SAN to SAT flight delays & on-time performance
Nonstop flights from San Diego International Airport to San Antonio 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
70%
arrived < 15 min late
Cancelled
0.7%
4 flights
Avg arrival delay
18 min
55 min when late
Airlines
1
610 flights tracked
Key facts
- Flights from San Diego (SAN) to San Antonio (SAT) arrived on time 70% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0.7% were cancelled, and 9% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 10am did best (88% on time); around 8pm did worst (27%).
- Wednesday was the most reliable day to fly (79% on time) and Friday the least (66%).
- The largest source of delay minutes was late-arriving aircraft (75%).
Which airline is most on time from SAN to SAT?
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 | 70% | 0.7% | 18 min | 9.1% | 610 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am100%14 flights
- 8am83%128 flights
- 9am84%81 flights
- 10am88%51 flights
- 4pm86%14 flights
- 5pm61%49 flights
- 6pm63%96 flights
- 7pm57%113 flights
- 8pm27%46 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday66%0.0% cancelled
- Tuesday74%0.0% cancelled
- Wednesday79%1.2% cancelled
- Thursday66%1.1% cancelled
- Friday66%1.1% cancelled
- Saturday77%0.0% cancelled
- Sunday66%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 aircraft75%
- Airline (crew, maintenance, cleaning, fueling)18%
- Air traffic control & airport congestion6%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion75%
- Extreme weather25%
- Airline (crew, maintenance, cleaning, fueling)0%
- Security0%
SAN to SAT: common questions
- How often are SAN to SAT flights on time?
- 70% 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 Diego to San Antonio cancelled?
- 0.7% of scheduled flights were cancelled (4 of 610).
- How long are typical delays?
- Across all flights the average arrival delay was 18 min (early arrivals count as zero). Flights that were late arrived 55 min behind schedule on average, and 9.1% of flights were an hour or more late.
- How long is taxi time at SAN?
- Flights on this route spent 18 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SAT to SAN — 78% on time
More flights from San Diego
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: SAN → SAT, nonstop flights by US airlines that report to the DOT. How we calculate this.