Flight Reliability
F9 2141 · Frontier Airlines
Denver → Phoenix (DEN–PHX)
83
Pretty Reliable
WanderNerd Reliability Score
- 81%
- Arrive within 15 minutes
- 2 min early
- Average arrival delay
- 1.4%
- Cancelled
- 13 min early
- Median arrival delay
Based on 74 historical flights. Data through May 2026.
What the data says
Morning flights do better here.
F9 2141 departing between 9 AM–12 PM arrived on time 84% of the time, versus 67% between 12–3 PM.
Thursdays have been rough.
F9 2141 arrived on time 92% of the time on Mondays and just 67% on Thursdays. That gap is worth planning around.
A bit ahead of the DEN–PHX route.
F9 2141 arrived on time 81% of the time, versus 76% across the DEN–PHX route.
Better than the Frontier Airlines network average.
F9 2141 arrived on time 81% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon92%(12 flights)
- Tue—(9 flights)
- Wed90%(10 flights)
- Thu67%(12 flights)
- Fri69%(13 flights)
- Sat—(5 flights)
- Sun83%(12 flights)
- 9 AM–12 PM84%(51 flights)
- 12–3 PM67%(15 flights)
- 3–6 PM—(6 flights)
- 9 PM–12 AM—(1 flights)
89%
May
Mar 67% → May 89% on time
| Month | On-time percentage | Flights |
|---|---|---|
| March 2026 | 67% | 15 |
| April 2026 | 80% | 25 |
| May 2026 | 89% | 26 |
- Departures on time
- 82%
- Diverted
- 0%
- Flights flown
- 73
- Months covered
- 4
Same route, other flights
Keep nerding
Based on 74 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.