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

Fort Lauderdale, FL (FLL) to Houston, TX (IAH) flight delay odds

Historically, 81.0% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,755 flights.

HISTORICAL ROUTE SIGNALLower disruption
81.0%arrived on time
13.0%30+ min late
1.1%cancelled
2,755scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.1%all scheduled flights
120+ minutes late2.8%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+1.2 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 morning72993.4%3.3%0.8%
Late morning41292.2%4.4%0.7%
Afternoon74374.4%19.0%0.4%
Evening62672.8%18.5%1.8%
Night24565.7%23.7%3.3%

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
Monday41079.0%12.4%2.0%
Tuesday35788.8%8.7%0.3%
Wednesday36886.1%10.3%0.8%
Thursday40885.5%9.3%1.0%
Friday41579.5%14.7%1.0%
Saturday38679.0%15.0%1.3%
Sunday41170.3%19.5%1.5%

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 Airlines1,79287.4%8.2%0.8%
Spirit Airlines85971.1%20.0%1.7%
Frontier Airlines10451.0%36.5%1.9%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202519580.0%13.8%1.0%
August 202519477.3%17.5%0.5%
September 202519585.1%11.3%0.0%
October 202526789.9%6.4%0.0%
November 202526484.8%9.1%2.3%
December 202527981.7%11.5%0.4%
January 202627184.1%9.2%1.5%
February 202624585.7%9.8%0.4%
March 202629469.4%21.8%3.7%
April 202626275.6%16.8%1.1%
May 202616078.1%14.4%1.2%
June 202612979.1%16.3%0.0%

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.

Airline36.6%
Late aircraft25.5%
National airspace34.6%
Weather3.2%
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.