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Route Reliability

Los Angeles → Chicago

LAX–ORD · 1,744 miles · Los Angeles International Airport to Chicago O'Hare International Airport

77
Usually Fine
WanderNerd Reliability Score
78%
Arrive within 15 minutes
10 min
Average arrival delay
1.7%
Cancelled
6,981
Flights in the data

Data through May 2026.

Who flies it best

Ranked by on-time arrivals. Historical results, not predictions.

  1. 1.Spirit Airlines82%300 flights
  2. 2.United Airlines82%3,394 flights
  3. 3.American Airlines74%3,039 flights
  4. 4.Frontier Airlines61%248 flights

What the data says

Morning-you made the right choice.

LAX–ORD flights departing between 3–6 AM arrived on time 96% of the time, versus 68% between 12–3 PM.

Tuesday has been the better bet.

A small edge: 81% on time on Tuesdays against 75% on Saturdays.

Spirit Airlines has a clear lead on this route.

Spirit Airlines arrived on time 82% of the time on this route; Frontier Airlines managed 61%.

Best historical flights

Ranked by on-time arrivals, minimum 100 flights. Past performance, not a promise.

Top flights by on-time rate

More flights on this route

The breakdown

On-time by weekday
  • Mon76%(1020 flights)
  • Tue81%(936 flights)
  • Wed79%(920 flights)
  • Thu80%(1008 flights)
  • Fri79%(1016 flights)
  • Sat75%(898 flights)
  • Sun75%(1022 flights)
On-time by departure window
  • 12–3 AM81%(547 flights)
  • 3–6 AM96%(110 flights)
  • 6–9 AM90%(1540 flights)
  • 9 AM–12 PM72%(1243 flights)
  • 12–3 PM68%(1055 flights)
  • 3–6 PM73%(999 flights)
  • 6–9 PM76%(304 flights)
  • 9 PM–12 AM79%(1022 flights)
On-time trend by month
78%
May

Jun 80% → May 78% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202580%664
July 202578%659
August 202575%651
September 202582%611
October 202581%562
November 202573%561
December 202574%558
January 202679%453
February 202684%453
March 202671%523
April 202679%532
May 202678%593

Same trip, other airports

Keep nerding

Based on 6,981 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.