ON TIMEBOARD

OTZ → ANC on time

Ralph Wien Memorial (Kotzebue, AK) to Ted Stevens Anchorage (Anchorage, AK). Every scheduled flight, September 2025 to August 2026.

On time
79%
arrived < 15 min late
Cancelled
6.4%
716 flights
Typical arrival
−10 min
median vs schedule
When late
+60 min
average delay
Flights / day
2
1 airline

79% of flights from Kotzebue to Anchorage arrived on time over the past 12 months. That is about the typical U.S. route. The 11 a.m. departures ran on time 83% of the time; the 6 p.m. ones 76%. 11% of flights arrived more than an hour late or not at all.

How late?

The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for OTZ → ANC: when a flight was late, it was under 45 minutes late 55% of the time. About 1 in 22 flights landed an hour or more late, and 1 in 239 three hours or more; 6.4% were cancelled outright.

Share of all 716 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
Alaska Airlines71679%6.4%−10 min4.6%+60 minAlaska Airlines 50%, Horizon Air 50%

Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.

Best time of day to fly

On-time rate by scheduled departure hour (local time at OTZ). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%11 a.m. departures: 83% on time (358 flights)8311anoon departures: too few flights12p1 p.m. departures: too few flights1p2 p.m. departures: too few flights2p3 p.m. departures: too few flights3p4 p.m. departures: too few flights4p5 p.m. departures: too few flights5p6 p.m. departures: 76% on time (358 flights)766p
OTZ → ANC, share of flights arriving on time, by departure hour. Hours with under 100 flights are greyed out.
82%+ on time76–82%68–76%under 68%too few flights

Last flight of the day

On OTZ → ANC, each airline's last flight of the day was cancelled 9.2% of the time, against 3.6% for its earlier flights (2.5× as often). It arrived 3+ hours late 0.0% of the time (earlier flights: 0.8%). It matters more than the numbers suggest. Miss an earlier flight and there's another one that evening; miss the last one and you're usually waiting until morning.

AirlineLast departureLast: cancelledLast: 3h+ lateEarlier: cancelledNext morning
Alaska Airlines6:29 p.m.9.2%0.0%3.6%first flight 11:30 a.m.

Last flight = the airline's last scheduled departure on this route that day, on days it flies the route at least twice; past 12 months. Times are typical scheduled times over the latest three months.

If you need to be in ANC tonight, book an earlier flight so there's a backup if it's cancelled.

By month

Each calendar month pooled over 2023–2026. Best: September (91%). Worst: January (71%).

40%70%100%Jan: 71% on time (180 flights)71JanFeb: 75% on time (169 flights)75FebMar: 80% on time (186 flights)80MarApr: 83% on time (180 flights)83AprMay: 89% on time (186 flights)89MayJun: 83% on time (180 flights)83JunJul: 84% on time (183 flights)84JulAug: 84% on time (186 flights)84AugSep: 91% on time (180 flights)91SepOct: 78% on time (185 flights)78OctNov: 76% on time (173 flights)76NovDec: 72% on time (174 flights)72Dec

By day of week

DayFlightsOn timeCancelled
Monday10678%6.6%
Tuesday10479%7.7%
Wednesday10078%8.0%
Thursday98——
Friday10387%3.9%
Saturday10280%7.8%
Sunday10380%5.8%

Why flights were late

Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.

Late inbound plane 80%Airline (crew, maintenance, ops) 13%Air traffic & airport (NAS) 5%Severe weather 2%Security 1%

Cancellations: weather 27 · airline 16 · air traffic/airport 3

Month by month

Not enough months with data to draw a trend.

Flight numbers on this route

Regular flights with at least 120 scheduled trips in the past year. Sorted by departure time.

FlightDepartsFlightsOn timeCancelledTypical arrivalOperated by
AS 21306:29 p.m.16382%9.8%−7 minHorizon Air

Questions

How often are flights from OTZ to ANC on time?

79% of 716 scheduled flights from Kotzebue, AK to Anchorage, AK arrived within 15 minutes of schedule between September 2025 and August 2026. 6.4% were cancelled.

What is the best time of day to fly OTZ to ANC?

Flights scheduled to leave at 11 a.m. were the most reliable (83% on time). The 6 p.m. departures were the least (76%).

What month has the most delays from OTZ to ANC?

January (71% on time). The best month is September (91%), over 2023–2026.

Is the last flight of the day from OTZ to ANC more likely to be cancelled?

Yes. Each airline's last OTZ–ANC flight of the day was cancelled 9.2% of the time over the past year, against 3.6% for its earlier flights. If the last flight is cancelled, the next one is usually the following morning.

Related

Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.