IAH to CHA flight delays & on-time performance
Nonstop flights from George Bush Intercontinental Airport to Chattanooga Metropolitan Airport (Lovell Field) · 686 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at IAH or CHA 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 Chattanooga (CHA) arrived on time 67% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 0% were cancelled, and 18% arrived an hour or more late.
- SkyWest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 7pm did best (69% on time); around 8pm did worst (57%).
- Tuesday was the most reliable day to fly (83% on time) and Monday the least (56%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (53%).
Which airline is most on time from IAH to CHA?
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. | 67% | 0.0% | 40 min | 18.2% | 248 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 12pm67%124 flights
- 7pm69%103 flights
- 8pm57%21 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday56%0.0% cancelled
- Tuesday83%0.0% cancelled
- Wednesday78%0.0% cancelled
- Thursday67%0.0% cancelled
- Friday60%0.0% cancelled
- Saturday68%0.0% cancelled
- Sunday56%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)53%
- Late-arriving aircraft34%
- Extreme weather7%
- Air traffic control & airport congestion6%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
IAH to CHA: common questions
- How often are IAH to CHA flights on time?
- 67% 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 Chattanooga cancelled?
- 0.0% of scheduled flights were cancelled (0 of 248).
- How long are typical delays?
- Across all flights the average arrival delay was 40 min (early arrivals count as zero). Flights that were late arrived 117 min behind schedule on average, and 18.2% of flights were an hour or more late.
- How long is taxi time at IAH?
- Flights on this route spent 22 min taxiing from the gate to takeoff on average.
Related routes
Return trip: CHA to IAH — 64% on time
More flights from Houston
More flights to Chattanooga
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: IAH → CHA, nonstop flights by US airlines that report to the DOT. How we calculate this.