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Route Reliability

Houston → Baltimore

HOU–BWI · 1,246 miles · William P. Hobby Airport to Baltimore/Washington International Thurgood Marshall Airport

76
Usually Fine
WanderNerd Reliability Score
76%
Arrive within 15 minutes
9 min
Average arrival delay
1.8%
Cancelled
1,462
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 76% of the time across 1,462 flights. No comparison to make.

What the data says

Morning-you made the right choice.

HOU–BWI flights departing between 6–9 AM arrived on time 93% of the time, versus 56% between 9 PM–12 AM.

Skip Monday if you can.

HOU–BWI flights arrived on time 83% of the time on Tuesdays. On Mondays: 73%.

Recent months have been rougher.

HOU–BWI flights arrived on time 71% of the time over the last three months in the data, compared with 85% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon73%(203 flights)
  • Tue83%(201 flights)
  • Wed79%(198 flights)
  • Thu75%(199 flights)
  • Fri73%(202 flights)
  • Sat75%(204 flights)
  • Sun73%(226 flights)
On-time by departure window
  • 3–6 AM92%(249 flights)
  • 6–9 AM93%(198 flights)
  • 9 AM–12 PM84%(256 flights)
  • 12–3 PM73%(60 flights)
  • 3–6 PM67%(346 flights)
  • 6–9 PM57%(292 flights)
  • 9 PM–12 AM56%(32 flights)
On-time trend by month
78%
May

Jun 64% → May 78% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202564%119
July 202571%120
August 202578%127
September 202584%124
October 202572%130
November 202580%128
December 202578%129
January 202693%97
February 202683%95
March 202658%120
April 202676%120
May 202678%124

Same trip, other airports

Keep nerding

Based on 1,462 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.