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Flight Reliability

DL 2099 · Delta Air Lines

New York → Houston (LGA–IAH)84% of its flights flew this route. The rest (IAH–LGA) are included in these numbers.

62
A Little Dicey
WanderNerd Reliability Score
75%
Arrive within 15 minutes
7 min
Average arrival delay
4.6%
Cancelled
9 min early
Median arrival delay

Based on 411 historical flights. Data through May 2026.

What the data says

Morning-you made the right choice.

DL 2099 departing between 6–9 AM arrived on time 100% of the time, versus 64% between 12–3 PM.

Thursdays have been rough.

DL 2099 arrived on time 85% of the time on Saturdays and just 67% on Thursdays. That gap is worth planning around.

A bit behind the Delta Air Lines network.

DL 2099 arrived on time 75% of the time, versus 81% across the Delta Air Lines network.

Keep a backup plan handy.

DL 2099 was cancelled 4.6% of the time. Typical for U.S. flights is around 1–2%.

The breakdown

On-time by weekday
  • Mon75%(57 flights)
  • Tue74%(58 flights)
  • Wed80%(51 flights)
  • Thu67%(51 flights)
  • Fri74%(58 flights)
  • Sat85%(52 flights)
  • Sun68%(63 flights)
On-time by departure window
  • 6–9 AM100%(16 flights)
  • 9 AM–12 PM75%(308 flights)
  • 12–3 PM64%(56 flights)
  • 3–6 PM70%(10 flights)
On-time trend by month
68%
May

Jun 79% → May 68% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202579%29
July 202587%31
August 202584%31
September 202577%30
October 202555%29
November 202572%29
December 202561%31
January 202687%31
February 202694%16
March 202667%39
April 202675%57
May 202668%37
Departures on time
79%
Diverted
0.5%
Flights flown
390
Months covered
12

Same route, other flights

Keep nerding

Based on 411 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.