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Flight Reliability

F9 4091 · Frontier Airlines

Baltimore → Tampa (BWI–TPA)

76
Usually Fine
WanderNerd Reliability Score
77%
Arrive within 15 minutes
10 min
Average arrival delay
2.1%
Cancelled
10 min early
Median arrival delay

Based on 193 historical flights. Data through May 2026.

What the data says

Morning flights do better here.

F9 4091 departing between 9 AM–12 PM arrived on time 81% of the time, versus 64% between 6–9 PM.

Sunday scaries are real for this one.

F9 4091 arrived on time 84% of the time on Fridays and just 67% on Sundays. That gap is worth planning around.

A bit ahead of the Frontier Airlines network.

F9 4091 arrived on time 77% of the time, versus 73% across the Frontier Airlines network.

Recent months have been rougher.

F9 4091 arrived on time 69% of the time over the last three months in the data, compared with 82% in the three months before that.

The breakdown

On-time by weekday
  • Mon67%(33 flights)
  • Tue78%(18 flights)
  • Wed83%(18 flights)
  • Thu82%(33 flights)
  • Fri84%(37 flights)
  • Sat80%(20 flights)
  • Sun67%(30 flights)
On-time by departure window
  • 6–9 AM81%(99 flights)
  • 9 AM–12 PM81%(32 flights)
  • 12–3 PM69%(13 flights)
  • 3–6 PM—(3 flights)
  • 6–9 PM64%(42 flights)
On-time trend by month
96%
May

Jun 75% → May 96% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%28
July 202580%30
August 202581%26
October 202585%13
January 202680%10
March 202654%24
April 202657%14
May 202696%22
Departures on time
77%
Diverted
0%
Flights flown
189
Months covered
11

Same route, other flights

Keep nerding

Based on 193 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.