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Route Reliability

Chicago → Jacksonville

MDW–JAX · 848 miles · Chicago Midway International Airport to Jacksonville International Airport

79
Usually Fine
WanderNerd Reliability Score
75%
Arrive within 15 minutes
10 min
Average arrival delay
0.8%
Cancelled
382
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 75% of the time across 382 flights. No comparison to make.

What the data says

Morning flights do better here.

MDW–JAX flights departing between 6–9 AM arrived on time 92% of the time, versus 63% between 6–9 PM.

Friday is doing you no favors.

MDW–JAX flights arrived on time 87% of the time on Tuesdays and just 65% on Fridays. That gap is worth planning around.

Recent months have been rougher.

MDW–JAX flights arrived on time 66% of the time over the last three months in the data, compared with 82% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon78%(51 flights)
  • Tue87%(52 flights)
  • Wed83%(52 flights)
  • Thu69%(51 flights)
  • Fri65%(51 flights)
  • Sat82%(60 flights)
  • Sun66%(61 flights)
On-time by departure window
  • 6–9 AM92%(12 flights)
  • 9 AM–12 PM84%(93 flights)
  • 12–3 PM79%(138 flights)
  • 3–6 PM70%(40 flights)
  • 6–9 PM63%(94 flights)
  • 9 PM–12 AM—(1 flights)
On-time trend by month
58%
May

Jun 68% → May 58% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202568%38
July 202571%38
August 202581%32
September 202590%30
October 202584%31
November 202575%28
December 202571%31
January 202689%27
February 202685%27
March 202659%34
April 202681%31
May 202658%31

Same trip, other airports

Keep nerding

Based on 382 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.