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Ranking & search details
10 nonstop, 30 with 1 connection, 6 with 2 · ranked by overall best · 15 hidden by your Most reliable time setting (they leave at other times of day) · showing the top 3
Most reliable time: morning departures (5–11 AM), the window with the best on-time odds for this trip. Turn off “Most reliable” under Departure time in Advanced settings to see every time.
Fares seen on this date: nonstop from 186 · any route from 108 (recent searches, one way, per person; each card opens the live price)
31 matching trips
Why this is our top pick
- This morning flight leaves in the most reliable time of day on this route: its best departures have an 81% reliability rating vs 66% for night departures.
- It has the same 30 in of legroom as the next-best option (Delta 1121 on the Airbus A320 or A321); it arrives on time 4 points more often.
6:05 AM9:45 AMATL → SAT
Southwest · WN 1542 / WN 1487
4h 40m1 stop
1h 15m in DAL
One ticket
81%arrive on time88% connections madeCheck fares
Aircraft and legroom reflect the planes each flight has flown recently. Airlines can swap planes and seat maps change, so check the airline’s seat map when you book.
ATL → SAT
Atlanta to San Antonio: 3,079 nonstop flights a year
On time (12 months)
79%
Cancelled
1.5%
avg delay 13 min
Best time to leave
Before 9 AM
88% on time vs 70% 6 to 9 PM
Most reliable airline
Southwest
82% chance on time
Lowest nonstop fare seen in the next two months: $186 (Southwest 1090 on 2026-11-20). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines82%
329 flights · 83% on time as flown · 0.7% cancel
- Delta Air Lines78%
2,611 flights · 79% on time as flown · 1.6% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM88%
333 flights · avg delay 6 min
- 9 AM to noon86%
569 flights · avg delay 9 min
- Noon to 3 PM81%
704 flights · avg delay 12 min
- 3 to 6 PM76%
566 flights · avg delay 15 min
- 6 to 9 PM70%
507 flights · avg delay 19 min
- After 9 PM78%
400 flights · avg delay 13 min
Best day: Wednesday (83%). Worst: Sunday (75%).
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