta Air Lines

Anchorage → Seattle (ANC–SEA)

95
Nerd Approved
WanderNerd Reliability Score
91%
Arrive within 15 minutes
3 min early
Average arrival delay
0.8%
Cancelled
14 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 6–9 AM arrived on time 92% of the time, against 87% between 3–6 AM.

Sunday scaries are real for this one.

DL 853 arrived on time 94% of the time on Wednesdays. On Sundays: 87%.

A bit ahead of the ANC–SEA route.

DL 853 arrived on time 91% of the time, versus 85% across the ANC–SEA route.

Better than the Delta Air Lines network average.

DL 853 arrived on time 91% of the time, versus 81% across the Delta Air Lines network.

The breakdown

On-time by weekday
  • Mon87%(52 flights)
  • Tue92%(52 flights)
  • Wed94%(52 flights)
  • Thu92%(52 flights)
  • Fri94%(52 flights)
  • Sat88%(50 flights)
  • Sun87%(52 flights)
On-time by departure window
  • 3–6 AM87%(93 flights)
  • 6–9 AM92%(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 202597%31
August 202597%31
September 202590%30
October 202581%31
November 202580%30
December 202590%30
January 202683%30
February 202693%27
March 202684%31
April 202697%30
May 2026100%31
Departures on time
94%
Diverted
0%
Flights flown
362
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.