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Flight Reliability

F9 1887 · Frontier Airlines

Chicago → Dallas–Fort Worth (MDW–DFW)

74
Usually Fine
WanderNerd Reliability Score
75%
Arrive within 15 minutes
8 min
Average arrival delay
1.9%
Cancelled
9 min early
Median arrival delay

Based on 212 historical flights. Data through May 2026.

What the data says

Mornings have a slight edge.

Departures between 6–9 AM arrived on time 78% of the time, against 72% between 3–6 AM.

Saturday is the weak spot.

F9 1887 arrived on time 82% of the time on Thursdays. On Saturdays: 69%.

A bit ahead of the MDW–DFW route.

F9 1887 arrived on time 75% of the time, versus 72% across the MDW–DFW route.

Recent months have been rougher.

F9 1887 arrived on time 68% of the time over the last three months in the data, compared with 76% in the three months before that.

The breakdown

On-time by weekday
  • Mon78%(41 flights)
  • Tue—(8 flights)
  • Wed80%(10 flights)
  • Thu82%(39 flights)
  • Fri81%(42 flights)
  • Sat69%(29 flights)
  • Sun71%(38 flights)
On-time by departure window
  • 3–6 AM72%(18 flights)
  • 6–9 AM78%(90 flights)
  • 9 AM–12 PM78%(36 flights)
  • 3–6 PM75%(57 flights)
  • 6–9 PM—(3 flights)
  • 9 PM–12 AM—(3 flights)
On-time trend by month
76%
May

Jun 68% → May 76% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%22
July 202580%20
August 2025100%14
September 202585%20
October 202575%12
November 202562%13
December 202581%16
January 202667%12
February 202680%15
March 202663%16
April 202667%18
May 202676%29
Departures on time
83%
Diverted
0.5%
Flights flown
207
Months covered
12

Same route, other flights

Keep nerding

Based on 212 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.