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Route on-time record

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

Houston (George Bush Intercontinental Airport) to Nashville (Nashville International Airport). 1,421 nonstop flights in Jun 2025 to May 2026, 72% arrived within 15 minutes and 1.2% were cancelled. The most reliable flight number was United 2174 at 7:25 AM.

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IAH → BNA

Houston to Nashville: 1,421 nonstop flights a year

On time (12 months)

72%

Cancelled

1.2%

avg delay 20 min

Best time to leave

Before 9 AM

87% on time vs 66% 6 to 9 PM

Most reliable airline

United

73% chance on time

Check IAH to BNA 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. #1 · United 2174

    7:25 AM → 9:26 AM2h 01m nonstop

    Local times, typical schedule. Last flown 2026-05-31.

    86%

    chance on time

    On time (history)
    87%
    Cancelled
    0.4%
    Avg arrival delay
    6 min
    • Arrived on time 87% of the time (259 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 87% on time; 6 to 9 PM: 66%).
    • Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).

    Strong track record · 259 flights

    Find United 2174 fares Opens this date on Aviasales

  2. #2 · United 1318

    1:15 PM → 3:19 PM2h 04m nonstop

    Local times, typical schedule. Last flown 2026-05-29.

    78%

    chance on time

    On time (history)
    79%
    Cancelled
    0.0%
    Avg arrival delay
    27 min
    • Arrived on time 79% of the time (29 flights, Jun 2025 to May 2026).
    • Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
    • Lands inside BNA's trouble window: 64% of its 44 ground stops and delay programs started between 1 PM and 7 PM.
    • 60% of its delay minutes came from the plane arriving late from an earlier flight.

    Limited track record · 29 flights

    Find United 1318 fares Opens this date on Aviasales

  3. #3 · United 1540

    2:45 PM → 4:49 PM2h 02m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    73%

    chance on time

    On time (history)
    75%
    Cancelled
    0.0%
    Avg arrival delay
    20 min
    • Arrived on time 75% of the time (53 flights, Jun 2025 to May 2026).
    • Never cancelled in 53 scheduled flights.
    • Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
    • Lands inside BNA's trouble window: 64% of its 44 ground stops and delay programs started between 1 PM and 7 PM.

    Limited track record · 53 flights

    Find United 1540 fares Opens this date on Aviasales

  4. #4 · United 2165

    4:20 PM → 6:27 PM2h 07m nonstop

    Local times, typical schedule. Last flown 2026-05-31. Same departure also flew as United 1478; its record covers all of them.

    68%

    chance on time

    On time (history)
    64%
    Cancelled
    0.0%
    Avg arrival delay
    28 min
    • Arrived on time 64% of the time (87 flights, Jun 2025 to May 2026).
    • Never cancelled in 88 scheduled flights.
    • Departs inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
    • Lands inside BNA's trouble window: 64% of its 44 ground stops and delay programs started between 1 PM and 7 PM.

    Moderate track record · 87 flights

    Find United 2165 fares Opens this date on Aviasales

  5. #5 · SkyWest 4785 · sold as United Express, Delta Connection, American Eagle or Alaska

    6:15 PM → 8:26 PM2h 11m nonstop

    Local times, typical schedule. Last flown 2026-05-20.

    67%

    chance on time

    On time (history)
    70%
    Cancelled
    1.3%
    Avg arrival delay
    22 min
    • Arrived on time 70% of the time (312 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: 87%).
    • Departs outside IAH's trouble window (noon to 6 PM, when 60% of its 92 ground stops and delay programs started).

    Strong track record · 312 flights

    Find 6:15 PM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines73%

    994 flights · 74% on time as flown · 0.7% cancel

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)68%

    396 flights · 68% on time as flown · 1.2% cancel

On time by departure time

All airlines, scheduled local departure, Jun 2025 to May 2026.

  • Before 9 AM87%

    271 flights · avg delay 6 min

  • 9 AM to noon77%

    100 flights · avg delay 14 min

  • Noon to 3 PM72%

    290 flights · avg delay 22 min

  • 3 to 6 PM66%

    166 flights · avg delay 26 min

  • 6 to 9 PM66%

    561 flights · avg delay 26 min

Best day: Saturday (80%). Worst: Friday (76%).

Smarter routing

Nearby airports that run more on time

  • HOU → BNA 78% chance on time

    William P. Hobby Airport to Nashville International Airport · 1,804 flights a year · 24 mi from your airports · yours: 71%

    Rank flightsFares

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.

J
81
F
88
M
78
A
76
M
69
J
68
J
67
A
78
S
84
O
83
N
85
D
79

What delays this route

  • Late-arriving aircraft34%
  • Airline (crew, maintenance, boarding)32%
  • Air traffic control and airport volume23%
  • Severe weather11%

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

Finding the most reliable connections from IAH to BNA…

IAH to BNA questions

What time of day is best to fly IAH to BNA?
Before 9 AM: 87% 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 IAH to BNA?
United, with a season-adjusted 73% chance of operating and arriving on time over 994 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 IAH to BNA?
July (67% on time); the best was February (88%), 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 IAH

Live status: FAA delays and ground stops