Best Time to Fly COS to SAN: On-Time Stats by Hour & Airline
City of Colorado Springs Municipal → San Diego International
Data through July 2026 · Last updated October 18, 2026
Over the last 12 months, 65.7% of Colorado Springs (COS) to San Diego (SAN) flights arrived on time (169 scheduled flights). That is 11.9 points below the national average of 77.6%.
Southwest Airlines was the only reporting airline with regular flights on this route.
The cancellation rate was 0.0% (US average 1.8%).
COS to SAN on-time performance by airline
Last 12 months. Airlines with fewer than 30 completed flights are marked “limited data”.
| Airline | On time | Avg delay when late | Cancelled | Flights |
|---|---|---|---|---|
| Southwest Airlines | 65.7% | 57 min | 0.0% | 169 |
80%+ good 70–79.9% fair <70% poor
Best time of day to fly COS to SAN
On-time arrival % by scheduled departure hour (local time), 187 flights over 24 months.
Show the numbers
| Departure hour | On time | Cancelled | Flights |
|---|---|---|---|
| 10am–11am | Limited data | 21 | |
| 11am–12pm | Limited data | 12 | |
| 12pm–1pm | 65.6% | 0.0% | 61 |
| 1pm–2pm | Limited data | 4 | |
| 2pm–3pm | 64.2% | 0.0% | 53 |
| 3pm–4pm | Limited data | 13 | |
| 4pm–5pm | Limited data | 9 | |
| 6pm–7pm | Limited data | 13 | |
| 7pm–8pm | Limited data | 1 | |
Best day of the week
24 months, by day of departure.
Best month to fly
24 months, by calendar month.
Holiday travel on COS to SAN
On-time arrivals during holiday periods compared with all other days, last 24 months.
| Period | On time | vs other days | Cancelled | Flights |
|---|---|---|---|---|
| Thanksgiving week (Tue before to Mon after) | Limited data | 11 | ||
| Christmas & New Year (Dec 20 - Jan 3) | Limited data | 21 | ||
| Summer peak (Jun 15 - Aug 15) | Limited data | 27 | ||
| All other days | 72.7% | — | 0.0% | 128 |
What causes delays on this route
Share of reported delay minutes, last 12 months (BTS cause categories).