Is there a ground stop at IAH today?
No ground stop at IAH right now (as of 3:54 PM CST, Nov 6): the FAA lists no ground stop, ground delay program or delays for George Bush Intercontinental Airport. In the last 12 months the FAA issued 61 ground stops and 22 ground delay programs for IAH, most often for thunderstorms, holding flights on 47 days.
Live FAA delay status for George Bush Intercontinental Airport (KIAH, Houston, TX): ground stops, ground delay programs and delays right now, what the FAA has listed for IAH recently, and how often flights here actually run late.
No: the FAA is not reporting a ground stop at IAH right now.
FAA NAS Status lists no ground stop, ground delay program, or delay event for George Bush Intercontinental. Checked Nov 6, 2026 · 2154Z (3:54 PM CST); this page refreshes about every two minutes.
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Why IAH gets delayed
Houston Intercontinental's five runways handle Gulf Coast weather, which means storms, fog and strong spring winds. The FAA ran 92 programs for IAH in the 12 months to October 2026. Thunderstorms caused half; controller staffing (13%) and wind (11%) most of the rest.
IAH ground stops are typically short, about 1 h 15 min, but its ground delay programs can run long. A May 1, 2026 thunderstorm program lasted 14 h 3 min, and a wind program on March 16 ran 12 h 39 min with average delays above three hours. In the 20-year record IAH averages about 42 fog days a year, most of them from December to February.
Written by the ATIS Alerts team from FAA Command Center advisories (October 2025 to October 2026), BTS airline on-time data (June 2025 to May 2026) and 20 years of hourly weather observations. Updated October 2026.
How long IAH delays usually last
Every FAA ground stop and ground delay program for IAH from Nov 6, 2025 to Nov 5, 2026, rebuilt from the FAA Command Center's own advisories.
Ground delay programs
22Ground stops
61Flights to IAH were held by at least one FAA program on 47 days in the last year. 36% of the stops and programs began between 2 PM and 6 PM local time.
What triggered them
IAH ground stops and delay programs by month
| Month | Ground stops | Delay programs | Total |
|---|---|---|---|
| December 2025 | 3 | 0 | 3 |
| January 2026 | 0 | 0 | 0 |
| February 2026 | 1 | 0 | 1 |
| March 2026 | 10 | 4 | 14 |
| April 2026 | 9 | 4 | 13 |
| May 2026 | 7 | 3 | 10 |
| June 2026 | 12 | 6 | 18 |
| July 2026 | 7 | 2 | 9 |
| August 2026 | 2 | 0 | 2 |
| September 2026 | 2 | 0 | 2 |
| October 2026 | 3 | 0 | 3 |
| November 2026 to dateplus Nov 6-30, 2025 | 5 | 3 | 8 |
The busiest month was June, with 18 ground stops and delay programs combined.
Source: FAA ATCSCC advisory database (fly.faa.gov), every ground stop and ground delay program advisory the FAA Command Center issued for IAH, rebuilt daily by ATIS Alerts.
Best time of day to fly out of IAH
Airline departures scheduled before 9 AM left on time 90% of the time, against 70% for those scheduled 6 to 9 PM. By weekday, Tuesday was the most reliable (83%) and Sunday the least (75%). BTS on-time data, June 2025 to May 2026; on time = within 15 minutes.
Recent FAA events at IAH
Ground stops and delay programs the FAA has listed for IAH in the last 90 days, from ATIS Alerts' own log of FAA NAS Status.
