ON TIMEBOARD
GEG Spokane / SAN San Diego

GEG → SAN on time

Spokane (Spokane, WA) to San Diego (San Diego, CA). Every scheduled flight, September 2025 to August 2026.

On time
84%
arrived < 15 min late
Cancelled
0.9%
442 flights
Typical arrival
−9 min
median vs schedule
When late
+37 min
average delay
Flights / day
1
2 airlines

84% of flights from Spokane to San Diego arrived on time over the past 12 months. That is better than the typical U.S. route. 3% 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 GEG → SAN: when a flight was late, it was under 45 minutes late 76% of the time. About 1 in 55 flights landed an hour or more late; 0.9% were cancelled outright.

Share of all 442 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
Alaska Airlines36488%1.1%−11 min1.1%+38 minAlaska Airlines
Southwest Airlines78—————Southwest Airlines

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 GEG). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%6 a.m. departures: too few flights (72 flights)6a7 a.m. departures: 92% on time (211 flights)927a8 a.m. departures: too few flights (70 flights)8a9 a.m. departures: too few flights9a10 a.m. departures: too few flights (6 flights)10a11 a.m. departures: too few flights (13 flights)11anoon departures: too few flights (53 flights)12p
GEG → SAN, 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

By airline and hour

DepartsAlaska Airlines
7 a.m.92%

By month

Each calendar month pooled over 2023–2026. Best: June (84%). Worst: July (80%).

40%70%100%Jan: too few flights (86 flights)JanFeb: too few flights (82 flights)FebMar: too few flights (97 flights)MarApr: too few flights (95 flights)AprMay: too few flights (98 flights)MayJun: 84% on time (110 flights)84JunJul: 80% on time (114 flights)80JulAug: 80% on time (116 flights)80AugSep: too few flights (89 flights)SepOct: too few flights (92 flights)OctNov: too few flights (86 flights)NovDec: too few flights (91 flights)Dec

By day of week

DayFlightsOn timeCancelled
Monday66——
Tuesday52——
Wednesday52——
Thursday64——
Friday65——
Saturday78——
Sunday65——

Why flights were late

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

Air traffic & airport (NAS) 49%Airline (crew, maintenance, ops) 34%Late inbound plane 17%

Cancellations: weather 2 · airline 1 · air traffic/airport 1

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 6738:15 a.m.30488%0.7%−10 minAlaska Airlines

Questions

How often are flights from GEG to SAN on time?

84% of 442 scheduled flights from Spokane, WA to San Diego, CA arrived within 15 minutes of schedule between September 2025 and August 2026. 0.9% were cancelled.

What month has the most delays from GEG to SAN?

July (80% on time). The best month is June (84%), over 2023–2026.

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.