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Flight Reliability

AA 234 · American Airlines

San Francisco → New York (SFO–JFK)

88
Pretty Reliable
WanderNerd Reliability Score
92%
Arrive within 15 minutes
0 min
Average arrival delay
2.5%
Cancelled
20 min early
Median arrival delay

Based on 365 historical flights. Data through May 2026.

What the data says

Saturday is the weak spot.

AA 234 arrived on time 98% of the time on Thursdays. On Saturdays: 84%.

Better than the SFO–JFK route average.

AA 234 arrived on time 92% of the time, versus 81% across the SFO–JFK route.

Well ahead of the American Airlines network.

AA 234 arrived on time 92% of the time, versus 77% across the American Airlines network.

Trending in the right direction.

AA 234 arrived on time 96% of the time over the last three months in the data, compared with 88% in the three months before that.

The breakdown

On-time by weekday
  • Mon94%(50 flights)
  • Tue96%(52 flights)
  • Wed90%(50 flights)
  • Thu98%(51 flights)
  • Fri88%(50 flights)
  • Sat84%(50 flights)
  • Sun92%(51 flights)
On-time by departure window
  • 6–9 AM92%(353 flights)
  • 12–3 PM—(1 flights)
On-time trend by month
97%
May

Jun 83% → May 97% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202583%30
July 202593%29
August 202590%31
September 202597%30
October 202593%30
November 202593%29
December 202597%30
January 202679%28
February 202689%26
March 202694%31
April 202697%29
May 202697%31
Departures on time
93%
Diverted
0.5%
Flights flown
354
Months covered
12

Same route, other flights

Keep nerding

Based on 365 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.