PIT to IAH flight delays & on-time performance
Nonstop flights from Pittsburgh International Airport to George Bush Intercontinental Airport · 1,117 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at PIT or IAH right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Pittsburgh (PIT) to Houston (IAH) arrived on time 85% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.1% were cancelled, and 5% arrived an hour or more late.
- Departures scheduled around 12pm did best (98% on time); around 5pm did worst (59%).
- Thursday was the most reliable day to fly (88% on time) and Sunday the least (79%).
- The largest source of delay minutes was air traffic control & airport congestion (45%).
Which airline is most on time from PIT to IAH?
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. | 100% | 0.0% | 0 min | 0.0% | 4 |
| United Airlines | 85% | 0.1% | 11 min | 5.3% | 770 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am94%325 flights
- 12pm98%59 flights
- 1pm91%65 flights
- 4pm77%220 flights
- 5pm59%88 flights
- 6pm71%17 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday87%0.0% cancelled
- Tuesday85%0.0% cancelled
- Wednesday86%0.0% cancelled
- Thursday88%0.0% cancelled
- Friday81%0.0% cancelled
- Saturday86%0.0% cancelled
- Sunday79%1.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Air traffic control & airport congestion45%
- Airline (crew, maintenance, cleaning, fueling)27%
- Late-arriving aircraft22%
- Extreme weather5%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Air traffic control & airport congestion0%
- Security0%
PIT to IAH: common questions
- How often are PIT to IAH flights on time?
- 85% 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 Pittsburgh to Houston cancelled?
- 0.1% of scheduled flights were cancelled (1 of 774).
- How long are typical delays?
- Across all flights the average arrival delay was 11 min (early arrivals count as zero). Flights that were late arrived 63 min behind schedule on average, and 5.3% of flights were an hour or more late.
- How long is taxi time at PIT?
- Flights on this route spent 15 min taxiing from the gate to takeoff on average.
Related routes
Return trip: IAH to PIT — 82% on time
More flights from Pittsburgh
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: PIT → IAH, nonstop flights by US airlines that report to the DOT. How we calculate this.