BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
JFK→IAH

New York, NY (JFK) to Houston, TX (IAH) flight delay odds

75.5% of 351 official scheduled JFK-to-IAH flights arrived on time; 13.1% arrived at least 30 minutes late and 2.8% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALVariable
75.5%arrived on time
13.1%30+ min late
2.8%cancelled
351scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.0%all scheduled flights
120+ minutes late2.8%all scheduled flights
Diverted0.6%did not reach as scheduled
Average arrival-0.3 mincompleted flights

Which departure time was most reliable for JFK to IAH?

Among qualifying JFK-to-IAH departure window results, Early morning had the highest on-time rate: 78.7% of 296 flights. Afternoon was lowest at 52.2% across 46 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning29678.7%10.5%3.0%
Afternoon4652.2%32.6%0.0%

Which weekday was most reliable for JFK to IAH?

Among qualifying JFK-to-IAH weekday results, Sunday had the highest on-time rate: 81.6% of 49 flights. Saturday was lowest at 70.0% across 50 flights.

DayFlightsOn time30+ minCancelled
Monday5178.4%11.8%5.9%
Tuesday5180.4%5.9%2.0%
Wednesday4973.5%10.2%2.0%
Thursday5070.0%20.0%0.0%
Friday5174.5%11.8%3.9%
Saturday5070.0%24.0%2.0%
Sunday4981.6%8.2%4.1%

Which airline was most reliable for JFK to IAH?

Among qualifying JFK-to-IAH airline results, Delta Air Lines had the highest on-time rate: 80.3% of 269 flights. JetBlue Airways was lowest at 59.8% across 82 flights.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines26980.3%9.7%3.7%
JetBlue Airways8259.8%24.4%0.0%

Which month was most reliable for JFK to IAH?

Among qualifying JFK-to-IAH month results, April 2026 had the highest on-time rate: 96.7% of 30 flights. May 2026 was lowest at 62.3% across 53 flights.

MonthFlightsOn time30+ minCancelled
September 20252387.0%4.3%0.0%
October 20253171.0%9.7%3.2%
November 20252996.6%3.4%0.0%
December 20253171.0%16.1%6.5%
January 20262969.0%13.8%10.3%
February 20262882.1%3.6%10.7%
March 20263183.9%6.5%3.2%
April 20263096.7%0.0%0.0%
May 20265362.3%26.4%0.0%
June 20266663.6%22.7%0.0%

What drove JFK to IAH delay minutes?

National airspace was the largest recorded JFK-to-IAH delay category, accounting for 41.1% of 4,500 BTS-attributed delay minutes during July 2025–June 2026.

Airline28.2%
Late aircraft21.3%
National airspace41.1%
Weather9.4%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.