Route on-time record

ATL to HOU: most on-time flights and the best time to fly

Atlanta (Hartsfield Jackson Atlanta International Airport) to Houston (William P. Hobby Airport). 2,953 nonstop flights in Jun 2025 to May 2026, 79% arrived within 15 minutes and 1.3% were cancelled. The most reliable flight number was Southwest 3113 at 6:05 AM.

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

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

Check ATL to HOU fares

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%).

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 aircraft39%
Airline (crew, maintenance, boarding)39%
Air traffic control and airport volume17%
Severe weather4%

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

ATL to HOU questions

What time of day is best to fly ATL to HOU?: Before 9 AM: 91% of flights arrived on time, against 61% for departures 6 to 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 ATL to HOU?: Delta, with a season-adjusted 79% chance of operating and arriving on time over 1,436 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 ATL to HOU?: July (68% on time); the best was February (87%), 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.

More routes from ATL

Live status: FAA delays and ground stops

All Products

Aviation Intelligence

Alerts & Airspace

Free Pilot Tools & Widgets

RC Aviation

Games & Learning

Weather Research & More

Pilot Resources

My Airports

Ask ATIS