Find a better flight
US domestic flights only at this time
Filter by
Filters apply to trips matching your advanced settings.
Departing flights
Ranking & search details
4 nonstop, 40 with 1 connection, 6 with 2 · ranked by overall best · 9 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.
41 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 84% reliability rating vs 44% for midday departures.
- Compared with the next-best option (Southwest 478 on the Boeing 737-700 or 737 MAX 8), it flies a newer plane (about 4 vs 15 years old).
- Legroom was comparable across the flights we compared (30–31 in), so it didn't set them apart.
5:35 AM10:25 AMBNA → SAT
Southwest · WN 5 / WN 120
4h 50m1 stop
1h 35m in DAL
One ticket
81%arrive on time92% 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.
BNA → SAT
Nashville to San Antonio: 953 nonstop flights a year
On time (12 months)
80%
Cancelled
0.6%
avg delay 12 min
Best time to leave
Before 9 AM
94% on time vs 65% 3 to 6 PM
Most reliable airline
Southwest
80% chance on time
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 Airlines80%
932 flights · 80% on time as flown · 0.6% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM94%
364 flights · avg delay 4 min
- Noon to 3 PM68%
95 flights · avg delay 19 min
- 3 to 6 PM65%
129 flights · avg delay 23 min
- 6 to 9 PM82%
132 flights · avg delay 12 min
- After 9 PM68%
232 flights · avg delay 15 min
Best day: Wednesday (87%). Worst: Thursday (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