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

Boston, MA (BOS) to Houston, TX (IAH) flight delay odds

80.4% of 2,027 official scheduled BOS-to-IAH flights arrived on time; 11.2% arrived at least 30 minutes late and 1.4% 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 SIGNALLower disruption
80.4%arrived on time
11.2%30+ min late
1.4%cancelled
2,027scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.9%all scheduled flights
120+ minutes late2.4%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival-1.8 mincompleted flights

Which departure time was most reliable for BOS to IAH?

Among qualifying BOS-to-IAH departure window results, Early morning had the highest on-time rate: 89.8% of 620 flights. Evening was lowest at 61.8% across 204 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning62089.8%4.7%1.6%
Late morning38783.2%7.5%2.6%
Afternoon81676.6%13.6%0.7%
Evening20461.8%28.9%1.5%

Which weekday was most reliable for BOS to IAH?

Among qualifying BOS-to-IAH weekday results, Wednesday had the highest on-time rate: 84.0% of 281 flights. Thursday was lowest at 76.4% across 296 flights.

DayFlightsOn time30+ minCancelled
Monday30280.5%10.3%3.6%
Tuesday28481.0%9.9%2.5%
Wednesday28184.0%7.5%2.1%
Thursday29676.4%16.9%1.0%
Friday30077.0%15.0%0.0%
Saturday26982.5%9.3%0.0%
Sunday29582.0%9.5%0.7%

Which airline was most reliable for BOS to IAH?

Among qualifying BOS-to-IAH airline results, United Airlines had the highest on-time rate: 82.3% of 1,567 flights. JetBlue Airways was lowest at 73.9% across 460 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines1,56782.3%10.5%1.5%
JetBlue Airways46073.9%13.9%1.3%

Which month was most reliable for BOS to IAH?

Among qualifying BOS-to-IAH month results, April 2026 had the highest on-time rate: 91.4% of 151 flights. May 2026 was lowest at 72.5% across 178 flights.

MonthFlightsOn time30+ minCancelled
July 202521675.9%16.2%2.3%
August 202519780.7%10.7%1.0%
September 202515875.9%15.2%0.6%
October 202519083.2%6.3%0.0%
November 202518983.1%10.6%1.1%
December 202517577.7%13.7%0.0%
January 202611680.2%7.8%6.0%
February 202612279.5%4.9%9.0%
March 202614888.5%8.1%0.7%
April 202615191.4%4.6%0.0%
May 202617872.5%16.9%0.0%
June 202618779.1%15.0%0.0%

What drove BOS to IAH delay minutes?

Late aircraft was the largest recorded BOS-to-IAH delay category, accounting for 49.2% of 24,160 BTS-attributed delay minutes during July 2025–June 2026.

Airline20.9%
Late aircraft49.2%
National airspace29.0%
Weather0.8%
Security0.1%
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.