ATIS Alerts Smart Flight Search
Find the flight least likely to be delayed
BetaWe rank real flight numbers by how often they flew and arrived on time over the last 12 months, adjusted for your travel month and departure time, then check nearby airports and calmer connections. US airlines and airports.
HOU → DAL
Houston to Dallas: 4,075 nonstop flights a year
On time (12 months)
81%
Cancelled
2.2%
avg delay 11 min
Best time to leave
Before 9 AM
94% on time vs 69% after 9 PM
Most reliable airline
Southwest
80% chance on time
Lowest nonstop fare seen in the next two months: $152 (Southwest 1636 on 2026-10-24). 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 10
8:30 AM → 9:40 AM1h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31.
94%
chance on time
- On time (history)
- 99%
- Cancelled
- 2.1%
- Avg arrival delay
- 1 min
- Arrived on time 99% of the time (94 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 94% on time; After 9 PM: 69%).
- Departs outside HOU's trouble window (noon to 6 PM, when 80% of its 40 ground stops and delay programs started).
Moderate track record · 94 flights
Find Southwest 10 fares Opens this date on Aviasales#2 · Southwest 1636
6:00 AM → 7:05 AM1h 05m nonstop
Local times, typical schedule. Last flown 2026-05-31.
92%
chance on time
- On time (history)
- 94%
- Cancelled
- 1.0%
- Avg arrival delay
- 3 min
- Arrived on time 94% of the time (290 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 94% on time; After 9 PM: 69%).
- Departs outside HOU's trouble window (noon to 6 PM, when 80% of its 40 ground stops and delay programs started).
Strong track record · 290 flights
Find Southwest 1636 fares Opens this date on Aviasales#3 · Southwest 4
7:00 AM → 8:10 AM1h 10m nonstop
Local times, typical schedule. Last flown 2026-05-30.
92%
chance on time
- On time (history)
- 94%
- Cancelled
- 1.4%
- Avg arrival delay
- 3 min
- Arrived on time 94% of the time (204 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 94% on time; After 9 PM: 69%).
- Departs outside HOU's trouble window (noon to 6 PM, when 80% of its 40 ground stops and delay programs started).
Strong track record · 204 flights
Find Southwest 4 fares Opens this date on Aviasales#4 · Southwest 6
7:30 AM → 8:35 AM1h 05m nonstop
Local times, typical schedule. Last flown 2026-04-01.
92%
chance on time
- On time (history)
- 96%
- Cancelled
- 2.1%
- Avg arrival delay
- 2 min
- Arrived on time 96% of the time (93 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 94% on time; After 9 PM: 69%).
- Departs outside HOU's trouble window (noon to 6 PM, when 80% of its 40 ground stops and delay programs started).
Moderate track record · 93 flights
Find Southwest 6 fares Opens this date on Aviasales#5 · Southwest 14
9:30 AM → 10:40 AM1h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 91%
- Cancelled
- 1.7%
- Avg arrival delay
- 6 min
- Arrived on time 91% of the time (116 flights, Jun 2025 to May 2026).
- Departs outside HOU's trouble window (noon to 6 PM, when 80% of its 40 ground stops and delay programs started).
- Lands inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
Moderate track record · 116 flights
Find Southwest 14 fares Opens this date on Aviasales#6 · Southwest 12
9:00 AM → 10:15 AM1h 15m nonstop
Local times, typical schedule. Last flown 2026-04-05.
89%
chance on time
- On time (history)
- 92%
- Cancelled
- 1.1%
- Avg arrival delay
- 4 min
- Arrived on time 92% of the time (91 flights, Jun 2025 to May 2026).
- Departs outside HOU's trouble window (noon to 6 PM, when 80% of its 40 ground stops and delay programs started).
- Lands inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
Moderate track record · 91 flights
Find Southwest 12 fares Opens this date on Aviasales#7 · Southwest 8
8:00 AM → 9:15 AM1h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
87%
chance on time
- On time (history)
- 88%
- Cancelled
- 2.9%
- Avg arrival delay
- 8 min
- Arrived on time 88% of the time (169 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 94% on time; After 9 PM: 69%).
- Departs outside HOU's trouble window (noon to 6 PM, when 80% of its 40 ground stops and delay programs started).
Moderate track record · 169 flights
Find Southwest 8 fares Opens this date on Aviasales#8 · Southwest 16
10:00 AM → 11:05 AM1h 05m nonstop
Local times, typical schedule. Last flown 2026-04-01.
86%
chance on time
- On time (history)
- 90%
- Cancelled
- 4.4%
- Avg arrival delay
- 4 min
- Arrived on time 90% of the time (174 flights, Jun 2025 to May 2026).
- Cancelled 4.4% of the time (8 of 182).
- Departs outside HOU's trouble window (noon to 6 PM, when 80% of its 40 ground stops and delay programs started).
- Lands inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
Moderate track record · 174 flights
Find Southwest 16 fares Opens this date on Aviasales#9 · Southwest 18
10:50 AM → 12:00 PM1h 10m nonstop
Local times, typical schedule. Last flown 2026-05-30.
86%
chance on time
- On time (history)
- 87%
- Cancelled
- 2.2%
- Avg arrival delay
- 12 min
- Arrived on time 87% of the time (45 flights, Jun 2025 to May 2026).
- Departs outside HOU's trouble window (noon to 6 PM, when 80% of its 40 ground stops and delay programs started).
- Lands inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
- Short track record (45 flights), so its score leans on the airline's record at this hour.
Limited track record · 45 flights
Find Southwest 18 fares Opens this date on Aviasales#10 · Southwest 26
12:30 PM → 1:40 PM1h 10m nonstop
Local times, typical schedule. Last flown 2026-05-27.
83%
chance on time
- On time (history)
- 88%
- Cancelled
- 2.8%
- Avg arrival delay
- 8 min
- Arrived on time 88% of the time (104 flights, Jun 2025 to May 2026).
- Departs inside HOU's trouble window: 80% of its 40 ground stops and delay programs started between noon and 6 PM.
- Lands inside DAL's trouble window: 67% of its 42 ground stops and delay programs started between 10 AM and 4 PM.
Moderate track record · 104 flights
Find Southwest 26 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines80%
4,075 flights · 81% on time as flown · 2.2% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM94%
923 flights · avg delay 4 min
- 9 AM to noon88%
726 flights · avg delay 8 min
- Noon to 3 PM79%
680 flights · avg delay 14 min
- 3 to 6 PM74%
779 flights · avg delay 16 min
- 6 to 9 PM73%
729 flights · avg delay 16 min
- After 9 PM69%
238 flights · avg delay 20 min
Best day: Wednesday (85%). Worst: Sunday (78%).
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