Flight Reliability
AA 327 · American Airlines
Chicago → New York (ORD–LGA)93% of its flights flew this route. The rest (LGA–ORD) are included in these numbers.
- 91%
- Arrive within 15 minutes
- 4 min early
- Average arrival delay
- 2.1%
- Cancelled
- 8 min early
- Median arrival delay
Based on 190 historical flights. Data through May 2026.
What the data says
Wednesday has been the better bet.
A small edge: 94% on time on Wednesdays against 87% on Thursdays.
Well ahead of the ORD–LGA route.
AA 327 arrived on time 91% of the time, versus 68% across the ORD–LGA route.
Better than the American Airlines network average.
AA 327 arrived on time 91% of the time, versus 77% across the American Airlines network.
Trending in the right direction.
AA 327 arrived on time 94% of the time over the last three months in the data, compared with 86% in the three months before that.
The breakdown
- Mon93%(29 flights)
- Tue93%(28 flights)
- Wed94%(31 flights)
- Thu87%(30 flights)
- Fri90%(30 flights)
- Sat89%(18 flights)
- Sun90%(19 flights)
- 3–6 AM90%(10 flights)
- 6–9 AM91%(162 flights)
- 9 AM–12 PM92%(13 flights)
Jun 94% → May 100% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 94% | 32 |
| July 2025 | 86% | 28 |
| August 2025 | 85% | 26 |
| September 2025 | 86% | 22 |
| October 2025 | 96% | 23 |
| April 2026 | 87% | 23 |
| May 2026 | 100% | 31 |
- Departures on time
- 92%
- Diverted
- 0.5%
- Flights flown
- 185
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 190 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.