DFW to IAH flight delays & on-time performance
Nonstop flights from Dallas Fort Worth International Airport to George Bush Intercontinental Airport · 224 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at DFW or IAH right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Dallas/Fort Worth (DFW) to Houston (IAH) arrived on time 69% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2.6% were cancelled, and 12% arrived an hour or more late.
- United Airlines was the most punctual airline here (77% on time); American Airlines was the least (59%).
- Departures scheduled around 5am did best (95% on time); around 9pm did worst (52%).
- Tuesday was the most reliable day to fly (75% on time) and Sunday the least (64%).
- The largest source of delay minutes was late-arriving aircraft (44%).
Which airline is most on time from DFW 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 |
|---|---|---|---|---|---|
| United Airlines | 77% | 1.7% | 20 min | 8.0% | 2,453 |
| Envoy AirRegional airline operating American Eagle flights. | 77% | 2.3% | 14 min | 6.1% | 772 |
| SkyWest AirlinesRegional airline operating flights for United Express, Delta Connection, American Eagle and Alaska. | 76% | 5.3% | 22 min | 12.5% | 76 |
| PSA AirlinesRegional airline operating American Eagle flights. | 75% | 0.0% | 31 min | 25.0% | 8 |
| American Airlines | 59% | 3.5% | 35 min | 18.1% | 2,496 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am95%342 flights
- 7am72%683 flights
- 8am71%274 flights
- 9am77%436 flights
- 10am77%290 flights
- 11am69%159 flights
- 12pm75%485 flights
- 2pm75%562 flights
- 3pm69%382 flights
- 4pm53%384 flights
- 5pm57%487 flights
- 6pm54%270 flights
- 7pm72%472 flights
- 8pm62%72 flights
- 9pm52%288 flights
- 10pm57%194 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday68%2.5% cancelled
- Tuesday75%1.6% cancelled
- Wednesday73%1.0% cancelled
- Thursday71%2.1% cancelled
- Friday68%2.6% cancelled
- Saturday66%5.3% cancelled
- Sunday64%3.5% 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 aircraft44%
- Airline (crew, maintenance, cleaning, fueling)27%
- Air traffic control & airport congestion23%
- Extreme weather7%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather74%
- Air traffic control & airport congestion13%
- Airline (crew, maintenance, cleaning, fueling)13%
- Security0%
DFW to IAH: common questions
- How often are DFW to IAH flights on time?
- 69% 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 Dallas/Fort Worth to Houston cancelled?
- 2.6% of scheduled flights were cancelled (151 of 5,805).
- How long are typical delays?
- Across all flights the average arrival delay was 26 min (early arrivals count as zero). Flights that were late arrived 79 min behind schedule on average, and 12.1% of flights were an hour or more late.
- How long is taxi time at DFW?
- Flights on this route spent 21 min taxiing from the gate to takeoff on average.
Related routes
Return trip: IAH to DFW — 75% on time
More flights from Dallas/Fort Worth
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: DFW → IAH, nonstop flights by US airlines that report to the DOT. How we calculate this.