Flight Reliability
AA 661 · American Airlines
Philadelphia → Las Vegas (PHL–LAS)80% of its flights flew this route. The rest (DFW–XNA, PIT–DFW) are included in these numbers.
81
Pretty Reliable
WanderNerd Reliability Score
- 73%
- Arrive within 15 minutes
- 4 min
- Average arrival delay
- 0%
- Cancelled
- 4 min early
- Median arrival delay
Based on 55 historical flights. Data through May 2026.
What the data says
A bit behind the PHL–LAS route.
AA 661 arrived on time 73% of the time, versus 77% across the PHL–LAS route.
A bit behind the American Airlines network.
AA 661 arrived on time 73% of the time, versus 77% across the American Airlines network.
The breakdown
- Mon—(9 flights)
- Tue—(9 flights)
- Wed—(7 flights)
- Thu—(6 flights)
- Fri—(6 flights)
- Sat80%(10 flights)
- Sun—(8 flights)
- 12–3 AM—(2 flights)
- 3–6 AM—(3 flights)
- 6–9 AM—(3 flights)
- 9 AM–12 PM—(3 flights)
- 6–9 PM71%(44 flights)
- Departures on time
- 76%
- Diverted
- 0%
- Flights flown
- 55
- Months covered
- 6
Same route, other flights
Keep nerding
Based on 55 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.