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 → ATL
Houston to Atlanta: 2,953 nonstop flights a year
On time (12 months)
79%
Cancelled
1.4%
avg delay 15 min
Best time to leave
Before 9 AM
91% on time vs 67% 6 to 9 PM
Most reliable airline
Delta
82% 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 · Delta 2557
6:00 AM → 9:00 AM2h 00m nonstop
Local times, typical schedule. Last flown 2026-05-31.
89%
chance on time
- On time (history)
- 90%
- Cancelled
- 1.9%
- Avg arrival delay
- 7 min
- Arrived on time 90% of the time (354 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: 67%).
- Departs outside HOU's trouble window (noon to 6 PM, when 80% of its 40 ground stops and delay programs started).
Strong track record · 354 flights
Find Delta 2557 fares Opens this date on Aviasales#2 · Delta 1509
11:33 AM → 2:32 PM1h 59m nonstop
Local times, typical schedule. Last flown 2026-05-31.
85%
chance on time
- On time (history)
- 88%
- Cancelled
- 3.0%
- Avg arrival delay
- 8 min
- Arrived on time 88% of the time (354 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (11 of 365).
- Departs outside HOU's trouble window (noon to 6 PM, when 80% of its 40 ground stops and delay programs started).
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 354 flights
Find Delta 1509 fares Opens this date on Aviasales#3 · Southwest 899
10:15 AM → 1:10 PM1h 55m nonstop
Local times, typical schedule. Last flown 2026-04-06. Same departure also flew as Southwest 645; its record covers all of them.
81%
chance on time
- On time (history)
- 78%
- Cancelled
- 3.0%
- Avg arrival delay
- 9 min
- Arrived on time 78% of the time (32 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- Departs outside HOU's trouble window (noon to 6 PM, when 80% of its 40 ground stops and delay programs started).
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 32 flights
Find Southwest 899 fares Opens this date on Aviasales#4 · Southwest 2288
10:35 AM → 1:35 PM2h 00m nonstop
Local times, typical schedule. Last flown 2026-05-30.
80%
chance on time
- On time (history)
- 77%
- Cancelled
- 0.0%
- Avg arrival delay
- 15 min
- Arrived on time 77% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Departs outside HOU's trouble window (noon to 6 PM, when 80% of its 40 ground stops and delay programs started).
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 31 flights
Find Southwest 2288 fares Opens this date on Aviasales#5 · Southwest 853
12:50 PM → 3:50 PM2h 00m nonstop
Local times, typical schedule. Last flown 2026-05-31.
79%
chance on time
- On time (history)
- 85%
- Cancelled
- 0.0%
- Avg arrival delay
- 10 min
- Arrived on time 85% of the time (46 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- Departs inside HOU's trouble window: 80% of its 40 ground stops and delay programs started between noon and 6 PM.
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 46 flights
Find Southwest 853 fares Opens this date on Aviasales#6 · Delta 1195
2:13 PM → 5:15 PM2h 02m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 79%
- Cancelled
- 0.8%
- Avg arrival delay
- 21 min
- Arrived on time 79% of the time (262 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 ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Strong track record · 262 flights
Find Delta 1195 fares Opens this date on Aviasales#7 · Delta 2381
5:22 PM → 8:30 PM2h 08m nonstop
Local times, typical schedule. Last flown 2026-05-31.
78%
chance on time
- On time (history)
- 76%
- Cancelled
- 1.0%
- Avg arrival delay
- 29 min
- Arrived on time 76% of the time (202 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.
Strong track record · 202 flights
Find Delta 2381 fares Opens this date on Aviasales#8 · Southwest 1730
11:00 AM → 2:00 PM2h 00m nonstop
Local times, typical schedule. Last flown 2026-05-31.
77%
chance on time
- On time (history)
- 72%
- Cancelled
- 0.0%
- Avg arrival delay
- 12 min
- Arrived on time 72% of the time (32 flights, Jun 2025 to May 2026).
- Never cancelled in 32 scheduled flights.
- Departs outside HOU's trouble window (noon to 6 PM, when 80% of its 40 ground stops and delay programs started).
- Lands inside ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
Limited track record · 32 flights
Find Southwest 1730 fares Opens this date on Aviasales#9 · Southwest 362
7:00 PM → 10:00 PM2h 00m nonstop
Local times, typical schedule. Last flown 2026-05-31.
69%
chance on time
- On time (history)
- 74%
- Cancelled
- 0.0%
- Avg arrival delay
- 11 min
- Arrived on time 74% of the time (23 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 67% on time; Before 9 AM: 91%).
- Departs outside HOU's trouble window (noon to 6 PM, when 80% of its 40 ground stops and delay programs started).
- Short track record (23 flights), so its score leans on the airline's record at this hour.
Limited track record · 23 flights
Find Southwest 362 fares Opens this date on Aviasales#10 · Southwest 1640
2:50 PM → 5:45 PM1h 55m nonstop
Local times, typical schedule. Last flown 2026-04-06.
67%
chance on time
- On time (history)
- 57%
- Cancelled
- 0.0%
- Avg arrival delay
- 21 min
- Arrived on time 57% of the time (28 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 ATL's trouble window: 59% of its 96 ground stops and delay programs started between 1 PM and 7 PM.
- Short track record (28 flights), so its score leans on the airline's record at this hour.
Limited track record · 28 flights
Find Southwest 1640 fares Opens this date on Aviasales
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Delta Air Lines82%
1,436 flights · 84% on time as flown · 2.0% cancel
- Southwest Airlines75%
1,517 flights · 75% on time as flown · 0.8% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM91%
574 flights · avg delay 6 min
- 9 AM to noon86%
714 flights · avg delay 8 min
- Noon to 3 PM78%
588 flights · avg delay 17 min
- 3 to 6 PM73%
514 flights · avg delay 22 min
- 6 to 9 PM67%
562 flights · avg delay 25 min
Best day: Tuesday (85%). Worst: Sunday (79%).
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