IAH to AUS flight delays & on-time performance
Nonstop flights from George Bush Intercontinental Airport to Austin Bergstrom International Airport · 140 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at IAH or AUS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Houston (IAH) to Austin (AUS) arrived on time 80% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.7% were cancelled, and 7% arrived an hour or more late.
- Departures scheduled around 7am did best (91% on time); around 4pm did worst (67%).
- Tuesday was the most reliable day to fly (85% on time) and Sunday the least (73%).
- The largest source of delay minutes was late-arriving aircraft (38%).
Which airline is most on time from IAH to AUS?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 87% | 0.0% | 10 min | 7.7% | 39 |
| United Airlines | 80% | 0.8% | 14 min | 6.8% | 2,657 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am91%350 flights
- 9am93%40 flights
- 10am83%286 flights
- 11am84%68 flights
- 12pm81%283 flights
- 2pm83%277 flights
- 4pm67%338 flights
- 6pm77%352 flights
- 8pm74%346 flights
- 9pm83%162 flights
- 10pm79%150 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday79%1.0% cancelled
- Tuesday85%0.8% cancelled
- Wednesday83%0.3% cancelled
- Thursday79%0.0% cancelled
- Friday80%0.7% cancelled
- Saturday78%1.8% cancelled
- Sunday73%0.8% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft38%
- Airline (crew, maintenance, cleaning, fueling)32%
- Air traffic control & airport congestion25%
- Extreme weather6%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather50%
- Airline (crew, maintenance, cleaning, fueling)25%
- Air traffic control & airport congestion25%
- Security0%
IAH to AUS: common questions
- How often are IAH to AUS flights on time?
- 80% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Houston to Austin cancelled?
- 0.7% of scheduled flights were cancelled (20 of 2,696).
- How long are typical delays?
- Across all flights the average arrival delay was 14 min (early arrivals count as zero). Flights that were late arrived 63 min behind schedule on average, and 6.8% of flights were an hour or more late.
- How long is taxi time at IAH?
- Flights on this route spent 23 min taxiing from the gate to takeoff on average.
Related routes
Return trip: AUS to IAH — 76% on time
More flights from Houston
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: IAH → AUS, nonstop flights by US airlines that report to the DOT. How we calculate this.