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Airline Reliability

Frontier Airlines

Carrier code F9 · 202,286 flights in the data

71
Usually Fine
WanderNerd Reliability Score
73%
Arrive within 15 minutes
14 min
Average arrival delay
1.9%
Cancelled
6 min early
Median arrival delay

Data through May 2026.

What the data says

Morning flights do better here.

Frontier Airlines flights departing between 6–9 AM arrived on time 83% of the time, versus 65% between 9 PM–12 AM.

Sunday scaries are real for this one.

Frontier Airlines flights arrived on time 79% of the time on Wednesdays. On Sundays: 69%.

The breakdown

On-time by weekday
  • Mon70%(34789 flights)
  • Tue75%(16862 flights)
  • Wed79%(16622 flights)
  • Thu76%(33335 flights)
  • Fri73%(35720 flights)
  • Sat74%(24589 flights)
  • Sun69%(36102 flights)
On-time by departure window
  • 12–3 AM74%(2003 flights)
  • 3–6 AM83%(5703 flights)
  • 6–9 AM83%(38106 flights)
  • 9 AM–12 PM78%(32992 flights)
  • 12–3 PM74%(30699 flights)
  • 3–6 PM68%(33749 flights)
  • 6–9 PM65%(31341 flights)
  • 9 PM–12 AM65%(23426 flights)
On-time trend by month
77%
May

Jun 62% → May 77% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202562%15522
July 202565%15893
August 202571%16396
September 202580%14820
October 202578%16838
November 202576%16691
December 202569%16231
January 202673%14817
February 202679%14826
March 202671%19428
April 202675%18268
May 202677%18289

Busiest Frontier Airlines routes

Biggest airports

Based on 202,286 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.