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Route Reliability

San Juan → Houston

SJU–IAH · 2,007 miles · Luis Muñoz Marín International Airport to George Bush Intercontinental Airport

92
Nerd Approved
WanderNerd Reliability Score
88%
Arrive within 15 minutes
9 min early
Average arrival delay
0.7%
Cancelled
962
Flights in the data

Data through May 2026.

Airlines on this route

  • United Airlines90% on time · 872 flights
  • Spirit Airlines75% on time · 90 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

Morning-you made the right choice.

SJU–IAH flights departing between 12–3 AM arrived on time 97% of the time, versus 77% between 3–6 PM.

Sunday scaries are real for this one.

SJU–IAH flights arrived on time 92% of the time on Tuesdays. On Sundays: 84%.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon89%(130 flights)
  • Tue92%(133 flights)
  • Wed91%(117 flights)
  • Thu86%(144 flights)
  • Fri90%(122 flights)
  • Sat89%(143 flights)
  • Sun84%(162 flights)
On-time by departure window
  • 12–3 AM97%(91 flights)
  • 3–6 AM—(1 flights)
  • 6–9 AM94%(377 flights)
  • 9 AM–12 PM88%(85 flights)
  • 12–3 PM85%(238 flights)
  • 3–6 PM77%(150 flights)
  • 6–9 PM—(9 flights)
On-time trend by month
93%
May

Jun 93% → May 93% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202593%101
July 202593%110
August 202582%93
September 202596%68
October 202579%70
November 202579%68
December 202589%91
January 202688%77
February 202689%65
March 202688%76
April 202688%60
May 202693%72

Same trip, other airports

Keep nerding

Based on 962 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.