Route on-time record
SAT to ATL: most on-time flights and the best time to fly
San Antonio (San Antonio International Airport) to Atlanta (Hartsfield Jackson Atlanta International Airport). 3,078 nonstop flights in Jun 2025 to May 2026, 85% arrived within 15 minutes and 1.6% were cancelled. The most reliable flight number was Delta 1073 at 5:10 AM.
Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.
SAT → ATL
San Antonio to Atlanta: 3,078 nonstop flights a year
On time (12 months)
85%
Cancelled
1.6%
avg delay 12 min
Best time to leave
Before 9 AM
93% on time vs 74% 3 to 6 PM
Most reliable airline
Delta
85% chance on time
Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Most reliable nonstop flights
Ranked by the chance the flight operates and arrives within 15 minutes of schedule, from Jun 2025 to May 2026 records.
#1 · Delta 1073
5:10 AM → 8:30 AM2h 24m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
- On time (history)
- 94%
- Cancelled
- 1.9%
- Avg arrival delay
- 7 min
- Arrived on time 94% of the time (357 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 3 to 6 PM: 74%).
Strong track record · 357 flights
Find Delta 1073 fares Opens this date on Aviasales#2 · Delta 1066
6:13 AM → 9:33 AM2h 23m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
- On time (history)
- 94%
- Cancelled
- 1.7%
- Avg arrival delay
- 7 min
- Arrived on time 94% of the time (356 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 3 to 6 PM: 74%).
Strong track record · 356 flights
Find Delta 1066 fares Opens this date on Aviasales#3 · Delta 998
8:00 AM → 11:14 AM2h 19m nonstop
Local times, typical schedule. Last flown 2026-05-31.
91%
chance on time
- On time (history)
- 92%
- Cancelled
- 0.7%
- Avg arrival delay
- 7 min
- Arrived on time 92% of the time (281 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 93% on time; 3 to 6 PM: 74%).
Strong track record · 281 flights
Find Delta 998 fares Opens this date on Aviasales#4 · Delta 1676
10:50 AM → 2:07 PM2h 18m nonstop
Local times, typical schedule. Last flown 2026-05-31.
86%
chance on time
- On time (history)
- 89%
- Cancelled
- 4.1%
- Avg arrival delay
- 12 min
- Arrived on time 89% of the time (162 flights, Jun 2025 to May 2026).
- Cancelled 4.1% of the time (7 of 170).
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 162 flights
Find Delta 1676 fares Opens this date on Aviasales#5 · Delta 2517
5:30 PM → 8:57 PM2h 27m nonstop
Local times, typical schedule. Last flown 2026-04-11.
83%
chance on time
- On time (history)
- 93%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 93% of the time (15 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 74% on time; Before 9 AM: 93%).
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Delta 2517 fares Opens this date on Aviasales#6 · Delta 1121
12:08 PM → 3:42 PM2h 19m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 81%
- Cancelled
- 2.7%
- Avg arrival delay
- 14 min
- Arrived on time 81% of the time (72 flights, Jun 2025 to May 2026).
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Moderate track record · 72 flights
Find Delta 1121 fares Opens this date on Aviasales#7 · Delta 1465
6:17 PM → 9:44 PM2h 27m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 81%
- Cancelled
- 1.8%
- Avg arrival delay
- 13 min
- Arrived on time 81% of the time (270 flights, Jun 2025 to May 2026).
Strong track record · 270 flights
Find Delta 1465 fares Opens this date on Aviasales#8 · Delta 2009
4:29 PM → 7:48 PM2h 27m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
- On time (history)
- 77%
- Cancelled
- 2.1%
- Avg arrival delay
- 12 min
- Arrived on time 77% of the time (141 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (3 to 6 PM: 74% on time; Before 9 AM: 93%).
Moderate track record · 141 flights
Find Delta 2009 fares Opens this date on Aviasales#9 · Delta 1408
1:37 PM → 4:54 PM2h 18m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
- On time (history)
- 77%
- Cancelled
- 2.2%
- Avg arrival delay
- 20 min
- Arrived on time 77% of the time (306 flights, Jun 2025 to May 2026).
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
- 64% of its delay minutes came from the plane arriving late from an earlier flight.
Strong track record · 306 flights
Find Delta 1408 fares Opens this date on Aviasales#10 · Southwest 4144
1:55 PM → 5:10 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
74%
chance on time
- On time (history)
- 72%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 72% of the time (46 flights, Jun 2025 to May 2026).
- Never cancelled in 46 scheduled flights.
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
- Short track record (46 flights), so its score leans on the airline's record at this hour.
Limited track record · 46 flights
Find Southwest 4144 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines85%
2,610 flights · 87% on time as flown · 1.7% cancel
- Southwest Airlines80%
329 flights · 80% on time as flown · 0.7% cancel
- Spirit Airlines78%
38 flights · 55% on time as flown · 1.2% cancel
- Frontier Airlines67%
101 flights · 61% on time as flown · 2.1% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM93%
1,060 flights · avg delay 7 min
- 9 AM to noon88%
458 flights · avg delay 10 min
- Noon to 3 PM79%
787 flights · avg delay 15 min
- 3 to 6 PM74%
486 flights · avg delay 21 min
- 6 to 9 PM81%
287 flights · avg delay 14 min
Best day: Wednesday (88%). Worst: Sunday (81%).
On time by month
All airlines, Jun 2023 to May 2026. Several years per month, so one stormy season doesn't define a month. Travel-month estimates use this seasonal pattern.
What delays this route
- Late-arriving aircraft45%
- Airline (crew, maintenance, boarding)35%
- Air traffic control and airport volume17%
- Severe weather4%
Share of delay minutes by the cause airlines report to the US DOT.
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure
SAT to ATL questions
- What time of day is best to fly SAT to ATL?
- Before 9 AM: 93% of flights arrived on time, against 74% for departures 3 to 6 PM. Later flights inherit delays from earlier ones, so the first departures of the day usually run best.
- Which airline is most on time from SAT to ATL?
- Delta, with a season-adjusted 85% chance of operating and arriving on time over 2,610 flights. The adjustment compares each airline with what the route did in the months it flew, so a carrier that skipped a stormy month gets no free credit.
- What is the worst month for delays on SAT to ATL?
- May (75% on time); the best was September (93%), averaged over Jun 2023 to May 2026.
- Is this a prediction for my flight?
- No. These are historical odds from the US DOT on-time reports, FAA advisories and airport weather records. Check your flight status and the FAA delay board on the day you fly.
More routes from SAT
- ATL to SAT (return)
- SAT to DFW 77%
- SAT to DEN 81%
- SAT to DAL 84%
- SAT to PHX 83%
- SAT to IAH 81%
- SAT to LAS 83%
- SAT to ORD 76%
- SAT to LAX 87%
- SAT to HOU 74%
- SAT to CLT 86%
- SAT to MCO 77%
- SAT to SLC 86%
Live status: FAA delays and ground stops