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Flight Reliability

F9 2905 · Frontier Airlines

San Juan → Washington (SJU–IAD)

65
Usually Fine
WanderNerd Reliability Score
68%
Arrive within 15 minutes
23 min
Average arrival delay
1.0%
Cancelled
4 min early
Median arrival delay

Based on 100 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

F9 2905 departing between 6–9 AM arrived on time 85% of the time, versus 51% between 3–6 PM.

Mondays have been rough.

F9 2905 arrived on time 73% of the time on Thursdays and just 50% on Mondays. That gap is worth planning around.

Well behind the SJU–IAD route.

F9 2905 arrived on time 68% of the time, versus 86% across the SJU–IAD route.

A bit behind the Frontier Airlines network.

F9 2905 arrived on time 68% of the time, versus 73% across the Frontier Airlines network.

The breakdown

On-time by weekday
  • Mon50%(10 flights)
  • Tue58%(12 flights)
  • Wed—(0 flights)
  • Thu73%(22 flights)
  • Fri70%(10 flights)
  • Sat71%(17 flights)
  • Sun71%(28 flights)
On-time by departure window
  • 6–9 AM85%(48 flights)
  • 12–3 PM—(2 flights)
  • 3–6 PM51%(49 flights)
On-time trend by month
73%
Jan

Jun 82% → Jan 73% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202582%11
July 202579%14
August 202585%13
November 202562%13
December 202553%15
January 202673%11
Departures on time
76%
Diverted
0%
Flights flown
99
Months covered
10

Same route, other flights

Keep nerding

Based on 100 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.