SAT to SAN flight delays & on-time performance
Nonstop flights from San Antonio International Airport to San Diego International Airport · 1,129 miles · Aug 2025 – Jul 2026
- SAN: Airport closed. Closed, expected to reopen Oct 11 at 13:00 UTC.
On-time arrivals
78%
arrived < 15 min late
Cancelled
0.3%
2 flights
Avg arrival delay
13 min
54 min when late
Airlines
1
610 flights tracked
Key facts
- Flights from San Antonio (SAT) to San Diego (SAN) arrived on time 78% of the time in Aug 2025 – Jul 2026, in line with the national average.
- 0.3% were cancelled, and 7% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 8am did best (100% on time); around 8pm did worst (39%).
- Saturday was the most reliable day to fly (86% on time) and Sunday the least (64%).
- The largest source of delay minutes was late-arriving aircraft (51%).
Which airline is most on time from SAT to SAN?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Southwest Airlines | 78% | 0.3% | 13 min | 7.4% | 610 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am94%219 flights
- 7am90%73 flights
- 8am100%20 flights
- 9am100%10 flights
- 5pm80%57 flights
- 6pm68%96 flights
- 7pm46%98 flights
- 8pm39%28 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday82%0.0% cancelled
- Tuesday85%0.0% cancelled
- Wednesday81%0.0% cancelled
- Thursday76%0.0% cancelled
- Friday75%1.1% cancelled
- Saturday86%0.0% cancelled
- Sunday64%1.1% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft51%
- Airline (crew, maintenance, cleaning, fueling)27%
- Air traffic control & airport congestion18%
- Extreme weather4%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Air traffic control & airport congestion0%
- Security0%
SAT to SAN: common questions
- How often are SAT to SAN flights on time?
- 78% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from San Antonio to San Diego cancelled?
- 0.3% of scheduled flights were cancelled (2 of 610).
- How long are typical delays?
- Across all flights the average arrival delay was 13 min (early arrivals count as zero). Flights that were late arrived 54 min behind schedule on average, and 7.4% of flights were an hour or more late.
- How long is taxi time at SAT?
- Flights on this route spent 10 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SAN to SAT — 70% on time
More flights from San Antonio
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SAT → SAN, nonstop flights by US airlines that report to the DOT. How we calculate this.