Skip to content

All Products

Aviation Intelligence

Alerts & Airspace

Free Pilot Tools & Widgets

RC Aviation

Games & Learning

Weather Research & More

Pilot Resources

My Airports

Your shortcuts, saved on this device. Search to add an airport.

No airports saved yet. Add the fields you visit most.

Ask ATIS

Route on-time record

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

Charlotte (Charlotte Douglas International Airport) to Houston (George Bush Intercontinental Airport). 2,362 nonstop flights in Jun 2025 to May 2026, 77% arrived within 15 minutes and 2.0% were cancelled. The most reliable flight number was United 575 at 6:45 AM.

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

CLT → IAH

Charlotte to Houston: 2,362 nonstop flights a year

On time (12 months)

77%

Cancelled

2.0%

avg delay 19 min

Best time to leave

Before 9 AM

89% on time vs 64% 3 to 6 PM

Most reliable airline

United

82% chance on time

Check CLT to IAH 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 575

    6:45 AM → 8:40 AM2h 55m nonstop

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

    88%

    chance on time

    On time (history)
    89%
    Cancelled
    1.9%
    Avg arrival delay
    11 min
    • Arrived on time 89% of the time (357 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 89% on time; 3 to 6 PM: 64%).
    • Departs outside CLT's trouble window (2 PM to 8 PM, when 63% of its 48 ground stops and delay programs started).

    Strong track record · 357 flights

    Find United 575 fares Opens this date on Aviasales

  2. #2 · American 2134

    7:22 AM → 9:13 AM2h 51m nonstop

    Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as American 2445; its record covers all of them.

    87%

    chance on time

    On time (history)
    89%
    Cancelled
    1.3%
    Avg arrival delay
    11 min
    • Arrived on time 89% of the time (296 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 89% on time; 3 to 6 PM: 64%).
    • Departs outside CLT's trouble window (2 PM to 8 PM, when 63% of its 48 ground stops and delay programs started).

    Strong track record · 296 flights

    Find American 2134 fares Opens this date on Aviasales

  3. #3 · American 1930

    7:40 AM → 9:26 AM2h 46m nonstop

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

    83%

    chance on time

    On time (history)
    82%
    Cancelled
    0.0%
    Avg arrival delay
    10 min
    • Arrived on time 82% of the time (11 flights, Jun 2025 to May 2026).
    • Leaves in this route's most on-time window (Before 9 AM: 89% on time; 3 to 6 PM: 64%).
    • Departs outside CLT's trouble window (2 PM to 8 PM, when 63% of its 48 ground stops and delay programs started).
    • Short track record (11 flights), so its score leans on the airline's record at this hour.

    Limited track record · 11 flights

    Find American 1930 fares Opens this date on Aviasales

  4. #4 · American 2148

    12:42 PM → 2:31 PM2h 49m nonstop

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

    83%

    chance on time

    On time (history)
    84%
    Cancelled
    0.0%
    Avg arrival delay
    9 min
    • Arrived on time 84% of the time (44 flights, Jun 2025 to May 2026).
    • Never cancelled in 44 scheduled flights.
    • Departs outside CLT's trouble window (2 PM to 8 PM, when 63% of its 48 ground stops and delay programs started).
    • Lands inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.

    Limited track record · 44 flights

    Find American 2148 fares Opens this date on Aviasales

  5. #5 · American 1478

    12:18 PM → 2:11 PM2h 53m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    83%

    chance on time

    On time (history)
    84%
    Cancelled
    0.0%
    Avg arrival delay
    14 min
    • Arrived on time 84% of the time (226 flights, Jun 2025 to May 2026).
    • Never cancelled in 228 scheduled flights.
    • Departs outside CLT's trouble window (2 PM to 8 PM, when 63% of its 48 ground stops and delay programs started).
    • Lands inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.

    Strong track record · 226 flights

    Find American 1478 fares Opens this date on Aviasales

  6. #6 · American 2765

    9:19 AM → 11:16 AM2h 57m nonstop

    Local times, typical schedule. Last flown 2026-04-06.

    82%

    chance on time

    On time (history)
    88%
    Cancelled
    0.0%
    Avg arrival delay
    10 min
    • Arrived on time 88% of the time (48 flights, Jun 2025 to May 2026).
    • Never cancelled in 48 scheduled flights.
    • Departs outside CLT's trouble window (2 PM to 8 PM, when 63% of its 48 ground stops and delay programs started).
    • Short track record (48 flights), so its score leans on the airline's record at this hour.

