What's the busiest hour for departures at IAH?

Departures from Houston Bush Int'ctl peak at 18:00 local time, averaging 71.3 flights per hour over the past 60 days.

What's the quietest hour to fly out of IAH?

The quietest hour with regular service is 00:00 local time, averaging 1 flights per hour.

How long are security wait times at IAH?

Average weekday security wait at Houston Bush Int'ctl is 8 minutes, and weekend wait is 8 minutes. This is a rolling average from public airport wait data.

Which airline operates the most flights from IAH?

United Airlines, (UA) is the largest operator at Houston Bush Int'ctl, with 13482 observed departures in the past 60 days.

What's the most popular destination from IAH?

Dallas-Fort Worth (DFW) is the most-flown destination, with observed departures in the past 60 days.

🇺🇸

IAH Airport - Houston Bush Int'ctl

Houston, United States. Departures peak at 18:00 local, averaging 71.3 flights per hour.

Window: last 60 days. Last refreshed: 2026-05-18. Schedule coverage: 31 days observed.

Peak departure hour

18:00

71.3 flights/hr

Quietest active hour

00:00

1 flights/hr

Avg weekday wait

8 min

Security

Avg weekend wait

8 min

Security

Traffic score

77/100

Relative volume

Departures by hour (local time)

Avg per day, last 60 days

Total: 609.3 avg departures per day.

Weekday vs weekend departure pattern

Weekday avg per hour

Weekend avg per hour

Arrivals by hour (local time)

Avg per day, last 60 days

Peak arrival hour: 08:00 local (74 flights/hr). Total: 587.5 avg arrivals/day.

Top airlines

1. United Airlines, (UA) 13,482
2. American Airlines (AA) 908
3. Delta Air Lines, (DL) 686
4. Frontier Airlines, (F9) 432
5. Spirit Airlines, (NK) 374

Top destinations

1. 🇺🇸 Dallas-Fort Worth (DFW) 504
2. 🇺🇸 Chicago (ORD) 500
3. 🇺🇸 Atlanta (ATL) 448
4. 🇺🇸 Los Angeles (LAX) 411
5. 🇺🇸 Denver (DEN) 347

Frequently asked

What's the busiest hour for departures at IAH?: Departures from Houston Bush Int'ctl peak at 18:00 local time, averaging 71.3 flights per hour over the past 60 days.
What's the quietest hour to fly out of IAH?: The quietest hour with regular service is 00:00 local time, averaging 1 flights per hour.
How long are security wait times at IAH?: Average weekday security wait at Houston Bush Int'ctl is 8 minutes, and weekend wait is 8 minutes. This is a rolling average from public airport wait data.
Which airline operates the most flights from IAH?: United Airlines, (UA) is the largest operator at Houston Bush Int'ctl, with 13482 observed departures in the past 60 days.
What's the most popular destination from IAH?: Dallas-Fort Worth (DFW) is the most-flown destination, with observed departures in the past 60 days.

Tracking a flight through IAH?

Forward your booking and TripWaffle alerts you to gate changes, delays, baggage carousels, and security wait spikes - so you don't have to keep refreshing.

Get realtime alerts Free to start. No card required.

<- All airports · Busiest by hour · Quietest mornings · Methodology