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Flight Reliability

AA 3626 · American Airlines

Chicago → SGF (ORD–SGF)95% of its flights flew this route. The rest (SGF–ORD, DFW–SAT) are included in these numbers.

72
Usually Fine
WanderNerd Reliability Score
71%
Arrive within 15 minutes
13 min
Average arrival delay
1.2%
Cancelled
6 min early
Median arrival delay

Based on 331 historical flights. Data through May 2026.

What the data says

The late departure is the smart one here.

AA 3626 departing between 6–9 PM arrived on time 72% of the time, versus 57% between 3–6 PM.

Thursdays have been rough.

AA 3626 arrived on time 87% of the time on Tuesdays and just 60% on Thursdays. That gap is worth planning around.

A bit behind the American Airlines network.

AA 3626 arrived on time 71% of the time, versus 77% across the American Airlines network.

Trending in the right direction.

AA 3626 arrived on time 74% of the time over the last three months in the data, compared with 66% in the three months before that.

The breakdown

On-time by weekday
  • Mon71%(52 flights)
  • Tue87%(39 flights)
  • Wed75%(51 flights)
  • Thu60%(48 flights)
  • Fri68%(53 flights)
  • Sat75%(28 flights)
  • Sun67%(55 flights)
On-time by departure window
  • 12–3 PM—(2 flights)
  • 3–6 PM57%(14 flights)
  • 6–9 PM72%(310 flights)
On-time trend by month
69%
May

Jun 62% → May 69% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%26
July 202564%25
August 202580%30
September 202582%27
October 202571%31
November 202578%27
December 202555%29
January 202664%22
February 202680%20
March 202671%21
April 202681%26
May 202669%42
Departures on time
70%
Diverted
0.3%
Flights flown
326
Months covered
12

Same route, other flights

Keep nerding

Based on 331 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.