Flight Reliability
F9 2142 · Frontier Airlines
Phoenix → Denver (PHX–DEN)
75
Usually Fine
WanderNerd Reliability Score
- 72%
- Arrive within 15 minutes
- 17 min
- Average arrival delay
- 0.4%
- Cancelled
- 7 min early
- Median arrival delay
Based on 253 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
F9 2142 arrived on time 89% of the time on Saturdays and just 52% on Fridays. That gap is worth planning around.
A bit behind the PHX–DEN route.
F9 2142 arrived on time 72% of the time, versus 78% across the PHX–DEN route.
Slipping a little lately.
F9 2142 arrived on time 67% of the time over the last three months in the data, compared with 73% in the three months before that.
The breakdown
- Mon73%(45 flights)
- Tue87%(23 flights)
- Wed83%(24 flights)
- Thu73%(44 flights)
- Fri52%(42 flights)
- Sat89%(28 flights)
- Sun63%(46 flights)
- 12–3 PM—(4 flights)
- 3–6 PM72%(71 flights)
- 6–9 PM72%(169 flights)
- 9 PM–12 AM—(8 flights)
30%
May
Jun 61% → May 30% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 61% | 23 |
| July 2025 | 65% | 20 |
| August 2025 | 68% | 19 |
| September 2025 | 63% | 16 |
| October 2025 | 84% | 25 |
| November 2025 | 79% | 24 |
| December 2025 | 72% | 29 |
| January 2026 | 62% | 21 |
| February 2026 | 85% | 26 |
| March 2026 | 78% | 27 |
| April 2026 | 92% | 12 |
| May 2026 | 30% | 10 |
- Departures on time
- 69%
- Diverted
- 0%
- Flights flown
- 252
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 253 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.