- Departure DelaysNov 4, 2026 · 0325Z (9:25 PM CST)lasted 5 min · wx:thunderstorms · avg delay 75 min
- Departure DelaysNov 3, 2026 · 1850Z (12:50 PM CST)lasted 8h 30m · wx:thunderstorms · avg delay 75 min
- Ground StopNov 3, 2026 · 1807Z (12:07 PM CST)lasted 1h 23m · thunderstorms
- Departure DelaysNov 3, 2026 · 1705Z (11:05 AM CST)lasted 35 min · wx:thunderstorms · avg delay 30 min
- Departure DelaysNov 3, 2026 · 1650Z (10:50 AM CST)lasted 10 min · wx:thunderstorms · avg delay 30 min
- Departure DelaysOct 16, 2026 · 1555Z (10:55 AM CDT)lasted 20 min · wx:wind · avg delay 15 min
- Ground StopOct 13, 2026 · 2225Z (5:25 PM CDT)lasted 2h 35m · ocl
- Departure DelaysOct 2, 2026 · 2225Z (5:25 PM CDT)lasted 1h 5m · wx:thunderstorms · avg delay 30 min
- Ground StopOct 2, 2026 · 2203Z (5:03 PM CDT)lasted 1h 3m · thunderstorms
- Departure DelaysOct 2, 2026 · 0210Z (9:10 PM CDT)lasted 1h 45m · wx:thunderstorms · avg delay 15 min
- Ground StopOct 1, 2026 · 1714Z (12:14 PM CDT)lasted 1h 22m · thunderstorms
- Departure DelaysOct 1, 2026 · 1535Z (10:35 AM CDT)lasted 4h · wx:thunderstorms · avg delay 45 min
- Departure DelaysSep 13, 2026 · 1829Z (1:29 PM CDT)lasted 3h 56m · wx:thunderstorms · avg delay 23 min
- Ground StopSep 10, 2026 · 1852Z (1:52 PM CDT)lasted 30 min · thunderstorms
Durations are the time the FAA kept the event listed. Log complete from 2026-09-22; older rows are the last event of each type seen by the ATIS Alerts bot since 2026-07-22.
How often is IAH delayed?
Airline on-time performance at IAH, Jun 2025 to May 2026, from the US DOT Bureau of Transportation Statistics.
119,184 scheduled airline arrivals and 119,193 departures in the period. Best month: Feb 2026 (88.4% on time); worst: Jun 2025 (69.0%). 34% of arrival delay minutes were charged to weather or the National Airspace System, the categories a ground stop or ground delay program falls under.
On-time arrivals by month
Bar = share of arrivals within 15 minutes of schedule; largest month had 10,496 arrivals.
What caused the delays
- 34%Late-arriving aircraft
- 32%Airline (crew, maintenance, ground handling)
- 28%National Airspace System (ATC, volume, non-extreme weather)
- 5%Extreme weather
- 0%Security
Shares of delay minutes on arrivals 15+ minutes late, as reported by the carriers to the DOT.
Source: Bureau of Transportation Statistics (BTS) Airline On-Time Performance (reporting carriers; regional, cargo, and general aviation flights are not included). Published about two months after each month ends.
Weather at KIAH right now
Weather drives most ground stops: thunderstorms, low ceilings, wind and snow.
METAR KIAH 062053Z 30004KT 10SM SCT040 BKN080 BKN250 28/16 A2999 RMK AO2 SLP156 T02830156 56017
IAH ground stop FAQ
Is there a ground stop at IAH today?
No ground stop at IAH right now (as of 3:54 PM CST, Nov 6): the FAA lists no ground stop, ground delay program or delays for George Bush Intercontinental Airport. This page rechecks the FAA's NAS Status feed about every two minutes.
How do I know if IAH has a ground stop right now?
The banner at the top of this page reads the FAA's NAS Status feed about every two minutes. A red banner means the FAA currently lists a ground stop for George Bush Intercontinental; green means it does not. The official source is nasstatus.faa.gov.
How many ground stops has IAH had in the last year?
In the last 12 months the FAA issued 61 ground stops and 22 ground delay programs for IAH, most often for thunderstorms, holding flights on 47 days. Source: the FAA Command Center's advisory database (fly.faa.gov).
How long do ground stops at IAH last?
In the last 12 months the FAA issued 61 ground stops for IAH. The typical one lasted 1 h 15 min, and the middle half ran 59 min to 1 h 51 min. Ground delay programs run longer: 22 of them, typically 3 h 23 min with an average delay of 61 minutes.
Does a ground stop mean my flight is cancelled?
No. It means departures to IAH are held, not cancelled. Airlines cancel on their own when the backlog cannot be recovered, so watch your carrier's updates alongside this page.
⚠️ Informational only. FAA NAS Status is the authoritative source for delay programs; your airline or dispatch governs your flight. ATIS Alerts is not affiliated with the FAA.