ON TIMEBOARD

DL 931 on time

Delta Air Lines 931: Seattle to Anchorage at 5:30 p.m. (past 12 months)

On time
76%
212 flights · likely 70–81%
Cancelled
0.9%
of scheduled flights
Typical arrival
−4 min
median vs schedule
When late
+62 min
average delay
Similar flights
72%
DL, same route & hour

About 1 in 4 DL 931 flights from Seattle arrived 15+ minutes late, diverted or cancelled over the past year (24%); 0.9% were cancelled. The typical flight landed 4 minutes early.

DL 931: SEA → ANC

Scheduled to leave Seattle at 5:30 p.m. local time. Over the past year it arrived on time 76% of the time (212 flights), better than other DL flights on the route at that hour (72%). Last seen in the data Aug 31, 2026.

Month by month

30%65%100%May 2025: 93% on time (29 flights)93MayJun 2025: 77% on time (30 flights)77JunJul 2025: 77% on time (31 flights)77JulAug 2025: 81% on time (31 flights)81AugSep 2025: 93% on time (30 flights)93SepOct 2025: 81% on time (31 flights)81OctNov 2025: 80% on time (30 flights)80NovDec 2025: 39% on time (31 flights)39DecJan 2026: too few flights (4 flights)JanJun 2026: 71% on time (24 flights)71JunJul 2026: 90% on time (31 flights)90JulAug 2026: 81% on time (31 flights)81Aug

By day of week

DayFlightsOn time
Monday3168%
Tuesday3077%
Wednesday3080%
Thursday3087%
Friday3070%
Saturday3073%
Sunday3177%

Why it was late

Airline (crew, maintenance, ops) 61%Late inbound plane 19%Air traffic & airport (NAS) 17%Severe weather 2%

All flights SEA → ANC · Connecting off DL 931? Check the risk

Questions

How often is DL 931 from SEA to ANC late?

Delta Air Lines 931 from Seattle, WA to Anchorage, AK arrived 15 or more minutes late, was diverted or was cancelled on 24% of 212 scheduled flights between September 2025 and August 2026. 0.9% were cancelled.

Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Delta Air Lines for today's flight. Method.