Skip to content
WanderNerd
Check a flight

Flight Reliability

UA 4000 · United Airlines

LFT → Houston (LFT–IAH)82% of its flights flew this route. The rest (IAH–JAX, GRR–IAH) are included in these numbers.

93
Nerd Approved
WanderNerd Reliability Score
87%
Arrive within 15 minutes
7 min early
Average arrival delay
0.5%
Cancelled
14 min early
Median arrival delay

Based on 183 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

UA 4000 departing between 6–9 AM arrived on time 97% of the time, versus 66% between 12–3 PM.

Sunday scaries are real for this one.

UA 4000 arrived on time 96% of the time on Thursdays and just 79% on Sundays. That gap is worth planning around.

A bit ahead of the LFT–IAH route.

UA 4000 arrived on time 87% of the time, versus 82% across the LFT–IAH route.

Better than the United Airlines network average.

UA 4000 arrived on time 87% of the time, versus 79% across the United Airlines network.

The breakdown

On-time by weekday
  • Mon89%(26 flights)
  • Tue85%(27 flights)
  • Wed89%(27 flights)
  • Thu96%(28 flights)
  • Fri82%(27 flights)
  • Sat87%(23 flights)
  • Sun79%(24 flights)
On-time by departure window
  • 3–6 AM90%(119 flights)
  • 6–9 AM97%(31 flights)
  • 12–3 PM66%(32 flights)
On-time trend by month
84%
May

Oct 74% → May 84% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
October 202574%31
November 202596%24
January 202684%25
February 202693%28
April 202697%30
May 202684%31
Departures on time
96%
Diverted
0%
Flights flown
182
Months covered
8

Same route, other flights

Keep nerding

Based on 183 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.