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Flight Reliability

AA 1843 · American Airlines

Charlotte → Boston (CLT–BOS)100% of its flights flew this route. The rest (CLT–PDX) are included in these numbers.

56
A Little Dicey
WanderNerd Reliability Score
66%
Arrive within 15 minutes
16 min
Average arrival delay
3.4%
Cancelled
2 min
Median arrival delay

Based on 353 historical flights. Data through May 2026.

What the data says

The 3–6 PM departure wins.

AA 1843 departing between 3–6 PM arrived on time 74% of the time, versus 65% between 6–9 PM.

Sunday scaries are real for this one.

AA 1843 arrived on time 78% of the time on Wednesdays and just 50% on Sundays. That gap is worth planning around.

Lagging the CLT–BOS route.

AA 1843 arrived on time 66% of the time, versus 76% across the CLT–BOS route.

Lagging the American Airlines network.

AA 1843 arrived on time 66% of the time, versus 77% across the American Airlines network.

The breakdown

On-time by weekday
  • Mon76%(49 flights)
  • Tue67%(45 flights)
  • Wed78%(49 flights)
  • Thu63%(51 flights)
  • Fri64%(50 flights)
  • Sat67%(46 flights)
  • Sun50%(50 flights)
On-time by departure window
  • 9 AM–12 PM—(1 flights)
  • 3–6 PM74%(35 flights)
  • 6–9 PM65%(268 flights)
  • 9 PM–12 AM67%(36 flights)
On-time trend by month
74%
May

Jun 36% → May 74% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202536%28
July 202521%28
August 202548%29
September 202573%30
October 202577%30
November 202569%29
December 202575%28
January 202681%26
February 202681%26
March 202682%27
April 202679%28
May 202674%31
Departures on time
63%
Diverted
0.3%
Flights flown
340
Months covered
12

Same route, other flights

Keep nerding

Based on 353 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.