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.
ATL → HOU
Atlanta to Houston: 2,953 nonstop flights a year
On time (12 months)
79%
Cancelled
1.3%
avg delay 13 min
Best time to leave
Before 9 AM
91% on time vs 61% 6 to 9 PM
Most reliable airline
Delta
79% 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 · Southwest 3113
6:05 AM → 7:20 AM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 2711, 1458; its record covers all of them.
90%
chance on time
- On time (history)
- 92%
- Cancelled
- 1.1%
- Avg arrival delay
- 7 min
- Arrived on time 92% of the time (86 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 61%).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Moderate track record · 86 flights
Find Southwest 3113 fares Opens this date on Aviasales#2 · Southwest 1467
12:25 PM → 1:50 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
86%
chance on time
- On time (history)
- 94%
- Cancelled
- 0.0%
- Avg arrival delay
- 7 min
- Arrived on time 94% of the time (33 flights, Jun 2025 to May 2026).
- Never cancelled in 33 scheduled flights.
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
- Lands inside HOU's trouble window: 80% of its 40 ground stops and delay programs started between noon and 6 PM.
Limited track record · 33 flights
Find Southwest 1467 fares Opens this date on Aviasales#3 · Delta 1509
9:09 AM → 10:23 AM2h 12m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 88%
- Cancelled
- 3.3%
- Avg arrival delay
- 7 min
- Arrived on time 88% of the time (352 flights, Jun 2025 to May 2026).
- Cancelled 3.3% of the time (12 of 365).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Strong track record · 352 flights
Find Delta 1509 fares Opens this date on Aviasales#4 · Southwest 239
8:40 AM → 10:00 AM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
83%
chance on time
- On time (history)
- 83%
- Cancelled
- 1.9%
- Avg arrival delay
- 15 min
- Arrived on time 83% of the time (53 flights, Jun 2025 to May 2026).
- Leaves in this route's most on-time window (Before 9 AM: 91% on time; 6 to 9 PM: 61%).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
- Short track record (53 flights), so its score leans on the airline's record at this hour.
Limited track record · 53 flights
Find Southwest 239 fares Opens this date on Aviasales#5 · Delta 1195
12:14 PM → 1:28 PM2h 11m nonstop
Local times, typical schedule. Last flown 2026-05-31.
81%
chance on time
- On time (history)
- 81%
- Cancelled
- 0.8%
- Avg arrival delay
- 13 min
- Arrived on time 81% of the time (262 flights, Jun 2025 to May 2026).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
- Lands inside HOU's trouble window: 80% of its 40 ground stops and delay programs started between noon and 6 PM.
Strong track record · 262 flights
Find Delta 1195 fares Opens this date on Aviasales#6 · Delta 2381
3:22 PM → 4:28 PM2h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31.
80%
chance on time
- On time (history)
- 82%
- Cancelled
- 1.5%
- Avg arrival delay
- 13 min
- Arrived on time 82% of the time (203 flights, Jun 2025 to May 2026).
- Departs inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
- Lands inside HOU's trouble window: 80% of its 40 ground stops and delay programs started between noon and 6 PM.
Strong track record · 203 flights
Find Delta 2381 fares Opens this date on Aviasales#7 · Southwest 4059
2:50 PM → 4:10 PM2h 20m nonstop
Local times, typical schedule. Last flown 2026-04-05.
79%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 19 min
- Arrived on time 85% of the time (13 flights, Jun 2025 to May 2026).
- Departs inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
- Lands inside HOU's trouble window: 80% of its 40 ground stops and delay programs started between noon and 6 PM.
- Short track record (13 flights), so its score leans on the airline's record at this hour.
Limited track record · 13 flights
Find Southwest 4059 fares Opens this date on Aviasales#8 · Southwest 1692
2:05 PM → 3:20 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-29.
75%
chance on time
- On time (history)
- 74%
- Cancelled
- 0.0%
- Avg arrival delay
- 14 min
- Arrived on time 74% of the time (39 flights, Jun 2025 to May 2026).
- Never cancelled in 39 scheduled flights.
- Departs inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
- Lands inside HOU's trouble window: 80% of its 40 ground stops and delay programs started between noon and 6 PM.
Limited track record · 39 flights
Find Southwest 1692 fares Opens this date on Aviasales#9 · Delta 2051
9:31 PM → 10:42 PM2h 11m nonstop
Local times, typical schedule. Last flown 2026-05-31.
72%
chance on time
- On time (history)
- 73%
- Cancelled
- 1.4%
- Avg arrival delay
- 16 min
- Arrived on time 73% of the time (359 flights, Jun 2025 to May 2026).
- Departs outside ATL's trouble window (1 PM to 7 PM, when 59% of its 96 ground stops and delay programs started).
Strong track record · 359 flights
Find Delta 2051 fares Opens this date on Aviasales#10 · Southwest 2231
5:40 PM → 7:00 PM2h 20m nonstop
Local times, typical schedule. Last flown 2026-04-06.
71%
chance on time
- On time (history)
- 67%
- Cancelled
- 0.0%
- Avg arrival delay
- 15 min
- Arrived on time 67% of the time (15 flights, Jun 2025 to May 2026).
- Departs inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
- 53% of its delay minutes came from the plane arriving late from an earlier flight.
- Short track record (15 flights), so its score leans on the airline's record at this hour.
Limited track record · 15 flights
Find Southwest 2231 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines79%
1,436 flights · 80% on time as flown · 1.9% cancel
- Southwest Airlines78%
1,517 flights · 79% on time as flown · 0.7% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM91%
713 flights · avg delay 6 min
- 9 AM to noon86%
434 flights · avg delay 9 min
- Noon to 3 PM82%
566 flights · avg delay 12 min
- 3 to 6 PM75%
460 flights · avg delay 15 min
- 6 to 9 PM61%
412 flights · avg delay 25 min
- After 9 PM73%
368 flights · avg delay 16 min
Best day: Wednesday (83%). 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