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Route Reliability

Chicago → Los Angeles

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

75
Usually Fine
WanderNerd Reliability Score
74%
Arrive within 15 minutes
12 min
Average arrival delay
1.5%
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.United Airlines78%3,396 flights
  2. 2.Spirit Airlines75%295 flights
  3. 3.American Airlines71%3,040 flights
  4. 4.Frontier Airlines67%250 flights

What the data says

Morning-you made the right choice.

ORD–LAX flights departing between 6–9 AM arrived on time 85% of the time, versus 62% between 6–9 PM.

Wednesday has been the better bet.

A small edge: 78% on time on Wednesdays against 72% on Sundays.

United Airlines runs this route best.

United Airlines arrived on time 78% of the time on this route; Frontier Airlines managed 67%.

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
  • Mon73%(1033 flights)
  • Tue76%(928 flights)
  • Wed78%(929 flights)
  • Thu77%(1021 flights)
  • Fri74%(1018 flights)
  • Sat72%(902 flights)
  • Sun72%(1036 flights)
On-time by departure window
  • 12–3 AM—(2 flights)
  • 3–6 AM—(1 flights)
  • 6–9 AM85%(1681 flights)
  • 9 AM–12 PM79%(1178 flights)
  • 12–3 PM81%(914 flights)
  • 3–6 PM70%(1008 flights)
  • 6–9 PM62%(1568 flights)
  • 9 PM–12 AM65%(515 flights)
On-time trend by month
80%
May

Jun 75% → May 80% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202575%671
July 202570%661
August 202574%653
September 202582%614
October 202574%565
November 202578%566
December 202569%558
January 202671%457
February 202680%451
March 202675%532
April 202666%542
May 202680%597

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.