Flight Reliability
F9 4903 · Frontier Airlines
Phoenix → Everett (PHX–PAE)
54
A Little Dicey
WanderNerd Reliability Score
- 65%
- Arrive within 15 minutes
- 34 min
- Average arrival delay
- 0%
- Cancelled
- 1 min
- Median arrival delay
Based on 50 historical flights. Data through May 2026.
What the data says
Morning flights do better here.
F9 4903 departing between 6–9 AM arrived on time 94% of the time, versus 46% between 3–6 PM.
Mondays have been rough.
F9 4903 arrived on time 77% of the time on Fridays and just 55% on Mondays. That gap is worth planning around.
Well behind the PHX–PAE route.
F9 4903 arrived on time 65% of the time, versus 87% across the PHX–PAE route.
Lagging the Frontier Airlines network.
F9 4903 arrived on time 65% of the time, versus 73% across the Frontier Airlines network.
The breakdown
- Mon55%(20 flights)
- Tue—(0 flights)
- Wed—(0 flights)
- Thu—(6 flights)
- Fri77%(17 flights)
- Sat—(0 flights)
- Sun—(6 flights)
- 6–9 AM94%(18 flights)
- 12–3 PM—(9 flights)
- 3–6 PM46%(22 flights)
- Departures on time
- 64%
- Diverted
- 2.0%
- Flights flown
- 49
- Months covered
- 7
Same route, other flights
Keep nerding
Based on 50 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.