    Limited track record · 48 flights

    Find American 2765 fares Opens this date on Aviasales

  7. #7 · American 1919

    12:30 PM → 2:12 PM2h 42m nonstop

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

    78%

    chance on time

    On time (history)
    64%
    Cancelled
    0.0%
    Avg arrival delay
    39 min
    • Arrived on time 64% of the time (11 flights, Jun 2025 to May 2026).
    • Departs outside CLT's trouble window (2 PM to 8 PM, when 63% of its 48 ground stops and delay programs started).
    • Lands inside IAH's trouble window: 60% of its 92 ground stops and delay programs started between noon and 6 PM.
    • Short track record (11 flights), so its score leans on the airline's record at this hour.

    Limited track record · 11 flights

    Find American 1919 fares Opens this date on Aviasales

  8. #8 · SkyWest 4734 · sold as United Express, Delta Connection, American Eagle or Alaska

    4:40 PM → 6:54 PM3h 14m nonstop

    Local times, typical schedule. Last flown 2026-03-28.

    77%

    chance on time

    On time (history)
    85%
    Cancelled
    2.4%
    Avg arrival delay
    10 min
    • Arrived on time 85% of the time (41 flights, Jun 2025 to May 2026).
    • Leaves in this route's least on-time window (3 to 6 PM: 64% on time; Before 9 AM: 89%).
    • Departs inside CLT's trouble window: 63% of its 48 ground stops and delay programs started between 2 PM and 8 PM.
    • Short track record (41 flights), so its score leans on the airline's record at this hour.

    Limited track record · 41 flights

    Find 4:40 PM flight fares Opens this date on Aviasales

  9. #9 · Frontier 2395

    8:17 PM → 10:18 PM3h 01m nonstop

    Local times, typical schedule. Last flown 2026-05-17.

    77%

    chance on time

    On time (history)
    91%
    Cancelled
    0.0%
    Avg arrival delay
    4 min
    • Arrived on time 91% of the time (11 flights, Jun 2025 to May 2026).
    • Departs outside CLT's trouble window (2 PM to 8 PM, when 63% of its 48 ground stops and delay programs started).
    • Short track record (11 flights), so its score leans on the airline's record at this hour.

    Limited track record · 11 flights

    Find Frontier 2395 fares Opens this date on Aviasales

  10. #10 · SkyWest 4690 · sold as United Express, Delta Connection, American Eagle or Alaska

    4:46 PM → 6:57 PM3h 11m nonstop

    Local times, typical schedule. Last flown 2026-05-20. Same departure also flew as SkyWest 5618; its record covers all of them.

    74%

    chance on time

    On time (history)
    73%
    Cancelled
    0.0%
    Avg arrival delay
    14 min
    • Arrived on time 73% of the time (41 flights, Jun 2025 to May 2026).
    • Never cancelled in 41 scheduled flights.
    • Leaves in this route's least on-time window (3 to 6 PM: 64% on time; Before 9 AM: 89%).
    • Departs inside CLT's trouble window: 63% of its 48 ground stops and delay programs started between 2 PM and 8 PM.

    Limited track record · 41 flights

    Find 4:46 PM flight fares Opens this date on Aviasales

Airlines on this route

Season-adjusted chance of operating and arriving on time.

  • United Airlines82%

    420 flights · 83% on time as flown · 1.8% cancel

  • American Airlines74%

    1,629 flights · 76% on time as flown · 1.8% cancel

  • SkyWest Airlines (sold as United Express, Delta Connection, American Eagle or Alaska)73%

    115 flights · 75% on time as flown · 1.9% cancel

  • Frontier Airlines72%

    197 flights · 75% on time as flown · 3.5% cancel

On time by departure time

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

  • Before 9 AM89%

    739 flights · avg delay 11 min

  • 9 AM to noon81%

    275 flights · avg delay 15 min

  • Noon to 3 PM84%

    279 flights · avg delay 12 min

  • 3 to 6 PM64%

    468 flights · avg delay 29 min

  • 6 to 9 PM68%

    405 flights · avg delay 26 min

  • After 9 PM65%

    196 flights · avg delay 26 min

Best day: Tuesday (80%). Worst: Friday (70%).

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
79
F
85
M
78
A
76
M
65
J
64
J
58
A
71
S
84
O
79
N
84
D
79

What delays this route

  • Late-arriving aircraft41%
  • Airline (crew, maintenance, boarding)29%
  • Air traffic control and airport volume22%
  • Severe weather8%

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

CLT to IAH questions

What time of day is best to fly CLT to IAH?
Before 9 AM: 89% of flights arrived on time, against 64% for departures 3 to 6 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 CLT to IAH?
United, with a season-adjusted 82% chance of operating and arriving on time over 420 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 CLT to IAH?
July (58% on time); the best was February (85%), 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 CLT

Live status: FAA delays and ground stops