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

Baltimore, MD (BWI) to Houston, TX (IAH) flight delay odds

Historically, 78.2% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,311 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
78.2%arrived on time
13.8%30+ min late
1.8%cancelled
1,311scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.7%all scheduled flights
120+ minutes late4.0%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+4.3 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 morning41890.7%5.3%1.2%
Late morning11381.4%14.2%0.0%
Afternoon44177.3%13.8%1.1%
Evening32264.0%24.2%3.1%

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
Monday19774.6%15.7%2.5%
Tuesday17281.4%12.2%0.6%
Wednesday17181.3%12.3%0.0%
Thursday21285.8%10.4%0.0%
Friday20673.3%14.1%2.9%
Saturday16078.1%16.9%1.9%
Sunday19373.1%15.5%4.7%

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 Airlines81682.0%11.0%1.1%
Spirit Airlines37674.5%16.8%2.7%
Frontier Airlines11863.6%23.7%4.2%
SkyWest Airlines1100.0%0.0%0.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202510675.5%17.9%1.9%
August 202510085.0%8.0%0.0%
September 202510688.7%8.5%0.0%
October 202510886.1%8.3%0.0%
November 202512379.7%15.4%1.6%
December 202510475.0%19.2%0.0%
January 202611980.7%8.4%7.6%
February 202610283.3%11.8%2.9%
March 202611575.7%13.9%4.3%
April 202611971.4%15.1%1.7%
May 202610667.0%21.7%0.0%
June 202610370.9%17.5%1.0%

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.

Airline33.1%
Late aircraft27.1%
National airspace32.5%
Weather7.3%
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.