SAT to ATL flight delays & on-time performance
Nonstop flights from San Antonio International Airport to Hartsfield Jackson Atlanta International Airport · 874 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at SAT or ATL right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from San Antonio (SAT) to Atlanta (ATL) arrived on time 86% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.7% were cancelled, and 5% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (87% on time); Southwest Airlines was the least (78%).
- Departures scheduled around 8am did best (95% on time); around 3pm did worst (72%).
- Wednesday was the most reliable day to fly (93% on time) and Sunday the least (81%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (40%).
Which airline is most on time from SAT to ATL?
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 |
|---|---|---|---|---|---|
| Delta Air Lines | 87% | 1.9% | 10 min | 4.5% | 2,611 |
| Southwest Airlines | 78% | 0.3% | 11 min | 6.0% | 305 |
| Frontier Airlines | 66% | 0.0% | 37 min | 17.1% | 83 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am93%365 flights
- 6am94%334 flights
- 7am88%116 flights
- 8am95%246 flights
- 10am89%302 flights
- 11am88%124 flights
- 12pm84%299 flights
- 1pm81%228 flights
- 2pm78%213 flights
- 3pm72%110 flights
- 4pm76%208 flights
- 5pm80%178 flights
- 6pm83%262 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday82%1.9% cancelled
- Tuesday91%0.5% cancelled
- Wednesday93%0.3% cancelled
- Thursday87%0.5% cancelled
- Friday82%1.7% cancelled
- Saturday88%3.7% cancelled
- Sunday81%3.4% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)40%
- Late-arriving aircraft38%
- Air traffic control & airport congestion19%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)78%
- Extreme weather22%
- Air traffic control & airport congestion0%
- Security0%
SAT to ATL: common questions
- How often are SAT to ATL flights on time?
- 86% 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 Atlanta cancelled?
- 1.7% of scheduled flights were cancelled (51 of 2,999).
- How long are typical delays?
- Across all flights the average arrival delay was 11 min (early arrivals count as zero). Flights that were late arrived 74 min behind schedule on average, and 5.0% of flights were an hour or more late.
- How long is taxi time at SAT?
- Flights on this route spent 13 min taxiing from the gate to takeoff on average.
Related routes
Return trip: ATL to SAT — 81% 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 → ATL, nonstop flights by US airlines that report to the DOT. How we calculate this.