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

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

Historically, 70.1% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 4,053 flights.

HISTORICAL ROUTE SIGNALVariable
70.1%arrived on time
19.1%30+ min late
2.7%cancelled
4,053scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late11.5%all scheduled flights
120+ minutes late4.9%all scheduled flights
Diverted0.7%did not reach as scheduled
Average arrival+14.7 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Early morning95485.3%7.4%2.3%
Late morning60976.4%13.5%2.5%
Afternoon1,37263.8%24.6%2.4%
Evening1,11861.4%25.6%3.7%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday62467.0%19.6%3.7%
Tuesday63373.6%18.3%1.7%
Wednesday61072.1%16.9%2.3%
Thursday60668.5%20.5%1.8%
Friday61072.6%17.2%2.5%
Saturday37277.7%14.8%3.0%
Sunday59861.9%25.3%4.3%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines2,38269.7%20.5%1.6%
Delta Air Lines1,34273.5%15.0%3.9%
Spirit Airlines29756.9%28.3%6.1%
SkyWest Airlines3281.2%9.4%3.1%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 202538060.8%24.5%2.9%
August 202537671.8%18.1%0.8%
September 202536985.4%8.4%0.3%
October 202537666.8%22.3%1.9%
November 202535363.5%26.3%1.1%
December 202534862.4%22.4%4.3%
January 202628783.3%8.4%5.2%
February 202624174.7%14.5%6.2%
March 202627248.5%31.2%9.9%
April 202636477.7%15.4%1.4%
May 202634776.1%16.4%1.4%
June 202634069.1%21.2%0.9%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline25.9%
Late aircraft23.1%
National airspace47.7%
Weather3.3%
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.