IAH to LGA flight delays & on-time performance
Nonstop flights from George Bush Intercontinental Airport to LaGuardia Airport · 1,416 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at IAH or LGA 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 New York (LGA) arrived on time 73% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2.9% were cancelled, and 12% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (77% on time); Spirit Airlines was the least (61%).
- Departures scheduled around 8am did best (88% on time); around 4pm did worst (64%).
- Saturday was the most reliable day to fly (78% on time) and Sunday the least (66%).
- The largest source of delay minutes was air traffic control & airport congestion (47%).
Which airline is most on time from IAH to LGA?
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% | 3.1% | 7 min | 3.2% | 32 |
| Delta Air Lines | 77% | 4.5% | 22 min | 9.3% | 1,345 |
| United Airlines | 71% | 1.6% | 23 min | 12.4% | 2,381 |
| Spirit Airlines | 61% | 6.4% | 31 min | 15.7% | 266 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 6am83%146 flights
- 7am86%519 flights
- 8am88%289 flights
- 9am80%176 flights
- 10am79%426 flights
- 12pm66%352 flights
- 2pm67%519 flights
- 3pm65%107 flights
- 4pm64%387 flights
- 5pm65%290 flights
- 6pm65%700 flights
- 7pm59%90 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday69%3.9% cancelled
- Tuesday75%2.8% cancelled
- Wednesday77%2.3% cancelled
- Thursday70%1.7% cancelled
- Friday75%2.4% cancelled
- Saturday78%3.0% cancelled
- Sunday66%4.2% 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 congestion47%
- Airline (crew, maintenance, cleaning, fueling)27%
- Late-arriving aircraft24%
- Extreme weather2%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather54%
- Airline (crew, maintenance, cleaning, fueling)32%
- Air traffic control & airport congestion14%
- Security0%
IAH to LGA: common questions
- How often are IAH to LGA flights on time?
- 73% 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 New York cancelled?
- 2.9% of scheduled flights were cancelled (116 of 4,024).
- How long are typical delays?
- Across all flights the average arrival delay was 23 min (early arrivals count as zero). Flights that were late arrived 81 min behind schedule on average, and 11.5% of flights were an hour or more late.
- How long is taxi time at IAH?
- Flights on this route spent 20 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LGA to IAH — 77% 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 → LGA, nonstop flights by US airlines that report to the DOT. How we calculate this.