Route on-time record

DAL to SAT: most on-time flights and the best time to fly

Dallas (Dallas Love Field) to San Antonio (San Antonio International Airport). 2,716 nonstop flights in Jun 2025 to May 2026, 79% arrived within 15 minutes and 1.1% were cancelled. The most reliable flight number was Southwest 1669 at 8:05 AM.

Flying on a specific date? We’ll adjust for the month, the weekday and the forecast.

DAL → SAT

Dallas to San Antonio: 2,716 nonstop flights a year

On time (12 months)

79%

Cancelled

1.1%

avg delay 13 min

Best time to leave

Before 9 AM

96% on time vs 58% after 9 PM

Most reliable airline

Southwest

79% chance on time

Check DAL to SAT fares

Lowest nonstop fare seen in the next two months: $255 (Southwest 1230 on 2026-10-29). 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 · Southwest 1669
8:05 AM → 9:15 AM1h 10m nonstop
Local times, typical schedule. Last flown 2026-05-30. Same departure also flew as Southwest 3955; its record covers all of them.
95%
chance on time
On time (history)
98%
Cancelled
0.0%
Avg arrival delay
1 min
- Arrived on time 98% of the time (60 flights, Jun 2025 to May 2026).
- Never cancelled in 60 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 96% on time; After 9 PM: 58%).
- Departs outside DAL's trouble window (10 AM to 4 PM, when 67% of its 42 ground stops and delay programs started).
Moderate track record · 60 flights
Find Southwest 1669 fares Opens this date on Aviasales
#2 · Southwest 1668
7:10 AM → 8:20 AM1h 10m nonstop
Local times, typical schedule. Last flown 2026-05-30.
93%
chance on time
On time (history)
97%
Cancelled
0.0%
Avg arrival delay
1 min
- Arrived on time 97% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 96% on time; After 9 PM: 58%).
- Departs outside DAL's trouble window (10 AM to 4 PM, when 67% of its 42 ground stops and delay programs started).
Limited track record · 31 flights
Find Southwest 1668 fares Opens this date on Aviasales
#3 · Southwest 1689
6:00 AM → 7:10 AM1h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 2417; its record covers all of them.
92%
chance on time
On time (history)
94%
Cancelled
0.0%
Avg arrival delay
2 min
- Arrived on time 94% of the time (50 flights, Jun 2025 to May 2026).
- Never cancelled in 51 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 96% on time; After 9 PM: 58%).
- Departs outside DAL's trouble window (10 AM to 4 PM, when 67% of its 42 ground stops and delay programs started).
Limited track record · 50 flights
Find Southwest 1689 fares Opens this date on Aviasales
#4 · Southwest 1487
8:35 AM → 9:45 AM1h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31.
91%
chance on time
On time (history)
100%
Cancelled
0.0%
Avg arrival delay
1 min
- Arrived on time 100% of the time (8 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 96% on time; After 9 PM: 58%).
- Departs outside DAL's trouble window (10 AM to 4 PM, when 67% of its 42 ground stops and delay programs started).
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 1487 fares Opens this date on Aviasales
#5 · Southwest 4401
7:30 AM → 8:40 AM1h 10m nonstop
Local times, typical schedule. Last flown 2026-04-06.
89%
chance on time
On time (history)
89%
Cancelled
3.6%
Avg arrival delay
7 min
- Arrived on time 89% of the time (27 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 96% on time; After 9 PM: 58%).
- Departs outside DAL's trouble window (10 AM to 4 PM, when 67% of its 42 ground stops and delay programs started).
- Short track record (27 flights), so its score leans on the airline's record at this hour.
Limited track record · 27 flights
Find Southwest 4401 fares Opens this date on Aviasales
#6 · Southwest 120
9:10 AM → 10:25 AM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-27.
87%
chance on time
On time (history)
88%
Cancelled
0.0%
Avg arrival delay
3 min
- Arrived on time 88% of the time (16 flights, Jun 2025 to May 2026).
- Departs outside DAL's trouble window (10 AM to 4 PM, when 67% of its 42 ground stops and delay programs started).
- Short track record (16 flights), so its score leans on the airline's record at this hour.
Limited track record · 16 flights
Find Southwest 120 fares Opens this date on Aviasales
#7 · Southwest 2042
9:25 AM → 10:40 AM1h 15m nonstop
Local times, typical schedule. Last flown 2026-04-06.
86%
chance on time
On time (history)
85%
Cancelled
3.6%
Avg arrival delay
7 min
- Arrived on time 85% of the time (27 flights, Jun 2025 to May 2026).
- Departs outside DAL's trouble window (10 AM to 4 PM, when 67% of its 42 ground stops and delay programs started).
- Short track record (27 flights), so its score leans on the airline's record at this hour.
Limited track record · 27 flights
Find Southwest 2042 fares Opens this date on Aviasales
#8 · Southwest 874
11:00 AM → 12:15 PM1h 15m nonstop
Local times, typical schedule. Last flown 2026-04-06.
83%
chance on time
On time (history)
93%
Cancelled
0.0%
Avg arrival delay
4 min
- Arrived on time 93% of the time (15 flights, Jun 2025 to May 2026).
- Departs inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 874 fares Opens this date on Aviasales
#9 · Southwest 3303
12:30 PM → 1:40 PM1h 10m nonstop
Local times, typical schedule. Last flown 2026-04-01.
83%
chance on time
On time (history)
88%
Cancelled
0.0%
Avg arrival delay
3 min
- Arrived on time 88% of the time (8 flights, Jun 2025 to May 2026).
- Departs inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (8 flights), so its score leans on the airline's record at this hour.
Limited track record · 8 flights
Find Southwest 3303 fares Opens this date on Aviasales
#10 · Southwest 2743
1:20 PM → 2:30 PM1h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 3743, 1743, 2651; its record covers all of them.
81%
chance on time
On time (history)
79%
Cancelled
2.6%
Avg arrival delay
18 min
- Arrived on time 79% of the time (76 flights, Jun 2025 to May 2026).
- Departs inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
- 65% of its delay minutes came from the plane arriving late from an earlier flight.
Moderate track record · 76 flights
Find Southwest 2743 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

Southwest Airlines79%
2,716 flights · 79% on time as flown · 1.1% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

Before 9 AM96%
596 flights · avg delay 2 min
9 AM to noon88%
409 flights · avg delay 7 min
Noon to 3 PM84%
574 flights · avg delay 10 min
3 to 6 PM70%
457 flights · avg delay 19 min
6 to 9 PM63%
519 flights · avg delay 23 min
After 9 PM58%
161 flights · avg delay 27 min

Best day: Tuesday (86%). Worst: Thursday (77%).

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 aircraft60%
Airline (crew, maintenance, boarding)30%
Air traffic control and airport volume8%
Severe weather1%

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

DAL to SAT questions

What time of day is best to fly DAL to SAT?: Before 9 AM: 96% of flights arrived on time, against 58% for departures after 9 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 DAL to SAT?: Southwest, with a season-adjusted 79% chance of operating and arriving on time over 2,716 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 DAL to SAT?: May (69% on time); the best was February (88%), 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.

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