LGA to IAH flight delays & on-time performance
Nonstop flights from LaGuardia Airport to George Bush Intercontinental Airport · 1,416 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at LGA or IAH right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from New York (LGA) to Houston (IAH) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2.8% were cancelled, and 10% arrived an hour or more late.
- Spirit Airlines was the most punctual airline here (78% on time); Delta Air Lines was the least (75%).
- Departures scheduled around 6am did best (91% on time); around 5pm did worst (60%).
- Friday was the most reliable day to fly (80% on time) and Sunday the least (71%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (34%).
Which airline is most on time from LGA 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. | 81% | 3.1% | 9 min | 3.2% | 32 |
| Spirit Airlines | 78% | 4.0% | 15 min | 7.3% | 273 |
| United Airlines | 77% | 1.8% | 19 min | 8.8% | 2,381 |
| Delta Air Lines | 75% | 4.3% | 22 min | 11.9% | 1,345 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am91%514 flights
- 7am90%411 flights
- 8am86%146 flights
- 9am88%252 flights
- 10am75%428 flights
- 11am70%129 flights
- 12pm86%324 flights
- 1pm73%309 flights
- 2pm73%274 flights
- 3pm64%344 flights
- 5pm60%290 flights
- 6pm64%307 flights
- 8pm67%282 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday75%4.5% cancelled
- Tuesday80%3.2% cancelled
- Wednesday76%2.8% cancelled
- Thursday77%1.8% cancelled
- Friday80%1.3% cancelled
- Saturday78%3.1% cancelled
- Sunday71%3.0% 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)34%
- Late-arriving aircraft33%
- Air traffic control & airport congestion25%
- Extreme weather8%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather56%
- Airline (crew, maintenance, cleaning, fueling)28%
- Air traffic control & airport congestion16%
- Security0%
LGA to IAH: common questions
- How often are LGA to IAH flights on time?
- 77% 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 New York to Houston cancelled?
- 2.8% of scheduled flights were cancelled (113 of 4,031).
- How long are typical delays?
- Across all flights the average arrival delay was 20 min (early arrivals count as zero). Flights that were late arrived 82 min behind schedule on average, and 9.7% of flights were an hour or more late.
- How long is taxi time at LGA?
- Flights on this route spent 25 min taxiing from the gate to takeoff on average.
Related routes
Return trip: IAH to LGA — 73% on time
More flights from New York
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: LGA → IAH, nonstop flights by US airlines that report to the DOT. How we calculate this.