IAH to MEM flight delays & on-time performance
Nonstop flights from George Bush Intercontinental Airport to Frederick W. Smith International Airport · 468 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at IAH or MEM 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 Memphis (MEM) arrived on time 80% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 1.1% were cancelled, and 6% arrived an hour or more late.
- SkyWest Airlines was the most punctual airline here (84% on time); United Airlines was the least (72%).
- Departures scheduled around 12pm did best (86% on time); around 8pm did worst (72%).
- Wednesday was the most reliable day to fly (90% on time) and Friday the least (71%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (45%).
Which airline is most on time from IAH to MEM?
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. | 84% | 1.0% | 12 min | 6.4% | 721 |
| United Airlines | 72% | 1.4% | 14 min | 5.8% | 367 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am85%343 flights
- 11am78%82 flights
- 12pm86%228 flights
- 4pm73%56 flights
- 6pm71%14 flights
- 7pm86%43 flights
- 8pm72%302 flights
- 9pm46%14 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday75%2.5% cancelled
- Tuesday79%1.3% cancelled
- Wednesday90%0.6% cancelled
- Thursday87%0.0% cancelled
- Friday71%0.0% cancelled
- Saturday76%1.3% cancelled
- Sunday78%1.9% 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)45%
- Late-arriving aircraft33%
- Air traffic control & airport congestion12%
- Extreme weather9%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather92%
- Airline (crew, maintenance, cleaning, fueling)8%
- Air traffic control & airport congestion0%
- Security0%
IAH to MEM: common questions
- How often are IAH to MEM 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 Memphis cancelled?
- 1.1% of scheduled flights were cancelled (12 of 1,088).
- How long are typical delays?
- Across all flights the average arrival delay was 13 min (early arrivals count as zero). Flights that were late arrived 58 min behind schedule on average, and 6.2% of flights were an hour or more late.
- How long is taxi time at IAH?
- Flights on this route spent 24 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MEM to IAH — 80% 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 → MEM, nonstop flights by US airlines that report to the DOT. How we calculate this.