Route on-time record

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

Nashville (Nashville International Airport) to Houston (William P. Hobby Airport). 1,797 nonstop flights in Jun 2025 to May 2026, 79% arrived within 15 minutes and 0.7% were cancelled. The most reliable flight number was Southwest 646 at 5:05 AM.

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

BNA → HOU

Nashville to Houston: 1,797 nonstop flights a year

On time (12 months)

79%

Cancelled

0.7%

avg delay 11 min

Best time to leave

Before 9 AM

95% on time vs 66% 6 to 9 PM

Most reliable airline

Southwest

78% chance on time

Check BNA 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 646
5:05 AM → 7:15 AM2h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 1229; its record covers all of them.
96%
chance on time
On time (history)
98%
Cancelled
0.0%
Avg arrival delay
1 min
- Arrived on time 98% of the time (86 flights, Jun 2025 to May 2026).
- Never cancelled in 87 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 66%).
- Departs outside BNA's trouble window (1 PM to 7 PM, when 64% of its 44 ground stops and delay programs started).
Moderate track record · 86 flights
Find Southwest 646 fares Opens this date on Aviasales
#2 · Southwest 142
7:35 AM → 9:50 AM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as Southwest 897; its record covers all of them.
89%
chance on time
On time (history)
89%
Cancelled
0.0%
Avg arrival delay
5 min
- Arrived on time 89% of the time (87 flights, Jun 2025 to May 2026).
- Never cancelled in 87 scheduled flights.
- Leaves in this route's most on-time window (Before 9 AM: 95% on time; 6 to 9 PM: 66%).
- Departs outside BNA's trouble window (1 PM to 7 PM, when 64% of its 44 ground stops and delay programs started).
Moderate track record · 87 flights
Find Southwest 142 fares Opens this date on Aviasales
#3 · Southwest 4215
3:55 PM → 6:20 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
79%
chance on time
On time (history)
85%
Cancelled
0.0%
Avg arrival delay
6 min
- Arrived on time 85% of the time (13 flights, Jun 2025 to May 2026).
- Departs inside BNA's trouble window: 64% of its 44 ground stops and delay programs started between 1 PM and 7 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 4215 fares Opens this date on Aviasales
#4 · Southwest 901
7:20 PM → 9:45 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
75%
chance on time
On time (history)
78%
Cancelled
3.0%
Avg arrival delay
13 min
- Arrived on time 78% of the time (32 flights, Jun 2025 to May 2026).
- Cancelled 3.0% of the time (1 of 33).
- Leaves in this route's least on-time window (6 to 9 PM: 66% on time; Before 9 AM: 95%).
- Departs outside BNA's trouble window (1 PM to 7 PM, when 64% of its 44 ground stops and delay programs started).
Limited track record · 32 flights
Find Southwest 901 fares Opens this date on Aviasales
#5 · Southwest 768
2:15 PM → 4:40 PM2h 25m nonstop
Local times, typical schedule. Last flown 2026-04-06.
74%
chance on time
On time (history)
79%
Cancelled
0.0%
Avg arrival delay
16 min
- Arrived on time 79% of the time (28 flights, Jun 2025 to May 2026).
- Departs inside BNA's trouble window: 64% of its 44 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 (28 flights), so its score leans on the airline's record at this hour.
Limited track record · 28 flights
Find Southwest 768 fares Opens this date on Aviasales
#6 · Southwest 1940
1:25 PM → 3:40 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-30.
73%
chance on time
On time (history)
71%
Cancelled
0.0%
Avg arrival delay
18 min
- Arrived on time 71% of the time (31 flights, Jun 2025 to May 2026).
- Never cancelled in 31 scheduled flights.
- Departs inside BNA's trouble window: 64% of its 44 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 · 31 flights
Find Southwest 1940 fares Opens this date on Aviasales
#7 · Southwest 909
10:25 PM → 12:45 AM2h 20m nonstop
Local times, typical schedule. Last flown 2026-04-06.
72%
chance on time
On time (history)
74%
Cancelled
3.1%
Avg arrival delay
15 min
- Arrived on time 74% of the time (31 flights, Jun 2025 to May 2026).
- Cancelled 3.1% of the time (1 of 32).
- Departs outside BNA's trouble window (1 PM to 7 PM, when 64% of its 44 ground stops and delay programs started).
- 60% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 31 flights
Find Southwest 909 fares Opens this date on Aviasales
#8 · Southwest 3426
8:10 PM → 10:25 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-31.
70%
chance on time
On time (history)
38%
Cancelled
0.0%
Avg arrival delay
33 min
- Arrived on time 38% of the time (8 flights, Jun 2025 to May 2026).
- Leaves in this route's least on-time window (6 to 9 PM: 66% on time; Before 9 AM: 95%).
- Departs outside BNA's trouble window (1 PM to 7 PM, when 64% of its 44 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 3426 fares Opens this date on Aviasales
#9 · Southwest 1345
9:55 PM → 12:05 AM2h 10m nonstop
Local times, typical schedule. Last flown 2026-05-31.
69%
chance on time
On time (history)
60%
Cancelled
0.0%
Avg arrival delay
21 min
- Arrived on time 60% of the time (47 flights, Jun 2025 to May 2026).
- Never cancelled in 47 scheduled flights.
- Departs outside BNA's trouble window (1 PM to 7 PM, when 64% of its 44 ground stops and delay programs started).
- 70% of its delay minutes came from the plane arriving late from an earlier flight.
Limited track record · 47 flights
Find Southwest 1345 fares Opens this date on Aviasales
#10 · Southwest 1146
1:15 PM → 3:30 PM2h 15m nonstop
Local times, typical schedule. Last flown 2026-05-27.
65%
chance on time
On time (history)
44%
Cancelled
0.0%
Avg arrival delay
29 min
- Arrived on time 44% of the time (16 flights, Jun 2025 to May 2026).
- Departs inside BNA's trouble window: 64% of its 44 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 (16 flights), so its score leans on the airline's record at this hour.
Limited track record · 16 flights
Find Southwest 1146 fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

Southwest Airlines78%
1,797 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 AM95%
647 flights · avg delay 2 min
Noon to 3 PM73%
357 flights · avg delay 14 min
3 to 6 PM69%
191 flights · avg delay 15 min
6 to 9 PM66%
375 flights · avg delay 18 min
After 9 PM68%
183 flights · avg delay 15 min

Best day: Wednesday (85%). Worst: Sunday (79%).

Smarter routing

Nearby airports that run more on time

BNA → IAH 81% chance on time
Nashville International Airport to George Bush Intercontinental Airport · 1,421 flights a year · 24 mi from your airports · yours: 78%
Rank flights Fares

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 aircraft48%
Airline (crew, maintenance, boarding)33%
Air traffic control and airport volume17%
Severe weather2%

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

BNA to HOU questions

What time of day is best to fly BNA to HOU?: Before 9 AM: 95% of flights arrived on time, against 66% 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 BNA to HOU?: Southwest, with a season-adjusted 78% chance of operating and arriving on time over 1,797 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 BNA to HOU?: May (68% on time); the best was February (91%), 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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