Flight Reliability
AA 421 · American Airlines
Dallas–Fort Worth → Syracuse (DFW–SYR)
36
Bring Snacks
WanderNerd Reliability Score
- 53%
- Arrive within 15 minutes
- 33 min
- Average arrival delay
- 3.3%
- Cancelled
- 13 min
- Median arrival delay
Based on 209 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
AA 421 arrived on time 68% of the time on Saturdays and just 45% on Sundays. That gap is worth planning around.
Well behind the American Airlines network.
AA 421 arrived on time 53% of the time, versus 77% across the American Airlines network.
Keep a backup plan handy.
AA 421 was cancelled 3.3% of the time. Typical for U.S. flights is around 1–2%.
Trending in the right direction.
AA 421 arrived on time 67% of the time over the last three months in the data, compared with 54% in the three months before that.
The breakdown
- Mon56%(27 flights)
- Tue45%(29 flights)
- Wed57%(30 flights)
- Thu53%(30 flights)
- Fri48%(29 flights)
- Sat68%(28 flights)
- Sun45%(29 flights)
- 12–3 PM—(2 flights)
- 3–6 PM—(1 flights)
- 6–9 PM53%(199 flights)
72%
May
Jun 13% → May 72% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 13% | 30 |
| July 2025 | 57% | 30 |
| August 2025 | 33% | 30 |
| September 2025 | 72% | 29 |
| October 2025 | 67% | 30 |
| April 2026 | 61% | 23 |
| May 2026 | 72% | 29 |
- Departures on time
- 52%
- Diverted
- 0%
- Flights flown
- 202
- Months covered
- 8
Same route, other flights
Keep nerding
Based on 209 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.